lg air conditioner service manual

LG Room Air ConditionerSERVICE MANUAL

LG

MODELS: ASNW096F1G0ASNW096FE/V/GG0ASNW126F1G0ASNW126FE/V/GG0ASUW126FUGOASNW126F2G0(A12AW2-NF6)ASUW126FUGO(A12AWU-UF6)

CAUTION

website http://www.lgservice.com

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2 Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTSLG Model Name.................................................................................................................................3

Safety Precautions ...........................................................................................................................4

Dimensions .....................................................................................................................................10

Installation.......................................................................................................................................12

Flaring work and connection of piping.........................................................................................15

Checking the drainage and forming the pipings .........................................................................18

Air purging ......................................................................................................................................19

Test running ....................................................................................................................................22

Functions.........................................................................................................................................23

Operation.........................................................................................................................................27

Disassembly ....................................................................................................................................40

Troubleshooting Guide ..................................................................................................................42

Schematic Diagram ........................................................................................................................62

Product Specifications ..................................................................................................................68

Exploded View ................................................................................................................................69

Replacement Parts List ..................................................................................................................71

Service Manual 3

LG Model Name

LG Model Name2006

1 2 - 3 4 5 6 7 8 9 10Code Type Code of Model Meaning

1 Producing Center, A~Z L: Chang-won R22 N: IndiaRefrigerant A: Chang-won R410A Z: Brazil

C: Chang-won R407C D: IndonesiaT: China M: MexicoK: Turkey R22 V: VietnamE: Turkey R410A S: Out SourcingH: Thailand

2 Product Type A~Z S: Split Type Air Conditioner

3 Cooling/Heating/Inverter A~Z C: Cooling onlyH: Heat pumpX: C/O + E/HeaterZ: H/P + E/Heater

V: AC Inverter C/ON: AC Inverter H/PQ: DC Inverter C/OW: DC Inverter H/P

4, 5 Capacity 0~9 Cooling/Heating CapacityEx. "09" 9,000 Btu/h

6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3PhaseA~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase

3: 208-230V/60Hz C: 575V, 50Hz, 3Phase5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase6: 220-240V/50Hz E: 265V, 60Hz7: 110V, 50/60Hz F: 200V, 50/60Hz8: 380-415V/50Hz9: 380-415V/60Hz

7 Chassis A~Z Name of Chassis of Unit

8 Look A~Z Look,Color (Artcool Model)

9 Function A~Z

10 Serial No. 0~9 LG Model De* ARTCOOL COLOR (SF)

velopment Serial No.

Basic ABasic+4Way BPlasma Filter CPlasma Filter+4 Way DTele+LCD ETele+LCD+Nano plasma+4Way FNano Plasma F+(A/changeove)+A/clean+Low A GNano Plasma F+(A/changeove)+A/clean+4way+Low A HTele+LED+4way IInternet JPlasma F+4Way+Oxy generator KNano Plasma F+(A/changeove)+A/clean LNano Plasma F+(A/changeove)+A/clean+4way MNano Plasma F+(A/changeove)+A/clean+PTC NNano Plasma F+(A/changeove)+Autoclean+4way+PTC PNano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC QNegative ION+A/Clean R(Nano)Plasma+Negative ION+A/Clean S4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean TNano Plasma F+4Way+(A/changeove)+A/clean+ U

1 KissE RedV SilverG Gold

Ex.F SF Chassis


Safety Precautions

Safety PrecautionsTo prevent injury to the user or other people and property damage, the following instructions mustbe followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

Installation

Do not use damaged powercords, plugs, or a loose sock-et.

There is risk of fire or electricshock.

For electrical work, contactthe dealer, seller, a qualifiedelectrician, or an AuthorizedService Center.


Always use the power plugand socket with the groundterminal.

There is risk of electric shock.

Install the panel and the coverof control box securely.


Do not modify or extend thepower cord.


Do not install, remove, or re-install the unit by yourself(customer).

There is risk of fire, electricshock, explosion, or injury.

Service Manual 5

Safety Precautions

Operation

Be cautious when unpackingand installing the product.

Sharp edges could cause injury.Be especially careful of the caseedges and the fins on the con-denser and evaporator.

For installation, always con-tact the dealer or anAuthorized Service Center.

There is risk of fire, electricshock, explosion, or injury.

Do not install the product on adefective installation stand.

It may cause injury, accident, ordamage to the product.

Be sure the installation areadoes not deteriorate with age.

If the base collapses, the airconditioner could fall with it,causing property damage, prod-uct failure, and personal injury.

Do not let the air conditionerrun for a long time when thehumidity is very high and adoor or a window is left open.

Moisture may condense and wetor damage furnishings.

Take care to ensure thatpower cords could not bepulled out or damaged duringoperation.

There is risk of fire or electricalshock.

Do not place anything on thepower cord.


Do not turn the air-conditionerON or OFF by plugging orunplugging the power plug.



Safety Precautions

Use a dedicated outlet for thisappliance.


Grasp the plug to remove thecord from the outlet. Do nottouch it with wet hands.


Do not place a heater or otherappliances near the powercable.

There is risk of fire and electricshock.

Do not allow water to run intoelectric parts.

It may cause There is risk offire, failure of the product, orelectric shock.

Do not store or use flammablegas or combustibles near theair conditioner.

There is risk of fire or failure ofproduct.

Do not use the product in atightly closed space for a longtime.

Oxygen deficiency could occur.

Wax Thinner

When flammable gas leaks,turn off the gas and open awindow for ventilation beforeturn the product on. DO NOTuse the telephone or turnswitches on or off.

There is risk of explosion or fire.

Unplug the unit if strangesounds, odors, or smokecomes from it.

There is risk of electrical shockor fire

Stop operation and close thewindow in storm or hurricane.If possible, remove the airconditioner from the windowbefore the hurricane arrives.

There is risk of property dam-age, failure of product, or elec-tric shock.

Service Manual 7

Safety Precautions

Installation

Do not open the inlet grill ofthe product during operation.(Do not touch the electrostaticfilter, if the unit is soequipped.)

There is risk of physical injury,electric shock, or product failure.

When the product is soaked(flooded or submerged), con-tact an Authorized ServiceCenter.

There is risk of fire or eletricshock.

Ventilate the product fromtime to time when operating ittogether with a stove, etc.


Unplug the appliance beforeperforming cleaning or main-tenance.

There is risk of electrical shock.

When the product is not beused for a long time, disconnectthe power supply plug or turnoff the breaker.

There is risk of product damageor failure, or unintended opera-tion.

Take care to ensure thatnobody could step on or fallonto the outdoor unit.

This could result in personalinjury and product damage.

Always check for gas (refriger-ant) leakage after installationor repair of product.

Low refrigerant levels maycause failure of product.

Install the drain hose toensure that water is drainedaway properly.

A bad connection may causewater leakage.

Keep level even wheninstalling the product.

To avoid vibration or water leak-age.

90


Safety Precautions

Operation

Do not install the productwhere the noise or hot airfrom the outdoor unit coulddamage the neighborhoods.

It may cause a problem for yourneighbors.

Use two or more people to liftand transport the air condi-tioner.

Avoid personal injury.

Do not install the productwhere it will be exposed tosea wind (salt spray) directly.

It may cause corrosion on theproduct. Corrosion, particularlyon the condenser and evapora-tor fins, could cause productmalfunction or inefficient opera-tion.

Do not direct airflow at roomoccupants. (Don't sit in thedraft.)

This could damage your health.

Do not use the product forspecial purposes, such aspreserving foods, works ofart, etc. It is a consumer airconditioner, not a precisionrefrigeration system.

There is risk of damage or lossof property.

Do not block the inlet or outletof air flow.

It may cause product failure.

Use a soft cloth to clean. Donot use harsh detergents, sol-vents, etc.

There is risk of fire, electricshock, or damage to the plasticparts of the product.

Do not touch the metal partsof the product when removingthe air filter. They are verysharp!

There is risk of personal injury.

Do not step on or put anytingon the product. (outdoorunits)

There is risk of personal injuryand failure of product.

Service Manual 9

Safety Precautions

Always insert the filter secure-ly. Clean the filter every twoweeks or more often if neces-sary.

A dirty filter reduces the efficien-cy of the air conditioner andcould cause product malfunctionor damage.

Do not insert hands or otherobjects through the air inlet oroutlet while the air conditioneris plugged in.

There are sharp and movingparts that could cause personalinjury.

Do not drink the water drainedfrom the unit.

It is not sanitary and couldcause serious health issues.

Use a firm stool or ladder when cleaning ormaintaining the air conditioner.

Be careful and avoid personal injury.

Replace the all batteries in the remote controlwith new ones of the same type. Do not mixold and new batteries or different types of bat-teries.

There is risk of fire or explosion

Do not recharge or disassemble the batteries.Do not dispose of batteries in a fire.

They may burn or explode.

If the liquid from the batteries gets onto yourskin or clothes, wash it well with clean water.Do not use the remote if the batteries haveleaked.

The chemicals in batteries could cause burns orother health hazards.

Disuse


Dimensions

Dimensions

Pipe Hole Fix Hole

Hanger Hole

H

W D

W mm 600

H mm 600

D mm 146(143)

Model

DimensionINDOOR

Indoor Unit

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to theair conditioner.

