drying tumbler troubleshooting manual
TRANSCRIPT
www.alliancelaundry.com
Trou
blesh
ooting
Part No. 70291301R3December 2016
Tumble Dryers30 Pound Stack
Through Serial No. 0602004143
Refer to Page 5 for Model Numbers
START
25C
HIGHTEMP
MEDTEMPLOWTEMP
NOHEAT
1
2
3
SELECTTEMP
INSERTCOIN
PUSHSTART
1
2
3
SELECTTEMP
INSERTCOIN
PUSHSTART
START
25C
HIGHTEMP
MEDTEMPLOWTEMP
NOHEAT
T464PZ3A
© Copyright 2016, Alliance Laundry Systems LLC
All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without the expressed written consent of the publisher.
70291301 1© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Table of Contents
Section 1 – Safety Information ...............................................................5Locating An Authorized Service Person ...............................................6Safety Warnings and Decals..................................................................7Safety Precautions for Servicing Tumble Dryers ..................................7
Section 2 – Introduction ..........................................................................8Model Identification ..............................................................................8Serial Plate Location..............................................................................9Customer Service...................................................................................9Wiring Diagram.....................................................................................9How A Tumble Dryer Works ..............................................................10
Section 3 – Troubleshooting..................................................................111. Tumble Dryer Does Not Start .....................................................122. Motor Does Not Start..................................................................133. Motor Overload Protector Cycles Repeatedly ............................144. Motor Runs But Cylinder Does Not Turn...................................155. Motor Does Not Stop ..................................................................166. Burner Does Not Ignite ...............................................................177. Burner Ignites and Goes Out Repeatedly....................................208. Burner Does Not Shut Off ..........................................................219. Clothes Do Not Dry ....................................................................22
10. Tumble Dryer Overheating .........................................................2411. Burner Not Burning Properly......................................................2512. Loading Door Opens During Operation......................................2613. Cylinder Continues to Spin with Door Open ..............................2714. Coin Does Not Fall into Coin Vault or Coin Drop Sensor
Does Not Register That Coin Has Been Entered ........................28
Section 4 – Adjustments ........................................................................3115. Troubleshooting and Cleaning Coin Drop ..................................3116. Troubleshooting Coin Drop ........................................................3117. Cleaning Coin Drop ....................................................................31
Section 5 – Electronic Control Troubleshooting.................................3518. Theory of Operation of Instant Electronic Ignition ....................3519. Cannot Perform Infrared (IR) Communication...........................3620. Coins Ignored When Entered......................................................3721. Control Display – Door Open Light “On” ..................................3822. Control Display – “door” Error on 25, 30, Stacked 30 and
35 Pound Tumble Dryers with 24 Volt EDC Controls ...............3923. Control Display – No Visible Display – OPL Microprocessor
Models.........................................................................................4024. Control Display – No Visible Display – Power On....................4125. Will Not Start – Electric – Manual Timer...................................4226. Will Not Start – Electric – Rotary Coin Drop.............................4327. Will Not Start – Gas – Manual Timer.........................................4528. Will Not Start – Gas – Rotary Coin Drop...................................46
2 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
29. Will Not Start – Steam – Manual Timer .....................................4830. Will Not Start – Steam – Rotary Coin Drop ...............................4931. Will Not Start/Continue Running – EDC Control ......................5132. Will Not Start/Continue Running – OPL Microprocessor
Control ........................................................................................5433. Will Not Run – Electric – Manual Timer ...................................5734. Will Not Run – Electric – Rotary Coin Drop..............................6035. Will Not Run – Gas – Manual Timer..........................................6336. Will Not Run – Gas – Rotary Coin Drop....................................6537. Will Not Run – Steam – Manual Timer......................................6738. Will Not Run – Steam – Rotary Coin Drop ................................6939. Will Not Heat – Electric – Manual Timer...................................7140. Will Not Heat – Electric..............................................................7341. Will Not Heat – Electric – Rotary Coin Drop (With and
Without Time Delay Board) .......................................................7542. Will Not Heat – Electric/Gas – OPL Microprocessor.................7743. Will Not Heat – Gas – EDC Models...........................................8044. Will Not Heat – Gas – Manual Timer.........................................8245. Will Not Heat – Gas – Rotary Coin Drop...................................8446. Will Not Heat – Steam – EDC Models .......................................8647. Will Not Heat – Steam – Manual Timer .....................................8848. Will Not Heat – Steam – OPL Microprocessor ..........................9049. Will Not Heat – Steam – Rotary Coin Drop ...............................93
Section 6 – Micro Display Control Troubleshooting ..........................9550. Coins Ignored When Entered......................................................9551. Control Has No Display..............................................................9652. Door Open Indicator ...................................................................9853. Motor Will Not Start/Run .........................................................10054. Unit Will Not Heat – Gas..........................................................10455. Unit Will Not Heat – Steam......................................................10756. Unit Will Not Heat – Electric ...................................................11057. Error Codes ...............................................................................113Gas ModelsSchematic ........................................................................................114Connection Diagram .......................................................................115
Steam ModelsSchematic ........................................................................................116Connection Diagram .......................................................................117
Electric ModelsSchematic ........................................................................................118Connection Diagram .......................................................................119
Section 7 – NetMaster Troubleshooting ............................................12058. No IR Communication ..............................................................12059. Coins Ignored When Entered....................................................12160. Control Has No Display............................................................12261. Door Open Indicator .................................................................12562. Motor Will Not Start/Run .........................................................128
70291301 3© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
63. Unit Will Not Heat – Gas..........................................................13464. Unit Will Not Heat – Steam......................................................13865. Unit Will Not Heat – Electric ...................................................142
4 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Notes
70291301 5© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 1Safety Information
Throughout this manual and on machine decals, you will find precautionary statements (“CAUTION”, “WARNING”, and “DANGER”) followed by specific instructions. These precautions are intended for the personal safety of the operator, user, servicer, and those maintaining the machine.
Additional precautionary statements (“IMPORTANT” and “NOTE”) are followed by specific instructions.
IMPORTANT: The word “IMPORTANT” is used to inform the reader of specific procedures where minor machine damage will occur if the procedure is not followed.
NOTE: The word “NOTE” is used to communicate installation, operation, maintenance or servicing information that is important but not hazard related.
In the interest of safety, some general precautions relating to the operation of this machine follow.
Danger indicates an imminently hazardous situation that, if not avoided, will cause severe personal injury or death.
DANGER
Warning indicates a hazardous situation that, if not avoided, could cause severe personal injury or death.
WARNING
Caution indicates a hazardous situation that, if not avoided, may cause minor or moderate personal injury or property damage.
CAUTION
• Failure to install, maintain and/or operate this product according to the manufacturer’s instructions may result in conditions which can produce serious injury, death and/or property damage.
• Do not repair or replace any part of the product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing.
• Whenever ground wires are removed during servicing, these ground wires must be reconnected to ensure that the product is properly grounded and to reduce the risk of fire, electric shock, serious injury or death.
W006R2
WARNING
6 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Safety Information
IMPORTANT INFORMATION: During the lifetime of a tumble dryer, it may require service. The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of a tumble dryer, and who are equipped with the proper tools and testing equipment.
NOTE: The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. It must be understood that common sense, caution and carefulness are factors which CANNOT be built into this tumble dryer. These factors MUST BE supplied by the person(s) installing, maintaining or operating the tumble dryer.
Always contact your dealer, distributor, service agent or the manufacturer on any problems or conditions you do not understand.
Locating An Authorized Service Person
Alliance Laundry Systems is not responsible for personal injury or property damage resulting from improper service. Review all service information before beginning repairs.
Warranty service must be performed by an authorized technician, using authorized factory parts. If service is required after the warranty expires, Alliance Laundry Systems also recommends contacting an authorized technician and using authorized factory parts.
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumbler
before servicing.• Never start the tumbler with any guards/
panels removed.• Whenever ground wires are removed
during servicing, these ground wires must be reconnected to ensure that the tumbler is properly grounded.
W240
WARNING
Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you or the inexperienced person making such repairs to the risk of serious injury, electrical shock or death.
W007
WARNING
If you or an unqualified person perform service on your product, you must assume the responsibility for any personal injury or property damage which may result. The manufacturer will not be responsible for any injury or property damage arising from improper service and/or service procedures.
W008
CAUTION
70291301 7© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Safety Information
Safety Warnings and DecalsSAFETY WARNINGS and decals have been provided in key locations to remind you of important precautions for the safe operation and maintenance of your tumble dryer. Please take the time to review these warnings before proceeding with service work.
All decals have been designed and applied to withstand washing and cleaning. Decals should be checked periodically to be sure they have not been damaged, removed, or painted.
Safety Precautions for Servicing Tumble Dryers
Prior to servicing tumble dryer:
• Disconnect electrical service and “lockout” to prevent unintentional connection.
• Shut off supply gas valve.
• Allow machine to cool prior to servicing.
After servicing tumble dryer:
• Control/access panels must be reinstalled.
• Motor/drive/belt guards must be reinstalled.
• Contactor/junction/accessory box covers must be reinstalled.
• Use a non-corrosive leak detection solution to check all pipe connections for gas leaks. DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS!
• The loading door switch, lint door switch and airflow switch must be operating properly.
8 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 2Introduction
Model IdentificationInformation in this manual is applicable to these models:
Includes models with the following control suffixes:
Gas Steam Electric
T30
CHD30STG2-CAT30LCHD30STG2-CAT30NCHD30STG2-CTT30LCHD30STG2-CTT30NCHD30STG2-CUT30LCHD30STG2-CUT30NDRST30G2-BAT30LDRST30G2-BAT30NDRST30G2-BTT30LDRST30G2-BTT30NDRST30G2-BUT30LDRST30G2-BUT30NHAT30LHAT30NHTT30D
HTT30LHTT30NHUT30LHUT30NIPD30STG2-ITT30LIPD30STG2-ITT30NLTT30LLTT30NMTT30NNTT30NPAT30LPAT30NPTT30LPTT30N
PUT30LPUT30NSAT30LSAT30NSTT30LSTT30NSUT30LSUT30NUAT30LUAT30NUTT30LUTT30NUUT30LUUT30N
CHD30STS2-CTT30SCHD30STS2-CUT30SDRST30S2-BTT30SDRST30S2-BUT30SHTT30SHUT30SIPD30STS2-ITT30SPTT30SPUT30SSTT30SSUT30SUTT30SUUT30S
CHD30STE2-CTT30ECHD30STE2-CUT30EDRST30E2-BTT30EDRST30E2-BUT30EHTT30EHUT30EIPD30STE2-ITT30EPTT30EPUT30ESTT30ESUT30EUTT30EUUT30E
3O – DX4 OPL CX – prep for coin drop NX – NetMaster coin ready3V – DX4 vended CY – prep for card NY – NetMaster card ready3X – DX4 prep for coin EC – EDC electronic coin OM – OPL microBC – basic electronic, coin EX – EDC coin ready ZC – NetMaster coin networkBL – basic electronic, central pay EY – EDC card ready ZR – NetMaster card networkBX – basic electronic, prep for coin MT – manual timer ZX – NetMaster coin ready networkBY – basic electronic, prep for card NC – NetMaster coin ZY – NetMaster card ready networkCD – rotary coin drop NR – NetMaster card
70291301 9© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Introduction
Serial Plate LocationWhen calling or writing for information about your product, be sure to mention model and serial numbers. Model and serial numbers are found on the serial plate on the rear of the machine and inside the upper loading door hinge.
Customer ServiceIf literature or replacement parts are required, contact the source from which the machine was purchased or contact Alliance Laundry Systems at (920) 748-3950 for the name and address of the nearest authorized parts distributor.
For technical assistance, call (920) 748-3121.
Wiring DiagramThe wiring diagram is located inside the contactor or junction box.
Models starting Serial No. 0309____ or later will have the wiring diagram part number in the lower portion of the electrical data on the serial plate.
MODEL NO:
SERIAL NO:
V-/ HERTZ/ PHASE
AMPS, WIRES + GROUND
TOTAL kW, MOTOR kW
REQ'D CIRCUIT BREAKER: AMPS
FAN OUTPUT:
@MAX "WC STATIC PRESSURE
EQUIPPED FOR: GAS@ "WC MANIFOLD PRESS.MIN SUPPLYPRESSURE:
ANS 72152CLOTHES DRYER.VOL II
CGA 72
AMPLFIEDRER
TESTED FOR NATURAL & LIQUID PETROLEUM GASSES
MAX SUPPLYPRESSURE:"WC. "WC.
INPUT: BTU/hr @ BTU/cu.ft.
MADE IN U.S.A./FABRIQUE AU ETATS UNIS/FABRICADO EN LOS ESTADOS UNIDOS 70051001
TMB1961P
10 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Introduction
How A Tumble Dryer WorksA tumble dryer uses heated air to dry loads of laundry.
When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumble dryer and over the heat source (burner flame for gas, heating element for electric, and coil for steam).
The heated air moves into the cylinder, where it is circulated through the wet load by the tumbling action of the cylinder.
The air then passes through the lint filter, exhaust fan, and is vented to the outdoors.
1
2
3
T002CE3A
1
2
3
70291301 11© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 3Troubleshooting
IMPORTANT: Refer to wiring diagram for aid in testing tumble dryer components.
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumble dryer before servicing.• Close gas shut-off valve to gas tumble dryer before servicing.• Close steam valve to steam tumble dryer before servicing.• Never start the tumble dryer with any guards/panels removed.• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumble dryer is properly grounded.W002R1
WARNING
12 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
1. Tumble Dryer Does Not Start
Tumbler Does Not Start
Is motor relay
inoperative?
Test relay and replace if
necessary.
Yes
Isloading door
open?
No
Close loading door
completely.
Isdrying timer inan off position (Manual Timer
Models)?
Yes Turn drying timer on.
Check that proper amount
of coins are inserted.
Is thePUSH-TO-
START button not properly
activated (Manual Timer
Models)?
Press andhold PUSH-TO-START button
for three seconds.
Is theelectrical power
off or circuit breaker or fuse
blown?
Close and lock lint drawer.
Check fuse(in junction box) and replace if
necessary.
Is there a blown fuse on tumbler?
Test coin drop and replace if inoperative.
YesIs coin drop inoperative?
Is there an incorrect
amount of coins inserted into coin drop?
No
No
Yes
No
Yes
Check power supply, or
replace fuses.
No
Is the lint drawer open?
No
Yes
No
Yes
Yes
TMB2207S
Yes
No
70291301 13© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
2. Motor Does Not Start
Motor Does Not Start
Is theelectrical power
off or circuit breaker fuse
blown?
No
Is theloading doorswitch or lint
drawer switch not closed or switch
inoperative?
Is thedoor switch improperly adjusted?
No
Check power supply, or replace
fuses.
Yes
Close door, drawer or test
switch and replace if
inoperative.
Yes
Refer to Installation Manual for door
switch adjustment.
Yes
Is the start circuit not complete?
YesPress and hold
PUSH-TO-START button for three
seconds.
Is the motor inoperative?
Yes Have motor tested and replace if inoperative.
No
Is thecylinder or
cylinder motor binding?
No
Refer to wiring diagram.
Yes
Replace fan or motor assembly.
Yes
Replace cylinder, bearing, rollers, or motor assembly.
Yes
Is the transformer inoperative?
Yes Test and replace if necessary.
Is themotor relay inoperative?
Yes Test relay and replace if inoperative.
Isthe fan or fan
motor binding?
Is therebroken, loose,
or incorrectwiring?
No
No
No
Is theairflow switch inoperative
(Hyrid Timer Models)?
Yes Test switch, replace or adjust
as required.
No
TMB2208S
No
No
14 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
3. Motor Overload Protector Cycles Repeatedly
TMB1904S
Motor Overload Protector Cycles
Repeatedly
Is voltage correct?
Refer to Installation Manual for electrical
requirements.
Yes
Is clothes load too large?
No
Remove part of load.
Yes
Is clothes cylinder binding?
Check cylinder for binding.
Is wiring adequate?
No
Yes
No
Check with local power company to ensure that
wiring is adequate.
Yes
Is make-up air adequate?
Refer to Installation Manual for make-up air
requirements.
No
Yes
Is there lint buildup around tumbler or poor maintenance?
Clean lint accumulation
on and around the motors.
No
Yes
Is there broken, loose or incorrect
wiring?
Refer to wiring diagram.No
Yes
70291301 15© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
4. Motor Runs But Cylinder Does Not Turn
Motor Runs But Cylinder
Does Not Turn
Is cylinder belt
broken?
Replace cylinder belt.
Is cylinder binding?
Check cylinder for binding.
Yes
No
Yes
TMB1905S
16 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
5. Motor Does Not Stop
Motor Does
Not Stop
Is the door
switch or lint
drawer switch
not working
properly?
Test switches
and replace if
inoperative.
Is coin drop
not working
properly?
Test coin drop
and replace if
inoperative.
Is wiring
incorrect?
Refer to wiring
diagram.
Is electronic
control
inoperative?
Replace
electronic
control.
Is motor
relay
inoperative?
Test relay and
replace if
inoperative.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
TMB1906S
70291301 17© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
6. Burner Does Not Ignite
Burner Does Not Ignite
Is therean improper or
inadequate exhaust system?
No
Are thereblown fuses or
tripped circuit breakers in external electric
supply line?
Isdrying
selector in the“Cool Down”
portion ofcycle?
No
Refer to Installation Manual for
exhaust system requirements.
Yes
Check fuses or circuit breaker.
Yes
Reset switch on microprocessor.
Yes
Isthe cabinet thermostat
inoperative?
Yes Test thermostat and replace if inoperative.
Isthere an
insufficient gas supply?
Yes
Open partially closed gas shut-off valve, or
correct low gas pressure. Check
manifold pressure and adjust to
pressure specified on serial plate. If
pressure cannot be obtained, have your local gas company
check main gas pressure.
No
Is there inadequate
ductwork and make-up
air?
No
Tumbler is equipped for type of gas
specified on serial plate. If orifices are different from that specified on serial plate, obtain and
install correct orifices.
Yes
Clean lint compartment. Check
damper for lint accumulation. Check
ductwork for lint buildup.
Yes
Refer to Installation Manual to ensure that ductwork and
make-up air openings are sized
accurately.
Yes
Is there lint
buildup?
Are the orifices
incorrect?
TMB2209S-a
No
Continued on next page
Is stove limit
thermostat 1 inoperative?
Test thermostat 1 and replace if inoperative.
No
Yes
Is stove limit
thermostat 2 inoperative?
Test thermostat 2 and replace if inoperative.
No
No
No
No
Yes
18 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
6. Burner Does Not Ignite (continued)
Continued from previous page
Is there an
improper igniter to burner tabclearance?
Are valve coils inoperative?
No
Clearance should be
0.110 - 0.140 inch (2.79 - 3.55
mm).
Yes
Check valve coils and replace if
necessary.
Yes
Isthere a blown
fuse on tumbler?
Yes
Check fuse (located in
control box) and replace if
necessary.
Isgas shut-off valve in the
closedposition?
Yes Open shut-off valve.
Ismotor switch inoperative?
No
Replace IEI control.
Yes
Replace motor.Yes
Is the IEI control
inoperative?
TMB2209S-b
Yes Connect ground wire to ground terminal.
Is theground wire from Instant
Electronic Ignition (IEI) board not connected to
groundterminal?
No
Isthere broken,
loose or incorrectwiring?
Yes Referto wiringdiagram.
Is the lint drawer not
closed properly?
YesUnlock and open lint drawer. Close drawer ensuring a tight fit, then lock.
Is theairflow switch inoperative?
Test switchand replace
if inoperative.
Yes
No
No
No
No
No
No
Continued on next page
No
70291301 19© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
6. Burner Does Not Ignite (continued)
Continued from previous page
Test and replace as needed.
Iswrong
transformer configuration
harnessinstalled?
Yes
Check incoming voltage and install
correct configuration
harness.
TMB2209S-c
Is therean inoperative
microprocessor or hybrid timer?
Yes
No
Is Instant Electronic
Ignition (IEI) control in safety
lockout?
Reset IEI control by opening and closing loading door. (Non-
CE models only)
Reset IEI by pressing reset
button on back of unit. (CE models
only)
No
Yes
20 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
7. Burner Ignites and Goes Out Repeatedly
Burner Ignites and Goes Out Repeatedly
Is there insufficient gas
pressure?
Check gas supply and pressure.
Yes
Is the cabinet thermostat
inoperative?
Yes Test thermostat and replace if inoperative.
Is theexhaust system
improper or inadequate?
YesRefer to
Installation Manual for exhaust system
requirements.
No
Doestumbler have
improper orifices?
Yes
Tumbler is equipped for type of gas specified on
serial plate. If orifices are different from that
specified on serial plate, obtain and install correct orifices.
No
Isthere excessiveigniter to burner
clearance?
YesClearance should be
0.110 - 0.140 inch (2.79 - 3.55 mm).
Isthere
inadequate make-up air?
YesRefer to
Installation Manual for make-up air requirements.
No
Is the thermistor
inoperative?
Yes
No
Replace thermistor.
Is the control heater relay
malfunctioning?
YesReplace control.
No
Is there broken, loose or
incorrect wiring?
Yes Refer to wiring diagram.
No
Yes Repair damper to working order.
Are the back draft dampers
locked in closed position?
No
TMB1908S
No
Is stove limit
thermostat 1 inoperative?
Test thermostat 1 and replace if inoperative.
No
Yes
Is stove limit
thermostat 2 inoperative?
Test thermostat 2 and replace if inoperative.
No
No
Yes
70291301 21© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
8. Burner Does Not Shut Off
Burner Does Not Shut Off
Are there impurities on gas
valve seat, preventing valve
from closing?
Replace gas valve.
Is wiring correct?
Refer to wiring diagram.
Is control heater relay
malfunctioning?
Replace control.
Yes
No
Yes
No
Yes
TMB1909S
22 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
9. Clothes Do Not Dry
Clothes Do Not Dry
Is thereenough heating
time allocated for the load?
Yes
Is the burner igniting?
Start cycle again with enough time to
dry load.
No
Refer toBurner Does Not Ignite flowchart.
No
Remove excess water.
Isthe clothes
load too large?
Yes
Remove part of load. Maximum
load is 30 pound dry weight (cotton load) for 30 pound
Tumbler, etc.
Is theexhaust system
improper or inadequate?
YesRefer to Installation Manual for exhaust system equirements.
No
Isthe voltage incorrect?
No
Refer toBurner Ignites and Goes Out
Repeatedly flowchart.
Yes
Set selectorfor highersetting.
Yes
Refer to Installation Manual for electrical
requirements.
Yes
Is there inadequate make-up
air?
Yes Refer to Installation Manual for make-up
air requirements.
Is theexhaust duct to
the outside blocked?
Yes Clean duct to remove blockage.
Isthe drying selector
improperly set?
Doesthe burner ignite
and go out repeatedly?
No
No
No
TMB2210S-a
No
Continued on next page
Is theretoo much water in
articles beingdried?
Yes
No
Yes
No
70291301 23© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
9. Clothes Do Not Dry (continued)
Continued from previous page
Is the lint screen clogged?
