alarm overzicht - nibe.eu · automatic reset proposal: check the sensor and its connections. see...
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Number Alarm Cause: Heat pump operation: Action: Type
1 Sensor faultBT1
Sensor notconnected/defective
Calculated flowtemperature is set to mincalculated flowtemperature
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
2 Sensor faultBT2
Sensor notconnected/defective(heating mediumreturn)
Addition blocked. GM iscalculated with"condensor out" sensor.Even if "condensor out"sensor is missing, heatingis blocked.
VVM 500: 1. Using BT 3 ifits available. 2. If BT 3 isnot avaialable, BT63 willbe used.
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
3 Sensor faultBT3
Sensor notconnected/defective(heating mediumreturn)
Compressor is blockedwhen hot water loading.
VVM 500: Let the heatingmedium pump goaccording to the speedthat is chosen in themenu 5.1.19= constantly
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
6 Sensor faultBT6
Sensor notconnected/defective(hot water,controlling)
VVM 500: UsingBT54
Automatic reset Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
7 Sensor faultBT7
Sensor notconnected/defective(hot water peak)
Automatic reset Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
8
Alarm overzicht November 2018
10 Sensor fault:BT10
Sensor notconnected/defective(brine in)
GP2 switches to manualspeed if auto-control isselected. Automaticallyresets when the sensorhas been runningcorrectly in 60 sec. GP2returns to auto-controlled operation.
Proposal:- Check the sensor andits connections.
11 Sensor faultBT11
Sensor notconnected/defective(condensor out)
Compressor blocked Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
12 Sensor faultBT12
Sensor notconnected/defective(condensor return)
Supply sensor (BT2) isused for controlling maxcondensor outtemperature for thecompressor. If supplysensor is also missing;blocked heating modeand blocked compressorin HW mode.
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
16 Sensor faultBT16
Sensor notconnected/defective(evaporator)
Automatic reset Proposal: Check thesensor and its settings.See also the electricalwiring diagram.
20 Ground source:Sensor faultAZ1-BT20Exhaust air:Sensor faultBT20
Sensor notconnected/defective(exhaust air)
Ground source: Pump(AZ1-GP2) in FLM isblocked.Exhaust air: Automaticreset
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
21 Ground source:Sensor faultAZ1-BT21Exhaust air:Sensor faultBT21
Sensor notconnected/defective(extract air)
Grounde source: Pump(AZ1-GP2) in FLM isblocked.Exhaust air: Automaticreset
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
22 Sensor faultDEW-BT6
Sensor notconnected/defective(hot water sensor,controlling in extrawater heater)
25 Sensor faultBT25
Sensor notconnected/defective(heat mediumreturn external)
External additive blocked Proposal: Check thesensor and itsconnections. See alsothe fault-tracingschedule for thecurrent product.
26 Sensor faultAZ1-BT26
Sensor notconnected/defective(brine, collector in)
Pump (AZ1-GP2) in FLM isblocked.
Proposal: Check thesensor and itsconnections. See alsothe fault-tracingschedule for thecurrent product.
27 Sensor faultBP8
Sensor notconnected/defective(low pressuresensor)
Compressor blocked Proposal: Check thesensor and itsconnections.
28 Sensor faultBT71
Sensor notconnected/defective(external heatingmedium return)
No action. Togehter withalarm 25; heat is blocked.
Proposal: Check thesensor and itsconnections.
29 Sensor faultBT29
Sensor notconnected/defective(compressor oiltemperature)
Compressor blocked Proposal: Check thesensor and itsconnections.
31 Sensor faultBT63
Sensor notconnected/defective(heating mediumsupply afterimmersion heater)
VVM 500: Blockinginternal electricaddition
Automatic reset Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
32 Sensor faultBS1
Air flow is out ofrange of the airvelocity sensor
Automatic reset.Compressor blocked.
Check that the filter isinstalled. Check thefan speed.
33 Sensor faultEP30-BT53
Sensor notconnected/defective(solar collectors)
Solar additive blocked. Proposal: Check thesenors and itsconnections. See alsothe electrical wiringdiagram.
34 Sensor faultEP30-BT53
Sensor notconnected/defective(solar panel)
Solar additive blocked Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
35 Sensor faultEM1-BT52
Sensor notconnected/defective(boilertemperature)
Shunt closes. Burnershuts down.