This symbol indicates special notes.NOTICE

Symbols Used in this Manual

Service Manual 11

W L2

L3

L1 DH

L4

L5Gas side

(3-way valve)

Liquid side(2-way valve)

MODELDIM unit

W mm 770H mm 545

D mm 245

L1 mm 285L2 mm 64L3 mm 518L4 mm 10L5 mm 100

Dimensions

Outdoor Unit

OUTDOOR


InstallationInstallation

Indoor unit Do not have any heat or steam near the unit. Select a place where there are no obstacles in

front of the unit. Make sure that condensation drainage can be

conveniently routed away.Do not install near a doorway.

Use a stud finder to locate studs to preventunnecessary damage to the wall.

Outdoor unit If an awning is built over the unit to prevent direct sunlight or

rain exposure, make sure that heat radiation from the con-denser is not restricted.

Ensure that the space around the back and sides is morethan 30cm. The front of the unit should have more than70cm of space.

Do not place animals and plants in the path of the warm air. Take the weight of the air conditioner into account and select

a place where noise and vibration are minimum. Select a place where the warm air and noise from the air

conditioner do not disturb neighbors.

Rooftop Installations: If the outdoor unit is installed on a roof structure,

be sure to level the unit. Ensure the roof struc-ture and anchoring method are adequate for theunit location.

Consult local codes regarding rooftop mounting.

More than 20cmMore than 50cm

More than 1.5mMore

than 50cm

Capacity is based on standard length and maxi-mum allowance length is on the basis of reliability.

Oil trap should be installed every 5~7 meters.

Pipe SizeCapacity(Btu/h) GAS LIQUID

Max. LengthA (m)

AdditionalRefrigerant

(g/m)Max.

ElevationB (m)

StandardLength

(m)5k~14k

3/8"(9.52) 1/4"(6.35) 4 or 7.5 7 15 201/2"(12.7) 1/4"(6.35) 4 or 7.5 7 15 201/2"(12.7) 1/4"(6.35) 4 or 7.5 15 30 20

18k~28k 5/8"(15.88) 1/4"(6.35) 4 or 7.5 15 30 205/8"(15.88) 3/8"(9.52) 4 or 7.5 15 30 30

30k~38k5/8"(15.88) 3/8"(9.52) 7.5 15 30 303/4"(19.05) 3/8"(9.52) 7.5 15 30 50

If case more than 5m

Outdoor unit

Indoor unit

A

BOutdoor unit

Indoor unit

A

B

AOil trap

Outdoor unit

Indoor unitB

If piping length is more than 5m

Selection of the Best Location

Piping Length and Elevation

More than 30cm More than 30cm

More than 60cm

More than 60cm

More than 70cm

Service Manual 13

Installation

Preparing Work for InstallationOpen panel front1. Pull the upper part of the front panel.2. Lift up the panel.3. To detach the front panel, remove the two screws at the lower part.4. Detach the front panel from the body. 5. To detach the panel, disconnect the connector at the upper part.

Cover pipe and cover side remove1. Please remove the screw of the center tuning cover.2. Pull up the side cover of desired connecting direction, then

cover side is separated.3. Pick the pipe hole of the side cover.

CAUTION: After removing the pipe hole, cutthe burr for safety.

When making pipe path through rearwall, you dont need to pick the pipe hole.

NOTICE

Drain hose junction1. Remove the rubber stopple in the desired drain direc-

tion.2. Insert drain hose into the handle of drain pan, and

join drain hose and connecting hose according to thefigure by.

Panel Front Connector

Side cover

Pipe hole

Only thedesired direction

rubber cap

Only thedesired direction

Connectingpart

Adhesive

Drainhose


Installation

Fixing Indoor Unit

Drill the piping hole with a 50mm hole core drill.Drill the piping hole at either the right or the left withthe hole slightly slanted to the outdoor side.

Drill a Hole in the Wall

5-7m

m(0.

2~0.3

")

IndoorWALL

Outdoor

Plastic anchors

INSTALLATION GUIDE MAP

10mm INSTALLATION GU

INSTAIIATION GUIDE MAP

Plastic anchors



Hanger hole(Rear side of the product)

3. Make a hole with a diameter of 6mm and depth of 30-35mm by piercing a screw point.

5. Drive the fore plastic anchors into drilled points.

7. Hang the hole of product at the upper screws, and remove the map. (Falling attention)

9. Check the fixed product with light power.

1. Attach an Installation guide map on the desired surface.

2. Look at suited horizon by horizontal meter on the horizontal setting line, and fix lightly the map by adhesive tape.

4. Drill the pierted part as a diameter of 50mm for connecting piping. (In case of piercing rear surface)

6. First, Drive the two points of the upper parts by screws. (Leave 10mm for hanging the product)

8. Drive the lower parts after facing the hole of product with plastic anchors, and fix completely the upper screws.

10. In case of nothing wrong, connect the pipe and the wire. (Refer to installation manual)

HorizontalityINSTALLATION GUIDE MAP

Service Manual 15

Flaring work and connection of piping

Flaring work and connection of pipingFlaring work

Flaring workMain cause for refrigerant leakage is due to defect in theflaring work. Carry out correct flaring work using the follow-ing procedure.

Cut the pipes and the cable. Use the piping kit accessory or pipes purchased locally. Measure the distance between the indoor and the outdoor unit. Cut the pipes a little longer than the measured distance. Cut the cable 1.5m longer than the pipe length.

Check Compare the flared work with figure below. If flare is noted to be defective, cut off the flared sec-

tion and re-flare it.

Preparing the indoor unit's piping and drain hose for instal-lation through the wall.

Route the indoor tubing and the drain hose in the directionof rear left or right

Tape the tubing, drain hose and the connecting cable. Besure that the drain hose is located at the lowest side of thebundle. Locating at the upper side can cause drain pan tooverflow inside the unit.

Carry out flaring work using flaring tool as shown below.

Burr removal Completely remove all burrs from the cut cross section of

pipe/tube. Put the end of the copper tube/pipe in a downward direc-

tion as you remove burrs in order to avoid dropping burrsinto the tubing.

Putting nut on Remove flare nuts attached to indoor and outdoor unit,

then put them on pipe/tube having completed burr removal.(not possible to put them on after flaring work)

Flaring work Firmly hold copper pipe in a die in the dimension shown in

the table above.

Copperpipe 90 Slanted Uneven Rough

Bar

Copper pipeClamp handle Red arrow mark

Cone

Yoke

HandleBar"A

"

Inclined

Inside is shiny without scratchesSmooth all round

Even lengthall round

Surfacedamaged

Cracked Uneventhickness

= Improper flaring =

PipeReamer

Point down

Flare nut

Copper tube

Drain hose

mm inch mm6.35 1/4 0~0.59.52 3/8 0~0.512.7 1/2 0~0.515.88 5/8 0~1.019.05 3/4 1.0~1.3

Outside diameter A

Connection of piping -- Indoor



Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

Indoor unit tubing Flare nut Pipes

Vinyl tape(narrow)Adhesive

Drain pipe

Indoor unit drain hose

Plastic bands Insulation material

Vinyl tape(narrow)

Connectionpipe

Connecting cable

Vinyl tape(wide)

Wrap with vinyl tape

Indoor unit pipe

PipeConnecting the pipings to the indoor unit anddrain hose to drain pipe. Align the center of the pipes and sufficiently tighten

the flare nut by hand.

Tighten the flare nut with a wrench.

When extending the drain hose at the indoor unit, install thedrain pipe.

Wrap the insulation material around the con-necting portion.Overlap the connection pipe insulation material and theindoor unit pipe insulation material. Bind them together withvinyl tape so that there is no gap.

Wrap the area which accommodates the rear piping hous-ing section with vinyl tape.

mm inch kg.m6.35 1/4 1.89.52 3/8 4.212.7 1/2 5.515.88 5/8 6.619.05 3/4 6.6

Outside diameter Torque

CAUTION: If the drain hose is routed insidethe room, insulate the hose with an insulationmaterial* so that dripping from"sweating"(condensation) will not damage fur-niture or floors.*Foamed polyethylene or equivalent is recom-mended.

Connectingcable

Gas side piping

Liquid side pipingDrain hose

Loop

CAUTION: Installation InformationFor right piping. Follow the instructionbelow.

Good case Press on the upper side of clamp and unfold the tub-

ing to downward slowly.

Service Manual 17


Bad case Following bending type from left to right may cause

damage to the turbing.

Align the center of the pipings and sufficientlytighten the flare nut by hand.

Finally, tighten the flare nut with torque wrenchuntil the wrench clicks.

When tightening the flare nut with torque wrench, ensurethe direction for tightening follows the arrow on the wrench.

Connection of the pipes-Outdoor

mm inch kg.m6.35 1/4 1.89.52 3/8 4.212.7 1/2 5.515.88 5/8 6.619.05 3/4 6.6

Outside diameter Torque

Outdoor unit Gas side piping(Bigger diameter)

Liquid sidepiping(Smallerdiameter)

Torque wrench


Checking the drainage and forming the pipings

Checking the drainage and forming the pipingsChecking the drainage Form the piping

To check the drainage. Pour a glass of water on the evaporator. Ensure the water flows through the drain hose of the indoor

unit without any leakage and goes out the drain exit.

Form the piping by wrapping the connectingportion of the indoor unit with insulation mate-rial and secure it with two kinds of vinyl tapes. If you want to connect an additional drain hose, the end of

the drain outlet should be routed above the ground. Securethe drain hose appropriately.