Is the thermistor inoperative?
No
Clean lint screen.Yes
Replace thermistor.Yes
Is the exhaust damper binding?
Yes Adjust damper so it turns freely.
Is thecylinder speed
too fast?
YesCheck belt is not riding on outer
diameter of motor pulley.
TMB2210S-b
No
No
24 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
10. Tumble Dryer Overheating
Tumbler
Overheating
Does
tumbler
have incorrect
main burner
orifices?
No
Is gas
pressure too high or
low?
Is the
make-up air
inadequate?
No
Obtain and install
correct orifices.Yes
Adjust gas pressure
as specified on
serial plate.
Yes
Refer to Installation
Manual for make-up
air requirements.
Yes
Is there
lint buildup?
Yes
Clean lint
compartment. Check
damper for lint
accumulation. Check
ductwork for lint
buildup.
Is the
exhaust system
restricted or
inadequate?
Yes
Remove obstruction
or lint build up from
exhaust ductwork.
Refer to Installation
Manual for exhaust
system
requirements.
No
Is the
control heater
relay
malfunctioning?
No
Check wiring to
ensure thermistor
is connected.
Replace
thermistor if
necessary.
Remove lint build-
up on thermistor.
Yes
Adjust damper
so it turns
freely.
Yes
Replace control.Yes
Are
the safety covers
missing, allowing
cool air to enter
tumbler?
YesReplace covers.
Is the
lint screen
clogged with
fabric
softener?
Yes Replace lint
screen.
Is the
exhaust
damper
binding?
Is the
thermistor
sensor
inoperative?
No
No
No
TMB1911S
No
No
Are there
holes in cabinets
due to foreign
objects?
Yes Repair/replace
cabinet
components.
No
70291301 25© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
11. Burner Not Burning Properly
Burner Not Burning Properly
Is there lint/dirt in burner tube?
Is the gaspressure too high
or low?
No
Disassembleburner and
blow out lint/dirt.
Yes
Check serial plate on back of
tumbler for correct gas pressure.
Yes
Isthe airflow switch not functioning properly?
Yes Replace airflowswitch.
Is there inadequatemake-up
air?
YesRefer to
Installation Manual for make-up air requirements.
TMB2211S
No
Yes Clean off lint.Is there lint buildup around gas valve
spud?
No
Doesthe tumbler have
incorrectorifices?
Yes
Tumbler is equipped for the type of gas specified on serial plate. If orifices are different from that specified on serial plate, obtain and
install correct orifices.
Is theexhaust duct restricted or
blocked?
Yes Disassemble and clean
exhaust system.
No
No
No
26 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
12. Loading Door Opens During Operation
Loading Door Opens During
Operation
Is tumbler improperly leveled?
Refer to Installation Manual for leveling
leg adjustment.
Is clothes load too large?
Remove part of load and restart tumbler.
Is loading door strike adjusted
incorrectly?
Refer to Adjustments
Section for strike adjustment.
Yes
No
Yes
No
Yes
TMB1913S
NOTE: All tumble dryer panels must be in place and on the machine for proper operation.
70291301 27© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
13. Cylinder Continues to Spin with Door Open
Cylinder Continues To
Spin With Door Open
Is door switch
inoperative?
Replace door switch.
Yes
TMB2186S
Is motor relay inoperative?
Replace relay in control box.
No
Yes
NOTE: All tumble dryer panels must be in place and on the machine for proper operation.
28 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
14. Coin Does Not Fall into Coin Vault or Coin Drop Sensor Does Not Register That Coin Has Been Entered
IMPORTANT: Never use oil to correct coin drop problem. Oil residue will prevent coins from rolling properly.
IMPORTANT: Do not bend or damage mechanical parts within coin drop.
Coin Does Not Fall Into Coin Vault or Coin Drop Sensor Does Not
Register That Coin Has Been Entered
Is proper electrical
power supplied to coin drop?
Incorrect electrical connection may
prevent coins from registering in coin drop.
Refer to wiring diagram.
No
Is machine
level?
Machines that are not level may prevent coins from following through required check stages
of drop. Refer to Installation Manualfor instructions on leveling machine.
Is coin drop
clean?
Residue or lint build-up may prevent coins from
following through required check stages
of drop. Clean coin drop.
Yes
No
Yes
No
TMB1915S
Is sensoroperative?
Yes
Replace coin drop sensor.
No
70291301 29© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
Troubleshooting Coin DropIf coin drop is not accepting coins, perform the following:
1. Clean coin drop. Refer to Paragraph 17.2. On electronic coin drops with an old-style
tension spring (shown in Figure 1 and Figure 3), test and replace tension spring using the following instructions.
Remove Coin Drop From Machine1. Disconnect electrical power to machine and drop.2. Remove coin drop from machine.
Test Tension Spring1. Push coin return button to open and close coin
drop cover to clear possible coin jams. Refer to Figure 1.
2. Manually hold down coin drop cover and insert coin. Refer to Figure 2.
3. If coin drop now operates properly, replace tension spring using instructions on following pages.
Replace Tension Spring1. Move tension spring downward until cover catch
is free. Refer to Figure 3.
2. Open cover for coin drop.3. Place a small flathead screwdriver under right
side of tension spring and lift up. Refer to Figure 4.
4. Use screwdriver to move spring approximately 3 mm to left.
5. Lift spring over left tab. Refer to Figure 4.6. Rotate spring clockwise, 40 to 60 degrees, until it
is free from right tabs. Refer to Figure 5.
Figure 1
Figure 2
MIX7B
Coin Drop Cover
Coin Return Button
Tension Spring
MIX6B
Coin Drop Cover
Figure 3
Figure 4
Figure 5
DRY2088N
Cover Catch
Tension Spring
MIX2B
Small Flathead Screwdriver
Right Side of Tension Spring
Left Tab
MIX3B
Tabs
Center Tab
30 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
7. Use screwdriver to remove spring from center tab. Refer to Figure 5.
8. Lift spring, with attached clip, off drop.9. Remove clip from spring. Refer to Figure 6.
10. Attach clip to new tension spring, Part No. 209/00598/02.
11. Place clip, installed on spring, in slot on coin drop. Refer to Figure 7.
12. Use a small flathead screwdriver to push spring under center tab. Refer to Figure 8.
13. Lift spring gently to place in position under left tab.
14. Push spring to right until it snaps into position. Refer to Figure 4.
15. Close coin drop cover.16. Move tension spring over cover catch. Refer to
Figure 3.
Reinstall Coin Drop Into Machine1. Reinstall coin drop into machine.2. Reconnect electrical power to machine and drop.3. Add a coin to drop to verify that coin drop is
operating properly and that electrical connection is working properly.
Figure 6
Figure 7
MIX4B
Clip
MIX8BSlot
Figure 8
MIX5B
Small Flat Screwdriver
Center Tab
Left Tab
70291301 31© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 4Adjustments
15. Troubleshooting and Cleaning Coin Drop
When a coin is placed into coin slot, the coin should roll down drop and be heard dropping into coin vault. If coin does not fall into coin vault or if coin drop sensor does not register that coin has been entered, follow troubleshooting instructions below.
16. Troubleshooting Coin DropIs proper electrical power supplied to coin drop? Incorrect electrical connection may prevent coins from registering in coin drop. Refer to wiring diagram and service manual for proper connections.
Is machine level? Machines that are not level may prevent coins from following through required check stages of drop. Refer to Installation Instructions for instructions on leveling machine.
Is coin drop clean? Residue or lint build-up may prevent coins from following through required check stages of drop. Refer to Cleaning Coin Drop instructions below.
IMPORTANT: Never use oil to correct coin drop problems. Oil residue will prevent coins from rolling properly.
IMPORTANT: Do not bend or damage mechanical parts within coin drop.
17. Cleaning Coin DropThe electronic coin drop should be cleaned once a year. Clean the drop more often if it is exposed to high
levels of residue or lint build-up. Follow the instructions below for cleaning the coin drop.
1. Disconnect electrical power to machine and drop.
2. Remove coin drop from machine.
3. Open cover of coin drop. Refer to instructions for your coin drop below.
Coin Drops with Old-Style SpringRefer to Figure 9.
a. Move spring downward until cover catch is free. Refer to Figure 10.
NOTE: Do not lift or overbend the spring in any direction.
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumble dryer before servicing.• Close gas shut-off valve to gas tumble dryer before servicing.• Close steam valve to steam tumble dryer before servicing.• Never start the tumble dryer with any guards/panels removed.• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumble dryer is properly grounded.W002R1
WARNING
DRY2088N
1 Spring
Figure 9
DRY2088N
1
32 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Adjustments
b. Open cover for coin drop. Refer to Figure 11.
Coin Drops with New-Style Spring Refer to Figure 12.
Figure 12
c. Open cover of coin drop. Refer to Figure 13.
NOTE: Do not overbend the spring by opening cover too far.
Figure 13
4. Clean the coin path with a soft brush and wipe exposed surfaces with an alcohol moistened cloth. Refer to Figure 14 and Figure 15.
DRY2088N
1 Catch
Figure 10
DRY2089N
1 Cover
Figure 11
DRY2088N
1
1
DRY2404N
1 Spring
DRY2408N
1 Spring
DRY2404N
1
DRY2408N
1
70291301 33© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Adjustments
.
5. Clean residue from coin rail with an alcohol moistened cloth. Refer to Figure 16.
6. Clean light sensors with a soft brush or air spray duster. Refer to Figure 17.
7. Close cover for coin drop.
8. Coin Drops with OLD-Style Spring – Move spring back over cover catch.
9. Reinstall coin drop into machine.
10. Reconnect electrical power to machine and drop.
11. Add a coin to drop to verify that coin drop is operating properly and that electrical connection is working properly.
DRY2090N
Figure 14
DRY2405N
Figure 15
DRY2406N
1 Alcohol Moistened Cloth
Figure 16
DRY2090N
OLD-STYLE SPRING COIN DROP
DRY2405N
NEW-STYLE SPRING COIN DROP
1
DRY2407N
1 Light Sensors
Figure 17
11
34 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Adjustments
Notes
70291301 35© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 5Electronic Control Troubleshooting
18. Theory of Operation of Instant Electronic Ignition
IMPORTANT: The Non-CE Marked Instant Electronic Ignition system will attempt to light the gas by sparking for approximately 12 seconds. If gas ignition does not take place within approximately 12 seconds, the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open until Instant Electronic Ignition control is reset. To reset Instant Electronic Ignition control, remove power from control by opening and closing the tumble dryer door. If condition persists, check that the gas shut-off valve is in “on” position and that the gas service is properly connected.
If condition persists:
a. Check resistance of high tension lead (approximately 1000 ohms/inch), and replace if not within resistance range.
b. Check voltage present at valve.
c. Check that machine is properly grounded.
d. Check the igniter gap (gap should be .110 to .140 inch).
e. Check that burner ports are not blocked or plugged under the igniter.
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumble dryer before servicing.• Close gas shut-off valve to gas tumble dryer before servicing.• Close steam valve to steam tumble dryer before servicing.• Never start the tumble dryer with any guards/panels removed.• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumble dryer is properly grounded.W002R1
WARNING
36 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
19. Cannot Perform Infrared (IR) Communication
T027D
Check the following:
- IR communication disabled by manual programming.
- Is the IR window on the control covered or blocked.
- if needed, change electronic control board.
Check the following:
- low battery on microwand. - is the IR window covered or
blocked on the control. - if needed replace the
electronic control. - is the IR cap properly attached
to the microwand.
Communication sequence checks
out.
Attempt to communicate with
the electronic control from the
microwand.
Aim microwand closer and try again.
Is there a response of any kind from the electronic control?
Does the control respond?
Does the electronic control display E:OF
or -C-?
NO
YES
-C-
E:OF
NO
YES
Single and stacked. Gas and electric heat. Single and three phase
supply.
T027D
70291301 37© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
20. Coins Ignored When Entered
TMB1822S
Does the display on the EDC control increment
properly?
Is connector H2 firmly seated in its receptacle?
Is the 3 pin connector between coin drop and
control connected correctly?
Are wires exiting coin drop optical sensor cracked or broken?
Exit diagnostic testing and reset
control. (Prompting for vend price)
Reconnect and run diagnostic test
again.
Reconnect and run diagnostic test
again.
Replace coin drop or optic switch.
Replace coin drop or optic switch.
If problem still exists then replace
the EDC control.
Start coin drop diagnostic tests.
YES
NO
YES
YES
NO
YES
NO
NO
Single and stacked units. Gas and electric heat. Single and three
phase voltage.
TMB1822S
38 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
21. Control Display – Door Open Light “On”
T028D
Is there voltage at H4-6 on the electronic
control?
Replace electronic control.
Is there power supplied to the unit?
NO
Is there voltage to input of primary fuses?
Is there voltage to output side of the primary fuses?
Is there voltage across terminals 1 & 2 of
transformer primary?
Plug unit in and run it.
Correct wiring between primary fuses and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuses and transformer.
Is there voltage across terminals 2 & 3 of
transformer secondary?
Replace transformer.
Is there voltage at the input of the
secondary fuse?
Is there voltage to output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
NO
NO
NO
NO
NO
NO
YES
(1)
(6)
(7)
(8)
(9)
(10)
(11)
(2)
(3)
(4)
(5)
YES
YES
YES
YES
YES
YES
Is there voltage to N.O. of door
switch?
With door closed is there voltage to COM of door
switch?
Is there voltage to N.O. of lint drawer
switch?
Is there voltage to COM of lint drawer
switch with lint panel closed?
Check for proper operation replace if
necessary.
Correct wiring between N.O. on lint drawer and COM on
door switch.
Correct wiring between N.O. and
output of secondary fuse.
Check for proper function of door switch replace if
necessary.
Correct wiring between H4-6 of
electronic control and COM of lint drawer
switch.
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Single and stacked units. Gas and electric heat. Single and three
phase supply.
Reference voltage checks to transformer
neutral.
T028D
70291301 39© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
22. Control Display – “door” Error on 25, 30, Stacked 30 and 35 Pound Tumble Dryers with 24 Volt EDC Controls
TM
B17
88S
1
2
34
5
7
6
89
1011
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Electronic Control Troubleshooting
23. Control Display – No Visible Display – OPL Microprocessor Models
TMB1823S
Is there voltage supplied to the unit?
Is there voltage to the input side of the primary fuse(s)?
Is there voltage to the output side of the primary fuse(s)?
Is there voltage across the primary side
of the transformer?
Is there voltage across 1 & 4 of transformer
secondary?
Is there voltage across terminals H3-3 &
H3-4 on OPL Micro?
Is there voltage across fuse on OPL Micro?
Connect supply voltage and run unit.
Correct wiring between primary fuse and supply.
Replace primary fuse.
Correct wiring between transformer
and primary fuse.
Replace transformer
Correct wiring between OPL Micro
and transformer secondary.
Replace OPL Micro.
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Replace fuse.
Gas, steam and electric heat. Single and three
phase supply.
Note: Reference voltage to supply neutral.
TMB1823S
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Electronic Control Troubleshooting
24. Control Display – No Visible Display – Power On
T025D
Is there voltage across H4-2 & H4-5 on the
EDC control?
Replace EDC Control.
Is there power supplied to the unit?
NO
Is there voltage to input of primary fuses?
Is there voltage to output side of the
primary fuses?
Is there voltage across terminals 1 & 2 of
transformer primary?
Plug unit in and run it.
Correct wiring between primary fuses and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuse and transformer.
Is there voltage across terminals 2 & 3 of
transformer secondary?
Replace transformer.
Is there voltage at the input of the
secondary fuse?
Is there voltage to output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between H4-2 and
secondary fuse.
YES
NO
NO
NO
NO
NO
NO
NOYES
YES
YES
YES
YES
YES
YES
Single and stacked units. Gas and electric heat. Single and three
phase supply.
T025D
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Electronic Control Troubleshooting
25. Will Not Start – Electric – Manual Timer
T050D
Is there power supply voltage coming to the
tumbler?
Connect power and run the cycle.
Is there voltage at the primary side
of the transformer at terminals 1 and 2?
NO
YES
NO Change the primary fuse to the transformer.
Correct wiring between power
supply and transformer.
Still no voltage
YES
there voltage at thesecondary side of the
transformer at terminal2 and 3?
Replace the transformer.
NO
YES
Is there voltage to the output side of the secondary fuse?
Change the secondary fuse.
NO NOCorrect the wiring
between the secondary fuse and
the transformer.
Is there voltage to the N.O. terminal of the
door switch?
YES
NO
Correct the wiring between the door
switch and the secondary fuse.
YES With door closed Is there voltage at COM of the door switch?
NO
Check for proper operation,
replace the door switch if
necessary.
YES Is there voltage to the COM of the lint panel
switch?
NO
Correct wiring between lint panel switch and door
switch.
YES
With lint panel closed is there votlage to
N.O. terminal of the liint panel switch?
NOReplace lint panel switch.
YES Refer to NO MOTOR RUN (run circuit.)
NOTE: White wires are transformer "neutral"
For stacked units.
Correct wiring between upper and
lower pocket.
Manual Timer, with and without time delay board. Single and stacked units. Single and three phase power supply.
T050D
Is
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Electronic Control Troubleshooting
26. Will Not Start – Electric – Rotary Coin Drop
T075D
Coin Drop with and without time delay boards. Single and stacked units. Single and three phase
power supply.
Is there power supply voltage coming to the
unit?
Connect power to the unit and run
cycle.
NO
YES
Is there voltage at the primary side of the
transformer at terminals 1 & 2?
NO
YES
Is the primary fuse good?
YES
Correct wiring between transformer
and power supply.
Replace fuse and
run machine.
NO
Is there voltage at the secondary side of the
transformer at terminal 2 and 3?
Replace the transformer.
NO
YES
Is there voltage to the output side of the
secondary fuse?
Is the secondary fuse good?
NO
Replace fuse and
run machine.
NO
YES
Correct wiring between secondary of transformer and
fuse.YES
Is there voltage to N.C. terminal of
switch A on rotary coin drop?
Note: Reference voltage to transformer neutral.
(White wire)
Correct wiring between rotary coin drop and
secondary fuse.
NO
YES
Is there voltage on the COM terminal of switch
A?
Note: The following checks are made with
the vend price satisfied.
Replace switch A.NO
YES
Is there voltage across coinmeter timer
motor?
Correct wiring between
coinmeter timer motor and COM
on switch A.
NO
Does the coinmeter timer motor
advance?
YES
NO
YES
Replace coinmeter timer motor.
Correct wiring between N.O. on door switch and
COM on switch A.
Is there voltage at N.O. terminal of the
door switch?
NO
With the door closed is there
voltage across the door switch?
Check door switch for proper operation, replace if necessary.
Is there voltage to the N.O. terminal of
the lint panel switch?
Correct wiring between N.O. on the lint panel switch and COM of door switch.
With the lint panel closed is there voltage across the lint panel switch?
Check lint panel switch for proper
operation and replace if necessary.
YES
YES
NO
NO
YES
YES
NO
Is the unit equipped with time delay
boards?
YES
NO
Continued on next page at step 1.
Continued on next page at step 2.
Step 3 continuation.
T075D
44 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
26. Will Not Start – Electric – Rotary Coin Drop (continued)
T076D
Correct wiring between 2A of start switch and COM of
lint panel switch.
Is there voltage at 2A of the start
switch?
Is there voltage at terminal 7 of the motor relay?
NO
YES
NO
YES
Correct wiring between 7 of
motor relay and COM of lint panel switch.
Refer to NO MOTOR RUN (run circuit).
Is there voltage to H1-2 on TMR1
board?
STEP 1
Correct wiring between H1-2 and output of
secondary fuse.
With vend price satisfied is there
voltage across N.C. & COM of switch A?
NO
YES
YES
NO
Replace switch A.
Is there voltage across the timer motor?
Is there voltage across H1-6 & H1-8 of
TMR1?
Correct wiring between timer
motor and COM on switch A.
NO
YES
Correct wiring between H1-6 and COM on switch A.
Is there voltage across H1-2 & H1-3 of
TMR1?
NO
YES
Is there voltage to N.O. of door switch?
Replace TMR1.YES
NO
Correct wiring between N.O. of door switch and H1-3 of TMR1.
Continue at step 3 on previous page.
YES
NO
Does coinmeter timer motor advance?
YES
NO Replace timer motor.
STEP 2
Note: Following tests are conducted with vend price satisfied.
Does the unit have single phase or three phase power supply?
Single phase
3 phase
Is there voltage at terminal 14 of the
motor control relay?
Correct wiring to terminal 14 of motor control
relay.
Refer to NO MOTOR RUN (Run
Circuit).
YES
NO
T076D
70291301 45© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
27. Will Not Start – Gas – Manual Timer
T041D
No motor run (start circuit) Manual Tumblers. Single and stacked unitswith and without time delay.
Is there power supplyvoltage coming to the
tumbler?
Connect powerand run the cycle.
Is there voltageat the primary side of the
transformer atterminals 1 and 2?
NO
YES
NO Change the primaryfuse to thetransformer.
Correct wiringbetween power
supply andtransformer.
Still no voltage
YES
Is there voltagesecondary side of the
at the transformer at terminal2 and 3?
Replace thetransformer.
NO
YES
Is there voltage to theoutput side of thesecondary fuse?
Change thesecondary fuse.
NO NOCorrect the wiring
between thesecondary fuse and
the transformer.
Is there voltage to theinput side of the door
switch?
YES
NO
Correct the wiringbetween the door
switch and thesecondary fuse.
YES Is there voltage to theoutput side of the door
switch?
NO
Replace thedoor switch.
YES Is there voltage to theinput side of the lint
panel switch?
NO
Correct wiringbetween lint panelswitch and door
switch.
YES
Is there voltage to theoutput side of the lint
panel switch?
NOReplace lintpanel switch.
YES Refer to NOMOTOR RUN(run circuit).
NOTE: White wires aretransformer "neutral"
For stacked units.
Correct wiringbetween upper and
lower pocket.
T041D
46 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
28. Will Not Start – Gas – Rotary Coin Drop
T086D
Single & stacked tumblers
with and without time delay.
Is there power supply voltage coming to the
unit?
Connect power to the unit and run
cycle.
NO
YES
Is there voltage at the primary side of the transformer at terminals
1 & 2?
NO
YES
Is the primary fuse good?
YES
Correct wiring between transformer
and power supply.
Replace fuse and
run machine.
NO
Is there voltage at the secondary side of the
transformer at terminal 2 and 3?
Replace the transformer.
NO
YES
Is there voltage to the output side of the secondary fuse?
Is the secondary fuse good?
NO
Replace fuse and
run machine.
NO
YES
Correct wiring between secondary of transformer and
fuse.YES
Is there voltage to N.C. terminal of
switch A on rotary coin drop?
Note: Reference voltage to transformer neutral.
(White wire)Correct wiring
between rotary coin drop and secondary
fuse.
NO
YES
Is there voltage on the COM terminal of switch
A?
Note: The following checks are made with
the vend price satisfied.
Replace switch A.NO
YES
Is there voltage across coinmeter timer motor?
Correct wiring between
coinmeter timer motor and COM
on switch A.