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
36 Sensor faultEP21-BT2
Sensor notconnected/defective(supply sensor,heating system 2)
Control on return sensor(EP21-BT3)
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
37 Sensor faultEP22-BT2
Sensor notconnected/defective(supply sensor,heating system 3)
Control on return sensor(EP22-BT3)
Proposal: Check thesensor and itsconnections. See alsothe electrical wiringdiagram.
38 Sensor faultEP23-BT2
Sensor notconnected/defective(supply sensor,heating system 4)
Control on return sensor(EP23-BT3).
Proposal: Check thesensor and itsconnections. See alsothe electric wiringdiagram.
39 Sensor faultEQ1-BT64
Sensor notconnected/defective(brine, supply)
Brine blocked, brineshunt closes.
Proposal: Check thesensor and itsconnections. See alsothe electric wiringdiagram.
40 Compressorphase1 missing
Compressor phaseis missing or hasbeen below 160V inmore than 30 min.
Compressor blocked Proposal: Check thephase. Reset thephase.
41 Compressorphase 2 missing
Compressor phaseis missing or hasbeen below 160V inmore than 30 min.
Compressor blocked Proposal: Check thephase. Reset thephase.
42 Compressorphase 3 missing
Compressor phaseis missing or hasbeen below 160V inmore than 30 min.
Compressor blocked Proposal: Check thephase. Reset thephase.
43 Faulty phasesequence
Phases ar connectedin wrong sequence
Compressor blocked Proposal: Reconnectthe phase sequenceon incomingelectricity.
44 Overheatedsoftstart
Fuses for the softstart card aredefective
Compressor blocked. - Defective fuse- Defective soft startcardAlso read: TDI Alarm44 F1345 2013-12-18
45 Motor protectionon single phase(Norway) hasprobably beentriggered.
50 High pressurealarm
The high pressureswitch hastriggeredrepeatedly
Compressor blocked.Manual reset.
Bad circulation in theheating mediumcircuit.Proposal:- Bleed heat pumpand climate system- Check the heatingmedium pump- Open any radiatorthermostats- Check that theparticle filter is notblocked- Check that thepressure switch iscorrectly connectedFault in coolingcircuit:- Call a qualifiedrefrigerationtechnician
51 Low pressurealarm
F1145: Lowpressure sensor hasbeen below its cut-off value. Others:
Compressor blocked.Manual reset.
Proposal:Groundsource: Checkthe brine flow andbrine frost protection
The low pressureswitch hastriggered.
point. See also theelectric wiringdiagram. Exhaust air: -Check ventilation flowand exhaust airtemperature. - Checkthat the pressureswitch is correctlyconnected - Check thedefrost function andthe sensors thatcontrol it.
52 Temperaturelimiter
Temperaturelimiter has tripped
Immersion heaterblocked. Manual reset.
Proposal:- Check if air insystem.- Check if heatingmedium flow iscorrect.- Manual reset of thetemerature limiter.See also the electricwiring diagram.
53 Level switch Level switchbrine /pressureswitch hastriggered
The compressor andbrine pump are blocked.
Proposal: Check andseal any leaks in thecollector circuit.
54 The motorprotection breakerhas triggered.
Proposal: Check thecabling connections ofthe compressor.Manual reset.
55 Hot gas alarm Comperssor hasbeen stoppedbecause the hot gastemperatureexceeded its limits.
Compressor blocked.Manual reset.
Proposal:Ground source: Call aqualified refrigerationtechnician.Exhaust air: See alarmnumber 50, Highpressure alarm.
56 Incorrect serialnumber
Serial number doesnot exist
Compressor stopped andrelay deactivated
Proposal: Check theserial number
57 Incorrectfirmware
Serial number andfirmware do notmatch.
Compressor blocked andrelay deactivates.
Proposal: Make surethat the firmware isdesigned for theproduct and serialnumber.