In cases where the outdoor unit is installedbelow the indoor unit perform the following. Tape the piping, drain hose and connecting cable from

down to up. Secure the tapped piping along the exterior wall using sad-

dle or equivalent.

In cases where the Outdoor unit is installedabove the Indoor unit perform the following. Tape the piping and connecting cable from down to up. Secure the taped piping along the exterior wall. Form a trap

to prevent water entering the room. Fix the piping onto the wall by saddle or equivalent.

Drain piping The drain hose should point downward for easy drain flow.

Do not make drain piping.

Downward slope

Do not raise Accumulateddrain waterTip of drain hose dipped in water

Air

WavingWaterleakageWaterleakage Ditch

Less than 50mm gap

Waterleakage

Taping

Drain hose

PipingsConnecting cable

Trap is required to prevent waterfrom entering electrical parts.

Seal small openingsaround pipings with agum type sealer.

Seal a small opening around the pipings with gum type sealer.

Trap

Trap

Service Manual 19

Air purging

Air and moisture remaining in the refrigerant system haveundesirable effects as indicated below. Pressure in the system rises. Operating current rises. Cooling(or heating) efficiency drops. Moisture in the refrigerant circuit may freeze and block cap-

illary tubing. Water may lead to corrosion of parts in the refrigeration

system.Therefore, the indoor unit and tubing between the indoor andoutdoor unit must be leak tested and evacuated to removeany noncondensables and moisture from the system.

Do a leak test of all joints of the tubing(both indoor and out-door) and both gas and liquid side service valves.Bubbles indicate a leak. Be sure to wipe off the soap with aclean cloth.

After the system is found to be free of leaks, relieve thenitrogen pressure by loosening the charge hose connectorat the nitrogen cylinder. When the system pressure isreduced to normal, disconnect the hose from the cylinder.

Preparation Check that each tube(both liquid and gas side tubes)

between the indoor and outdoor units have been properlyconnected and all wiring for the test run has been complet-ed. Remove the service valve caps from both the gas andthe liquid side on the outdoor unit. Note that both the liquidand the gas side service valves on the outdoor unit arekept closed at this stage.

Leak test Connect the manifold valve(with pressure gauges) and dry

nitrogen gas cylinder to this service port with charge hoses.

Pressurize the system to no more than 150 P.S.I.G. withdry nitrogen gas and close the cylinder valve when thegauge reading reached 150 P.S.I.G. Next, test for leakswith liquid soap.

Air PurgingAir purging

Air purging with vacuum pump

Be sure to use a manifold valve for air purging. If it is notavailable, use a stop valve for this purpose. The "Hi" knobof the manifold valve must always be kept close.

To avoid nitrogen entering the refrigerant system in a liquidstate, the top of the cylinder must be higher than its bottomwhen you pressurize the system. Usually, the cylinder isused in a vertical standing position.

Lo Hi

Indoor unit

Outdoor unit

Manifold valve

Charge hose

Nitrogen gascylinder(in verticalstanding position)

Pressure gauge


Air purging

Evacuation Connect the charge hose end described in the preceding

steps to the vacuum pump to evacuate the tubing andindoor unit.Confirm the "Lo" knob of the manifold valve is open. Then,run the vacuum pump.The operation time for evacuation varies with tubing lengthand capacity of the pump. The following table shows thetime required for evacuation.

When the desired vacuum is reached, close the "Lo" knobof the manifold valve and stop the vacuum pump.

Finishing the job With a service valve wrench, turn the valve stem of liquid

side valve counter-clockwise to fully open the valve. Turn the valve stem of gas side valve counter-clockwise to

fully open the valve. Loosen the charge hose connected to the gas side service

port slightly to release the pressure, then remove the hose. Replace the flare nut and its bonnet on the gas side service

port and fasten the flare nut securely with an adjustablewrench. This process is very important to prevent leakagefrom the system.

Replace the valve caps at both gas and liquid side servicevalves and fasten them tight.

This completes air purging with a vacuum pump. The air conditioner is now ready to test run.

(1) Remove the caps from the 2-way and 3-way valves.(2) Remove the service-port cap from the 3-way valve.(3) To open the 2-way valve turn the valve stem counter-

clockwise approximately 90, wait for about 2~3 sec, andclose it.

(4) Apply a soap water or a liquid neutral detergent on theindoor unit connection or outdoor unit connections by asoft brush to check for leakage of the connecting pointsof the piping.

(5) If bubbles come out, the pipes have leakage.

Soap water method

Gas side

Liquid side

CapHexagonal wrench

2-way valve(Open)

3-way valve(Close)

Required time for evacuation when 30 gal/h vacuumpump is used

10 min. or more 15 min. or more

If tubing length is less than 10m (33 ft) if tubing length is longer than 10m (33 ft)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Vacuum pump

Pressure gauge

Open Close

Service Manual 21

Air purging

1. First, Check the side cover assembly exactly, and fixthe power cord in the bottom groove of cover sideleft.

2. Assemble connecting lead wire with controller, fix theupper part of panel front, and match the lower part ofpanel front.

3. Screw up panel front, and suspend the hook of panelfront in the groove.

Panel FrontConnector

Panel Front Assembly


Test running

Test Running1. Check that all tubing and wiring have been properly

connected.2. Check that the gas and liquid side service valves are

fully open.

Prepare remote controller1. Remove the battery cover

by pulling it according to thearrow direction.

2. Insert new batteries making sure that the (+) and () of battery are installed correctly.

3. Reattach the cover bypushing it back into position.

Use 2 AAA(1.5volt) batteries. Do not userechargeable batteries. Remove the batteries from the remote

control if the system is not going to beused for a long time.

Settlement of outdoor unit Anchor the outdoor unit with a bolt and

nut(10mm) tightly and horizontally on a concreteor rigid mount.

When installing on the wall, roof or rooftop, anchorthe mounting base securely with a nail or wireassuming the influence of wind and earthquake.

In the case when the vibration of the unit is con-veyed to the hose, secure the unit with an anti-vibration bushing.

Evaluation of the performanceOperate unit for 15~20 minutes, then check the systemrefrigerant charge:1. Measure the pressure of the gas side service valve.2. Measure the temperature of the intake and discharge

of air.3. Ensure the difference between the intake tempera-

ture and the discharge is more than 8C(46F)(Cooling) or (Heating).

4. For reference; the gas side pressure of optimumcondition is as below.(Cooling)

If the actual pressure is higher than shown,the system is most likely over-charged, andcharge should be removed. If the actual pres-sure are lower than shown, the system ismost likely undercharged, and charge shouldbe added.

The air conditioner is now ready for use.

NOTICE

NOTICE

Bolt

Tubing connection

Discharge temperature

Discharge airIntake temperature

R-22 35C (95F) 4~5kg/cm2G(56.8~71.0 P.S.I.G.)R-410A 35C (95F) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)

Outside ambientTEMP.Refrigerant

The pressure of the gas side service valve.

This is performed when the unit is to be relocatedor the refrigerant circuit is serviced.Pump Down means collecting all refrigerant in theoutdoor unit without loss in refrigerant gas.CAUTION:Be sure to perform Pump Down procedure with theunit cooling mode.Pump Down Procedure1. Connect a low-pressure gauge manifold hose to

the charge port on the gas side service valve.2. Open the gas side service valve halfway and purge

the air from the manifold hose using the refrigerantgas.

3. Close the liquid side service valve(all the way in).4. Turn on the unit's operating switch and start the

cooling operation.5. When the low-pressure gauge reading becomes 1

to 0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close thegas side valve stem and then quickly turn off theunit. At that time, Pump Down has been completedand all refrigerant gas will have been collected inthe outdoor unit.

PUMP DOWN

Service Manual 23

Functions

Functions

Room temperature sensor. (Thermistor) Pipe temperature sensor. (Thermistor)

Maintain the room temperature in accordance with the Setting Temp.

Indoor fan is delayed for 5 sec at the starting.

Restarting is for approx. 2 minutes.

Super High, High, Mid, Low

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting the Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Pre-Heating Control(Comp)

Cooling Mode Operation

Healty dehumidification Mode Operation

Heating Mode Operation

Jet Cool Mode Operation

Jet Heat Mode Operation

Energy Saving Cooling Mode Operation


Functions

Both the indoor and outdoor fan stops during defrosting.

Defrost(Deice) Control (Heating)

Hot-start Control (Heating)

Heater (Optional)

NEO Plasma Purification Operation(Optional)

Auto Clean(Optional)

Energy-Saving Control(Optional)

Auto Changeover(Heating)

The fan is switched to S-low(Cooling), low(Heating) speed. The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

The fan is switched to intermittent or irregular operation The fan speed is automatically switched from high to low speed.

The louver can be set at the desired position or swing up and down automatically.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

The function will be operated while in any operation mode with selecting the function. The function is to be stopped while it isoperating with selecting the function.

The indoor fan stops until the evaporator pipe temperature will be reached at 30C.

Service Manual 25

Functions

If power is on, it will operate to chage capacitor on controller and power relay will operate after about 2~5sec.

The active power filter is designed to correct power factor(cos ) and to regulate DC link voltage. It will be operated PFC circuit when the compressor freq. is over 30Hz and wattage is over 450 watt.

The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,heat-sink temp., target freq., owing to CT.

It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.

It is only operated in the heating operation mode except defrosting operation.