NO
Does the coinmeter timer motor advance?
YES
NO
YES
Replace coinmeter timer motor.
Correct wiring between N.O on door switch and
COM on switch A.
Is there voltage at N.O. terminal of the
door switch?
NO
With the door closed is there
voltage across the door switch?
Check door switch for proper operation, replace if necessary.
Is there voltage to the N.O. terminal of
the lint panel switch?
Correct wiring between N.O. on the lint panel switch and COM of door switch.
With the lint panel closed is there
voltage across the lint panel switch?
Check lint panel switch for proper
operation and replace if necessary.
YES
YES
NO
NO
YES
YES
NO
Is the unit equipped with time delay
boards?
YES
NO
Continued on next page at step 1.
Continued on next page at step 2.
Step 3 continuation.
T086D
70291301 47© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
28. Will Not Start – Gas – Rotary Coin Drop (continued)
T087D
Correct wiring between 2A of start switch and COM of
lint panel switch.
Is there voltage at 2A of the start
switch?
Is there voltage at terminal 7 of the
motor relay?
NO
YES
NO
YES
Correct wiring between 7 of motor relay and COM of lint panel switch.
Refer to NO MOTOR RUN(run circuit).
Is there voltage to H1-2 on TMR1
board?
STEP 1
Correct wiring between H1-2 and output of
secondary fuse.
With vend price satisfied is there
voltage across N.C. & COM of switch A?
NO
YES
YES
NO
Replace switch A.
Is there voltage across the timer motor?
Is there voltage across H1-6 & H1-8 of
TMR1?
Correct wiring between timer motor and COM on switch
A.
NO
YES
Correct wiring between H1-6 and COM on switch A.
Is there voltage across H1-2 & H1-3 of
TMR1?
NO
YES
Is there voltage to N.O. of door switch?
Replace TMR1.YES
NO
Correct wiring between N.O. of door switch and H1-3 of TMR1.
Continue at step 3 on previous page.
YES
NO
Does coinmeter timer motor advance?
YES
NO Replace timer motor.
STEP 2
Note: Following tests are conducted with vend price satisfied.
T087D
48 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
29. Will Not Start – Steam – Manual Timer
T016D
Single and stacked units with and without time delay boards.
Is there power supply voltage coming to the
tumbler?
Connect power and run the cycle.
Is there voltage at the primary side of the
transformer at terminals 1 and 2?
NO
YES
NO Change the primary fuse to the transformer
Correct wiring between power
supply and transformer.
Still no voltage
YES
Is there voltage at the secondary side of the
transformer at terminal 2 and 3?
Replace the transformer.
NO
YES
Is there voltage to the output side of the
secondary fuse?
Change the secondary fuse.
NO NOCorrect the wiring
between the secondary fuse and
the transformer.
Is there voltage to the N.O. terminal of the
door switch?
YES
NO
Correct the wiring between the door
switch and the secondary fuse
YES Is there voltage to the COM terminal of the
door switch?
NO
Replace the door switch.
YES Is there voltage to the COM terminal of the
lint panel switch?
NO
Correct wiring between lint panel switch and door
switch.
YES
Is there voltage to the N.O. terminal of the
lint panel switch?
NO Replace lint panel switch.
YES Refer to NO MOTOR RUN (run circuit) .
NOTE: White wires are transformer "neutral"
For stacked units.
Correct wiring between upper and
lower pocket.
T016D
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Electronic Control Troubleshooting
30. Will Not Start – Steam – Rotary Coin Drop
T062D
Single and stacked tumblers
with and without time delay.
Is there power supply to the unit?
Connect power to the unit and run
cycle.
NO
YES
Is there voltage at the primary side of the transformer at terminals
1 & 2?
NO
YES
Is the primary fuse good?
YES
Correct wiring between transformer
and power supply.
Replace fuse and
run machine.
NO
Is there voltage at the secondary side of the
transformer at terminal 2 and 3?
Replace the transformer.
NO
YES
Is there voltage to the output side of the secondary fuse?
Is the secondary fuse good?
NO
Replace fuse and
run machine.
NO
YES
Correct wiring between secondary of transformer and
fuse.YES
Is there voltage to N.C. terminal of
switch A on rotary coin drop?
Note: Reference voltage to transformer neutral.
(White wire)Correct wiring
between rotary coin drop and secondary
fuse.
NO
YES
Is there voltage on the COM terminal of switch
A?
Note: The following checks are made with
the vend price satisfied.
Replace switch A.NO
YES
Is there voltage across coinmeter timer motor?
Correct wiring between
coinmeter timer motor and COM
on switch A.
NO
Does the coinmeter timer motor advance?
YES
NO
YES
Replace coinmeter timer motor.
Correct wiring between N.O on door switch and
COM on switch A.
Is there voltage at N.O. terminal of the
door switch?
NO
With the door closed is there
voltage across the door switch?
Check door switch for proper operation, replace if necessary.
Is there voltage to the N.O. terminal of
the lint panel switch?
Correct wiring between N.O. on the lint panel switch and COM of door switch.
With the lint panel closed is there
voltage across the lint panel switch?
Check lint panel switch for proper
operation and replace if necessary.
YES
YES
NO
NO
YES
YES
NO
Is the unit equipped with time delay
boards?
YES
NO
Continued on next page column 1.
Continued on next page column 2.
Step 3 continuation.
T062D
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Electronic Control Troubleshooting
30. Will Not Start – Steam – Rotary Coin Drop (continued)
T063D
Correct wiring between 2A of
start switch and COM of lint panel switch.
Is there voltage at 2A of the start
switch?
Is there voltage at terminal 7 of the
motor relay?
NO
YES
NO
YES
Correct wiring between 7 of
motor relay and COM of lint panel switch.
Refer to NO MOTOR RUN (run circuit).
Is there voltage to H1-2 on TMR1
board?
COLUMN 1
Correct wiring between H1-2 and output of
secondary fuse.
With vend price satisfied is
there voltage across N.C. & COM of switch A?
NO
YES
YES
NO
Replace switch A.
Is there voltage across the timer motor?
Is there voltage across H1-6 & H1-8 of
TMR1?
Correct wiring between timer motor and COM on switch
A.
NO
YES
Correct wiring between H1-6 and COM on switch A.
Is there voltage across H1-2 & H1-3 of
TMR1?
NO
YES
Is there voltage to N.O. of door switch?
Replace TMR1.YES
NO
Correct wiring between N.O. of door switch and H1-3 of TMR1.
Continue at step 3 on previous page.
YES
NO
Does coinmeter timer motor advance?
YES
NO Replace timer motor.
COLUMN 2
Note: Following tests are conducted with vend price satisfied.
T063D
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Electronic Control Troubleshooting
31. Will Not Start/Continue Running – EDC Control
T029D
Is there voltage at H4-4 on the EDC
control to transformer neutral?
Is there power supplied to the unit?
Is there voltage to input of primary fuse(s)?
Is there voltage to output side of the primary fuse(s)?
Is there voltage across terminals 1 & 2 of
transformer primary?
Plug unit in and run it.
Correct wiring between primary
fuse(s) and power supply.
Replace primary fuse.
Correct wiring between primary
fuse and transformer.
Is there voltage across terminals 2 & 3 of
transformer secondary?
Replace transformer.
Is there voltage at the input of the secondary
fuse?
Is there voltage to output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
NO
NOYES
YES
Is there voltage to N.O. of door switch?
With door closed is there voltage to COM
of door switch?
Is there voltage to N.O. of lint drawer switch?
Is there voltage to COM of lint drawer
switch with lint panel closed?
Check for proper operation replace if
necessary.
Correct wiring between N.O. on lint drawer and COM on
door switch.
Correct wiring between N.O. and
output of secondary fuse.
Check for proper function of door switch replace if
necessary.
YES
YES
YES
YES
YES
NO
NO
NO
Correct wiring between H4-1 and COM of lint drawer
switch.
Is there voltage at H4-1 on the EDC control board?
YES
Continued on next page.
Replace EDC Control.
NO
NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Note: Test conducted with vend price satisfied and start button
pressed.
Single and stacked units. Gas, electric and steam heat. Single and
three phase supply.
T029D
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Electronic Control Troubleshooting
31. Will Not Start/Continue Running – EDC Control (continued)
T030D
Is there voltage on B terminal of motor
control relay?
Is there voltage to terminal 5 of the
motor control relay?
Is there voltage to terminal 8 of motor
control relay?
Is there voltage across terminals 1 & 4 of
the fan motor?
Does the fan motor run?
Is there voltage at terminal 6 of motor
control relay?
Is there voltage at terminal 9 of motor
control relay?
Correct wiring between B and
H4-4.
Correct wiring between terminal 5 and power supply.
Replace motor control relay.
Correct wiring between fan motor and motor control
relay.
Replace fan motor.
Correct wiring between terminal 6
of motor control relay and supply.
Replace motor control relay.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
NO
Note: Tests conducted with vend price satisfied and start button
pressed.
Continued on next page.
Correct wiring between L1, L2 and
power supply.
Replace motor control relay.
Is the unit equipped with single phase or three phase power?
Is there supply voltage to L1 and L2 of the motor control relay?
Is there votlage across L1 & T1 and L2 & T2?
Single phase
NO
YES
YES
NO
Three phase.Refer to Note on next page
Three phase.Refer to Note on next page
Is unit equipped with single phase or three phase power supply?
Is there supply voltage to L2 & L3 of motor
control relay?
NO
YES
Is there voltage across terminals L2 & T2 and
L3 & T3?
Correct wiring between L2, L3 and
supply.
Replace motor control relay.
YES
NO
Single phase
T030D
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Electronic Control Troubleshooting
31. Will Not Start/Continue Running – EDC Control (continued)
T031D
Is there voltage across terminals 1 & 4 of
cylinder motor?
Does the cylinder motor run?
Correct wiring between cylinder motor and motor
control relay.
Replace cylinder motor.
NO
NO
YES
YES
Motors are operational.
Note: For high voltage three phase supply (380 volts or higher), the cylinder and fan motors are supplied by L1, L2, L3 through the motor relay terminals T1, T2, T3. Make the appropriate adjustments when
doing voltage checks.T031D
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Electronic Control Troubleshooting
32. Will Not Start/Continue Running – OPL Microprocessor Control
T099D
Gas, steam and electric heat.
Single and three phase supply.
Is power supplied to unit?
Is there voltage to output of primary
fuse(s)?
Is there voltage across terminals 1 & 2
on primary of transformer?
Is there voltage across terminals 2 & 3
of transformer secondary?
Is there voltage to input of secondary fuse?
Is there voltage to output of secondary
fuse?
Is there voltage to N.O. terminal of door
switch?
With door closed is there voltage to COM
of door switch?
Is there voltage to N.O. of lint panel
switch?
Is there voltage to COM of lint panel
switch with lint panel closed?
Is there voltage at terminal 8 of OPL
Micro?
Change primary fuse.
Correct wiring between transformer
and primary fuse.
Replace transformer.
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between N.O.
terminal of door switch and
secondary fuse.
Check for proper operation, replace
door switch if necessary.
Correct wiring between N.O. of lint panel switch
and COM of door switch.
Check for proper operation and
replace lint panel switch if necessary.
Correct wiring between terminal 8 of OPL Micro and COM of lint
panel switch.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Continued on next page.
Reference voltage to supply neutral.
Note: Reference voltage to transformer secondary neutral
terminal 3.
Connect supply and run unit.
Is there voltage to input of primary fuse(s)?
Correct wiring between primary fuse and supply.
T099D
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Electronic Control Troubleshooting
32. Will Not Start/Continue Running – OPL Microprocessor Control (continued)
TMB1824S
Is there voltage at terminal 7 on OPL
Micro?
Is
there voltageacross terminals
B & A of motor control relayfor OM model and terminals
0 & 1 for RMmodels?
voltage at terminal Is there
5 on the motor control relay for OM models and
terminal 2 for RM models?
Is there
voltage acrossterminals 5 & 8 of
the motor control relay for OMmodels and terminals 2
& 4 for RMmodels?
Is there voltage across terminals
1 & 4 of fan motor?
Does the fan motor run?
Is there voltage to terminal 6 of motor
control relay?
Is there voltage across terminals 6 & 9 of
motor control relay?
Replace OPL Micro.
Correct wiring to motor control relay.
Correct wiring between motor
control relay and power supply.
Replace motor control relay.
Correct wiring between fan motor and motor control
relay.
Replace fan motor.
Correct wiring between terminal 6 motor control relay and supply
voltage.
Replace motor control relay.
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Tests conducted with cycle selected and start key pad activated.
Reference voltage to supply neutral.
Does the unit have reversing capabilities?
See cylinder rotation. Either
forward or reverse.
YES
NO
Replace motor control relay.
Correct wiring between L1, L2 and
power supply.
Is unit supplied with single phase or three
phase power?
Is there voltage to L1 and L2 of the motor
control relay?
Is there voltage to T1 and T2 of the motor
control relay?
Three phase. Gas and steam. Refer to Note on next page.
Three phase. Gas and steam. Refer to Note on next page.
NO
YES
NO
YES
Single phase
Does the unit have single
phase or three phase supply?
Correct wiring between L2, L3 and
power supply.
NO
YES
Isthere voltage
to T2 and T3 onthe motor control
relay?
Isthere voltage
to L2 and L3 onthe motor control
relay?
Replace motor control relay.
NO
Continued on next page.
NO
Single phase
TMB1824S
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Electronic Control Troubleshooting
32. Will Not Start/Continue Running – OPL Microprocessor Control (continued)
T009D
Is there voltage across terminals 1 & 4 of
the cylinder motor?
Does the cylinder motor run?
Correct the wiring between the
cylinder motor and control relay.
Replace cylinder motor.
YES
YES
NO
NO
Unit operational.
NOTE: For three phase high voltage (380 volts or higher), the cylinder and fan motors are supplied L1, L2, L3 through the motor relay terminals T1, T2, T3. Make
the appropriate voltage checks while doing trouble shooting.
T009D
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Electronic Control Troubleshooting
33. Will Not Run – Electric – Manual Timer
T051D
Is there voltage at terminal C on the
drying timer?
NOCorrect wiring between drying
timer and lint panel switch.
YES
Is there voltage at terminal B on the
drying timer?
NO
YES
Is there voltage across terminals 7 and 8 of
CR1 relay?
Replace drying timer.
NOTE: make sure drying timer is in the "on"
position.
NO
YES
Correct the wiring between CR1 relay and terminal B on
drying timer.
Is there voltage across terminal 3 and 5 of
CR1 relay?
Is there voltage across terminals 2A
& 1A of push to start switch?
Replace CR1 relay.YES
NO
YES
NO
Replace push to start switch.
Is there voltage across COM and N.O. of the airflow switch?
NOTE: This test to be made with push to start
switch pressed in.
YES Adjust the airflow switch or replace if
inoperative.
NOTE: The N.O. contact is closed in the rest position due to the physical
mounting of the switch.
NO
Is the unit equipped with a time delay
board?
NO
Is there voltage across H1-6 & H1-8 on
TMR1?
YES
Correct wiring to TMR1.
NO
YES
Is there voltage across DOB contacts on
TMR2?
Replace time delay board.
YES
NOIs there voltage across terminals H1-4 & H1-8 on TMR2?
YES
NO
CONTINUED ON NEXT
PAGE.
Is there voltage across terminals 5 & 3 on
the CR2 relay?
Replace CR2 relay.
YES
Is there voltage across terminals 7 & 8 of
CR2 relay?
NO
Correct wiring between CR2
relay and airflow switch.
NO
YES
Is there voltage across coils B & A of the
motor control relay?
Correct wiring between motor control relay and airflow
switch.
NO
**
**
**
Check for proper operation of
airflow switch.
**
**
** Tested with the start switch pressed in.
YES
With and without time delay boards.
Single and stacked units. Single and three phase power supply.
T051D
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Electronic Control Troubleshooting
33. Will Not Run – Electric – Manual Timer (continued)
TMB1825S
Is there voltage across terminals
3 & 5 of the fan motor centrifugal switch with
the fan motorrunning?
Replace fan motor.
YES
Is there voltage across terminal 7 & 4 of
the motor controlrelay?
Replace motor control relay.
NO
YES
**
NO
NO
Correct wiring between fan
motor and contact 8 on the motor control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
** Tested with the start switch pressed in.
Is therevoltage at terminal 5
on the motor control relayto supply neutral?
Isthere voltage
across terminals 5 & 3 of the motor control
relay?
Isthere voltage
across terminals 1 & 4 of fan motor?
Correct wiring between terminal 5 and supply voltage.
NO
YES
Replace motor control relay.
YES
NO
YES
Note: Only for non time delay machines
Is this a single phase or three phase unit?
Single phase
Three phase voltage across terminals 14 & 13 of motor control relay?
Replace motor control relay.
Is there voltage to L1of motor control relay?
Correct wiring between L1 and power supply.
Is there voltage to L2of motor control relay?
Correct wiring between L2 and power supply.
voltage acrossL1 to T1 and L2 toT2 on the motorcontrol relay?
Replace motor control relay.
YES
NO
NO
YES
NO
YES
YES
NO
Continued on next page.
NO
TMB1825S
Is there
Is there
70291301 59© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
33. Will Not Run – Electric – Manual Timer (continued)
T053D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact
9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
YES
Is there voltage to terminal 6 on the
motor control relay?
voltage across terminal 6 & 9 of the motor control relay?
Correct wiring between terminal
6 and power supply.
Replace motor control relay.
NO
YES
YES
NO
Is unit single phase or three phase?
Single phase.
Three phase. Is there voltage to L2 on motor control relay?
Correct wiring between motor
control relay and supply.
Is there voltage to L3 on motor control relay?
Correct wiring between motor
control relay and supply.
voltage across L2 to T2 and L3 to T3 on the motor
control relay?
Replace motor control relay.
NO
YES
YES
NO
YES
NO
T053D
Is thereIs there
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Electronic Control Troubleshooting
34. Will Not Run – Electric – Rotary Coin Drop
T072D
Single and Stack with and without time delay. Single and three phase power.
Is there voltage across terminals 2A & 1A
of push to start switch?
YES
NO
Replace push to start switch.
Is there voltage across COM and N.O. of the airflow switch?
YESReplace inoperative
switch or correct airflow vaneoperation.
NOTE: The N.O. contact is closed in the rest position due to the physical mounting
of the switch.
NO
Is the unit equipped with a time delay
board?
NO
YES
Is there voltage across DOB contacts on
TMR2?
Replace time delay board.
YES
NOIs there voltage across terminals H1-4 & H1-8 on TMR2?
YES
NO
Is there voltage across terminals 5 & 3 on
the CR2 relay?
Replace CR2 relay.
YES
Is there voltage across terminals 7 & 8 of
CR2 relay?
NO
Correct wiring between CR2
relay andairflow switch.
NO
YES
Is there voltage across the coil of the motor
control relay?
Correct wiring between motor control relay and airflow
switch.
NO
**
**
**
Check for proper operation of
airflow switch and check wiring.
**
Is there voltage across terminal 7 & 4 of the motor control relay?
Replace motor control relay.
YES
NO
**
**
** Tested with the start switch pressed in.
YES
Is there voltage at terminal 5 on the
motor control relay?
Correct wiring between
terminal 5 and supply
voltage.
NO
YES
**
** Tested with vend price satisfied and with start
switch pressed in.**
Is there voltage to COM of the airflow
switch?
Correct wiring between COM of
airflow switch and 1A on start switch.
YES
NO
Note: Reference voltage to transformer
neutral.
Is unit single phase or three
phase?
Single phase
Continued on next page
COLUMN 2.
Continued on next page COLUMN 1.
Three phase Refer to note.
T072D
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Electronic Control Troubleshooting
34. Will Not Run – Electric – Rotary Coin Drop (continued)
T073D
Replace fan motor.
YES
Is there voltage across terminals 1 & 4 of
fan motor?
NO
Correct wiring between fan
motor and contact 8 on the motor control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
Replace motor control relay.
Is there voltage across terminal 5 & 8 of the motor control relay?
YES
NO
YES
Is there voltage to terminal 6 on the
motor control relay?
Correct wiring between terminal
6 and power supply.
NO
NO
YES
For units without time delay boards.
COLUMN 1
Replace motor control relay.
Is there voltage across terminal 14 & 13 of motor control relay?
COLUMN 2
Correct wiring between L1, L2
and supply.
Is there voltage to L1 & L2 terminals on motor
control relay?
Replace motor control relay.
Is there voltage to T1 & T2 terminals on motor
control relay?
YES
NO
NO
YES
NOYES
Continued on next page COLUMN 1.
Is the machine supplied with single
phase or three phase power?
Single phase
Three phase Refer to Note.
Is there voltage to L2 & L3 terminals on motor control
relay?
Correct wiring between supply
and L2 & L3terminals.
NO
YES
Is there voltage across L2 to T2 and
L3 to T3?
YES
NO
Replace motor control relay.
Replace cylinder motor.
Does the cylinder motor run?
NO
YES
CYLINDER AND FAN MOTORS ARE
OPERATIONAL.
NOTE: For Hi voltage three phase supply (380volts or higher), the cylinder and fan motor are supplied L1, L2, L3 through the motor relay
terminals T1, T2, T3. Make the appropriate adjustments when doing trouble shooting.
T073D
Is therevoltage across
terminals 3 & 5 ofthe fan motor
centrifugal switch withthe fan motor
running?
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Electronic Control Troubleshooting
34. Will Not Run – Electric – Rotary Coin Drop (continued)
T074D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact
9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
YES
COLUMN 1
voltage acrossterminals 6 & 9 of
motor control relay?
NO
YES Replace motor control relay.
T074D
Is there
70291301 63© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
35. Will Not Run – Gas – Manual Timer
T042D
No motor run (run circuit). Single and stacked units with and without
time delay boards.
Is there voltage atterminal c on the
drying timer?
NOCorrect wiringbetween drying
timer and lint panelswitch.
YES
Is there voltage atterminal b on the
drying timer?
NO
YES
Is there voltage acrossterminals 7 and 8 of
CR1 relay?
Replace dryingtimer.
NOTE: make sure dryingtimer is in the “on”
position.
NO
YES
Correct the wiringbetween CR1 relayand terminal b on
drying timer.
Is there voltage acrossterminal 3 and 5 of
CR1 relay?
Is there voltageacross terminals 2A
& 1A of push tostart switch?
Replace CR1 relay.YES
NO
YES
NO
Replace push tostart switch.
Is there voltage acrossCOM and N.O. ofthe airflow switch?
NOTE: This test to bemade with push to start
switch pressed in.
YES Adjust the airflowswitch or replace if
inoperative.
NOTE: The N.O. contact is closed in the restposition due to the physical mounting
of the switch.
NO
Is the unit equippedwith a time delay
board?
NO
Is there voltage acrossH1-6 & H1-8 on
TMR1?
YES
Correct wiring toTMR1.
NO
YES
Is there voltage acrossDOB contacts on
TMR2?
Replace timedelay board.
YES
NOIs there voltage acrossterminals H1-4 &H1-8 on TMR2?
YES
NO
CONTINUEDON NEXT
PAGE.