58 Pressure switch High- or lowpressure switchhave triggered.
Compressor blocked. Bad circulation inheating medium orcollector circuit.Proposal:- Bleed heat pump,climate system andcollector circuit- Check the brinefreezing point- Check the heatingmedium and brinepump- Open any radiator
thermostats- Check that theparticle filter is notblocked- Check that thepressure switch iscorrectly connectedFault in coolingcircuit:- Call a qualifiedrefrigerationtechnician
60 Low HTF out The temperature ofthe outgoing brinegoes below the setmin- temperatureand the alarm isselected.
Compressor blocked. Proposal:Bad circulation in thebrine circuit- Check the brinepump- Check that the brineis bled. Minimum limitis usually changedonly at groundwaterinstallations and opensystems.
63 Low air flowToo low air flow atair flow sensor BS1
Compressor blocked Check the air filter ,fan speed and air flow
64 Low exhaust airtemperature
Exhaust airtemperature hasbeen below 16° Cand not risen above17° C within 60minutes.
Compressor blocked,automatic reset.Resets when the exhaustair temperature has beenabove 17° C in 60minutes.
For firmware versionbefore 1770 - select"auxiliary operation".For firmware versionfrom 1770 onwards-the machine switchesto auxiliary operationmode automatically.
65 Highcondensationwater level
Alarm fromexternal levelmonitor
Compressor blocked - Check the outflowfrom externalcondensation watercontainer
66 Highcondensationwater level
Alarm from levelmonitor incondensation watercontainer
Compressor blocked - Check that the waterhas a free flow fromthe container- Empty watercontainer
67 AntifreezeprotectionSupply air
Supply airtemperature (BT22)is below 5° C .
Fans stops andcompressor is blocked.Any blocking ofimmersion heaterrepeals.
Suggestions:
- Bleed the supply airbattery (QM 21).
- Check the watertemperature and theflow to the heatingbattery.
69 Not affected
Non-calibratedair flow sensor
The air flow sensorhas not beencalibrated
Perform a ventilationadj u stment and setthe real air flow inmenu 5.1.5.1
70 Perm. com.error inputcard
No communicationwith the input card
Calculated flow is set tomin. flow. Manual reset.
Proposal: Check thecommunicationcircuits connections onthe input card anddisplay card.
71 Perm. com.error base card
No communicationwith the base card(AA2 at AA26).
Compressor blocked.Manual reset.
Proposal: Check thecommunicationcircuits connections onthe base-, input- anddisplay card.
72 Perm. com.error softstartcard
No communicationwith the softstartcard.
Compressor blocked. Proposal: Check thecommunicationcircuits connections onsoftstart card andbase card.
73 Perm. com.error heatingsystem 2
No communicationwith the accessorycard.
Accessory blocked. Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
74 Perm. com.error heatingsystem 3
No communiationwith the accessorycard.
Accessory blocked. Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
75 Perm. com.error base card No communication
with the base card(AA26).
Compressor blocked.Manual reset.
Check thecommunication circitsconnections on htebase-, input- anddisplay card.
76 Perm. com.error heatingsystem 4
No communicationwith the accessorycard.
Accessory blocked. Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
77 Accessory blocked.
Perm. com.error additivewith shunt
No communicationwith the accessorycard.
Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
78 Perm. com.error pool
No communicationwith the accessorycard.
Accessory blocked. Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
79 Perm. com.error FLM
Permanentcommunicationfault with theaccessory card forFLM.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Check the cables andcards.
83 Unsuccessfuldefrosting F 1
10 :
Defrost discontinued.Compressor stopped.
P r op o sal
86 Perm. com.error SAM 40
No communicationwith the accessorycard for SAM 40
- Check the powersupply to theaccessory card.- Check the setting of
which is activatedin menu 5.2.
the dipswitch.- Check thecommunication cablesleading to theaccessory card.
87 Perm. com.error stepcontrolledadditive
Permanentcommunicationfault with theaccessory card withstep controlledadditive.
Accessory blocked. Proposal: Check thecables and cards.
88 Perm. com.error Solar
Permanentcommunicationfault with theaccessory card forSolar.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Proposal: Check thecables and cards.
89 Perm. com.error HPAC
Permanentcommunicationfault with theaccessory card forHPAC.Communicationcables to the cardare incorrect orincorrectlyinstalled. Fault inthe communicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Proposal: Check thecables and cards.
90 Perm. com.faultgroundwaterpump
Permanentcommunicationfault with theaccessory card forgroundwaterpump.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.