High speed- Although fan motor speed is middle, it will change high speed in case of below AC193V, over 45C of

outdoor temp., and over fc, fh of comp. Freq. Middle speed

- Nomal mode Low speed

- Although fan motor speed is middle, it will change Low speed in case of over AC 270V, over 21C(Heating Mode) of outdoor temp. below 24C (Cooling Mode) of outdoor temp.

When the temp. of power module increases to 85C, controller decreases Freq. of Comp.

Outdoor Unit

Power Relay Control

Active Power Filter Control(PSC)

Comp. Freq. Control

OverheatIng. Protection(Power Module)

Freq. Speed Control(Up/Down Speed)

Total Current Control (Over Current Protection)

DC Peak Current Control

4 way Valve Control

Outdoor Fan Motor Control

Discharge Pipe Temp. Control

Low Ambient

Comp. Torque Control

Over Heating Protection (Comp.)


Healthy Dehumidification Operation Mode.( )

Remote Control

Operation ON/OFF

Reset

Operation Mode Selection

Temperature Setting

Timer Selection

Timer Setting

JET COOL

Timer Cancel

Sleep Operation

Airflow Direction Control

(Cooling model only) (Heating model only)

TEMPERATURE LOW HIGH

Cooling Operation Mode.( )Heating Operation Mode.( )Auto Operation Mode.( )

Room, Temperature Display

Setting the Time or Timer

PLASMA(Optional)

ON OFF

SET

PLASMA

CANCEL

(Optional)Auto Clean

Fan Speed Selection

(Low) (Med) (High) (CHAOS)

Power Save Cooling Button

AUTO CLEAN

: (High:39C Low:11C)

: OFF, ON, OFF ON

: Cancel Sleep Mode, Timer ON or Timer OFF

: 1, 2, 3, 4, 5, 6, 7, Off Timer

Cooling Down to 18CUp to 30C

Heating Down to 16CUp to 30C

Functions

Service Manual 27

Operation

Function of Controls

Operation

DISPLAY1) C/O Model Operation Indicator

ON while in appliance operation, OFF while in appliance pause. Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)

Timer Indicator ON while in timer mode (on/off), OFF when timer mode is completed or canceled.

Comp. Running Incidator While in appliance operation, ON while in outdoor unit compressor running, OFF while in compressor off.

2) H/P ModelOperation Indicator

ON while in appliance operation, OFF while in appliance pause. Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)

Timer Indicator ON while in timer mode (on/off), OFF when timer mode is completed or canceled.

Defrost Indicator OFF except when hot start during heating mode operation or while in defrost control.

Sleep Indicator On during sleep reservation, Off in case of cancel of sleep reservation.

If the indoor pipe temperaure is below 0C in 7 min. after the compressor operates without pause while incooling cycle operation mode, compressor, outdoor fan are turned off.

When indoor pipe temp. is 7C or higher after 2 min pause of compressor compressor, outdoor fan is turned on according to the condition of the room temperature.

Comp. freeComp. Step 4Comp. Step 2

Comp. off0C3C6C 7C

Indoor pipetemp.

Protection of the evaporator pipe from frosting


Operation

Cooling mode operation Operating frequency of compressor depend on the difference of the temperature.

(= intake air Temp.- Compressor off Temp. Compressor off temp.= setting temp. -0.5C

on temp. = setting temp. +0.5C If compressor operates at some operating frequency, the operating frequency of compressor cannot be

changed within 30 seconds. Condition of compressor turned off

- When intake air temperature stay at the temperature between setting temp. -0.5C and setting temp. -1.0C for 3 minutes continuously.

- When intake air temperature reaches below the temperature of setting temp. -1.0C. Compressor 2 minutes delay

- The compressor can restart minimum 2 minutes later after compressor off.

Temp. differences Comp. Operating frequencyover 2.5C Step 72.0~2.49C Step 61.5~1.99C Step 51.0~1.49C Step 40.5~0.99C Step 30.0~0.49C Step 2

0.5~0C Step 1

[The operating freq. step of comp.]

[The targeting operating freq. of comp. each model]

Model

AS-W096F1/E/V/GG0 25 35 40 53 64 73 82AS-W126F1/2/E/V/GG0 25 35 40 53 64 73 82

Comp. Operating frequencyStep 1 Step 2 Step 3 Step 4 Step 5(Fc) Step 6 Step 7

Healthy Dehumidification mode operation When the dehumidification operation is set by the remote controller the intake air temperature is detected and

the setting temp. is automatically set according to the intake air temperature.

When intake air temp reaches above the temp of setting +1.0C, condition of compressor same as coolingmode operation.

When intake air temperature reaches bolow the temp of setting 1.0C, compressor operate step1~step3 andindoor fan speed repeatly operate low or stop.

Intake air Temp.

26C intake air temp.

24C intake air temp.< 26C

18C < intake air temp. < 24C

intake air temp. 18C

Setting Temp.

25C

intake air temp. -1C

intake air temp. -0.5C

18C

Service Manual 29

Operation

Operating frequency of compressor depend on the difference of the temperature( = desired temp. indoor temp. )

Compressor off temp. = setting temp. + 4 Con temp. = setting temp. + 2 C

If compressor operates at some operation frequency, the operating frequency of compressor cannot bechanged within 30 seconds.

Condition of compressor turned off- When intake air temperature reaches +3C above the setting temperature.

Condition of indoor fan turned off- While in compressor on:indoor pipe temp. < 30C

While in defrost control, between the indoor and outdoor fans are turned off. Compressor 2minutes delay

- After compressor off, the compressor can restart minimum 2 minutes later.

Temp. differences4.5~4.99C4.0~4.49C3.5~3.99C3.0~3.49C2.5~2.99C2.0~2.49C

~2.0C

Comp. Operating frequencyStep 1Step 2Step 3Step 4Step 5Step 6Step 7

[ The operating freq. step of comp]

Heating mode operation

While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in theother mode operation(cooling, dehumidification, ventilation), the Jet Cool mode is operated.

In the Jet Cool mode, the indoor fan is operated super-high speed for 30 min. at cooling mode operation. In the Jet Cool mode, the room temperature is controlled to the setting temperature, 18C. When the sleep timer mode input while the Jet Cool mode operation, the Jet Cool mode has the priority. When the Jet Cool key is input, the upper/lower vane is reset to those of the initial cooling mode and then

operated in order that the air outflow could reach further.

Jet cool mode operation

[The targeting operating freq. of comp. each model]

Model

AS-W096F1/E/V/GG0 35 38 48 63 71 85 94AS-W126F1/2/E/V/GG0 35 38 48 63 71 85 94

Comp. Operating frequencyStep 1 Step 2 Step 3 Step 4 Step 5(Fh) Step 6 Step 7


Operation

While in cooling mode or Fuzzy operation, the Jet Heat key cannot be input. When it is input while in theHeating mode operation (dehumidification), the Jet Heat mode is operated.

In the Jet Heat mode, the indoor fan is operated super-high speed for 60 min. at Heating mode operation. In the Jet Heat mode, the room temperature is controlled to the setting temperature, 30C. When the sleep timer mode input while the Jet Heat mode operation, the Jet Heat mode has the priority. When the Jet Heat key is input, the upper/lower vane is reset to those of the initial Jet heating mode and

then operated in order that the air outflow could reach under flow.

CLOSED

Mode 8Mode 7Mode 6Mode 5Mode 4Mode 3Mode 2

Mode 1

OPEN

65

8

20

Jet heat mode operation

1. Chaos swing mode By the Chaos swing key input, the upper/lower vane automatically operates with the Chaos swing or it is

fixed to the desired direction.

Swing mode

Service Manual 31

Operation

1. Sleep timer operation for cooling cycle While in cooling mode operation, 30 min. later since the start of the sleep timer, the setting temperature

increase by 1C. After another 30min. elapse, it increases by 1C again.

2. Sleep timer operation for heating cycle While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature

decrease by 1C. After another 60min. elapse, it decreases by 1C again.

Setting temp. (C)

1.0C up

1.0C up

Cooling ON temp.(Setting temp. +0.5C)

Cooling OFF temp.(Setting temp. -0.5C)

0.5 1 Sleep time (hr)

Setting temp. (C)Heating ON temp.(Setting temp)

Heating OFF temp.(Setting temp. +3.0C)

1 2 Sleep time (hr)

1.0C down

1.0C down

When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation, theoperation of the appliance stops.

When the appliance is on pause, the sleep timer mode cannot be input.

Sleep timer operation


Operation

Auto restarting operation

Forced operation

Test Operation

When the power is restarted after a sudden power failure while in appliance operation, the mode before thepower failure is kept on the memory and the appliance automatically operates in the mode on the memory.

Operation mode that is kept on the memory- State of operation ON/OFF- Operation mode/setting temp./selected airflow speed- Sleep timer mode/remaining time of sleep timer- Chaos Swing- Plasma Operation

To operate the appliance by force in case that the remote control is lost, the forced operation selection switchis on the main unit of the appliance to operate the appliance in the standard conditions.

The operation condition is set according to the outdoor temp. and intake air temperature as follows.

The unit select before operating mode in 3 hours.

Press the Tact Switch for compulsory operation of the main body for 3 seconds in order to operate in the trialoperation mode. - Operation mode: Cooling- Indoor pan: High speed- COMP frequency: Step 5- COMP turns off after operating for about 18 minutes irrespective of indoor temperature.

Indoor temp.

Over 23C

21~23C

below 21C

Setting temp.