Is there voltage acrossterminals 5 & 3 on
the CR2 relay?
Replace CR2relay.
YES
Is there voltage acrossterminals 7 & 8 of
CR2 relay?
NO
Correct wiringbetween CR2
relay and airflow switch.
NO
YES
Is there voltage acrosscoils B & A of the
motor control relay?
Correct wiringbetween motorcontrol relay
and airflowswitch.
NO
**
**
**
Check for properoperation of
airflow switch.
**
**
** Tested with the start switch pressed in.
YES
T042D
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Electronic Control Troubleshooting
35. Will Not Run – Gas – Manual Timer (continued)
T043D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact
9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
voltage acrossterminals 3 & 5 of
the fan motorcentrifugal switch with
the fan motor
Replace fan motor.
YES
YES
Is there voltage across terminal 7 & 4 of the motor control relay?
Replace motor control relay.
YES
NO
**
Is there voltage across terminals 1 & 4 of
fan motor?
NO
Correct wiring between fan
motor and contact 8 on the motor control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
** Tested with the start switch pressed in.
Is there voltage at terminal 5 on the
motor control relay to to supply neutral?
Correct wiring between terminal 5 and supply voltage.
NO
YES
Replace motor control relay.
Is there voltage across terminal 5 & 8 of the motor control relay?
YES
NO
YES
Is there voltage to terminal 6 on the
motor control relay and supply neutral?
Is there voltage across terminal 6 & 9 of the motor control relay?
Correct wiring between terminal
6 and power supply.
Replace motor control relay.
NO
NO
YES
YES
NO
Note: Only for non time delay machines
T043D
Is there
running?
70291301 65© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
36. Will Not Run – Gas – Rotary Coin Drop
T088D
Single and stack with and without time delay.
Is there voltage across terminals 2A & 1A
of push to start switch?
YES
NO
Replace push to start switch.
Is there voltage across COM and N.O. of
the airflow switch?
YES Adjust the airflow switch or replace if
inoperative.
NOTE: The N.O. contact is closed in the rest position due to the physical
mounting of the switch.
NO
Is the unit equipped with a time delay
board?
NO
Is there voltage across H1-6 & H1-8 on
TMR1?
YES
Correct wiring to TMR1.
NO
YES
Is there voltage across DOB contacts (H1-4and H1-5) on TMR2?
Replace time delay board.
YES
NOIs there voltage across terminals H1-4 & H1-8 on TMR2?
YES
NO
CONTINUED ON NEXT
PAGE.
Is there voltage across terminals 5 & 3 on
the CR2 relay?
Replace CR2 relay.
YES
Is there voltage across terminals 7 & 8 of
CR2 relay?
NO
Correct wiring between CR2
relay andairflow switch.
NO
YES
Is there voltage across coils B & A of the
motor control relay?
Correct wiring between motor control relay and airflow
switch.
NO
**
**
**
Check for proper operation of
airflow switch and check wiring.
**
Is there voltage across terminal 7 & 4 of the motor control relay?
Replace motor control relay.
YES
NO
**
**
** Tested with the start switch pressed in.
YES
Is there voltage at terminal 5 on the
motor control relay?
Correct wiring between terminal 5
and supply voltage.
NO
YES
**
** Tested with start switch pressed in.
**
Is there voltage to COM of the airflow
switch?
Correct wiring between COM of
airflow switch and 1A on start switch.
YES
NO
Note: Reference voltage to transformer
neutral.
T088D
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Electronic Control Troubleshooting
36. Will Not Run – Gas – Rotary Coin Drop (continued)
T089D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact 9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
Is there voltage across terminals 3 &
5 of the fan motor centrifugal switch with the fan
motor running?
Replace fan motor.
YES
YES
Is there voltage across terminals 1 & 4 of
fan motor?
NOCorrect wiring between fan
motor and contact 8 on the motor control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
** Tested with the start switch pressed in.
Replace motor control relay.
Is there voltage across terminal 5 & 8 of the motor control relay?
YES
NO
YES
Is there voltage to terminal 6 on the
motor control relay?
Is there voltage across terminal 6 & 9 of the motor control relay?
Correct wiring between terminal
6 and power supply.
Replace motor control relay.
NO
NO
YES
YES
NO
T089D
70291301 67© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
37. Will Not Run – Steam – Manual Timer
T017D
Single and stacked units with and withouttime delay board.
Is there voltage atterminal C on the
drying timer?
NOCorrect wiringbetween drying
timer and lint panelswitch.
YES
Is there voltage atterminal B on the
drying timer?
NO
YES
Is there voltage acrossterminals 7 and 8 of
CR1 relay?
Replace dryingtimer.
NOTE: Make sure dryingtimer is in the "on"
position.
NO
YES
Correct the wiringbetween CR1 relayand terminal B on
drying timer.
Is there voltage acrossterminal 3 and 5 of
CR1 relay?
Is there voltageacross terminals 2A
& 1A of push tostart switch?
Replace CR1 relay.YES
NO
YES
NO
Replace push tostart switch.
Is there voltage acrossCOM and N.O. of
the airflow switch?
NOTE: This test to bemade with push to start
switch pressed in.
YES Adjust the airflowswitch or replace if
inoperative.
NOTE: The N.O. contact is closed inthe rest position due to the physical
mounting of the switch.
NO
Is the unit equippedwith a time delay
board?
NO
Is there voltage acrossH1-6 & H1-8 on
TMR1?
YES
Correct wiring toTMR1.
NO
YES
Is there voltage acrossDOB contacts on
TMR2?
Replace timedelay board.
YES
NOIs there voltage acrossterminals H1-4 &H1-8 on TMR2?
YES
NO
Is there voltage acrossterminals 5 & 3 on
the CR2 relay?
Replace CR2relay..
YES
Is there voltage acrossterminals 7 & 8 of
CR2 relay?
NO
Correct wiringbetween CR2
relay and airflow switch.
NO
YES
Is there voltage acrossB & A of the motor
control relay?
Correct wiringbetween motor
control relayand airflow
switch.
NO
**
**
**
Check for properoperation of
airflow switch.
**
**
** Tested with the start switch pressed in.
YES
T017D
CONTINUEDON NEXT
PAGE.
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Electronic Control Troubleshooting
37. Will Not Run – Steam – Manual Timer (continued)
T018D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact
9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
voltage acrossterminals 3 & 5 of
the fan motorcentrifugal switch with
the fan motor
Replace fan motor.
YES
YES
Is there voltage across terminal 7 & 4 of the motor control relay?
Replace motor control relay.
YES
NO
**
Is there voltage across terminals 1 & 4 of
fan motor?
NOCorrect wiring between fan
motor and contact 8 on the motor
control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
** Tested with the start switch pressed in.
Is there voltage at terminal 5 on the
motor control relay to to supply neutral?
Correct wiring between terminal
5 and supplyvoltage.
NO
YES
Replace motor control relay.
Is there voltage across terminal 5 & 8 of the motor control relay?
YES
NO
YES
Is there voltage to terminal 6 on the
motor control relay and supply neutral?
Is there voltage across terminal 6 & 9 of the motor control relay?
Correct wiring between terminal
6 and power supply.
Replace motor control relay.
NO
NO
YES
YES
NO
Note: Only for non time delay machines
T018D
Is there
running?
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Electronic Control Troubleshooting
38. Will Not Run – Steam – Rotary Coin Drop
T064D
Single and stackwith and without time delay.
Is there voltage across terminals 2A & 1A of push to start
switch?
YES
NO
Replace push to start switch.
Is there voltage across COM and N.O. of
the airflow switch?
YES Adjust the airflow switch or replace if
inoperative.
NOTE: The N.O. contact is closed in the rest position due to the physical mounting
of the switch.
NO
Is the unit equipped with a time delay
board?
NO
Is there voltage across H1-6 & H1-8 on
TMR1?
YES
Correct wiring to TMR1.
NO
YES
Is there voltage across DOB contacts on
TMR2?
Replace time delay board.
YES
NOIs there voltage across terminals H1-4 & H1-8 on TMR2?
YES
NO
CONTINUED ON NEXT
PAGE.
Is there voltage across terminals 5 & 3 on
the CR2 relay?
Replace CR2 relay.
YES
Is there voltage across terminals 7 & 8 of
CR2 relay?
NO
Correct wiring between CR2
relay and airflow switch.
NO
YES
Is there voltage across B & A of the motor
control relay?
Correct wiring between motor control relay and airflow
switch.
NO
**
**
**
Check for proper operation of
airflow switch and check wiring.
**
Is there voltage across terminal 7 & 4 of the motor control relay?
Replace motor control relay.
YES
NO
**
**
** Tested with the start switch pressed in.
YES
Is there voltage at terminal 5 on the
motor control relay?
Correct wiring between terminal 5
and supply voltage.
NO
YES
**
** Tested with start switch pressed in and vend
satisfied.**
Is there voltage to COM of the airflow
switch?
Correct wiring between COM of
airflow switch and 1A on start switch.
YES
NO
Note: Reference voltage to transformer
neutral.
T064D
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Electronic Control Troubleshooting
38. Will Not Run – Steam – Rotary Coin Drop (continued)
T065D
Is there voltage at terminals 1 & 4 of
the cylinder motor?
Correct wiring between cylinder motor and contact
9 on the motor control relay.
NO
Does the cylinder motor run?
Replace the cylinder motor.
NO
The cylinder and fan motors are
operational.
YES
voltage acrossterminals 3 & 5 of
the fan motorcentrifugal switch with
the fan motor
Replace fan motor.
YES
YES
Is there voltage across terminals 1 & 4 of
fan motor?
NOCorrect wiring between fan
motor and contact 8 on the motor control relay.
Does the fan motor run?
Replace the fan motor.
NO
YES
** Tested with the start switch pressed in.
Replace motor control relay.
Is there voltage across terminal 5 & 8 of the motor control relay?
YES
NO
YES
Is there voltage to terminal 6 on the
motor control relay?
Is there voltage across terminal 6 & 9 of the motor control relay?
Correct wiring between terminal
6 and power supply.
Replace motor control relay.
NO
NO
YES
YES
NO
Only for units without time delay boards.
T065D
Is there
running?
70291301 71© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
39. Will Not Heat – Electric – Manual Timer
T054D
NOTE: The following tests are conducted with the heat timer in the "ON" position with the
machine running and calling for heat. Voltage checks are referenced to transformer neutral.
Is there voltage across terminals 1 & 6 of
the temp control bd?
Is there voltage across terminals 5 & 6 of
the temp control bd?
YES
NO
voltage atairflow switch
N.C. terminal totransformer
NO Replace inoperative switch or correct
airflow vane operation.
NO
YES
Is there voltage at terminal 6 on CR1 to transformer neutral?
NO Correct wiring between airflow switch and terminal 6 on CR1.
Is there voltage from terminal 4 on CR1 to transformer neutral?
Replace CR1.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal
4 on CR1.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between CR2 terminal 4 & terminal 1 on temp control
board.
Is the thermistor shorted or open?
NO
YESReplace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Is unit equipped with time delay board?
NO
YES
Is there voltage to
terminal 3 of fan motor?
NO
YES
Correct wiring between fan motor
terminal 3 and CR1 terminal 4.
Is there voltage at terminal 3 & 5
of fan motor?Replace fan motor.
YES
NO
Correct wiring between motor terminal 5 and temp control
board terminal 1.
With and without time delay board. Single and stacked units. Single and
three phase power supply.
Is temperature selection switch shorted or open?
Replace selection switch.
YES
NO
T054D
Is there
neutral?
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Electronic Control Troubleshooting
39. Will Not Heat – Electric – Manual Timer (continued)
T055D
Is there voltage to the input side of the cabinet limit?
Correct wiring between cabinet limit and temp control board.
YES
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across HC1 & HC2
element contactor coils?
YES
NOCorrect wiring
between element contactor coils and
stove limit.
Is there voltage across the elements?
YES
UNIT OPERATIONAL
NO
Check wiring between elements,
contactors and supply. Correct if
necessary.
Note: Voltage checks are referenced to transformer neutral.
Do the elements produce heat?
NO
YES
Replace elements.
T055D
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Electronic Control Troubleshooting
40. Will Not Heat – Electric
T034D
Single and stacked units with single and three phase supply.Note: Tests are conducted with unit running
and calling for heat.
All voltage checks are referenced to transformer neutral.
Correct wiring between FS-2 and COM of lint drawer.
Is there voltage on FS-2 of EDC control?
Is there voltage on FS-1 of
EDC control?
Correct wiring between COM of
airflow switch and FS-1 of EDC
control.
Is there voltage on COM of airflow
switch?
Check for proper function of airflow switch and replace
if necessary.
Is there voltage at N.C. terminal of airflow switch?
Correct wiring between terminal 7
on motor control relay and N.C.
terminal on airflow switch.
Is there voltage on terminal 7 of motor
control relay?
Replace motor control relay.
Is there voltage at terminal 4 of motor
control relay?
Correct wiring between terminal
3 of fan motor centrifugal switch and terminal 4 of
motor control relay.
Is there voltage on terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage at terminal 5 of fan motor centrifugal
switch?
Correct wiring between cabinet limit and terminal
5 of fan motor centrifugal switch.
Is there voltage to the input side of the
cabinet limit?
Replace cabinet limit.
Is there voltage at the output of the cabinet
limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Is the thermistor
operational?
Replace EDC control.Replace
thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Continued on next page.
T034D
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Electronic Control Troubleshooting
40. Will Not Heat – Electric (continued)
T035D
Replace the stove limit.
Is there voltage to the output side of the stove
limit?
Correct wiring to the coils of HC1
and HC2.
Is there voltage across coils HC1 & HC2?
Correct wiring between elements
and supply. Replace HC1 and or HC2
if necessary
Is there voltage across the heating elements?
Replace elements.Do the elements produce heat?
Unit operational.
NO
YES
NO
YES
NO
YES
NO
YES
T035D
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Electronic Control Troubleshooting
41. Will Not Heat – Electric – Rotary Coin Drop (With and Without Time Delay Board)
T077D
there voltage acrossacross terminals 1 &
6 of the tempcontrol board?
YES
NO
Is there voltage at airflow switch N.C.
terminal to transformer neutral?
NO Adjust the airflow switch or replace if
inoperative.
NO
YES
Is there voltage at COM on switch B to transformer neutral?
NOCorrect wiring
between airflow switch and COM on
switch B.
Is there voltage from N.C. on switch B to transformer neutral?
Replace switch B.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal N.C. on switch B.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between terminal
4 on CR2 & terminal 1 on temp control
board.
Is the thermistor shorted or open?
NO
YESReplace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Single and stacked tumblers with and without time delay.
Single and three phase units.
Is the unit equipped with a time delay
board?
NO
YES
Is there voltage on terminal 3 of fan motor to transformer
neutral?
With fan motor running is there voltage
from terminal 5 to transformer neutral?
Correct wiring between terminal
3 of fan motor and N.C. terminal
on switch B.
NO
YES
Replace fan motor.
Is there voltage on terminal 1 of temp
board to transformer neutral?
NO
YES
NO
YES
Correct wiring between terminal 1 of temp board
to terminal 5 of fan motor.
Power supply to temp control board
is good.
Replace selection switch.
Is temperature selection switch shorted or open?
YES
NO
T077D
Is
there voltage acrossacross terminals 5 &
6 of the tempcontrol board?
Is
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Electronic Control Troubleshooting
41. Will Not Heat – Electric – Rotary Coin Drop (With and Without Time Delay Board) (continued)
T078D
Is there voltage to the input side of the
cabinet limit?
Correct wiring between cabinet limit and temp control board.
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit
and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across the coils of HC1 &
HC2?
YES
NO Correct the wiring to the coils.
Is there voltage across the elements?
YES
UNIT OPERATIONAL
NO
Check the wiring between elements,
contactors and supply. Correct if
necessary.
Note: Voltage checks are referenced to transformer neutral.
Do the elements produce heat?
NO
YES
Replace elements.
YES
T078D
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Electronic Control Troubleshooting
42. Will Not Heat – Electric/Gas – OPL Microprocessor
T010D
Is power supplied to unit?
Is there voltage to output of primary
fuse(s)?
there voltage acrossterminals 1 & 2 on
primary oftransformer?
Is there voltage across terminals 2 & 3 of
transformer secondary?
Is there voltage to input of secondary fuse?
Is there voltage to output of secondary
fuse?
Is there voltage to N.O. terminal of door
switch?
With door closed is there voltage to COM
of door switch?
Is there voltage to N.O. of lint panel
switch?
Change primary fuse.
Correct wiring between transformer
and primary fuse.
Replace transformer.
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between N.O.
terminal of door switch and
secondary fuse.
Check for proper operation, replace
door switch if necessary.
Correct wiring between N.O. of lint panel switch
and COM of door switch.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Continued on next page Column 1.
Note: Reference voltage to transformer secondary neutral
terminal 3.
Connect supply and run unit.
Is there voltage to input of primary fuse(s)?
Correct wiring between primary fuse and supply.
Is the thermister operating properly?
Is there voltage at terminal 5 on OPL
Micro?
Continued on next page column 2.
Replace thermister.
Single and three phase supply.
YES
NO
NO
YES
Reference voltage to transformer neutral
terminal 3.
Test conducted with unit running and calling for heat.
Reference voltage to supply neutral.
Note: Testing conducted with unit running and calling for heat.
T010D
Is
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Electronic Control Troubleshooting
42. Will Not Heat – Electric/Gas – OPL Microprocessor (continued)
T011D
Is there voltage to COM of lint panel
switch with lint panel closed?
Is there voltage at terminal 8 of OPL
Micro?
Check for proper operation and
replace lint panel switch if necessary.
Correct wiring between terminal 8 of OPL Micro
and COM of lint panel switch.
YES
YES
NO
NO
Replace OPL Micro.
Correct wiring between terminal
6 & 13 on OPL Micro.
Is there voltage to terminal 13 of OPL
Micro?
Is there voltage at terminal 6 of OPL
Micro?
Replace OPL Micro.
NO
NO
YES
YES
Column 1
Correct wiring between COM &
OPL Micro.
Is there voltage at COM of airflow
switch?
Check for proper operation and
replace ifnecessary.
Is there voltage at N.C. terminal ofairflow switch?
Correct wiring between terminal
7/8 of motor control relay and N.C. of airflow
switch.
Replace motor control relay.
there voltage atterminal 4 of motorcontrol relay for OMmodels or terminal 6
for RM
Correct wiring between fan motor centrifugal switch and motor control
relay.
Is there voltage at terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage at terminal 5 of fan motor centrifugal
switch?
Column 2
Continued on next page.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
The following tests are conducted with the unit running
and calling for heat.
Is the unit supplied with single phase or three
phase power?
single phase
Is there voltage to terminal 14 on motor
control relay?
Is there voltage across terminals 14 & 13 of motor control relay?
Correct wiring between terminal
14 on motor control relay and N.C. terminal of airflow switch.
Replace motor control relay.
Three phase
NO
YES
NO
YES
T011D
Is
models?
there voltage atterminal 7 of motorcontrol relay for OMmodels or terminal 8
for RM
Is
models?
70291301 79© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
42. Will Not Heat – Electric/Gas – OPL Microprocessor (continued)
T012D
Correct wiring between cabinet
limit and terminal 5 of fan motor
centrifugal switch.
Is there voltage to the input of the cabinet
limit?
Replace cabinet limit.
Is there voltage to output of cabinet limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to input of stove limit?
Replace stove limit.Is there voltage to the
output side of the stove limit?
Correct wiring between ICM board
and stove limit.
Is there voltage to terminal 2 of ICM
board?
Replace ICM board.Is there voltage to terminal 1 of ICM
board?
Correct wiring to gas valve coils.
Is there voltage across the coils of the gas
valve?
Replace the coils or complete gas valve.
Is there gas flow through the valve?
Unit is operational.Is there a flame?
Continued from column 2 of previous page.
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
YES
NO
NO
YES
YES
Check gas pressures and
adjust if necessary.Does the ignitor spark?
Replace igniter or ignition cable.
YES
NO
Is the unit equipped with gas heat or
electric heat?
GAS
Is there voltage across HC1 & HC2 coils?
Do the elements produce heat?
Correct the wiring to the HC1 and/or
HC2 coils.
Correct wiring between supply,
contacts and elements. Replace contactors and/or
elements if necessary.
UNIT OPERATIONAL.
ELECTRIC
NO
YES
NO
YES
T012D
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Electronic Control Troubleshooting
43. Will Not Heat – Gas – EDC Models
T032D
Note: Tests are conducted with unit running and calling for heat.
All voltage checks are referenced to transformer neutral.
Correct wiring between FS-2 and
COM of lint drawer.
Is there voltage on FS-2 of EDC control?
Is there voltage on FS-1 of
EDC control?
Correct wiring between COM of
airflow switch and FS-1 of EDC
control.
Is there voltage on COM of airflow
switch?
Check for proper function of airflow switch and replace
if necessary.
Is there voltage across COM & N.C. terminal
of airflow switch?
Correct wiring between terminal
7 on motor control relay and N.C. terminal on airflow switch.
Is there voltage on terminal 7 of motor
control relay?
Replace motor control relay.
Is there voltage across terminals 7 & 4 of
motor control relay?
Correct wiring between terminal
3 of fan motor centrifugal switch and terminal 4 of
motor control relay.
Is there voltage on terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage across
terminals 3 & 5 of fan motor centrifugal
switch?
Correct wiring between cabinet
limit and terminal 5 of fan motor
centrifugal switch.
Is there voltage to the input side of the
cabinet limit?
Replace cabinet limit.
Is there voltage across cabinet limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Is the thermistor
operational?
Replace EDC control.
Replace thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Continued on next page.
Single and stacked units.
T032D
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Electronic Control Troubleshooting
43. Will Not Heat – Gas – EDC Models (continued)
T033D
Replace the stove limit.
Is there voltage to the output side of the stove
limit?
Correct wiring between terminal
2 of ICM board and stove limit.
Is there voltage to terminal 2 of the ICM
board?
Replace ICM board.Is there voltage at terminal 1 of ICM
board?
Correct wiring between gas valve
and ICM board.
Is there voltage across the coils of the gas
valve?
Replace gas valve coils or complete
gas valve.
Is there gas flow through the gas valve?
Replace high voltage ignition cable or igniter.
Does the igniter spark?
Unit operational.Is there a flame?NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
T033D
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Electronic Control Troubleshooting
44. Will Not Heat – Gas – Manual Timer
T044D
NOTE: The following tests are conducted with the Heat Timer in the "ON" position with the
machine running and calling for heat. Voltage checks are referenced to transformer neutral.
Is there voltage across terminals 1 & 6 of
the temp control bd?
Is there voltage across terminals 5 & 6 of
the temp control bd?
YES
NO
there voltage atairlow switch
N.C. terminal totransformer
NO Replace inoperative switch or correct
airflow vane operation.
NO
YES
Is there voltage at terminal 6 on CR1 to transformer neutral?
NO Correct wiring between airlow switch and terminal 6 on CR1.
Is there voltage from terminal 4 on CR1 to transformer neutral?