Accessory blocked. Proposal: Check thecables and cards.
Incorrect address onthe dipswitch.
91 Perm. com.error HWC
Permanentcommunicationfault with theaccessory card forhot watercirculation.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Proposal: Check thecables and cards.
92 Perm. com.error DEW Permanent
communicationfault with theaccessory card forDEW.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Proposal: Check thecables and cards.
93 Perm. com.error 2-pipescooling
Permanentcommunicationfault with theaccessory card for2-pipes cooling.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
Accessory blocked. Proposal: Check thecables and cards.
94 Perm. com.error PCD4
Permanentcommunicationfault with the
Accessory blocked. Proposal: Check thecables and cards.
accessory card for4-pipes passivecooling.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.Incorrect address onthe dipswitch.
95 Perm. Com.Error
Permanentcommunicationfault with
Accessory blocked. Proposal: Check cablesand cards.
96 Perm. Com.Room unit,zone 1
Permanentcommunicationfault with roomunit, zone 1.
Room unit blocked. Proposal: Checkcommunicationcables.
97 Perm. Com.Room unit,zone 2
Permanentcommunicationfault with roomunit, zone 2
Room unit blocked. Proposal: Checkcommunicationcables.
98 Perm. Com.room unit,zone 3
Permanentcommunicationfault with roomunit, zone 3
Room unit blocked. Proposal: Checkcommunication cables
99 Perm. Com.room unit,zone 4
Permanentcommunicationfault with roomunit, zone 4.
Room unit blocked Proposal: Checkcommunicationcables.
100 Perm. Com.error inverter
Permanentcommunicationfault with theinverter
Compressor blocked Propposal:- Check the powersupply leading toinverter andcommunicationcables.
101 Sensor faultBT1
Sensor temporarilymissing
Proposal: Check anysensors andconnections
102 Sensor faultBT2
Sensor temporarilymissing
Proposal: Check anysensors andconnections
103 Sensor faultBT3
Sensor temporarilymissing
Proposal: Check anysensors andconnections
104 Sensor faultBT4
Sensor temporarilymissing
Proposal: Check anysensors andconnections
105
Sensor faultBT5
Sensor temporarilymissing
Proposal: Check anysensors andconnections
106 Sensor faultBT6
Sensor temporarilymissing
Proposal: Check anysensors andconnections
107 Sensro faultBT7
Sensor temporarilymissing
Proposal: Check anysensors connections
108 Sensor faultBT8
Sensor temporarilymissing
Proposal: Check anysensors andconnections
109 Sensor faultBT9
Sensor temporarilymissing
Proposal: Check anysensors andconnections
110 Sensor faultBT10
Sensor temporarilymissing
Proposal: Check anysensors andconnections
111 Sensor faultBT11
Sensor temporarilymissing
Proposal: Check anysensors andconnections
112 Sensor faultBT12
Sensor temporarilymissing
Proposal: Check anysensors andconnections
113 Sensor faultBT13
Sensor temporarilymissing
Proposal: Check anysensors andconnections
114 Sensor faultBT14
Sensor temporarilymissing
Proposal: Check anysensors andconnections
115 Sensor faultBT15
Sensor temporarilymissing
Proposal: Check anysensors andconnections
116 Sensor faultBT16
Sensor temporarilymissing
Proposal: Check anysensors andconnections
117 Sensor faultBT17
Sensor temporarilymissing
Proposal: Check anysensors andconnections
118 Sensor faultBT18
Sensor temporarilymissing
Proposal: Check anysensors andconnections
119 Sensor faultBT19
Sensor temporarilymissing
Proposal: Check anysensors andconnections
120 Sensor faultBT20
Sensor temporarilymissing
Proposal: Check anysensors andconnections
140
Compressorphase 1 missing
Compressor phase 1has been brieflymissing
Proposal: No actionneeded. Possibly checkcompressor phase.
141 Compressorphase 2 missing
Compressor phase 2has been brieflymissing
Proposal: No actionneeded. Possibly checkcompressor phase.
142 Compressorphase 3 missing
Compressor phase 3has been brieflymissing
Proposal: No actionneeded. Possibly checkcompressor phase.