22C

23C

24C

Setting speed ofindoor fan

High speed

Operating Mode

Cooling

Healthy Dehumidification

Heating

Service Manual 33

Operation

Power relay turns on 1 second later after the power is input to the outdoor unit. Control sequence : power on PTC operating power relay on

CT1 control If the operating current reaches I1, the operating frequency of the compressor decrease. After decreasing the operating frequency by 1step, if operating current is below I1 for 60 seconds continuous-

ly, the operating frequency of compressor increase by 1step.

CT2 control If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the

compressor restart again. If CT2 occurs 5 times within 1hour, the appliance turn off and blinks 7 times(ERROR CODE7).

I1:Current of operating frequency downI2: Current of compressor cut off

cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.

Control table

DC Peak Current Error by a fault signal of IPM If the operating current of IPM reaches 35A 3A, the compressor stop instantly. If DC PEAK occurs 5 times within 1 hour, the appliance turns off and blinks 6 times(ERROR CODE6).

DC Peak Current Error by the compressor lock If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the

appliance turns off and blinks 6 times(ERROR CODE6). DC Peak Current Error due to High Outdoor Pipe TH

If the outdoor pipe TH is over 65 C for 5 times within an hour while the compressor is operating, the appli-ance turns off and blinks 6 times (ERROR CODE6).

Power relay control

Protection from total current control

Protection from DC Peak Current

AS-W096F1/E/V/GG0 7.0A 8.5A 7.5A 9.0A 10.0AAS-W126F1/2/E/V/GG0 7.0A 8.5A 7.5A 9.0A 10.0A

I1

Cooling Heating Cooling HeatingOutdoor temp 38C Outdoor temp < 38C I2Model


Operation

If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly. It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.) The LED blinks 4 times, when the thermistor is open or short, and when the temperature is over Toff.

If the temperature of the discharge pipe of compressor reaches over 130C or below -30C the compressorstop instantly.

It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to belowFig.)

Temperature range by COMP SPEC varies by 10C.

Portection from overheating of power module

Portection from overheating of compressor

T off C

T2 C

Heat Sink Temp.

T1 C

T on C

COMPFreq. Free OFF FreeFc-1 Fc-1Fc-2 Fc-2

T = (T off - T on)T1 = T on + TT2 = T on + 2 * T

D-Pipe Temp.

COMP Freq. Free FreeFh min OFFFc-1 Fc-1Fc-2 Fc-2

T = (T off - T2)/2T1 = T2 - 2 * TT3 = T2 + TT off C

T2 C

T3 C

T1 C

-13 C

1 AS-W096F1/E/V/GG0 85 952 AS-W126F1/E/V/GG0 85 95

No. MODEL T on T off

1 AS-W096F1/E/V/GG0 100 1102 AS-W126F1/E/V/GG0 100 110

No. MODEL T on T off

Service Manual 35

Operation

While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

Defrosting control is available 40 minutes later since heating cycle started and the difference of the pipe tem-perature of outdoor unit reaches above option 1.

The defrosting control is available without reference to heating operation time only if the pipe temperature ofoutdoor unit reaches below option 2.

Setting Freq.OperatingFreq. Of Comp(Comp off Inapplicable.)

4-Way

IndoorFAN

IndoorFAN

Pre-HeatLED

5sec 5sec

Minimum TimeOf Heating Main Deice time

30sec 10sec 1min

ON

OFF

Hi Speed

ON

SettingSpeed

HotStartOFF

Super low speed low speed

ONOFF OFF

Deice STEP 0 1 2 3 4 5 6

EEVOpen step

The Degree of Superheat Control

Starting Step

off

Min (Option)_(12) Step 3 (Option)_(15)

300 (Option)_(14)off

Step 5 (Option)_(13)

Min (Option)_(12)

off

15 sec

Min (Option)_(12) Min (Option)_(12)

OperatingFreq. Of Comp(Comp off Applicable.)

Step 3 (Option)_(15) Step 5 (Option)_(13)

SettingSpeed

SettingSpeed

Setting Freq.

Setting Freq.

>5>5>5

-25-25-30-30Option 2

Expected heating operating time And Heating operating time 40 minutes

The minimum Time ofHeating(sec)

>4Option 1-10C less than 0C more than-10~-5C between -5~0C betweenThe mean outdoortemperature

Defrosting control


Operation

Function used to perform the Self Cleaning to prevent the Unit from Fungus and Bad Odors. Used after the Shut Down of Cooling Operation to Clean the Evaporator and keep it as fresh for the Next operation. During Self Cleaning the Outdoor Unit is Switched off. The function is easy to be operated as It is accessed through the Remote Controller.

Auto Cleaning

Auto Changeover

Low Ambient

Comp. ON OFFSetting Step S-LowIndoor Fan

ON

Cooling CYCLE

OFF

30 MinCleaningCooling Start

25 SecOnOff

The air conditioner changes the operationmode automatically to keep indoor tempera-ture.

When room temperature vary over 2C withrespect to setting temperature, air condition-er keeps the room temperature in 2C withrespect to setting temperature by autochange mode.

If outdoor temperature drops below certain temperature,liquid back is prevented by reducing fan speed.It can prevent frosting of evaporator and keep cooling operation

No matter even if the outdoor temperature reaches -10C. You can Cool your room at your desired temperature all your around.

Freq.

- 0C Outdoor temp.

Outdoor pipe temp.0C outdoor fan On/Offcontrol

Comp Freq.

Outdoor fanOn On

OffOff

Outdoor temp.:-10C

-5

0

5

10

15

20

25

0 50 100 150 200

Time(Min.)

Tem

p.(C

)

Outdoor fan On/Off control

Cond . temp.

COOLINGAutoChangeMode.

Outdoor temp.Indoor temp.

Outdoortemp.

30C

20C

10C

+2C+1C

+0.5CSet Temp.-0.5C-1C-2C

HEATING

Service Manual 37

This is operation to preheat the compressor by conducting current through motor coils of the compressor for pre-venting phenomena that liquid refrigerants are income due to difference between temperature of the outside pipeand temperature of the compressor as outdoor temperature becomes low.

Enter preheat operation of the compressor if meeting , , conditions as below at the same time. where outdoor temperature is less than 5Cwhere discharge temperature of the compressor is more than 15Cwhere the compressor turns off

Release preheat operation if meeting one or more of , , conditions.where outdoor temperature is more than 5Cwhere diacharge temperature of the compressor is more than 25Cwhere the compressor turns on

1) The buzzer sounds 3 times if pressing the tact switch for 10seconds. If turning off the tack switch in this case, theoperation LED flickers and existing/additional heat Logic is toggled.

2) Display of operation LED in selection of heat option.- When selecting additional heat Logic : Flickering numbers of LED; 1 time- When selecting existing heat Logic : Flickering numbers of LED; 2 times

3) Setting is selectable regardless of operation status (on/off)

Preheat

Selection of Heat Logic Option

Operation

25C

15C

COMP Discharge Temerature

Preheat Off

Preheat On


Operation

Tact S/W

Buzzer sound

Operation LED

Flickering 4 times

10sec

ONOFF

ONOFF

When selecting additional heat Logic

1.5sec

(1time)

(2times)When selecting existing heat Logic

0.25sec

0.25*3 sec

1.5sec 1.5sec

1.5sec 1.5sec 1.5 sec

Function of operation off for preventing overload when the indoor fan stops in the operating condition of the outdoorunit.

Contents of operation- When feedback rpm of the BLDC fan motor is successively less than 50 for 12 seconds in the operation condition

of the indoor fan, it is considered as lock of the indoor fan.- If detected as lock of the indoor fan, immediately turn off the compressor and stop the indoor appliances.- Error is displayed through the indoor error display LED in this time. (Periodically flickers 8 times)- The indoor unit detects the fan lock error status even if re-operating the unit during 2min delay of Comp Off in

spite of release of the fan lock. Normal operation is done if re-operating the unit after Comp Off for 2min.

Indoor fan lock detection (BLDC)

Service Manual 39

Remote Control Operations

Operation

The controls will look like the following.1. START/STOP BUTTON

Used to turn off/on the unit.2. OPERATION MODE SELECTION BUTTON

Used to select the operation mode.3. ROOM TEMPERATURE SETTING BUTTONS

Used to select the room temperature.4. INDOOR FAN SPEED SELECTOR BUTTON

Used to select fan speed in four stepslow, medium, high and CHAOS.

5. JET COOL BUTTONUsed to start or stop the speed cooling, heating.(It operates fan in super high speed in cooling mode, heatingmode)

6. CHAOS SWING BUTTONUsed to stop or start louver movement and set the desiredup/down airflow direction.

7. ON/OFF TIMER BUTTONSUsed to set the time of starting and stopping operation.

8. TIME SETTING BUTTONSUsed to adjust the time.

9. TIMER SET/CANCEL BUTTONUsed to set and to cancel the timer operation.

10. SLEEP MODE AUTO BUTTONUsed to set sleep mode auto operation.

11. AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating.ENERGY-SAVING COOLING MODE BUTTON (OPTIONAL)For inverter type models

12. ROOM TEMPERATURE CHECKING BUTTONUsed to check the room temperature.

13. PLASMA BUTTON(OPTIONAL)Used to start or stop the plasma-purification function.

14. RESET BUTTONUsed prior to resetting time.

15. 2nd F BUTTONUsed prior to using modes printed in blue at the bottom of but-tons.

16. AUTO CLEAN BUTTON(OPTIONAL)Used to set auto clean mode.In some models this button has a 2nd function of LED luminosi-ty control.