Replace CR1.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal
4 on CR1.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between CR2 terminal 4 & terminal 1 on temp control
board.
Is the thermistor shorted or open?
NO
YES Replace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Single and stacked units with and without time delay boards.
Is unit equipped with time delay board?
NO
YES
Is there voltage to
terminal 3 of fan motor?
NO
YES
Correct wiring between fan motor terminal 3 and CR1
terminal 4.
there voltageacross terminal
3 & 5 of fanmotor?
Replace fan motor.YES
NO
Correct wiring between motor terminal 5 and
temp control board terminal 1.
Replace selection switch.
Is the temperature selection switch shorted or open?
YES
NO
T044D
Is
neutral?
Is
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Electronic Control Troubleshooting
44. Will Not Heat – Gas – Manual Timer (continued)
TMB1834S
Is there voltage to the input side of the
cabinet limit?
Correct wiring between cabinet limit and temp control board.
YES
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across terminals 2 & 3 of
ICM board?
YES
NO Correct wiring between ICM board
and stove limit.
Is there voltage across terminals 1 & 3 of
the ICM board?
YES
UNIT OPERATIONAL
NOReplace ICM board
Note: Voltage checks are referenced to transformer neutral.
Is there voltage across the coils of the gas
valve?
NO
YES
Correct wiring between gas valve
and ICM board.
Is there gas flow through the gas valve?
Does the igniter spark?
Is there a flame?
Replace gas valve or gas valve coils.
Replace high voltage cable or
igniter.
NO
YES
NO
YES
NO
YES
TMB1834S
84 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
45. Will Not Heat – Gas – Rotary Coin Drop
T090D
Is there voltage across terminals 1 & 6 of
the temp control bd?
Is there voltage across terminals 5 & 6 of
the temp control bd?
YES
NO
Is there voltage at airflow switch N.C.
terminal to transformer neutral?
NO Replace inoperative switch or correct
airflow vane operation.
NO
YES
Is there voltage at COM on switch B to transformer neutral?
NOCorrect wiring
between airflow switch and COM on
switch B.
Is there voltage from N.C. on switch B to transformer neutral?
Replace switch B.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal N.C. on switch B.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between terminal
4 on CR2 & terminal 1 on temp control
board.
Is the thermistor shorted or open?
NO
YESReplace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Single and stacked tumblers with
and without time delay.
Is the unit equipped with a time delay
board?
NO
YES
Is there voltage on terminal 3 of fan motor
to transformerneutral?
With fan motor running is there voltage
from terminal 5 to transformer
neutral?
Correct wiring between terminal 3 of fan motor
and N.C. terminal on switch B.
NO
YES
Replace fan motor.
Is there voltage on terminal 1 of temp
board to transformer neutral?
NO
YES
NO
YES
Correct wiring between terminal 1 of temp board
to terminal 5 of fan motor.
Power supply to temp control board is good.
Is temperature selection switch shorted or open?
Replace selection switch.
YES
NO
T090D
70291301 85© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
45. Will Not Heat – Gas – Rotary Coin Drop (continued)
T091D
Is there voltage to the input side of the cabinet limit?
Correct wiring between cabinet limit and temp control board.
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit
and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across terminals 2 & 3 of the ICM board?
YES
NOCorrect wiring between ICM
board and stove limit or neutral.
Is there voltage across terminals 1 & 3 of the ICM board?
Does the igniter spark?
YES
YES
Is there a flame?
UNIT OPERATIONAL
NO Replace the ICM board.
Replace high voltage ignition cable or igniter.
NO
YES
Note: Voltage checks are referenced to transformer neutral.
Is there voltage across the coils of the gas
valve?
NO
YES
Correct wiring between gas valve
and ICM board.
Is there gas flow through the gas valve?
NO
YES
Replace gas valve coils or complete
gas valve.
NO
YES
T091D
86 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
46. Will Not Heat – Steam – EDC Models
T096D
NO
YES
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Note: Tests are conducted with unit running and calling for heat.
All voltage checks are referenced to transformer neutral.
Correct wiring between FS-2 and
COM of lint drawer.
Is there voltage on FS-2 of EDC control?
Is there voltage on FS-1 of
EDC control?
Correct wiring between COM of
airflow switch and FS-1 of EDC
control.
Is there voltage on COM of airflow
switch?
Check for proper function of airflow
switch and replace if necessary.
Is there voltage across COM & N.C. terminal
of airflow switch?
Correct wiring between terminal 7
on motor control relay and N.C.
terminal on airflow switch.
Is there voltage on terminal 7 of motor
control relay?
Replace motor control relay.
Is there voltage across terminals 7 & 4 of motor control relay?
Correct wiring between terminal 3
of fan motor centrifugal switch and terminal 4 of
motor control relay.
Is there voltage on terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage across
terminals 3 & 5 of fan motor centrifugal
switch?
Correct wiring between cabinet
limit and terminal 5 of fan motor
centrifugal switch.
Is there voltage to the input side of the
cabinet limit?
Replace cabinet limit.
Is there voltage across cabinet limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to the input side of the stove
limit?
Is the thermistor
operational?
Replace EDC control.Replace
thermistor.
Continued on next page.
Single and stacked units.
T096D
70291301 87© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
46. Will Not Heat – Steam – EDC Models (continued)
T097D
Replace the stove limit.
Is there voltage to the output side of the stove
limit?
Correct wiring to steam valve coil.
Is there voltage across steam valve coil?
Repair or replace steam valve.
Does steam valve operate properly?
Check for proper steam supply.
Correct if necessary.Is heat produced?
NO
YES
NO
YES
NO
YES
NO
YES
Unit operational.
T097D
88 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
47. Will Not Heat – Steam – Manual Timer
T019D
NOTE: The following tests are conducted with the Heat Timer in the "ON" position with the
machine running and calling for heat. Voltage checks are referenced to transformer neutral.
Is there voltage across terminals 1 & 6 of
the temp control bd?
Is there voltage across terminals 5 & 6 of
the temp control bd?
YES
NO
Is there voltage atairflow switch N.C.
terminal to transformer neutral?
NO Adjust the airflow switch or replace if
inoperative.
NO
YES
Is there voltage at terminal 6 on CR1 to transformer neutral?
NOCorrect wiring
between airflow switch and
terminal 6 on CR1.
Is there voltage from terminal 4 on CR1 to transformer neutral?
Replace CR1.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal
4 on CR1.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between CR2 terminal 4 & terminal 1 on temp control
board.
Is the thermistor shorted or open?
NO
YESReplace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Single and stacked units with and without time delay boards, manual timers.
Is unit equipped with time delay board?
NO
YES
Is there voltage to
terminal 3 of fan motor?
NO
YES
Correct wiring between fan motor
terminal 3 and CR1 terminal 4.
Is there voltage across terminal
3 & 5 of fan motor?
Replace fan motor.YES
NO
Correct wiring between motor terminal 5 and temp control
board terminal 1.
Replace selection switch.
Is temperature selection switch shorted or open?
YES
NO
T019D
70291301 89© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
47. Will Not Heat – Steam – Manual Timer (continued)
T020D
Is there voltage to the input side of the cabinet limit?
Correct wiring between cabinet limit and temp control board.
YES
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across the coil of the steam
valve?
YES
NO Correct wiring to the steam valve.
Do the steam valves operate properly?
YES
UNIT OPERATIONAL
NO Replace steam valve.
Note: Voltage checks are referenced to transformer neutral.
Is heat produced?NO
YES
Check for proper steam supply.
Correct if necessary.
T020D
90 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
48. Will Not Heat – Steam – OPL Microprocessor
T003D
Change primary fuse.
Correct wiring between transformer
and primary fuse.
Replace transformer.
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between N.O. terminal of door
switch and secondary fuse.
Check for proper operation, replace
door switch if necessary.
Correct wiring between N.O. of lint panel switch and COM of door
switch.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Continued on next page column 1.
Note: Reference voltage to transformer secondary neutral
terminal 3.
Connect supply and run unit.
Correct wiring between primary fuse and supply.
Continued on next page column 2.
Replace thermister.
YES
NO
NO
YES
Reference voltage to transformer neutral
terminal 3.
Testing conducted with unit running and calling for heat.
Reference voltage to supply neutral.
Is power supplied to unit?
Is there voltage to output of primary
fuse(s)?
there voltage acrossterminals 1 & 2 on
primary oftransformer?
Is there voltage across terminals 2 & 3 of
transformer secondary?
Is there voltage to input of secondary fuse?
Is there voltage to output of secondary
fuse?
Is there voltage to N.O terminal of door
switch?
With door closed is there voltage to COM
of door switch?
Is there voltage to N.O. of lint panel
switch?
Is there voltage to input of primary fuse(s)?
Is the thermister operating properly?
Is there votlage at terminal 5 on OPL
Micro?
T003D
Is
70291301 91© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
48. Will Not Heat – Steam – OPL Microprocessor (continued)
T004D
Is there voltage to COM of lint panel
switch with lint panel closed?
Is there voltage at terminal 8 of OPL
Micro?
Check for proper operation and
replace lint panel switch if necessary.
Correct wiring between terminal
8 of OPL Micro and COM of lint
panel switch.
YES
YES
NO
NO
Replace OPL Micro.
Correct wiring between terminal 6 & 13 on OPL
Micro.
Is there voltage to terminal 13 of OPL
Micro?
Is there voltage at terminal 6 of OPL
Micro?
Replace OPL Micro.
NO
NO
YES
YES
Column 1
Correct wiring between COM &
OPL Micro.
Is there voltage at COM of airflow
switch?
Check for proper operation and
replace if necessary.
Is there voltage at N.C. terminal ofairflow switch?
Correct wiring between terminal
7 of motor control relay and N.C. of
airflow switch.
Is there voltage at terminal 7 of motor
control relay ?
Replace motor control relay.
Is there voltage at terminal 4 of motor
control relay?
Correct wiring between fan motor centrifugal switch and motor control
relay.
Is there voltage at terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage at terminal 5 of fan motor centrifugal
switch?
Column 2
Continued on next page.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
The following tests are conducted with the unit running
and calling for heat.
Is the unit supplied with single phase or three
phase power?
Single phase
Is there voltage to terminal 14 on motor
control relay?
Is there votlage to terminal 13 of motor
control relay?
Correct wiring between terminal 14
on motor control relay and N.C.
terminal of airflow switch.
Replace motor control relay.
Three phase
NO
YES
NO
YES
T004D
92 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
48. Will Not Heat – Steam – OPL Microprocessor (continued)
TMB1835S
Correct wiring between cabinet
limit and terminal 5 of fan motor
centrifugal switch.
Is there voltage to the input of the cabinet
limit?
Replace cabinet limit.
Is there voltage to output of cabinet limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to input of stove limit?
Replace stove limit.Is there voltage to the
output side of the stove limit?
Replace or rebuildsteam valve.
Does the steam valve operate properly?
Check for proper steam supply.
Correct if necessary.Is heat produced?
Continued from column 2 of previous page.
NO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Correct wiring to steam valve coil.
NOIs there voltage across steam valve coil?
YES
UNIT OPERATIONAL.
TMB1835S
70291301 93© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
49. Will Not Heat – Steam – Rotary Coin Drop
T066D
Is there voltage across terminals 1 & 6 of the temp control
Is there voltage across terminals 5 & 6 of the temp control
board?
board?
YES
NO
Is there voltage at airflow switch N.C.
terminal to transformer neutral?
NO Adjust the airflow switch or replace if
inoperative.
NO
YES
Is there voltage at COM on switch B to transformer neutral?
NO Correct wiring betweenairflow switch and COM on switch B.
Is there voltage from N.C. on switch B to transformer neutral?
Replace switch B.
YES
NO
YES
Is there voltage from terminal 6 on CR2 to transformer neutral?
Correct wiring between terminal 6 on CR2 to terminal N.C. on switch B.
NO
YES
Is there voltage from terminal 4 on CR2 to transformer neutral?
Replace CR2.NO
YES
Correct wiring between terminal
4 on CR2 & terminal 1 ontemp control
board.
Is the thermistor shorted or open?
NO
YESReplace thermistor.
Replace the temperature control board.
YES
CONTINUED ON NEXT
PAGE
Single and stacked tumblers with
and without time delay.
Is the unit equipped with a time delay
board?
NO
YES
Is there voltage on terminal 3 of fan motor to
transformer neutral?
With fan motor running is there voltage
from terminal 5 to transformer
neutral?
Correct wiring between terminal
3 of fan motor and N.C. terminal
on switch B.
NO
YES
Replace fan motor.
Is there voltage on terminal 1 of temp
board to transformer neutral?
NO
YES
NO
YES
Correct wiring between terminal 1 of temp board to terminal 5 of
fan motor.
Power supply to temp control board is good.
Is temperature selection switch shorted or open?
Replace selection switch.
YES
NO
T066D
94 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
49. Will Not Heat – Steam – Rotary Coin Drop (continued)
TMB1836S
Is there voltage to the input side of the
cabinet limit?
Correct wiring between cabinet limit and temp control board.
NO
Is there voltage to the output side of the
cabinet limit?
YES
NO Replace the cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Correct wiring between stove limit and cabinet limit.
Is there voltage to the output side of the stove
limit?
NO
YES
Replace the stove limit.
Is there voltage across coil of steam valve?
YES
NO Correct wiring to steam valve
Does the steam valve operate properly?
YES
UNIT OPERATIONAL
NO Replace or rebuild steam valve.
Note: Voltage checks are referenced to transformer neutral.
Is heat produced?NO
YES
Check for proper steam supply.
Correct if necessary.
YES
TMB1836S
70291301 95© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 6Micro Display Control Troubleshooting
50. Coins Ignored When Entered
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumble dryer before servicing.• Close gas shut-off valve to gas tumble dryer before servicing.• Close steam valve to steam tumble dryer before servicing.• Never start the tumble dryer with any guards/panels removed.• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumble dryer is properly grounded.W002R1
WARNING
Does the display on the
electronic control
increment properly?
Is connector H2 on the
control firmly seated in
its receptacle?
Are wires exiting coin
drop optical sensor
cracked or broken?
Exit diagnostic
testing and reset
control. (Prompting for vend price)
Reconnect and run
diagnostic test
again.
Reconnect and run
diagnostic test
again.
Replace coin drop
or optic switch.
Replace coin drop.
If problem still exists
then replace the
electronic control.
Start coin drop
diagnostic tests.
YES
NO
YES
YES
NO
YES
NO
NO
Single and stacked
units. Gas and electric
heat. Single and three
phase power supply.
TMB1837S
Is the 3 pin connector
between coin drop and
control connected
correctly?
TMB1837S
96 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
51. Control Has No Display
Is there 24 VAC across H1-1 & H1-3 on
the control?
Replace Electronic Control.
Is there power supplied to the unit?
NO
Is there 120 VAC at input of primary fuses?
Is there 120 VAC at output side of the primary fuses?
Is there 120 VAC across terminals 1 & 2 of
transformer primary?
Plug unit in and start cycle.
Correct wiring between primary fuse and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuse and transformer.
Is there 24 VAC across terminals 1 &
4 of transformer secondary?
Replace transformer.
Is there 24 VAC at the input of the
secondary fuse?
Is there 24 VAC at output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between control and
secondary fuse.
YES
NONO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
(8)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Gas, steam and electric heat.Single and three phase power supply.
TMB249S
70291301 97© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Control Has No Display
TM
B17
67S
PR
IMA
RY
FU
SE
AG
C-2
A
250V
SE
CO
ND
AR
YF
US
EM
DL-3
.5A
250V
N
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
LIN
TP
AN
EL
SW
ITC
H
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
AIR
FL
OW
SW
ITC
H
BLK
L1
RED
LT. BLU
SE
RV
ICE
CO
NN
EC
TIO
N
TB
1
BLK RED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
OR
G/B
RN
CO
M
N.O
.
N.C
.
12
12
BLK
TH
ER
MIS
TO
R
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1.2
5 T
250V
RED RED
WH
T
34
GR
N/Y
EL
WH
T
89
10
H4
025 &
030 M
OD
ELS
L2
24
V
3.5
A
12
0V
24
V
1.5
A
24Vac Ret
H3
-1 &
H3
-2Iin
= 3
-30
ma
TIM
E 2
0m
sec
MIN
.
ST
AR
T P
ULS
E IN
PU
T
MA
CH
INE
RU
NN
ING
AV
AIL
AB
LE
OU
TP
UT
SE
E V
EN
DA
PP
LIC
AT
ION
DE
TA
IL
H2-2
H2
-1
FS
-2
H1-2
51
23
86
411
10
97
12
CO
IN D
RO
PS
H5
24Vac
H1-4
12
34
56
7H
624Vac Ret
Ima
x=5
ma
H3
-3 &
H3
-4
Vm
ax=
28
Vd
c
OP
TO
OF
F W
HE
N
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
H2-5
DO
OR
SE
NS
ING
CIR
CU
IT A
LL
OW
S
VO
LT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
TJU
MP
ER
H2
-2 T
O H
2-5
AS
FO
LL
OW
S:
240V
ac
- 13.6
K o
hm
10 w
att
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
RE
LA
Y O
NL
Y W
HE
N D
OO
R I
SC
LO
SE
D &
SW
ITC
H I
S P
RE
SS
ED
24
Va
c -
WIR
E J
UM
PE
R1
20
Va
c -
6.8
K o
hm
5 w
att
MD
C C
ON
TR
OL
CO
NT
RO
LP
OW
ER
SU
PP
LY
24VAC
H1-1
H1-3
H11L1
46
53
21
H3
100 O
HM
1/4
wa
tt
4N25
H2-4
H2-3
FS
-11
H2
-6
Door
Sense
Ret
CIR
CU
IT C
ON
TR
OL
SH
EA
T R
EL
AY
TE
MP
. R
EG
UL
AT
ING
10
H4
89
74
56
23
1
2
3
4
5
6
7
TM
B17
67
S
98 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
52. Door Open Indicator
Is there voltage at H2-1 on the Electronic
control?Replace Control.
Is there power supplied to the unit?
NO
Is there 120 VAC at input of primary fuses?
Is there 120 VAC at output side of the primary fuses?
Is there 120 VAC across terminals 1 & 2 of
transformer primary?
Plug unit in and start cycle.
Correct wiring between primary fuses and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuses and transformer.
Replace transformer.
Is there 24 VAC at the input of the
secondary fuse?
Is there 24 VAC at output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
NO
NO
NO
NO
NO
NOYES
YES
YES
YES
YES
YES
YES
Is there 24 VAC at N.O. of door
switch?
Is there 24 VAC at N.O. of lint drawer
switch?
Check for proper operation replace if
necessary.
Correct wiring between N.O. on lint drawer and COM on
door switch.
Correct wiring between N.O. and
output of secondary fuse.
Check for proper function of door switch replace if
necessary.
Correct wiring between H2-1 of electronic control and COM of lint drawer switch.
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Reference voltage checks to transformer
neutral.(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
TMB250S
Is there 24 VAC across terminals 2 & 3 of
transformer secondary?
Is there 24 VAC at COM of lint drawer
switch with lint panel closed?
With door closed is there 24 VAC to
COM of door switch?
Gas, steam and electric heat.Single and three phase power supply.
TMB205S
70291301 99© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Door Open Indicator
TM
B17
68S
PR
IMA
RY
FU
SE
AG
C-2
A
25
0V
SE
CO
ND
AR
YF
US
EM
DL
-3.5
A2
50
V
N
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
LIN
TP
AN
EL
SW
ITC
H
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
AIR
FL
OW
SW
ITC
H
BLK
L1
RED
LT. BLU
SE
RV
ICE
CO
NN
EC
TIO
N
TB
1
BLK RED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
OR
G/B
RN
CO
M
N.O
.
N.C
.
12
12
BL
K
TH
ER
MIS
TO
R
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1
.25
T2
50
V
RED RED
WH
T
34
GR
N/Y
EL
WH
T
89
10
H4
02
5 &
03
0 M
OD
EL
S
L2
24V
3.5
A
120V
24V
1.5
A
24Vac Ret
H3-1
& H
3-2
Iin=
3-3
0m
aT
IME
20m
sec
MIN
.
ST
AR
T P
UL
SE
IN
PU
T
MA
CH
INE
RU
NN
ING
AV
AIL
AB
LE
OU
TP
UT
SE
E V
EN
DA
PP
LIC
AT
ION
DE
TA
IL
H2-2
H2-1
FS
-2
H1-2
51
23
86
411
10
97
12
CO
IN D
RO
PS
H5
24Vac
H1-4
12
34
56
7H
6
24Vac Ret
Imax=
5m
a
H3-3
& H
3-4
Vm
ax=
28V
dc
OP
TO
OF
F W
HE
N
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
H2-5
DO
OR
SE
NS
ING
CIR
CU
IT A
LLO
WS
VO
LT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
TJU
MP
ER
H2
-2 T
O H
2-5
AS
FO
LL
OW
S:
24
0V
ac
- 1
3.6
K o
hm
10
wa
tt
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
RE
LA
Y O
NLY
WH
EN
DO
OR
IS
CLO
SE
D &
SW
ITC
H IS
PR
ES
SE
D
24V
ac
- W
IRE
JU
MP
ER
120V
ac
- 6.8
K o
hm
5 w
att
MD
C C
ON
TR
OL
CO
NT
RO
LP
OW
ER
SU
PP
LY
24VAC
H1-1
H1-3
H11L1
46
53
21
H3
10
0 O
HM
1/4
wa
tt
4N25
H2-4
H2-3
FS
-11
H2-6
Door
Sense
Ret
CIR
CU
IT C
ON
TR
OLS
HE
AT
RE
LA
Y
TE
MP
. R
EG
UL
AT
ING
10
H4
89
74
56
23
1
2
34
5
6
7
89
1011
TM
B17
68
S
100 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
53. Motor Will Not Start/Run
Is there voltage across
H2-1 and H2-6 on
the electronic control ?
YES
Replace MDC
Control.
Is there voltage
across H2-4 and H2-6
on the electronic control?
Is there voltage at
terminal 5 of the
motor control relay?
Is there voltage at
terminal 8 of motor
control relay?
Is there voltage across
terminals 1 & 4 of
the fan motor?
Does the fan motor
run?
Is there voltage at
terminal 6 of motor
control relay?
Is there voltage at
terminal 9 of motor
control relay?
Replace
control.
Correct wiring
between terminal 5
and power supply.
Replace motor
control relay.
Correct wiring
between fan motor
and motor control
relay.
Replace fan motor.
Correct wiring
between terminal 6
of motor control
relay and supply.
Replace motor
control relay.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
NO
Note: test conducted with vend
price satisfied and start button
pressed.
Correct wiring
between L1, L2 and
power supply.
Replace motor
control relay.
Is the unit equipped
with single phase or
three phase power?
Is there supply voltage
to L1 and L2 of the
motor control relay?
Is there votlage across
L1 & T1 and L2 & T2?
Single phase
NO
YES
YES
NO
3 phase. Also
see Note on
next page
Is unit equipped with
single phase or three
phase power supply?
Is there supply voltage
between L2 & L3 of
motor control relay?
Three phase. Also
see Note on next
page.