145 Temporarygeneral phasefault
Temporary problemwith thecommunicationfrom the base cardto the motorprotection
Proposal: Checkcables/cards
150 High condensorout
Condensor out hasreached maxpermittedtemperature
Automatic reset
155 Hot gas alarm The Hot gas (BT14)has temporarillybeen over 135° C
Compressor stopped.Automatically reset whenthe hot gas is below 90°C.
Proposal:- Contact a qualifiedservice technician.
158 Low defrosttemperature The temperature at
the defrost (BT76) isbelow -25° C .
Defrostdiscontinued. Compressorstopped.
Proposal:- Check the defrostfunction- Check the defrostsensor (BT76)- Check solenoid valve
159 Highevaporatortemperature
The evaporatortemperature (BT16)has exceeded
Compressorstopped. Defrostdiscontinued.
Proposal:- Check the defrostfunction- Check theevaporator sensor(BT16)- Check solenoid valve
160 Low HTFout Brine out hasreached set mintemperature
Automatic reset
161 High HTFin Brine in hasreached set maxtemperature
Automatic reset
162 High condensorout
Condensor out hasreached maxpermittedtemperature
Automatic reset
163 High condensorin Condensor exceeds
max temperatureAutomatic reset
164 Low exhaust airtemperature
See alarm 64 Automatic reset whenthe temperature exceeds17° C below X minutes
166 Electricalanode incorrect
Fault in theelectrical anode
Proposal:- Check the electricanode, circuit boardat the electric anodeand the cables to theelectric anode.
170 Com. errorinput card
Communicationwith the input cardis temporarilymissing
Proposal: Check anycables/cards
171 Com. errorbase card
Communicationwith the base cardis temporarilymissing
Proposal: Check anycables/cards
172 Com. errorsoftstart card
Communicationwith the softstartcard is temporarilymissing
Proposal: Check anycables/cards
173 Com. errorheating system2
Communicationwith accessory cardfor climate system 2temporarily missing
Proposal: Check anycables/cards
174 Com. errorheating system3
Communicationwith accessory cardfor climate system 3temporarily missing
Proposal: Check anycables/cards
175 Start-up ofsoftstart card
The softstart card isstarted up. Takesapprox 20 sec
Proposal: Check anycables/cards
176 Com. errorheating system4
Communicationwith accessory cardfor climate system 4temporarily missing
Proposal: Check anycables/cards
177 Com. erroraddition withmixing valve
Communicationwith accessory cardfor mixing valvecontrolledadditional heattemporarily missing
Proposal: Check anyconnections, cablesand cards.
178 Com. errorpool
Communicationwith accessory cardfor pooltemporarily missing
Proposal: Check anycables/cards
179 Com. error FLM Communicationwith accessory FLMis temporarilymissing
Proposal: Check anycables/cards
180 Freeze prot Freeze protectionactive. Occurs if the
Permits room heating
outdoortemperature isbelow 3 degreesand no heating ispermitted.
181 Failed periodicincrease
Periodic increasedid not reach thestop temperaturewithin 5 hours
182 Load monitoractivated
One or more powersteps cannot beactivated becausethe current in atleast one phase istoo high
Proposal: Check thephase load. It mayrequire a larger mainfuse.
183 Defrosting Defrosting inprogress
No action
184 Filter alarm Air filter needscleaning
Proposal: Clean the airfilter and restart theheat pump.
185 Anti-freezesupply air
Supply airtemperature (BT22)or the returntemperature fromthe heating battery(BT69) is below
Fans stopped andcompressor blocked. Anyblockage of theimmersion heater islifted.
- Check the watertemperature and theflow to the heatingbattery.