17. HEATER BUTTON(OPTIONAL)(Not available in all models)

18. LCD LUMINOSITY BUTTON(OPTIONAL)Used to adjust LCD luminosity.

ON OFF

CANCEL

AUTO CLEANSET

1

3

5

4

9

17

10

12

15

72

81314

11

6

Cooling Operation

Auto Operation or Auto Changeover

Healthy Dehumidification Operation

Flip-up door(opened)

Heating Operation

Signal transmitter

Cooling Model( ), Heat Pump Model( )

1618

Operation Mode

( )


Disassembly

DisassemblyIndoor Unit

WARNING: Disconnect the unit frompower supply before making anychecks. Be sure the power switch is setto "OFF"

1. Open panel front Pull the upper part of the front panel. Lift up the panel. To detach the front panel, remove the two screws

at the lower part. Detach the front panel from the body. To detach the panel, disconnect the connector at

the upper part.

2. To remove the Control Box.- Before removing the control box, be sure to

disconnect the wires from PWB.- Pull the cover control out from the control box

and disconnect other wires.- Remove securing screws.- Pull the control box out from the chassis carefully.

Panel Front Connector

Sensor Connector

Step Motro Connector

Front Panel ConnectorHVB Connector

AC/DC Connector

Motor Connector

Service Manual 41

Disassembly

3. To remove the Evaporator.- Remove 4 screws securing the evaporator.- Pull the evaporator out from the chassis carefully.

4. Before removing the Turbo Fan.- Remove the securing screws from the chassis.- Pull the drain pan, top cover and the air guide.

5. To remove the Motor.- Remove the securing bolt from the motor shaft.- Pull the fan out from the motor shaft.- Remove 4 screws securing motor mount from the

chassis and lift up the motor mount and the bracket.

Top Cover

Air Guide

Motor MountBolt

Turbo Fan

Bracket


Troubleshooting Guide


INDOOR UNIT OUTDOOR UNIT

HEATEXCHANGE(EVAPORATOR)

HEATEXCHANGE(CONDENSER)

COMPRESSOR

ACCUMULATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

EEV3-WAY VALVE

COOLINGHEATING

REVERSINGVALVE

INDOOR UNIT OUTDOOR UNIT

HEATEXCHANGE(EVAPORATOR)

HEATEXCHANGE(CONDENSER)

COMPRESSOR

ACCUMULATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

3-WAY VALVE

COOLINGHEATING

REVERSINGVALVE

(1) Model Capillary TubeRefrigeration Cycle Diagram

(2) Model Adopted Electrion Expansion Valve

Service Manual 43


2-way, 3-way Valve

2-way Valve (Liquid Side) 3-way Valve (Gas Side)

Shaft position Shaft position Service port

Closed Closed Closed(with valve cap) (with valve cap) (with cap)

Open Closed Open(counter-clockwise) (clockwise) (push-pin or with

vacumm pump)Open Open Closed

(with valve cap) (with valve cap) (with cap)Closed Open Open

(clockwise) (counter-clockwise) (connected manifoldgauge)

Open Open Open(with charging

cylinder)Open Open Open

(with chargingcylinder)

Open Open

Open Open

Works

Shipping

Air purging(Installation)

Operation

Pumping down(Transfering)

Evacuation(Servicing)

Gas charging(Servicing)

Pressure check(Servicing)Gas releasing(Servicing)

1.

2.

3.

4.

5.

6.

Valve capOpen positionClosed position

Pin

Serviceport

Serviceport cap

To outdoor unit

Flare nut

To piping connection

To outdoor unit

Hexagonal wrench (4mm)

Open positionClosed position

To piping connection

Flare nut

Open(with charging cylinder)Open(with charging cylinder)



Required tools : hexagonal wrench, adjustable wrench,torque wrenches, wrench to hold thejoints, and gas leak detector.

The additional gas for air purging has been chargedin the outdoor unit.However, if the flare connections have not be donecorrectly and there gas leaks, a gas cylinder and thecharge set will be needed.

The air in the indoor unit and in the piping must bepurged. If air remains in the refrigeration pipes, it willaffect the compressor, reduce to cooling capacity,and could lead to a malfunction.

Procedure

(1) Recheck the piping connections.(2) Open the valve stem of the 2-way valve coun-

terclockwise approximately 90, wait 10 sec-onds, and then set it to closed position. Be sure to use a hexagonal wrench to operate

the valve stem.

(3) Check for gas leakage. Check the flare connections for gas leakage.

(4) Purge the air from the system. Set the 2-way valve to the open position and

remove the cap from the 3-way valves serviceport.

Using the hexagonal wrench to press the valvecore pin, discharge for three seconds and thenwait for one minute. Repeat this three times.

(5) Use torque wrench to tighten the service portnut to a torque of 1.8kg.cm.

(6) Set the 3-way valve to the back seat. (7) Mount the valve stem nuts to the 2-way and 3-

way valves. (8) Check for gas leakage.

At this time, especially check for gas leakagefrom the 2-way and 3-way valves stem nuts,and from the service port nut.

Service port nut:Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents thegas leakage from the refrigeration cycle.

CAUTION: Do not leak the gas in the air during Air purging.

CAUTION: If gas leakage are discoveredin step (3) above, take the followingmesures :

If the gas leaks stop when the piping connectionsare tightened further, continue working from step (4). If the gas leaks do not stop when the connectionsare retightened, repair the location of the leak, dis-charge all of the gas through the service port, andthen recharge with the specified amount of gas froma gas cylinder.

Liquid sideOutdoor unit

3-wayvalve

Gas side

Indoor unit

2-wayvalve

Open

Clsed

Air purging

Service Manual 45


Procedure

(1) Confirm that both the 2-way and 3-way valvesare set to the open position. Remove the valve stem caps and confirm that

the valve stems are in the raised position. Be sure to use a hexagonal wrench to operate

the valve stems.

(2) Operate the unit for 10 to 15 minutes.

(3) Stop operation and wait for 3 minutes, thenconnect the charge set to the service port ofthe 3-way valve. Connect the charge hose with the push pin to

the service port.

(4) Air purging of the charge hose. Open the low-pressure valve on the charge set

slightly to air purge from the charge hose.

(5) Set the 2-way valve to the closed position.

(6) Operate the air conditioner at the coolingcycle and stop it when the gauge indicates1kg/cm2g.

(7) Immediately set the 3-way valve to the closedposition. Do this quickly so that the gauge ends up indi-

cating 3 to 5kg/cm2g.

(8) Disconnect the charge set, and mount the 2-way and 3-way valves stem nuts and the ser-vice port nut. Use torque wrench to tighten the service port

nut to a torque of 1.8 kg.m. Be sure to check for gas leakage.

Lo

Closed

Purge the air

Outdoor unitIndoor unit Liquid side

Gas side

CLOSE

Open2-Wayvalve

3-Wayvalve

CLOSE

Pumping Down



Re-air Purging (Re-installation)

Procedure

(1) Confirm that both the liquid side valve and thegas side valve are set to the closed position.

(2) Connect the charge set and a gas cylinder tothe service port of the Gas side valve. Leave the valve on the gas cylinder closed.

(3) Air purging. Open the valves on the gas cylinder and the

charge set. Purge the air by loosening the flarenut on the liquid side valve approximately 45for 3 seconds then closing it for 1 minute;repeat 3 times.

After purging the air, use a torque wrench totighten the flare nut on liquid side valve.

(4) Check for gas leakage. Check the flare connections for gas leakage.

(5) Discharge the refrigerant. Close the valve on the gas cylinder and dis-

charge the refrigerant until the gauge indicates3 to 5 kg/cm2g.

(6) Disconnect the charge set and the gas cylin-der, and set the Liquid side and Gas sidevalves to the open position. Be sure to use a hexagonal wrench to operate

the valve stems.

(7) Mount the valve stem nuts and the serviceport nut. Use torque wrench to tighten the service port


CAUTION: Do not leak the gas in the airduring Air Purging.

Lo

Closed

OPEN

Closed

Gas cylinder

R22


Gas side

CLOSE

3-Wayvalve

3-Wayvalve

Service Manual 47


Balance Refrigerant of the 3-way Valve(Gas leakage)

Procedure

(1) Confirm that both the 2-way and 3-way valvesare set to the back seat.

(2) Connect the charge set to the 3-way valvesport. Leave the valve on the charge set closed. Connect the charge hose to the service port.

(3) Open the valve (Lo side) on the charge set anddischarge the refrigerant until the gauge indi-cates 0 kg/cm2G. If there is no air in the refrigerant cycle (the

pressure when the air conditioner is not runningis higher than 1 kg/cm2G), discharge the refrig-erant until the gauge indicates 0.5 to 1kg/cm2G. if this is the case, it will not be neces-sary to apply a evacuatin.

Discharge the refrigerant gradually; if it is dis-charged too suddenly, the refrigeration oil willalso be discharged.

Lo

Open

Open3-Wayvalve

3-Wayvalve

Gas side

CLOSEOPEN

Outdoor unit

Liquid sideIndoor unit



Evacuation (All amount of refrigerant leaked)

Procedure

(1) Connect the vacuum pump to the center hoseof charge set center hose

(2) Evacuation for approximately one hour. Confirm that the gauge needle has moved

toward -76 cmHg (vacuum of 4 mmHg or less).

(3) Close the valve (Lo side) on the charge set,turn off the vacuum pump, and confirm thatthe gauge needle does not move (approxima-tely 5 minutes after turning off the vacuumpump).