NO
YES
Is there voltage across
terminals L2 & T2 and
L3 & T3?
Correct wiring
between L2, L3 and
supply.
Replace motor
control relay.
YES
NO
Single phase
Single and stacked
units. Gas, electric and
steam heat. Single and
three phase supply.
NO Refer to
Door open
flow chart.
(1)
Is there voltage
across the coil of
the motor control
relay?
Correct wiring to coil
of motor relay .
(2)
YES
NO
(3)
(4)
(5)
(6)
(7)
(8)
(10)
(11)
(12)
(13)
70291301 101© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
53. Motor Will Not Start/Run (continued)
Please see following 2 pages for wiring diagram information.
Is there voltage across
terminals 1 & 4 of
cylinder motor?
Does the cylinder
motor run?
Correct wiring
between cylinder
motor and motor
control relay.
Replace cylinder
motor.
NO
NO
YES
YES
Motors are
operational.
Note: For high voltage three phase supply (380 volts
or higher), the cylinder and fan motors are supplied
by L1, L2, L3 through the motor relay terminals T1,
T2, T3. Make the appropriate adjustments when
doing voltage checks.
(9)
Correct wiring
between fan motor
and motor control
relay.
Replace fan motor.
Correct wiring
between terminal 6
of motor control
relay and supply.
Replace motor
control relay.
NO
NO
NO
NO
Also
n next
NO Correct wiring
between L2, L3 and
supply.
Replace motor
control relay.
YES
Single phase
TMB251STMB251S
102 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Motor Will Not Start/Run (Sheet 1 of 2)
TM
B18
65S
M
1
VA
LV
3G
ND3
GN
D
42 GN
D
TH
M
1
AU
X
TH
ER
M P
RO
T.
4
MA
IN 1
MA
IN 2
RU
N
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
AIR
FL
OW
SW
ITC
H
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
IC
M
IGN
CY
LIN
DE
R M
OT
OR
BLU/BLK
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
35
3
GRY/BLKBLK
M
5 8
6 9
LT. BLU
BLK/RED
BL
K/R
ED
12
0V
SE
RV
ICE
20
8-2
40
VS
ER
VIC
E
TB
1-L
1
TB
1-N
TB
1-L
2
N.C
.
BL
K
TH
ER
MIS
TO
R
WH
T/
BL
KWH
T
GA
S V
ALV
E
FIR
ST
CO
IL
SE
CO
ND
CO
IL
BA
M
74
GR
N/Y
EL
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
91
0
WH
TW
HTT
HE
RM
IST
OR
BL
KW
HT
H4
025 &
030 M
OD
ELS
035 M
OD
ELS
24Vac Ret
H3
-1 &
H3
-2Iin
= 3
-30
ma
TIM
E 2
0m
sec
MIN
.
ST
AR
T P
UL
SE
IN
PU
T
MA
CH
INE
RU
NN
ING
AV
AIL
AB
LE
OU
TP
UT
SE
E V
EN
DA
PP
LIC
AT
ION
DE
TA
IL
H2
-2 H2
-1
FS
-2
H1-2
51
23
86
41
11
09
71
2
CO
IN D
RO
PS
H5
24Vac
H1-4
12
34
56
7H
6
24Vac Ret
Ima
x=5
ma
H3
-3 &
H3
-4
Vm
ax=
28
Vd
c
OP
TO
OF
F W
HE
N
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
H2
-5
DO
OR
SE
NS
ING
CIR
CU
IT A
LL
OW
S
VO
LT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
TJU
MP
ER
H2
-2 T
O H
2-5
AS
FO
LL
OW
S:
24
0V
ac
- 1
3.6
K o
hm
10
wa
tt
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
RE
LA
Y O
NL
Y W
HE
N D
OO
R I
SC
LO
SE
D &
SW
ITC
H I
S P
RE
SS
ED
24
Va
c -
WIR
E J
UM
PE
R1
20
Va
c -
6.8
K o
hm
5 w
att
MD
C C
ON
TR
OL
CO
NT
RO
LP
OW
ER
SU
PP
LY
24VAC
H1-1
H1-3
H11L1
46
53
21
H3
10
0 O
HM
1/4
wa
tt
4N25
H2
-4
H2
-3
FS
-1
1
H2
-6
Do
or
Se
nse
Re
t
CIR
CU
IT C
ON
TR
OL
SH
EA
T R
EL
AY
TE
MP
. R
EG
UL
AT
ING
10
H4
89
74
56
23
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
1
VL
TV
LT
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
2
VL
T/W
HT
1
4 5
23
7
8
69
70291301 103© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Motor Will Not Start (Sheet 2 of 2)
TM
B17
70S
12
34
TB
1-L
1
TB
1-L
2
TB
1-L
3BLK/WHT
BLK/WHT
PR
IMA
RY
FU
SE
S
AG
C-2
A
250V
BLK BLK 12
SE
CO
ND
AR
YF
US
EM
DL
-3.5
A250V
M
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
LIN
TP
AN
EL
SW
ITC
HA
IR F
LO
WS
WIT
CH
REDRED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
N.C
.
BL
K
TH
ER
MIS
TO
R
M
14
13
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1.2
5 T
250V
RED RED
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
910
WH
TW
HTT
HE
RM
IST
OR
BL
KW
HT
H4
02
5 &
03
0 M
OD
EL
S0
35
MO
DE
LS
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
VL
TV
LT
/WH
T
TB
1-L
3
TB
1-L
2
TB
1-L
1
SE
ET
RA
NS
FO
RM
ER
CO
NF
IGU
RA
TIO
NJU
MP
ER
HC
1H
C2
L3
T3
H3
H5
L2
T2
24V
4.0
A
24V
1.5
A
12
34
56
1
AU
X
TH
ER
M P
RO
T.
4
MA
IN 1
MA
IN 2
RU
N
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
CY
LIN
DE
R M
OT
OR
BLU/BLK
3
GRY/BLK
M
BLK
BLK/WHT
BLK/RED
L1
L2
L3
T1
T2
T3
MM
LT. BLU
LT. BLU
HC
1
HC
2
35
5
TE
MP
. R
EG
ULA
TIN
G
HE
AT
RE
LA
YC
IRC
UIT
CO
NT
RO
LS
32
15
FS
-2
H2
-1
4N25
24Vac Ret
24Vac
MA
CH
INE
RU
NN
ING
H6 3
AP
PL
ICA
TIO
N D
ET
AIL
SE
E V
EN
D
H5
74
68
12
91
01
1
CO
IN D
RO
PS
H1-4
H1-2
21
65
46
7
Vm
ax=
28V
dc
Imax=
5m
a
H3 5
43
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
ST
AR
T P
ULS
E IN
PU
T
AV
AIL
AB
LE
OU
TP
UT
TIM
E 2
0m
sec
MIN
.Iin
= 3
-30m
aH
3-1
& H
3-2
OP
TO
OF
F W
HE
NH
3-3
& H
3-4
MD
C C
ON
TR
OL
120V
ac
- 6.8
K o
hm
5 w
att
24V
ac
- W
IRE
JU
MP
ER
240V
ac
- 13.6
K o
hm
10 w
att
JUM
PE
R H
2-2
TO
H2-5
AS
FO
LLO
WS
:V
OLT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
T
H2
-2
H2
-5
SU
PP
LY
PO
WE
RC
ON
TR
OL
CLO
SE
D &
SW
ITC
H IS
PR
ES
SE
DR
ELA
Y O
NLY
WH
EN
DO
OR
IS
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
DO
OR
SE
NS
ING
CIR
CU
IT A
LLO
WS
24Vac Ret
24VAC
H1-1
H1-3
9H
410
67
8
1/4
wa
tt
121
00
OH
M
H11L1
FS
-1
H2
-4
H2
-3
Do
or
Se
nse
Re
t
H2
-6
32
41
1
3
2
12 13
10 11
69 TM
B17
70
S
104 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
54. Unit Will Not Heat – Gas
Note: Tests are conducted with unit runningand calling for heat.
All voltage checks are referenced totransformer neutral.
Correct wiringbetween FS-2 andCOM of lint drawer.
Is there voltage atFS-2 of EDC control?
Is there voltageat FS-1 of EDC
control?
Correct wiringbetween COM ofairflow switch and
FS-1 of EDCcontrol.
Is there voltage at COMof airflow switch?
Check for properfunction of airflow
switch and replace ifnecessary.
Is there voltage acrossCOM & N.C. terminal
of airflow switch?
Correct wiringbetween terminal 7
on motor controlrelay and N.C.
terminal on airflowswitch.
Is there voltage atterminal 7 of motor
control relay?
Replace motorcontrol relay.
Is there voltage acrossterminals 7 & 4 of
motor control relay?
Correct wiringbetween terminal 3
of fan motorcentrifugal switchand terminal 4 of
motor control relay.
Is there voltage atterminal 3 of fanmotor centrifugal
switch?
Replace fan motor.Is there voltage across
terminals 3 & 5 of fan motor centrifugal switch?
Correct wiringbetween cabinet
limit and terminal 5of fan motor
centrifugal switch.
Is there voltage to theinput side of the
cabinet limit?
Replace cabinetlimit.
Is there voltage acrosscabinet limit?
Correct wiringbetween stove limit 1
and cabinet limit.
Is there voltage to theinput side of the stove
limit?
NO
YES
Is thethermistor
operational?
Replace EDCcontrol.
Replacethermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
TMB1869S
70291301 105© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
54. Unit Will Not Heat – Gas (continued)
Please see following page for wiring diagram information.
Replace the stovelimit.
Is there voltage acrossthe stove limit 1?
NO
YES
(12)
TMB1869S
(13)
Correct wiringbetween stove limit 1
and stove limit 2.
Is there voltage toinput side ofstove limit 2?
Replace stove limit 2.
NO
YES
NO
YES
(14)
Is there voltageacross stove limit 2?
Correct wiringbetween terminal 2of ICM and stove
limit 2.
Is there voltage toterminal 2 of
the Ignition ControlModule (ICM)?
Replace ICM board.Is there voltage atterminal 1 of ICM
board?
Correct wiringbetween gas valve
and ICM board.
Is there voltage acrossthe coils of the gas
valve?
NO
YES
NO
YES
NO
YES
(16)
(15)
(17)
Note: Make sure unit isnot in a lock out
condition.
Replace gas valvecoils or complete
gas valve.
Is there gas flowthrough the gas valve?
Replace highvoltage ignitioncable or igniter.
Does the igniter spark?
YES NO
YES
NO
YES
Unit operational.Is there a flame?YES
NO
TMB1869S
106 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Unit Will Not Heat – Gas
TM
B18
66S
M
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
AIR
FL
OW
SW
ITC
H
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
35
3
GRY/BLKBLK
M
5 8
LT. BLU
N.C
.
BL
K
TH
ER
MIS
TO
R
BA
M
74
RE
D/B
LK
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
91
0
WH
TW
HTT
HE
RM
IST
OR
BLK
WH
T
H4
02
5 &
03
0 M
OD
EL
S0
35
MO
DE
LS
24Vac Ret
H3
-1 &
H3
-2Iin
= 3
-30
ma
TIM
E 2
0m
sec
MIN
.
ST
AR
T P
UL
SE
IN
PU
T
MA
CH
INE
RU
NN
ING
AV
AIL
AB
LE
OU
TP
UT
SE
E V
EN
DA
PP
LIC
AT
ION
DE
TA
IL
H2-2
H2-1
FS
-2
H1-2
51
23
86
411
10
97
12
CO
IN D
RO
PS
H5
24Vac
H1-4
12
34
56
7H
6
24Vac Ret
Ima
x=5
ma
H3
-3 &
H3
-4
Vm
ax=
28
Vd
c
OP
TO
OF
F W
HE
N
HE
AT
RE
LA
Y
MO
TO
R R
ELA
Y
H2-5
DO
OR
SE
NS
ING
CIR
CU
IT A
LL
OW
S
VO
LT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
TJU
MP
ER
H2-2
TO
H2-5
AS
FO
LLO
WS
:
24
0V
ac
- 1
3.6
K o
hm
10
wa
tt
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
RE
LA
Y O
NL
Y W
HE
N D
OO
R I
SC
LO
SE
D &
SW
ITC
H I
S P
RE
SS
ED
24
Va
c -
WIR
E J
UM
PE
R1
20
Va
c -
6.8
K o
hm
5 w
att
MD
C C
ON
TR
OL
CO
NT
RO
LP
OW
ER
SU
PP
LY
24VAC
H1-1
H1-3
H11L1
46
53
21
H3
100 O
HM
1/4
watt
4N25H
2-4
H2-3
FS
-11
H2-6
Door
Sense
Ret
CIR
CU
IT C
ON
TR
OL
SH
EA
T R
EL
AY
TE
MP
. R
EG
ULA
TIN
G
10
H4
89
74
56
23
1
VA
LV3
GN
D3
GN
D
42 GN
D
TH
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
1
IC
M
IGN
VLT
VLT
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
2VLT
/WH
T
WH
T/
BLKW
HT
GA
S V
AL
VE
FIR
ST
CO
IL
SE
CO
ND
CO
ILG
RN
/YE
L
WHT/VLT
WHT
1
23
46
8
1012
14
11
13
9
15
17
16
7
5
70291301 107© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
55. Unit Will Not Heat – Steam
Note: Tests are conducted with unit running
and calling for heat.
All voltage checks are referenced to
transformer neutral.
Correct wiring
between FS-2 and
COM of lint drawer.
Is there voltage on
FS-2 of EDC control?
Is there voltage
on FS-1 of
EDC control?
Correct wiring
between COM of
airflow switch and
FS-1 of EDC
control.
Is there voltage on
COM of airflow
switch?
Check for proper
function of airflow
switch and replace if
necessary.
Is there voltage across
COM & N.C. terminal
of airflow switch?
Correct wiring
between terminal 7
on motor control
relay and N.C.
terminal on airflow
switch.
Is there voltage on
terminal 7 of motor
control relay?
Replace motor
control relay.
Is there voltage across
terminals 7 & 4 of
motor control relay?
Correct wiring
between terminal 3
of fan motor
centrifugal switch
and terminal 4 of
motor control relay.
Is there voltage on
terminal 3 of fan
motor centrifugal switch?
Replace fan motor.
Is there voltage across
terminals 3 & 5 of
fan motor centrifugal switch?
Correct wiring
between cabinet
limit and terminal 5
of fan motor
centrifugal switch.
Is there voltage to the
input side of the
cabinet limit?
Replace cabinet
limit.
Is there voltage across
cabinet limit?
Correct wiring
between stove limit
and cabinet limit.
Is there voltage to the
input side of the stove
limit?
NO
YES
Is the
thermistor
operational?
Replace EDC
control.Replace
thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Single and stacked
units.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
TMB1841S
108 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
55. Unit Will Not Heat – Steam (continued)
Please see following page for wiring diagram information.
Correct wiring
between terminal 3
of fan motor
centrifugal switch
and terminal 4 of
motor control relay.
Replace fan motor.
Correct wiring
between cabinet
limit and terminal 5
of fan motor
centrifugal switch.
Replace cabinet
limit.
Correct wiring
between stove limit
and cabinet limit.
Replace the stove
limit.
Is there voltage across
the stove limit?
Correct wiring
between steam
valve and stove
limit.
Is there voltage across
the coil of the steam valve?
NO
YES
NO
YES
(12)
(13)
Does the steam valve
open allowing steam to flow?
Unit operational.
Replace or rebuild
steam valve.
No
TMB1841S
No Heat
continued.
TMB1841S
70291301 109© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Unit Will Not Heat – Steam
TM
B17
72S
M
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
AIR
FLO
WS
WIT
CH
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
35
N.C
.
BLK
TH
ER
MIS
TO
R
BA
M
74
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
910
WH
TW
HTT
HE
RM
IST
OR
BLK
WH
T
H4
025 &
030 M
OD
ELS
035 M
OD
ELS
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
ELIM
ITT
HE
RM
OS
TA
T
VLT
VLT
/WH
TW
HT
/BLK
ST
EA
MV
ALV
E
5
TE
MP
. R
EG
ULA
TIN
G
HE
AT
RE
LA
YC
IRC
UIT
CO
NT
RO
LS
32
15
FS
-2
H2-1
4N25
24Vac Ret
24Vac
MA
CH
INE
RU
NN
ING
H6 3
AP
PLIC
AT
ION
DE
TA
ILS
EE
VE
ND
H5
74
68
12
910
11
CO
IN D
RO
PS
H1-4
H1-2
21
65
46
7
Vm
ax=
28V
dc
Imax=
5m
a
H3 5
43
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
ST
AR
T P
ULS
E IN
PU
T
AV
AIL
AB
LE
OU
TP
UT
TIM
E 2
0m
sec
MIN
.Iin
= 3
-30m
aH
3-1
& H
3-2
OP
TO
OF
F W
HE
NH
3-3
& H
3-4
MD
C C
ON
TR
OL
120V
ac
- 6.8
K o
hm
5 w
att
24V
ac
- W
IRE
JU
MP
ER
240V
ac
- 13.6
K o
hm
10 w
att
JUM
PE
R H
2-2
TO
H2-5
AS
FO
LLO
WS
:V
OLT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
T
H2-2
H2-5
SU
PP
LY
PO
WE
RC
ON
TR
OL
CLO
SE
D &
SW
ITC
H IS
PR
ES
SE
DR
ELA
Y O
NLY
WH
EN
DO
OR
IS
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
DO
OR
SE
NS
ING
CIR
CU
IT A
LLO
WS
24Vac Ret
24VAC
H1-1
H1-3
9H
410
67
8
1/4
watt
121
00 O
HM
H11L1
FS
-1
H2-4
H2-3
Door
Sense
Ret
H2-6
32
41
1
7
84
6
1012
13
52
3
119
TM
B17
72
S
110 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
56. Unit Will Not Heat – Electric
Note: Tests are conducted with unit running
and calling for heat.
All voltage checks are referenced to
transformer neutral.
Correct wiring
between FS-2 and
COM of lint panel
switch.
Is there voltage at
FS-2 of EDC control?
Is there voltage
on FS-1 of
EDC control?
Correct wiring
between COM of
airflow switch and
FS-1 of EDC
control.
Is there voltage at COM
of airflow switch?
Check for proper
function of airflow
switch and replace if
necessary.
Is there voltage across
COM & N.C. terminal
of air flow switch?
Correct wiring
between terminal 7
on motor control
relay and N.C.
terminal on airflow
switch.
Is there voltage at
terminal 14 of motor
control relay?
Replace motor
control relay.
Is there voltage across
terminals 13 & 14 of
motor control relay?
Correct wiring
between terminal 3
of fan motor
centrifugal switch
and terminal 13 of
motor control relay.
Is there voltage at
terminal 3 of fan
motor centrifugal
switch?
Replace fan motor.
Is there voltage across
terminals 3 & 5 of
fan motor centrifugal switch?
Correct wiring
between cabinet
limit and terminal 5
of fan motor
centrifugal switch.
Is there voltage to the
input side of the
cabinet limit?
Replace cabinet
limit.
Is there voltage across
cabinet limit?
Correct wiring
between stove limit
and cabinet limit.
Is there voltage to the
input side of the stove
limit?
NO
YES
Is the
thermistor
operational?
Replace EDC
control.Replace
thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Single and stacked
units.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
TMB1842S
70291301 111© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
56. Unit Will Not Heat – Electric (continued)
Please see following page for wiring diagram information.
Replace the stove
limit.
Is there voltage across
the stove limit?
Correct wiring
between heater
contactor and stove
limit.
Is there voltage across
the coil(s) of the heater
contactor(s)?
No Heat
continued.
NO
YES
NO
YES
(12)
(13)
Is there voltage to the
L1, L2 and L3
terminals of HC1?
Correct wiring
between HC1 and
Line voltage.
Do all elements
produce heat?
Check elements for
shorts or opens.
Check wires
between contactors
and elements.
Is there voltage across
T1 & T2, T2 & T3 and
T3 & T1?
Check for
proper operation of
contactors, replace
them if necessary.
Is there voltage to the
L1, L2 and L3
terminals of HC2?
YES
NO
Correct wiring
between HC2 and
Line voltage.
(14)
(15)
YES
NO
(16)(17)(18)
NO
YES
NO
YES
Unit is operational
Note: Please make
the oppropriate
adjustments if your
unit is single phase.
TMB1842STMB1842S
112 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Unit Will Not Heat – Electric
TM
B17
73S
L3
L2L1
SE
RV
ICE
CO
NN
EC
TIO
N
TB
3
12
34
BLK/WHT
BLK/WHT
PR
IMA
RY
FU
SE
S
AG
C-2
A
25
0V
BLK BLK 12
HE
AT
ING
EL
EM
EN
TS
SE
CO
ND
AR
YF
US
EM
DL
-3.5
A2
50
V
M
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
LIN
TP
AN
EL
SW
ITC
HA
IR F
LO
WS
WIT
CH
REDRED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
N.C
.
BL
K
TH
ER
MIS
TO
R
M
14
13
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1
.25
T2
50
V
RED RED
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
91
0
WH
TW
HTT
HE
RM
IST
OR
BL
KW
HT
H4
02
5 &
03
0 M
OD
EL
S0
35
MO
DE
LS
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
EL
IMIT
TH
ER
MO
ST
AT
VLT
VLT
/WH
T
TB
1-L
3
TB
1-L
2
TB
1-L
1
SE
ET
RA
NS
FO
RM
ER
CO
NF
IGU
RA
TIO
NJU
MP
ER
HC
2
L3 T3
T1
L1
HC
2H
C1
HC
2H
C1
HC
1
L3
T3
H3
H5
L2
T2
L2
T2
H2
H4
L1 T1
H1
H6
24
V
4.0
A
24
V
1.5
A
12
34
56
HC
1
HC
2
35
5
TE
MP
. R
EG
ULA
TIN
G
HE
AT
RE
LA
YC
IRC
UIT
CO
NT
RO
LS
32
15
FS
-2
H2-1
4N25
24Vac Ret
24Vac
MA
CH
INE
RU
NN
ING
H6 3
AP
PL
ICA
TIO
N D
ET
AIL
SE
E V
EN
D
H5
74
68
12
910
11
CO
IN D
RO
PS
H1-4
H1-2
21
65
46
7
Vm
ax=
28
Vd
c Im
ax=
5m
a
H3 5
43
HE
AT
RE
LA
Y
MO
TO
R R
EL
AY
ST
AR
T P
ULS
E IN
PU
T
AV
AIL
AB
LE
OU
TP
UT
TIM
E 2
0m
sec
MIN
.Iin
= 3
-30
ma
H3
-1 &
H3
-2
OP
TO
OF
F W
HE
NH
3-3
& H
3-4
MD
C C
ON
TR
OL
12
0V
ac
- 6
.8K
oh
m 5
wa
tt2
4V
ac
- W
IRE
JU
MP
ER
240V
ac
- 13.6
K o
hm
10 w
att
JUM
PE
R H
2-2
TO
H2-5
AS
FO
LLO
WS
:V
OL
TA
GE
CO
NF
IGU
RA
TIO
N I
NP
UT
H2-2
H2-5
SU
PP
LY
PO
WE
RC
ON
TR
OL
CL
OS
ED
& S
WIT
CH
IS
PR
ES
SE
DR
EL
AY
ON
LY
WH
EN
DO
OR
IS
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
DO
OR
SE
NS
ING
CIR
CU
IT A
LL
OW
S
24Vac Ret
24VAC
H1-1
H1-3
9H
41
06
78
1/4
wa
tt
121
00
OH
M
H11L1
FS
-1
H2-4
H2-3
Door
Sense
Ret
H2-6
32
41
1
14
7
84
6
1012
13
52
3
11
17
16
1815
9
TM
B17
73
S
70291301 113© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
57. Error CodesOP - Indicates physical “open” in the thermistor circuit. Possible causes are: 1) thermistor, 2) wiring between con-trol and thermistor, 3) control.SH - Indicates a “short” in the thermistor circuit. Possible causes are: 1) shorted thermistor, 2) a short in the wiring between control and thermistor, 3) control.