(4) Disconnect the charge hose from the vacuumpump. Vacuum pump oil.

If the vacuum pump oil becomes dirty ordepleted, replenish as needed.

Lo

Open

Open

Vacuum pump

3-Wayvalve

Outdoor unitLiquid sideIndoor unit

Gas side

3-Wayvalve

CLOSEOPEN

Service Manual 49


Gas Charging (After Evacuation)

Procedure

(1) Connect the charge hose to the chargingcylinder. Connect the charge hose which you dis-con-

nected from the vacuum pump to the valve atthe bottom of the cylinder.

If you are using a gas cylinder, also use ascale and reverse the cylinder so that the sys-tem can be charged with liquid.

(2) Purge the air from the charge hose. Open the valve at the bottom of the cylinder

and press the check valve on the charge set topurge the air. (Be careful of the liquid refriger-ant). The procedure is the same if using a gascylinder.

(3) Open the valve (Lo side on the charge set andcharge the system with liquid refrigerant. If the system can not be charged with the spec-

ified amount of refrigerant, it can be chargedwith a little at a time (approximately 150g eachtime) while operating the air conditioner in thecooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and thenrepeat the procedure (pumping down-pin).

(4) Immediately disconnect the charge hose fromthe 3-way valves service port. Stopping partway will allow the gas to be dis-

charged. If the system has been charged with liquid

refrigerant while operating the air conditionerturn off the air conditioner before disconnectingthe hose.

(5) Mount the valve stem nuts and the serviceport nut. Use torque wrench to tighten the service port


\

This is different from previous procedures.Because you are charging with liquid refrigerantfrom the gas side, absolutely do not attempt tocharge with larger amounts of liquid refrigerantwhile operating the air conditioner.

Lo

Chargingcylinder


Gas side

CLOSE

Open3-Wayvalve

3-Wayvalve

OPEN

Open

Check valve

(1)



Trouble analysis

1. Check temperature difference between intake and discharge air and operating current.

Temp. Difference

Temp. difference : approx. 0CCurrent : less than 80% of

rated current

Temp. difference : approx. 8CCurrent : less than 80% of

rated current

Temp. difference : less than 8CCurrent : over the reated

current

Temp. difference : over 8C

Operating Current

All amount of refrigerant leakedout. Check refrigeration cycle.

Refrigerant leakegeClog of refrigeration cycleDefective compressor

Excessive amount of refrigerant

Normal

Temperature difference between intake and discharge air depends on room air humidity. When the room airhumidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower tem-perature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

1. The suction pressure is usually 8.5~9.5kg/cm2G(Cooling) at normal condition. 2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with

putty.

NOTICE

NOTICE

Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description

the normal value) the normal valve)Defective compressor Current is low.Defective 4-way reverse valve

Excessive amount of High pressure does not quicklyNormal refrigerant rise at the beginning of

operation.

Insufficient amount of Current is low.Lower Higher refrigerant (Leakage)

Clogging Current is low.

High

Higher

Cycle Parts

Service Manual 51


Self diagnosis Function

1 time 1time

3 sec

2 times 2 times

3 sec

4 times 4 times

3 sec

5times 5times

3 sec

6times 6times

3 sec

7times 7times

3 sec

3 sec

3 sec

2 times

3 sec

2 times

3 sec

1time

3 sec

1time

3 sec

1time

3 sec

1time 2times

1time

1time 1time4 times 4 times

1time3 times 3 times

1time

1

2

4

5

6

7

Error IndicatorErrorCodeCause of Error Display

Indoor OutdoorIndoor

Operation

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

Indoor Temp. sensor error - Sensor open or short

Heat Sink sensor error - Sensor open or short - Heat Sink temp is over 95

Communication error

Outdoor Temp. sensor error - Sensor open or short

DC Peak error

Over current error (CT2)

ON

ON

ON

OFF

SHUTDOWN

SHUTDOWN

9times 9times

3 sec

10 times 10 times

3 sec

3 sec

3 sec

3 sec

3 sec

2times

10 ON

Outdoor fan lock error

D-Pipe TH. is short or open.

(BLDC fan model only) OFF

8times 8times

3 sec8 Indoor fan lock error (BLDC fan model only) OFF

9

O

O

O14 ON

PSC Error - PSC Fault Error

Comp Phase Current Error (180 Driver Comp Control Model Only)

ON

12 EEPROM Error - EEPROM Check sum Error ON

13


1. Error indicator of air conditioner1) Indoor : Operating LED / Outdoor : LED01M(Red) on the outdoor PCB 2) 2 more errors occur at same time

- Air conditioner Off condition : Display the error code of product off cause - Air conditioner On condition : Display the prior Error Code

2. Cancellation of Error indicator1) Error Code 1, 2, 3, 4, 10 : Error indicator canceled when cause of error recovered2) Error Code 5, 8, 9 : Keep displaying Error indicator by restarting air conditioner,

although cause of error recovered3) Error Code 6, 7 : Error indicator canceled when power reset (Power Cord Off & On)


Precaution in Service or CheckEven after stopping the operation of product, it takes some time to discharge the remaining electricity of theelectrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of theoutlet and make sure that the lamp on the control board outdoor unit is off.

The Diagnosis Procedure

Check the supplied voltage to product (AC 220V/230V 30V).

Check the connecting cable between Indoor and Outdoor.

Check the blinking number of operation indicator (refer to the self-diagnosis function).

Check the self-diagnosis table

Check the condition of connectors The condition of P.C.B pattern.

Check the condition of connectors. The condition of P.C.B pattern. The electronic components.

Indoor Outdoor

Service Manual 53


Electronic Parts Refer to electronic contorol device drawing & schematic diagram.

The Product doesnt operate at all.

Turn off the main power and wait to 10 seconds

Turn on the main power again.

Does "Beeping" sound is made from the indoor unit?

Primarily, the operating condi-tion of Micom is O.K.

Check CN-DISP1CN-DISP2 of indoor PCB

Check the voltage of power(AC220V/AC240V, 50Hz).

The voltage of main power. The voltage applied to the unit. The connecting method of Indoor/Outdoor connecting cable (each color) The P.C.B. Ass'y(Fuse, Noise Filter, Power Module, Bridge Diode, etc.)

Trouble 1

NO YES

The operation check of the Indoor P.C.B. Ass'y

Procedure1) The input voltage of power mod-

ule.

2) The output voltage of power mod-ule.

4) IC04D(7805)5) IC01A(KIA7036)

Specification1) AC230V 30V

: Check the rated voltage

2) 12V 3V

4) DC5V5) The voltage of micom pin 19

: DC4.5V

Remedy1) Check the power outlet.

2) Replace P.C.B Ass'y

4) Replace P.C.B Ass'y5) Replace P.C.B Ass'y



Turn on main power.

While the compressor has been stopped, the compressor does not operate owing to the delaying function for 2 minutes after stopped.

When the compressor stopped Indoor Fan is driven by a low speed.At this point the wind speed is not controlled by the remote controller.

(When operated in the Sleeping Mode, the wind speed is set to the low speed as force).)

Caused by the remote controller. Caused by other parts except the remote controller

When the mark ( ) is displayed in LCDscreen, replace battery.

Check the contact of CN-DISP 1, 2 connector

Check DISP P.C.B Ass'y -Voltage between CN-DISP1 - : DC +5V

Check point Check the connecting circuit between

MICOM PIN and CN-DISP1 PIN Check receiver ass'y

Product doesn't operate with the remote controller.Trouble 2

Service Manual 55


Troubleshooting for error code Description Cause of error

1 Indoor TH. (sensor) is short or open Indoor TH. (sensor) is not connected to the indoor pcb assembly Damage or defect on the sensing circuit of indoor pcb assembly. (R01H, R02H, R03H, R04H, C01H, C02H)

Indoor TH. is short oropen

Indoor TH. is connected to Indoor pcb assembly ? Indoor TH. is right ?

YES

No

- Connect to CN-TH1 in indoor pcb assembly

Sensing circuit of indoorpcb is right ?

No

Check Indoor TH.- Measure resistance of TH. (air : about 10k at 25 C, pipe : about 5k at 25 C)

YES

No

- Check soldering state of R01H ~ R04H, C01H, C02H

Check flow

2 Outdoor TH. (sensor) is short or open Outdoor TH. (sensor) is not connected to the outdoor pcb assembly Damage or defect on the sensing circuit of outdoor pcb assembly. (R03H~R06H, C02H, C03H)

Outdoor TH. is short oropen

DescriptionError code

Error code

Cause of error

Outdoor TH. is connected to outdoor pcb assembly ? Outdoor TH. is right ?

YES

No

- Connect to CN-TH1 in outdoor pcb assembly

Sensing circuit of outdoorpcb is right ?

No

Check outdoor TH.- Measure resistance of TH. (air : about 10k at 25 C, pipe : about 5k at 25 C)

YES

No

- Check soldering state of R03H ~ R06H, C02H, C03H

Check flow



9K / 12K

4

Heat-sink TH. is damaged(short or open).

Heat-sink Temp. is over 95C

Damage or defect on the sensing circuit of outdoor pcb assembly. (R01H, R02H, C01H)

Heat-sink Temp. is over95CHeat-sink TH.is open or short

Heat-sink TH. in INV-IC isRight ?


YES

No

Check heat-sink TH. - Measure resistance of TH. (about 10k at 25 C)

Heat-sink TH is connected to outdoor PCB assembly?

YES

No

- Connect to CN-TH2 in outdoor PCB assembly

No

- Check soldering state of R01H, R02H, C01H

Check flow

Description Cause of errorError code

Service Manual 57


5

Wrong or missing wiring between indoor and outdoor unit cable Defect of communication components in indoor pcb assembly Defect of communication components in outdoor pcb assembly Defect of power supply components in outdoor pcb assembly No ground connection in air conditioner unit (affected by noise in power source)

Communication Error

Wiring connectionIs right ?

Is the voltage of T/Block, in outdoor about

AC 220/240V ?

YES

No

Indoor

Outdoor 1(BR) 1(BR) 2(BL) 2(BL)3(GN/YL) 3(GN/YL) 4(RD) 4(RD)

No

Check power connectorIs not connected to theT/Block in indoor unit.

Check flow

Is the voltage of GND & DC5V in Outdoor pcb about DC 5V ?

YES

No

Check FUSE, NF01/02J, PTC,Power Module, BD-01S in Outdoor pcb assembly

Communication circuit of indoor& outdoor pcb Is right ?

YES

No

Check IC01K, IC02K,D01K~D03K,ZD01K~ZD03K, R01K~R10K,C01K~C04K

Ground connection is installed ?(power outlet or outdoor chassis)

YES

No

Install ground connection from outdoorunit. (In case power outlet has no earthport)

Earth port




Cause of error

6

Supplied power is not normal Comp Connector (CN-U,V,W) is disconnected or inserted to wrong position Compressor is damaged (coil short) replace compressor Too much Refrigerant Defect in outdoor pcb assembly replace pcb assembly

DC Peak Error

Supplied voltage toOutdoor pcb is aboutAC 220/240V ?

Is connector (CN-U,V,W)connected to compressor and inserted to pcb in right position ?

YES

No

Check power source

No

Check CN-U,V,W connector(U : RD, V : BL, W : YL)

Check flow

Refrigerant pressure is right ?

YES

No

Check refrigerant pressureand adjust.

Is the compressor right ?

YES

No

Check resistance Between U-V, V-W, U-W port.

Short / Open circuit (Comp.motor coil error) normal : 1 ~2

Between U,V,W and Body normal : over10M

Inverter components in outdoor pcb assembly areright ?

YES

No

* 9 K/12K ModelCheck

Short of SPM3 pins (GND - P, U, V, W pin) Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z Assembling state of R01P ~ R21P & IC01P Assembling state of screw between INV-IC &

Heat-sink DC 15V output of Power module.

* 18 K ModelCheck

Short of SPM2 pins (GND P, U, V, W pin) Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z Assembling state of R01P ~ R21P & IC01P Assembling state of screw between INV-IC &

Heat-sink DC 15V output of Power module.

V

U

W


Service Manual 59


7 Supplied power is not normal Indoor/outdoor fan is locked Too much refrigerant Defect in current sensing circuit in outdoor pcb assembly

Over current Error(CT2)

Supplied voltage toOutdoor pcb is aboutAC 220/240V ?

Does indoor / outdoor fan worknormally ?

YES

No

Check power source

No

Check indoor / outdoor fan andadjust.

Check flow

Refrigerant pressure is right ?

YES

No

Check refrigerant pressureand adjust.

Current sensing circuit is right ?

YES

No

Check current sensing circuit.- check CT is damaged in outdoor pcb

(output wire is disconnected to pin or not)- BD01N is inserted in right position

(refer marking on pcb and component)- Spec of R01N (1k), R02N (1.65k) is correct- Direction of diode (D01N, D02N) is right




8 Indoor fan is locked or separated Fan connector is not connected to indoor pcb assembly Defective in DC-fan driving circuit

Indoor fan is locked(BLDC fan model only)

Indoor fan is rotating ? (1) Indoor fan is rotating ? (2)

YES

No

Check indoor unit- remove obstacles in indoor unit- fan assembled correctly.

No

Check soldering state of CN-Motor1 & assemblingstate of DC Fan connector

Check flow

DCfan driving circuit is right ?

YES

No

Check DC Fan Driving circuit(Soldering state & Direction)- R01F~R09F, C01F~C03F, IC01F~IC03F, Q01F~Q02F, ZD01F

9 Outdoor fan is locked by an obstacle (ex : branch of tree, baretc) Fan connector is not connected to outdoor pcb assembly Defective in DC-fan driving circuit

Outdoor fan is locked(BLDC fan model only)

Outdoor fan is rotating ? (1) Outdoor fan is rotating ? (2)

YES

No

Check outdoor unit- remove obstacles in outdoor unit

No

Check connector is not connected to outdoor pcbassembly (CN-FAN2)

Check flow

DCfan driving circuit is right ?

YES

No

Check DC Fan driving circuit(Soldering state & Direction)- R01F~R05F, C01F~C03F, Q01F~Q04F, ZD01F



Service Manual 61


10 D_pipe TH. is short or open D_pipe TH. is not connected to the outdoor pcb assembly Damage or defect on the sensing circuit of outdoor pcb assembly

D-Pipe TH. is short oropen

D_PIPE TH. is connected toOutdoor pcb assembly ? D_PIPE TH. is right ?

YES

No

Connect to CN-D_PIPE in outdoor pcb assembly


No

Check D_PIPE TH.- Measure resistance of TH. (about 200k at 25C.)

YES

No

- Check soldering state of R07H, R08H, C04H

Check flow



Wiring Diagram

Schematic Diagram

Indoor Unit Models: ASNW096F1E/V/GG0, ASNW126F1E/V/GG0, ASNW126F2G0(A12AW2-NF6)

Schematic Diagram

Service Manual 63

Schematic Diagram

Outdoor Unit Models: ASUW096FUG0, ASUW126FUG0, ASUW126FUG0(A12AWU-UF6)


Schematic Diagram

Components Location

BOTTOM VIEW

INDOORMAIN P.W.B ASSEMBLY (AC PART) TOP VIEW

TRANS01Y

C03Y

C02L

CN-ACDC2

D02Y

U05Y

R03K

R01K

C01Y

L3R01E

C08F

R06YC04YD01Y

C08YVR01Y U01Y

R02YR04YC07Y

C05Y

C02Y

U02Y

R04C

R03C

C10B

C02C

R02C

C09BC08B

C07B

Q01C

U03Y

R06F

R03YR01Y

LED1 R07Y

C06Y

CN_COM

ZNR01YEEPROM

C03A C02A

U04Y

IC01A

R08Y

C09Y

R02K

R01CC01C

R01A

R03AR02A

1

10

C01A

CN-HVBC01K

R10D

R08D

R03N

R02L

C01L

C15BCN-L/R2(WH)

CN-L/R1(WH)

C02M

IC02M

CN-U/D(BL)C16B

L4BZ01E

C06BC05B R02E

L5R07F

R04F

R02N

C13H

R01BR07N

R03PR02P

C01PR01P

C01X

C12B

60 50

20 30

IC03M

OR01H

R08H

OSC01B

40

OR02H

R07H

C11B

C14BC13B

MICO

MR01N

C03L

C06HC05H

C04H

CN_OPTION

R04H

C03H

C01M R03HIC01M

R02H CN-TH2

R06H

C02H

R05H

C01H CN-TH1

R05Y

R03F

R01H C02F

R05F

C01F

CN_D2

C03M R01T R11HR01L

CN-LEV

C02BR12H

C04BC03B

C01B

R01F

R02F

CN-CC

U04Y

CN-ACDC2

C03Y

VR01

Y

C04Y

C02LU02YTRANS01Y U03Y

L3

Q01C

CN-L/R1(WH)

CN-U/D(BL)

LED1

CN-L/R2(WH)

PCB ASM : 6871A20920

C02A

CN_COM

IC01A

EEPROM

OSC

01B

L5L4

CN-HVBBZ01E C03L

CN_D2

CN-C

C

PWB

: 687

0A90

728

A

CN_O

PTIO

N

CN-T

H1CN

-TH2

CN-LEV

1

1

1

Service Manual 65

Schematic Diagram

BOTTOM VIEW

INDOORMAIN P.W.B ASSEMBLY (DC PART) TOP VIEW

CN-DISP

VOUTGND

PCB ASM:6871A20921

PWB:6870A90729 A

REC

EIVE

R

R01A

C01A


Schematic Diagram

DISPLAY ASSEMBLY TOP VIEW

PWB ASSEMBLY SUB TOP VIEW

CN-SW(BL)CN-D7

CN-D8

1

CN-D6

1

11

C02V

C01V

CN-D3

CN-CON(WH)

1

CN-D1

1

1

1

CN-12V(WH)

1

CN-D4

1

PWB ASM:6871A20363

CN-D5

1

1

CN-D61

CN-D7

1

1

CN-D8

1

C01V

C02V

CN-SW(BL)

CN-D3

CN-D1

1

1

CN-CON(WH)

1

CN-D2

CN-12V(WH)

1

PWB:6870A90126B

1

CN-D4

PWB ASM:6871A20363

CN-D5

1

Service Manual 67

Schematic Diagram

BL/WH

D02NC03F

D01

Y

7

6

SPM3 : 6002EC2005

1

SPM3

C16Z

C02D C03

D

C01D

21

1 53

POWER MODULE

L1

R01D

C19Z

R14Z

R16ZR08Z

R09Z

D03Z

R11Z

15

lg air conditioner service manual

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