Card Reader Machines: (In addition to the above errors)EC:19 - Indicates no card reader communication. The control and the reader cannot communicate. Check reader, control and harness.
NOTE: For all other card reader errors, consult the card reader manual provided by the manufacturer.
Display Definition Corrective Action
OP Indicates an open circuit in the thermistor. • Check thermistor. Replace if inoperative.• Check wiring between control and
thermistor. Refer to wiring diagram for proper wiring.
• Check control. Replace if inoperative.
SH Indicates a short circuit in the thermistor. • Check thermistor. Replace if inoperative.• Check wiring between control and
thermistor. Refer to wiring diagram for proper wiring.
• Check control. Replace if inoperative.
EC:19
*Card Readermodels only
Indicates no communication between control and card reader.
• Check card reader. Replace if inoperative.• Check wire harness connecting card reader
and control. Replace if inoperative.• Check control. Replace if inoperative.
114 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Gas ModelsSchematic
TM
B18
67S
PR
IMA
RY
FU
SE
AG
C-2
A
250V
SE
CO
ND
AR
YF
US
EM
DL-3
.5A
250V
M
1
VA
LV3
GN
D3
GN
D
42 GN
D
TH
M
N
1
AU
X
TH
ER
M P
RO
T.
4
MA
IN 1
MA
IN 2
RU
N
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
LIN
TP
AN
EL
SW
ITC
H
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
ELIM
ITT
HE
RM
OS
TA
T 1
AIR
FLO
WS
WIT
CH
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
IC
M
BLK
L1
IGN
RED
LT. BLU
CY
LIN
DE
R M
OT
OR
BLU/BLK
SE
RV
ICE
CO
NN
EC
TIO
N
TB
1
BLK RED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
VL
TV
LT
ST
OV
ELIM
ITT
HE
RM
OS
TA
T 2VL
T/W
HT
35
3
GRY/BLKBLK
M
5 8
6 9
LT. BLU
BLK/RED
BL
K/R
ED
120V
SE
RV
ICE
208-2
40V
SE
RV
ICE
TB
1-L
1
TB
1-N
TB
1-L
2
N.C
.
12
12
BLK
TH
ER
MIS
TO
R
WH
T/
BL
KWH
T
GA
S V
ALV
E
FIR
ST
CO
IL
SE
CO
ND
CO
IL
BA
M
74
GR
N/Y
EL
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1.2
5 T
250V
RED RED
WH
T
34
GR
N/Y
EL
WH
T
12
34
56
78
910
WH
TW
HTT
HE
RM
IST
OR
BLK
WH
T
H4
025 &
030 M
OD
ELS
035 M
OD
ELS
L2
24V
3.5
A
120V
24V
1.5
A
CO
IN D
RO
P V
EN
D O
PT
ION
SIN
GLE
, D
UA
L A
ND
CO
IN D
RO
P R
EA
DY
CA
RD
RE
AD
ER
RE
AD
Y V
EN
D O
PT
ION
VE
ND
AP
PL
ICA
TIO
ND
ET
AIL
S
JUM
PE
RJU
MP
ER
JUM
PE
RJU
MP
ER
SW
ITC
HS
WIT
CH
SW
ITC
HS
WIT
CH
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
BRN BRN BRN BRN2222
GRY GRY GRY GRY
H5
33H
5H
533
H5
PNK PNK PNK PNK
511
5511
58
644
688
644
68
10
977
910
10
977
910
12
11
11
12
12
11
11
12
SW
ITC
HC
OIN
VA
ULT
SW
ITC
HS
ER
VIC
E D
OO
R
BRN
GRY
CO
IN D
RO
P 1
(OP
TIO
NA
L)
(OP
TIO
NA
L)
CO
IN D
RO
P 2
PNK
H5
31
58
64
2
RED
BLK
WHT
BLU
12
11
10
97
BLK
WHT
PLE
AS
E C
ON
SU
LT
CA
RD
RE
AD
ER
IN
ST
ALLA
TIO
NM
AN
UA
L F
OR
PR
OP
ER
CO
NN
EC
TIO
NS
TO
CO
NT
RO
L
43
21
H6
54
76
65
13
2H
3
41
23
54
H6
56
76
H3
32
1
24Vac Ret
H3-1
& H
3-2
Iin=
3-3
0m
aT
IME
20m
sec
MIN
.
ST
AR
T P
UL
SE
IN
PU
T
MA
CH
INE
RU
NN
ING
AV
AIL
AB
LE
OU
TP
UT
SE
E V
EN
DA
PP
LIC
AT
ION
DE
TA
IL
H2
-2
H2
-1
FS
-2
H1-2
51
23
86
41
11
09
71
2
CO
IN D
RO
PS
H5
24Vac
H1-4
12
34
56
7H
6
24Vac Ret
Imax=
5m
a
H3-3
& H
3-4
Vm
ax=
28V
dc
OP
TO
OF
F W
HE
N
HE
AT
RE
LA
Y
MO
TO
R R
ELA
Y
H2
-5
DO
OR
SE
NS
ING
CIR
CU
IT A
LLO
WS
VO
LT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
TJU
MP
ER
H2
-2 T
O H
2-5
AS
FO
LL
OW
S:
24
0V
ac
- 1
3.6
K o
hm
10
wa
tt
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
RE
LA
Y O
NLY
WH
EN
DO
OR
IS
CLO
SE
D &
SW
ITC
H IS
PR
ES
SE
D
24V
ac
- W
IRE
JU
MP
ER
120V
ac
- 6.8
K o
hm
5 w
att
MD
C C
ON
TR
OL
CO
NT
RO
LP
OW
ER
SU
PP
LY
24VAC
H1-1
H1-3
H11L1
46
53
21
H3
100 O
HM
1/4
watt
4N25
H2
-4
H2
-3
FS
-11
H2
-6
Do
or
Se
nse
Re
t
CIR
CU
IT C
ON
TR
OLS
HE
AT
RE
LA
Y
TE
MP
. R
EG
UL
AT
ING
10
H4
89
74
56
23
1.
DO
OR
SW
ITC
H:
N.O
. C
ON
TA
CT
CL
OS
ED
WH
EN
DO
OR
CL
OS
ED
.
2. M
OT
OR
S A
RE
PR
OT
EC
TE
D B
Y IN
TE
RN
AL O
VE
RLO
AD
S.
3. T
HE
RM
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TA
T: O
PE
NS
WH
EN
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MP
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RE
AC
HE
D.
4.
CO
NN
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T E
LE
CT
RIC
AL S
ER
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RO
PE
R V
OLT
AG
E
A
ND
CU
RR
EN
T R
AT
ING
TO
TB
1.
NO
TE
S:
70291301 115© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Gas ModelsConnection Diagram
TM
B18
68S
MO
TO
RF
AN
LO
W
2W
HT
/
WH
TB
RN
/
BR
N5
4
BLK
GR
Y/
BLU
LT
.
31
4
BR
N
BLU
SE
RV
ICE
DO
OR
CA
RD
RE
AD
ER
RE
AD
Y V
EN
D O
PT
ION
6
SIN
GL
E,
DU
AL
AN
D C
OIN
DR
OP
RE
AD
Y
SW
ITC
H
PN
K
6 72 3
H3
541
CO
IN V
EN
D O
PT
ION
GR
Y
GR
Y
BR
N
1 2 4 5 63 7
H3
GR
Y
BR
N
GR
Y
SE
RV
ICE
DO
OR
CO
IN D
RO
P 2
(O
PT
ION
AL)
CO
IN D
RO
P 1
(O
PT
ION
AL)
VE
ND
AP
PLIC
AT
ION
DE
TA
ILS
4
H6
651 322 139 87
BLK
WH
T
BLU
RE
D
BLK
WH
T
2 3 1
2 3 1
6B
LK
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WH
T
RE
D
H5
11
12
BLK
WH
T
RE
D
22
3 1
3 1
9 8 2 13 42 3 517
H6
BR
N
PN
K
GR
Y
BLK
BLU
WH
T
2 13
12 411 6 105
2B
LK
WH
T
RE
D
3 1
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SW
ITC
HPR
OP
ER
CO
NN
EC
TIO
N T
OC
ON
TR
OL
MA
NU
AL F
OR
INS
TA
LLA
TIO
NC
AR
D R
EA
DE
RP
LE
AS
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ON
SU
LT
TH
ER
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TO
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BLU
/BLK
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MO
TO
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LO
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OR
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LE
CO
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INE
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BLK
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T1
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GR
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96
116
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WH
T
VLT
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SE
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OR
CO
NN
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LK
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OR
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Y/B
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BR
N/W
HT
WH
T/B
RN
11
22
TB
1LT. BLU
L2
CO
NN
EC
TIO
NS
ER
VIC
E
L1 N
ORG/WHT
GRY/BLK
A7
B
89
RE
LA
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OR
45
6
BLK
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BLK
BLK/RED
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CO
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11
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WH
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LT
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OR
G/W
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T/B
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T
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774
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12
12
13
14
14
13
64
11
11
46
BR
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112
37
89
559
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10
10
WH
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BR
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G/W
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BR
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BR
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D
RE
D/B
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WH
T/B
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SECONDARY FUSEREDRED
RE
D/B
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WHT/BRN
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LU
BR
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10
59
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52
17 7
12
64
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6
RE
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WH
T/V
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OR
G
RE
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HP
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ELN
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CO
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CO
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D/
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OR
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14
14
14
13
12 12
13
14
3 37
10
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7
BLK
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WHT/VLT
GR
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15
13
5 513
15
69
8 89
622
12
11
1 111
12
PN
K
BLK
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T
ORG/BRN
RED/BLK
WHT
RED/BLK
RED/BLK
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RE
D/B
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T/B
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PNK
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3 1 2 5 4 664
64
52
5211
MO
DE
LS
CO
IN
CO
IN V
AU
LT
GR
Y
SW
ITC
H
N.O
.
PN
K
CO
M.
33
BLK
MO
DE
LS
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AD
ER
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JUM
PE
R
BLK
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SS
H4
6
PRIMARY FUSE
TR
AN
SF
OR
ME
R
WHT
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D1
1
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D2
2
RE
D
RE
D3
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11
BLK
BLK
22
BLKBLK
66
MO
DE
LS
035
4
MO
DE
LS
025 &
030
9 1087
9 1087
12
21
3 54
H4
1 2
BLK
WH
T
3 54
WH
T
BLK
21
21
AP
PL
ICA
TIO
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DC
4
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H2
23
51
FS-1GND
H1
13
2
CO
NT
RO
L
1 6 72 54H
33
DE
TA
ILH
64 5 63216
SE
E V
EN
D
7 8 1324 10
H5
9511
12
116 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Steam ModelsSchematic
TM
B17
76S
NO
TE
S:
1.
DO
OR
SW
ITC
H -
CO
NT
AC
TS
CL
OS
ED
WH
EN
DO
OR
CL
OS
ED
.
2.
MO
TO
R I
S P
RO
TE
CT
ED
BY
IN
TE
RN
AL
TH
ER
MA
L P
RO
TE
CT
OR
.
3.
HE
AT
ER
RE
LA
Y O
PE
NS
WH
EN
TE
MP
ER
AT
UR
E I
S R
EA
CH
ED
.
M
L2N
1
AU
X
TH
ER
M P
RO
T.
4
MA
IN 1
MA
IN 2
RU
N
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
L1
CY
LIN
DE
R M
OT
OR
BLU/BLK
SE
RV
ICE
CO
NN
EC
TIO
N
TB
1
3
GRY/BLKBLK
M
5 8
6 9
LT. BLU
BLK/RED
BL
K/R
ED
12
0V
SE
RV
ICE
20
8-2
40
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ER
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TB
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1-L
2
LT. BLU
PR
IMA
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M
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OT
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LIN
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.
12
12
BLK
TH
ER
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TO
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BA
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74
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56
78
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TE
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LA
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32
15
FS
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24Vac Ret
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SE
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EN
D
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74
68
12
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01
1
CO
IN D
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H1-2
21
65
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28
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c Im
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a
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43
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AT
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LE
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ES
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NT
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OR
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ING
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LL
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nse
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t
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32
41
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RD
RE
AD
ER
RE
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EN
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PT
ION
12
12
12
12
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RV
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CH
JUM
PE
RJU
MP
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JUM
PE
RJU
MP
ER
PNK PNK PNK PNK
GRY GRY GRY GRY
BRN BRN BRN BRN
4444H
533
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55
1155
115
22227777
866
8866
811
11
11
11
10
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01
099
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CO
NN
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TIO
NS
TO
CO
NT
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AN
UA
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OR
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ER
RE
AD
ER
IN
ST
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TIO
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LE
AS
E C
ON
SU
LT
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RD
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45
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36
75
64
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23
1
CO
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RO
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(OP
TIO
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GL
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TIO
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VE
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AT
ION
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52
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BLK
BLK
76
89
10
11
5
H6
14
32
67
65
4
DE
TA
ILS
H3
12
3
TM
B1
77
6S
70291301 117© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Steam ModelsConnection Diagram
VL
T/W
HT
TH
ER
MIS
TO
R
ST
EA
MC
AB
INE
T L
IMIT
BL
K
LO
W
WH
TB
RN
/
BR
NW
HT
/
42
5
3
BL
U
BR
N
MO
TO
RC
YL
IND
ER
LO
W
MO
TO
RF
AN
BL
U
GR
Y/
BL
UL
T.
4
1
BL
KB
LU
/
421
LT
.4
VA
LV
E
BR
N
BL
U
AIR
FLO
W
TH
ER
MO
ST
AT
ST
OV
E L
IMIT
CO
M.
WH
T/V
LT
TH
ER
MO
ST
AT
VL
T
SW
ITC
H
WHT/ORG
OR
G/B
RNN
.O.
N.C
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RG
VL
T/W
HT
LT. BLU
FO
R 2
08
V A
ND
24
0V
SE
RV
ICE
.1
20
V S
ER
VIC
E A
ND
TO
L2
FO
RC
ON
NE
CT
BL
K/R
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TO
L1
FO
R
SE
RV
ICE
22
BR
N/W
HT
BL
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LT
. B
LU
WH
T/B
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11
GR
OU
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TB
1
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RY
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GR
N/Y
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GR
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TW
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112
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78
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WH
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45
CO
NN
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ER
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644 6
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BL
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SECONDARY FUSE
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DY
762 4 5H
3
31
PN
K
SW
ITC
H
GR
Y
BR
N
GR
Y
H3
5 76G
RY
BR
N
GR
Y
3 4216
CO
IN D
RO
P 1
(O
PT
ION
AL)
CO
IN D
RO
P 2
(O
PT
ION
AL)
33
WH
T4
33
3 5H
6
41 21
11
7 8 32105 9
BL
U
WH
T
22
RE
D
BL
K
11
H5
12 11 6
BL
K2
2
3W
HT
4W
HT
WH
T
RE
D
BL
K
RE
D
H6
532 4
PN
K
11
WH
T
BL
U
GR
Y
BR
N
7 328
RE
D5 10
BL
K9
3 11 2
VE
ND
AP
PL
ICA
TIO
N D
ET
AIL
S
BL
K
H5
BL
K611
12
2
SW
ITC
HS
ER
VIC
E D
OO
R
CO
NN
EC
TIO
N T
OC
ON
TR
OL
INS
TA
LLA
TIO
NM
AN
UA
L F
OR
PR
OP
ER
PLE
AS
E C
ON
SU
LT
CA
RD
RE
AD
ER
TM
B17
77
S
118 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Electric ModelsSchematic
TM
B17
74S
L3
L2L1
SE
RV
ICE
CO
NN
EC
TIO
N
TB
3
12
34
TB
1-L
1
TB
1-L
2
TB
1-L
3
BLK/WHT
BLK/WHT
PR
IMA
RY
FU
SE
S
AG
C-2
A
250V
BLK BLK 12
HE
AT
ING
EL
EM
EN
TS
SE
CO
ND
AR
YF
US
EM
DL-3
.5A
250V
M
FA
N M
OT
OR
CE
NT
RIF
UG
AL
SW
ITC
H
DO
OR
SW
ITC
H
WH
T
CH
AS
SIS
GR
OU
ND
WH
T
LIN
TP
AN
EL
SW
ITC
HA
IR F
LO
WS
WIT
CH
REDRED
RE
D/W
HT
N.O
.C
OM
CO
MN
.O.
BR
N/R
ED
WH
T
OR
G/B
RN
CO
M
N.O
.OR
GB
RN
OR
G/
WH
TW
HT
/B
RN
BR
N/W
HT
N.C
.
BLK
TH
ER
MIS
TO
R
M
14
13
RE
D/B
LU
WH
T
RED/WHT
RE
D/B
LK
WHT/VLT
WHT
RE
D/B
LKRED/BLK
RE
D
WH
T/B
LU
SE
CO
ND
AR
YF
US
E1.2
5 T
250V
RED RED
WH
T
GR
N/Y
EL
WH
T
12
34
56
78
910
WH
TW
HTT
HE
RM
IST
OR
BLK
WH
T
H4
02
5 &
03
0 M
OD
EL
S0
35
MO
DE
LS
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
ST
OV
ELIM
ITT
HE
RM
OS
TA
T
VL
TV
LT
/WH
T
TB
1-L
3
TB
1-L
2
TB
1-L
1
SE
ET
RA
NS
FO
RM
ER
CO
NF
IGU
RA
TIO
NJU
MP
ER
HC
2
L3 T3
T1
L1
HC
2H
C1
HC
2H
C1
HC
1
L3
T3
H3
H5
L2
T2
L2
T2
H2
H4
L1 T1
H1
H6
24V
4.0
A
24V
1.5
A
12
34
56
1
AU
X
TH
ER
M P
RO
T.
4
MA
IN 1
MA
IN 2
RU
N
5
RU
N
MA
IN 2
MA
IN 1
4
FA
NM
OT
OR
TH
ER
M P
RO
T.
AU
X
1
CY
LIN
DE
R M
OT
OR
BLU/BLK
3
GRY/BLK
M
BLK
BLK/WHT
BLK/RED
L1
L2
L3
T1
T2
T3
MM
LT. BLU
LT. BLU
NO
TE
S:
1.
DO
OR
SW
ITC
H -
CO
NT
AC
TS
CL
OS
ED
WH
EN
DO
OR
CL
OS
ED
.
2.
MO
TO
R I
S P
RO
TE
CT
ED
BY
IN
TE
RN
AL
TH
ER
MA
L P
RO
TE
CT
OR
.
3.
HE
AT
ER
RE
LA
Y O
PE
NS
WH
EN
TE
MP
ER
AT
UR
E I
S R
EA
CH
ED
.
208V
CO
NF
IGU
RA
TIO
N
JUM
PE
R
200-2
08V
MO
DE
LS
240V
CO
NF
IGU
RA
TIO
N
JUM
PE
R
230-2
40V
MO
DE
LS
12
34
56
65
43
21
TR
AN
SF
OR
ME
RC
ON
FIG
UR
AT
ION
JUM
PE
R D
ET
AIL
S 12
21
HC
1
HC
2
35
5
TE
MP
. R
EG
UL
AT
ING
HE
AT
RE
LA
YC
IRC
UIT
CO
NT
RO
LS
32
15
FS
-2
H2
-1
4N25
24Vac Ret
24Vac
MA
CH
INE
RU
NN
ING
H6 3
AP
PLIC
AT
ION
DE
TA
ILS
EE
VE
ND
H5
74
68
12
91
01
1
CO
IN D
RO
PS
H1-4
H1-2
21
65
46
7
Vm
ax=
28V
dc
Imax=
5m
a
H3 5
43
HE
AT
RE
LA
Y
MO
TO
R R
ELA
Y
ST
AR
T P
UL
SE
IN
PU
T
AV
AIL
AB
LE
OU
TP
UT
TIM
E 2
0m
sec
MIN
.Iin
= 3
-30m
aH
3-1
& H
3-2
OP
TO
OF
F W
HE
NH
3-3
& H
3-4
MD
C C
ON
TR
OL
120V
ac
- 6.8
K o
hm
5 w
att
24V
ac
- W
IRE
JU
MP
ER
24
0V
ac
- 1
3.6
K o
hm
10
wa
tt
JUM
PE
R H
2-2
TO
H2
-5 A
S F
OL
LO
WS
:V
OLT
AG
E C
ON
FIG
UR
AT
ION
IN
PU
T
H2
-2
H2
-5
SU
PP
LY
PO
WE
RC
ON
TR
OL
CLO
SE
D &
SW
ITC
H IS
PR
ES
SE
DR
ELA
Y O
NLY
WH
EN
DO
OR
IS
CO
NT
RO
L T
O T
UR
N O
N M
OT
OR
DO
OR
SE
NS
ING
CIR
CU
IT A
LLO
WS
24Vac Ret
24VAC
H1-1
H1-3
9H
410
67
8
1/4
watt
121
00 O
HM
H11L1
FS
-1
H2
-4
H2
-3
Do
or
Se
nse
Re
t
H2
-6
32
41
CA
RD
RE
AD
ER
RE
AD
Y V
EN
D O
PT
ION
12
12
12
12
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
SE
RV
ICE
DO
OR
SW
ITC
HS
WIT
CH
SW
ITC
HS
WIT
CH
JUM
PE
RJU
MP
ER
JUM
PE
RJU
MP
ER
PNK PNK PNK PNK
GRY GRY GRY GRY
BRN BRN BRN BRN
4444H
533
H5
H5
33H
55
1155
115
22227777
866
8866
811
11
11
11
10
9910
10
9910
CO
NN
EC
TIO
NS
TO
CO
NT
RO
LM
AN
UA
L F
OR
PR
OP
ER
RE
AD
ER
IN
ST
ALLA
TIO
NP
LE
AS
E C
ON
SU
LT
CA
RD
21
45
H6
36
75
64
H3
23
1
CO
IN D
RO
P 2
(OP
TIO
NA
L)
SIN
GL
E,
DU
AL
AN
D C
OIN
DR
OP
RE
AD
YC
OIN
DR
OP
VE
ND
OP
TIO
N
SE
RV
ICE
DO
OR
SW
ITC
H
CO
IN V
AU
LT
SW
ITC
H
(OP
TIO
NA
L)
CO
IN D
RO
P 1
PNK
GRY
BRN
12
VE
ND
AP
PL
ICA
TIO
N
WHT4
RED
3H
52
51
WHT
BLU
BLK
BLK
76
89
10
11
5
H6
14
32
67
65
4
DE
TA
ILS
H3
12
3
TM
B1
774
S
70291301 119© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Micro Display Control Troubleshooting
Electric ModelsConnection Diagram
WH
T
H3
H4
SE
RV
ICE
CO
NN
EC
TIO
N
H1
H6
H2
L3
L2
SE
RV
ICE
GR
OU
ND
GN
D
L1T
3
TB
3
L3
HE
AT
ER
H5
EL
EC
TR
IC
HC
1
T1
T2
L1
L2
T3
L3
BLK
/RE
D
HC
2
T1
T2
L1
L2
BLK
/WH
T BLK
230-2
40V
/50H
Z
VLT/WHT
WHT
N.A
.N
ON
E
TH
ER
MIS
TO
R
WHT/ORG
OR
G/B
RN
JUM
PE
RB
RN
/W
HT
CO
NN
EC
TIO
NS
BLU
GR
Y/
BLK
WH
T/
BR
NLT
.
NO
TE
: S
EE
MO
TO
R
JUM
PE
R C
HA
RT
BE
LO
W
FO
R IN
TE
RN
AL
1 3
5
FA
NM
OT
OR
4
VLT
/WH
T
JUM
PE
R
CO
NN
EC
TIO
NS
LT
.B
LU
BLU
/B
LK
NO
TE
: S
EE
MO
TO
R
JUM
PE
R C
HA
RT
BE
LO
W
FO
R IN
TE
RN
AL
MO
TO
R4
1
CY
LIN
DE
R
AIR
FLO
W
CO
M.
WH
T/V
LT
N.C
.
N.O
.
OR
G
SW
ITC
H
ST
OV
E L
IMIT
TH
ER
MO
ST
AT
CA
BIN
ET
LIM
ITT
HE
RM
OS
TA
T
VLT
2 1
VLT
/WH
T
WH
TW
HT
/BLKBLU/
BLK
VLT
/WH
T
WH
T3 1
1322
BLU
/BLK
LT
. B
LU
GR
N/Y
EL
GR
N/Y
EL
VLT
/WH
T
WH
T
82
112
8
WH
T
WH
T/B
RN
BR
N/W
HT
GR
Y/B
LK
2 112
TB
1
LT
. B
LU
BLK
/R
ED
L2
L3L1
BLK
/W
HT
BLK
/RE
D
T1
CO
NT
AC
TO
R
ORG/WHT
14 BRN
13
L1
L2
L3
BRN/RED
T2
T3
MO
TO
R
BLK
/WH
T
BLK
/RE
D
BLK
BLK
/WH
TB
LK
/WH
T
BLK
6 5 42 31
BLK
JUM
PE
R
14
15
13
56
98
12
11
17
10
43
214
13
12
11
10
59
87
12
34
610
59
814
13
12
11
64
32
17
200-2
08V
/60H
Z200V
/50H
Z
SE
RV
ICE
VO
LT
AG
E
240V
/60H
Z
WH
T
BLK
JUM
PE
R
CO
NN
EC
TIO
N
HIG
H
HIG
H
6 2 26
CO
NF
.
MO
TO
R J
UM
PE
R C
HA
RT
BLU
BR
N
BR
N
BLU
WH
T/B
LU
PN
K/B
LK
GR
N/Y
EL
RE
D/W
HT
WH
T/V
LT
WH
T
OR
G/W
HT
BR
N RE
D/B
LU
RE
D PN
K
BR
N/R
ED
BR
N/W
HT
WH
T/B
RN
WHT/VLT
RED/BLK
WHT
BLK
RE
D/W
HT
LIN
TP
AN
EL
SW
ITC
H
CO
M.
N.O
.
SW
ITC
HD
OO
R
CO
M.
RE
D/
WH
TN
.O.
PN
K GR
Y
SW
ITC
H5
MO
DE
LS
5 4 6
5 4 664
CO
IN
CO
M.
CO
IN V
AU
LT
3 1 2
PN
K3 1 2
N.O
.213
GR
Y
69
57
433
47
59
6
13
14
WH
T/B
RN
64
32
11
12
17
89
510
WH
T/B
LU
BR
N/W
HT
BR
N/R
ED
OR
G/W
HT
BR
N
33
WHT
41 1
422
RE
D/B
LU
RE
D
SECONDARY FUSERED
WHT/BRN
95
10
REDBLKBLK
DE
TA
ILS
PRIMARY FUSE
TR
AN
SF
OR
ME
R
56
34
21
BLK/WHT
SE
E
TR
AN
SF
OR
ME
R
JUM
PE
R
12
BLK/WHT
PRIMARY FUSE
035
MO
DE
LS
108 96 74 5
H4
21
WH
T
BLK
321
5
WH
T/B
LU
RE
D/B
LU
SE
CO
ND
AR
Y F
US
E
RE
D/W
HT
RE
D/B
LU
71
23
48
611
12
13
14
WH
T/B
LU
BR
N/R
ED
WH
T/V
LT
OR
G
43
10
713
15
14
RED/BLK
RED/BLK
WHT
WHT
RED/BLK
ORG/BRN
GRN/YEL
RED
111
12
89
6
WH
T
BLK
2
GRY
PNK
1 2
025 &
030
MO
DE
LS
BLK
WH
T
12
12
BLK
CA
RD
RE
AD
ER
MO
DE
LS
BLK
BY
PA
SS
JUM
PE
R
56
14
32
2
240V
JU
MP
ER
MO
DE
LS
230-2
40V
156
23
41
DE
TA
ILS
12
208V
JU
MP
ER
200V
& 2
08V
MO
DE
LS
TR
AN
SF
OR
ME
R
1 2 4 53 7 8 109 46
2D
ET
AIL
CO
NT
RO
L
5
FS-1FS-2
53
2
H2
61
H1
31
GND
76
24
3H
34213 654
H6
5
MD
CH
43 1 19
H5
10 28712 11 46
SE
E V
EN
DA
PP
LIC
AT
ION C
AR
D R
EA
DE
R R
EA
DY
VE
ND
OP
TIO
N
6S
ER
VIC
E D
OO
R
CO
IN V
EN
D O
PT
ION
SIN
GL
E,
DU
AL
AN
D C
OIN
DR
OP
RE
AD
Y
762 4 5H
3
31
PN
K
SW
ITC
H
GR
Y
BR
N
GR
Y
H3
5 76G
RY
BR
N
GR
Y
3 4216
CO
IN D
RO
P 1
(O
PT
ION
AL)
CO
IN D
RO
P 2
(O
PT
ION
AL)
33
WH
T4
33
3 5H
6
41 21
11
7 8 32105 9
BLU
WH
T
22
RE
D
BLK
11
H5
12 11 6
BLK
22
3W
HT
4W
HT
WH
T
RE
D
BLK
RE
D
H6
532 4
PN
K
11
WH
T
BLU
GR
Y
BR
N
7 328
RE
D5 10
BLK
9
3 11 2
VE
ND
AP
PLIC
AT
ION
DE
TA
ILS
BLK
H5
BLK
611
12
2
SW
ITC
HS
ER
VIC
E D
OO
R
CO
NN
EC
TIO
N T
OC
ON
TR
OL
INS
TA
LLA
TIO
NM
AN
UA
L F
OR
PR
OP
ER
PLE
AS
E C
ON
SU
LT
CA
RD
RE
AD
ER
TM
B1
77
9S
120 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Section 7NetMaster Troubleshooting
58. No IR Communication
To reduce the risk of electric shock, fire, explosion, serious injury or death:• Disconnect electric power to the tumble dryer before servicing.• Close gas shut-off valve to gas tumble dryer before servicing.• Close steam valve to steam tumble dryer before servicing.• Never start the tumble dryer with any guards/panels removed.• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumble dryer is properly grounded.W002R1
WARNING
IR Communication
Check the following:
- IR communication disabled by
manual programming.
- Is the IR window on the control
covered or blocked.
- if needed, change control
board.
Check the following:
- low battery on microwand
- is the IR window covered or
blocked on the control.
- if needed replace the electronic
control
- is the IR cap properly attached to
the microwand.
Communication
sequence checks
out.
Attempt to
communicate with
the electronic
control from the
microwand.
Aim microwand
closer and try again.
Is there a response of
any kind from the
electronic control?
Does the control
respond?
Does the electronic
control display E:OF
or -C-?
NO
YES
-C-
"E:OF"
NO
YES
Single and stacked.
Gas and electric heat.
Single and three phase
power supply.
No IR Communication
TMB247STMB247S
70291301 121© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
59. Coins Ignored When Entered
Does the display on the
electronic control
increment properly?
Is connector H5 on the
control firmly seated in
its receptacle?
Is the 3 pin connector
between coin drop and
control connected
correctly?
Are wires exiting coin
drop optical sensor
cracked or broken?
Exit diagnostic
testing and reset
control. (Prompting for vend price)
Reconnect and run
diagnostic test
again.
Reconnect and run
diagnostic test
again.
Replace coin drop
or optic switch.
Replace coin drop.
If problem still exists
then replace the
electronic control.
Start coin drop
diagnostic tests.
YES
NO
YES
YES
NO
YES
NO
NO
Single and stacked
units. Gas and electric
heat. Single and three
phase power supply.
TMB1843S
122 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
60. Control Has No Display
Please see following 2 pages for wiring diagram information.
Is there 24 VAC across H1-1 & H1-3 on
the control?
Replace Electronic Control.
Is there power supplied to the unit?
NO
Is there 120 VAC at input of primary fuses?
Is there 120 VAC at output side of the primary fuses?
Is there 120 VAC across terminals 1 & 2 of
transformer primary?
Plug unit in and start cycle.
Correct wiring between primary fuse and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuse and transformer.
Is there 24 VAC across terminals 1 &
4 of transformer secondary?
Replace transformer.
Is there 24 VAC at the input of the
secondary fuse?
Is there 24 VAC at output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
Correct wiring between control and
secondary fuse.
YES
NONO
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
(8)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
TMB249S
Gas, steam and electric heat.Single and three phase power supply.
TMB249S
70291301 123© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
Control Has No Display (Sheet 1 of 2)
1
6
7
4
5
3
2
124 70291301© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
Control Has No Display (Sheet 2 of 2)
TMB269STMB269S
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NetMaster Troubleshooting
61. Door Open Indicator
Please see following 2 pages for wiring diagram information.
Is there voltage at H2-1 on the Electronic
control?Replace Control.
Is there power supplied to the unit?
NO
Is there 120 VAC at input of primary fuses?
Is there 120 VAC at output side of the primary fuses?
Is there 120 VAC across terminals 1 & 2 of
transformer primary?
Plug unit in and start cycle.
Correct wiring between primary fuses and power
supply.
Replace primary fuse(s).
Correct wiring between primary
fuses and transformer.
Replace transformer.
Is there 24 VAC at the input of the
secondary fuse?
Is there 24 VAC at output side of
secondary fuse?
Correct wiring between secondary
fuse and transformer.
Replace secondary fuse.
NO
NO
NO
NO
NO
NOYES
YES
YES
YES
YES
YES
YES
Is there 24 VAC at N.O. of door
switch?
Is there 24 VAC at N.O. of lint drawer
switch?
Check for proper operation replace if
necessary.
Correct wiring between N.O. on lint drawer and COM on
door switch.
Correct wiring between N.O. and
output of secondary fuse.
Check for proper function of door switch replace if
necessary.
Correct wiring between H2-1 of electronic control and COM of lint drawer switch.
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Reference voltage checks to transformer
neutral.(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
Is there 24 VAC across terminals 2 & 3 of
transformer secondary?
Is there 24 VAC at COM of lint drawer
switch with lint panel closed?
With door closed is there 24 VAC to
COM of door switch?
Gas, steam and electric heat.Single and three phase power supply.
TMB250S
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NetMaster Troubleshooting
Door Open Indicator (Sheet 1 of 2)
1
4
6
7
8 9 10 11
5
3
2
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NetMaster Troubleshooting
Door Open Indicator (Sheet 2 of 2)
TMB270STMB270S
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NetMaster Troubleshooting
62. Motor Will Not Start/Run
Is there voltage across
H2-1 and H2-6 on
the electronic control ?
Motor Start/Run
YES
Replace electronic
Control.
Is there voltage
across H2-4 and H2-6
on the electronic control?
Is there voltage at
terminal 5 of the
motor control relay?
Is there voltage at
terminal 8 of motor
control relay?
Is there voltage across
terminals 1 & 4 of
the fan motor?
Does the fan motor
run?
Is there voltage at
terminal 6 of motor
control relay?
Is there voltage at
terminal 9 of motor
control relay?
Replace
control.
Correct wiring
between terminal 5
and power supply.
Replace motor
control relay.
Correct wiring
between fan motor
and motor control
relay.
Replace fan motor.
Correct wiring
between terminal 6
of motor control
relay and supply.
Replace motor
control relay.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
NO
Note: test conducted with vend
price satisfied and start button
pressed.
Note: tests conducted with vend
price satisfied and start button
pressed.
Correct wiring
between L1, L2 and
power supply.
Replace motor
control relay.
Is the unit equipped
with single phase or
three phase power?
Is there supply voltage
to L1 and L2 of the
motor control relay?
Is there votlage across
L1 & T1 and L2 & T2?
Single phase
NO
YES
YES
NO
3 phase. Also
see note on
next page
Is unit equipped with
single phase or three
phase power supply?
Is there supply voltage
between L2 & L3 of
motor control relay?
Three phase. Also
see note on next
page.
NO
YES
Is there voltage across
terminals L2 & T2 and
L3 & T3?
Correct wiring
between L2, L3 and
supply.
Replace motor
control relay.
YES
NO
Single phase
Single and stacked
units. Gas, electric and
steam heat. Single and
three phase supply.
Motor (cylinder/fan)will not start/run
NORefer to "Door
open" flow chart.
(1)
Is there voltage
across the coil of
the motor control
relay?
Correct wiring to coil
of motor relay .
(2)
YES
NO
(3)
(4)
(5)
(6)
(7)
(8)
(10)
(11)
(12)
(13)
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NetMaster Troubleshooting
62. Motor Will Not Start/Run (continued)
Please see following 4 pages for wiring diagram information.
Is there voltage across
terminals 1 & 4 of
cylinder motor?
Does the cylinder
motor run?
Correct wiring
between cylinder
motor and motor
control relay.
Replace cylinder
motor.
NO
NO
YES
YES
Motors are
operational.
Note: For high voltage three phase supply (380 volts
or higher), the cylinder and fan motors are supplied
by L1, L2, L3 through the motor relay terminals T1,
T2, T3. Make the appropriate adjustments when
doing voltage checks.
(9)
TMB251STMB251S
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NetMaster Troubleshooting
Motor Will Not Start/Run (Sheet 1 of 2)
1
3
2
4
5
70291301 131© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
Motor Will Not Start/Run (Sheet 2 of 2)
4
58
7
6 9
TMB271STMB271S
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NetMaster Troubleshooting
Motor Will Not Start (Sheet 1 of 2)
1
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NetMaster Troubleshooting
Motor Will Not Start (Sheet 2 of 2)
3
2
12
13
10
11
6 9
TMB272STMB272S
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NetMaster Troubleshooting
63. Unit Will Not Heat – Gas
Note: Tests are conducted with unit running and calling for heat.
All voltage checks are referenced to transformer neutral.
Correct wiring between FS-2 and COM of lint drawer.
Is there voltage at FS-2 of NetMaster control?
Is there voltage at FS-1 of NetMaster
control?
Correct wiring between COM of airflow switch and FS-1 of NetMaster
control.
Is there voltage at COM of airflow switch?
Check for proper function of airflow
switch and replace if necessary.
Is there voltage across COM & N.C. terminal
of airflow switch?
Correct wiring between terminal 7
on motor control relay and N.C.
terminal on airflow switch.
Is there voltage at terminal 7 of motor
control relay?
Replace motor control relay.
Is there voltage across terminals 7 & 4 of motor control relay?
Correct wiring between terminal 3
of fan motor centrifugal switch and terminal 4 of motor control relay.
Is there voltage at terminal 3 of fan motor centrifugal
switch?
Replace fan motor.Is there voltage across
terminals 3 & 5 of fan motor centrifugal switch?
Correct wiring between cabinet
limit and terminal 5 of fan motor
centrifugal switch.
Is there voltage to the input side of the
cabinet limit?
Replace cabinet limit.
Is there voltage across cabinet limit?
Correct wiring between stove limit and cabinet limit.
Is there voltage to the input side of the stove
limit?
NO
YES
Is the thermistor
operational?
Replace NetMaster control.
Replace thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
70291301 135© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
63. Unit Will Not Heat – Gas (continued)
Please see following 2 pages for wiring diagram information.
Replace the stove limit.
Is there voltage across the stove limit?
Correct wiring between terminal 2
of ICM and stove limit.
Is there voltage to terminal 2 of
the Ignition Control Module (ICM)?
Replace ICM board.Is there voltage at terminal 1 of ICM
board?
Correct wiring between gas valve
and ICM board.
Is there voltage across the coils of the gas
valve?
Replace gas valve coils or complete
gas valve.
Is there gas flow through the gas valve?
Replace high voltage ignition cable or igniter.
Does the igniter spark?
Unit operational.Is there a flame?
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
(12)
(13)
(14)
(15)
Note: Make sure unit is not in a lock out
condition.
TMB1857STMB1857S
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NetMaster Troubleshooting
Unit Will Not Heat – Gas (Sheet 1 of 2)
1
7
84 6
10 1213
52
3
9
11
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NetMaster Troubleshooting
Unit Will Not Heat – Gas (Sheet 2 of 2)
7
84 6
10 1213
14
5
15
9
11
TMB273STMB273S
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NetMaster Troubleshooting
64. Unit Will Not Heat – Steam
Note: Tests are conducted with unit running
and calling for heat.
All voltage checks are referenced to
transformer neutral.
Correct wiring
between FS-2 and
COM of lint drawer.
Is there voltage on
FS-2 of electronic control?
Is there voltage
on FS-1 of
electronic
control?
Correct wiring
between COM of
airflow switch and
FS-1 of electronic
control.
Is there voltage on
COM of airflow
switch?
Check for proper
function of airflow
switch and replace if
necessary.
Is there voltage across
COM & N.C. terminal
of airflow switch?
Correct wiring
between terminal 7
on motor control
relay and N.C.
terminal on airflow
switch.
Is there voltage on
terminal 7 of motor
control relay?
Replace motor
control relay.
Is there voltage across
terminals 7 & 4 of
motor control relay?
Correct wiring
between terminal 3
of fan motor
centrifugal switch
and terminal 4 of
motor control relay.
Is there voltage on
terminal 3 of fan
motor centrifugal switch?
Replace fan motor.
Is there voltage across
terminals 3 & 5 of
fan motor centrifugal switch?
Correct wiring
between cabinet
limit and terminal "5"
of fan motor
centrifugal switch.
Is there voltage to the
input side of the
cabinet limit?
Replace cabinet
limit.
Is there voltage across
cabinet limit?
Correct wiring
between stove limit
and cabinet limit.
Is there voltage to the
input side of the stove
limit?
NO
YES
Is the
thermistor
operational?
Replace electronic
control.Replace
thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Single and stacked
units.
Unit Will Not Heat (Steam)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
70291301 139© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
64. Unit Will Not Heat – Steam (continued)
Please see following 2 pages for wiring diagram information.
Replace the stove
limit.
Is there voltage across
the stove limit?
Correct wiring
between steam
valve and stove
limit.
Is there voltage across
the coil of the steam valve?
NO
YES
NO
YES
(12)
(13)
Does the steam valve
open allowing steam to flow?
Unit operational.
Replace steam
valve.
No
TMB253S
No Heat
continued.
TMB253S
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NetMaster Troubleshooting
Unit Will Not Heat – Steam (Sheet 1 of 2)
1
7
4 6
10 12
52
3
119
70291301 141© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
Unit Will Not Heat – Steam (Sheet 2 of 2)
7
86
13
TMB274S
TMB274S
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NetMaster Troubleshooting
65. Unit Will Not Heat – Electric
Note: Tests are conducted with unit running
and calling for heat.
All voltage checks are referenced to
transformer neutral.
Correct wiring
between FS-2 and
COM of lint panel
switch.
Is there voltage at
FS-2 of EDC control?
Is there voltage
on FS-1 of
EDC control?
Correct wiring
between COM of
airflow switch and
FS-1 of EDC
control.
Is there voltage at COM
of airflow switch?
Check for proper
function of airflow
switch and replace if
necessary.
Is there voltage across
COM & N.C. terminal
of airflow switch?
Correct wiring
between terminal 7
on motor control
relay and N.C.
terminal on airflow
switch.
Is there voltage at
terminal 14 of motor
control relay?
Replace motor
control relay.
Is there voltage across
terminals 13 & 14 of
motor control relay?
Correct wiring
between terminal 3
of fan motor
centrifugal switch
and terminal 13 of
motor control relay.
Is there voltage at
terminal 3 of fan
motor centrifugal
switch?
Replace fan motor.
Is there voltage across
terminals 3 & 5 of
fan motor centrifugal switch?
Correct wiring
between cabinet
limit and terminal 5
of fan motor
centrifugal switch.
Is there voltage to the
input side of the
cabinet limit?
Replace cabinet
limit.
Is there voltage across
cabinet limit?
Correct wiring
between stove limit
and cabinet limit.
Is there voltage to the
input side of the stove
limit?
NO
YES
Is the
thermistor
operational?
Replace EDC
control.Replace
thermistor.
YES
NONO
YES
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Single and stacked
units.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
70291301 143© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
65. Unit Will Not Heat – Electric (continued)
Please see following 2 pages for wiring diagram information.
Replace the stove
limit.
Is there voltage across
the stove limit?
Correct wiring
between heater
cotactor and stove
limit.
Is there voltage across
the coil(s) of the heater
contactor(s)?
No Heat
continued.
NO
YES
NO
YES
(12)
(13)
Is there voltage to the
L1, L2 and L3
terminals of HC1?
Correct wiring
between HC1 and
Line voltage.
Check elements for
shorts or opens.
Check wires
between contactors
and elements.
Is there voltage across
T1 & T2, T2 & T3 and
T3 & T1?
Check for
proper operation of
contactors, replace
them if necessary.
Is there voltage to the
L1, L2 and L3
terminals of HC2?
YES
NO
Correct wiring
between HC2 and
Line voltage.
(14)
(15)
YES
NO
(16)(17)(18)
NO
YES
NO
YES
Unit is operational
Note: Please make
the oppropriate
adjustments if your
unit is single phase.
TMB1845S
Do all elements
produce heat?
TMB1845S
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NetMaster Troubleshooting
Unit Will Not Heat – Electric (Sheet 1 of 2)
1
14
4
10
2
3
17
16
1815
9
70291301 145© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
NetMaster Troubleshooting
Unit Will Not Heat – Electric (Sheet 2 of 2)
7
84 6
10 1213
5
3
119
TMB275STMB275S