187 Com. error stepcontrolledadditional heat
Temporarycommunicationfault with accessorycard with stepcontrolledadditional heat
Proposal: Check anycables/cards
188 Com. faultsolar
Temporarycommunicationfault with accessorycard with solar
Proposal: Check anycables/cards
189 Com. errorHPAC
Temporarycomunication faultwith accessory cardwith HPAC
Proposal: Check anycables/cards
190 Com. errorground waterpump
Temporarycommunicationfault with accessorycard with groundwater pump
Proposal: Check anycables/cards
191 Com. errorHWC
Temporarycommunicationfault with accessorycard with hot watercirculation
Proposal: Check anycables/cards
192 Com. error 2pipe cooling
Temporarycommunicationfault with accessory
Proposal: Check anycables/cards
card with 2 pipecooling
193 Com. ErrorDEW
Temporarycommunicationfault with accessorycard DEW
Proposal: Check anycables/cards
194 Com. ErrorPCD4
Temporarycommunicationfault with accessorycard with 4 pipecooling
Proposal: Check anycables/cards
195 Com. errorFJ V M
Temporarycommunicationfault with
Proposal: Check anycables/cards
196 Com. room unitzone 1
Temporarycommunicationfault with roomunit zone 1
Proposal: Check anycables/cards
197 Com. room unitzone 2
Temporarycommunicationfault with roomunit zone 2
Proposal: Check anycables/cards
198 Com. room unitzone 3
Temporarycommunicationfault with roomunit zone 3
Proposal: Check anycables/cards
199 Com. room unitzone 4
Temporarycommunicationfault with roomunit zone 4
Proposal: Check anycables/cards
200 Com. errorinverter
201 Inverter alarm Inverter indicatesalarm
See chapterTroubleshooting inthe Service manualSEM NIBE F750 forfault specification.Alarm code stands inalarm log in F750 inbrackets.
202 Inverter fault Inverter indicatesalarm
See chapterTroubleshooting inthe Service manual:SEM NIBE F750 forfault specification.Alarm code stands inalarm log in F750 inbrackets.
203 Inverter errortype I
Permanent inveterfault type I
See alarm tab menu 6for error code. SeechapterTroubleshooting inthe Service manual:
SEM NIBE F750 forfault specification.
204 Inverter errortype II
Permanent inverterfault type II
See alarm tab menu 6for error code. SeechapterTroubleshooting inthe Service manual:SEM NIBE F750 forfault specification.
205 Inverter errortype III
Permanent inverterfault type III
See alarm tab menu 6for error code. SeechapterTroubleshooting inthe Service manual:SEM NIBE F750 forfault specification.
206 Perm. com.error HW-comfort
No communicationwith accessory cardfor 15 sec
Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
207 Com. error HW-comfort
No communicationwith the accessory
Proposal: Check anycables/cards
208 Com. error Acc-EB1
No communicationwith accessory cardfor 15 sec
VVM 500:- Check thecommunication cables- Check the dip switchsettings
209 Com. errorACC-EPxx
3 communicationfaults in a row withthe accessory card
Blocking addition
213 Inverter errortype I
Temporary inverterfault
Inverter blocked. If thealarm is active more than1h the alarm will passover to alarm 203(Permanent inverter faulttype II)
214 Inverter errortype II
Temporary inverterfault type II
Compressor blocked. Ifthe alarm is active morethan 1h or if the alarm isactivated 3 times in 2h,the alarm will pass overto alarm 204 (permanentinverter fault type II)
215 Inverter errortype III
Temporary Inverterfault type III
Compressor blocked. Ifthe alarm is active morethan 1h or if the alarm isactivated 3 times in 2h,the alarm will pass over
to alarm 204 (permanentinverter fault type II)
216 Inverter alarmtype II Incorrect inverter Manual reset in menu.
Compressor blocked.Suggestion:
- Upgrade firmware toat least version:
F1155,F1255
v7740R4
F2120 v431
F750 v7679R4
F730 v7696R6
- Replace the inverter
220 High pressurealarm
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor selected outdoorunit.
221 Low pressurealarm
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Comperssor blocked. See troubleshootingfor selected outdoorunit.
222 Motorprotectionalarm
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor selected outdoorunit.
223 Communicationalarm
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.Read more in: TDI20141023
224 Fan error Heat pump(selected outdoorunit) sending afault message tothe controller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
225 Flow/ return Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
227 Sensor fault Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
228 Defrost fault Heat pump(selected outdoor
Compressor blocked
unit) sending faultmessage to thecontroller
See troubleshootingfor the selectedoutdoor unit.
229 Shortoperationtimes forcompressor
Compressor hasstopped three timesin a row, short timeafter start
Compressor blocked - Open thermostaticvalves to ensurecirculation in theheating system- Bleed the climatesystem and heat pump- Check the filter inthe climate systemand possibleventilation- Check the start- andstop temperature forhot water charging- Check the heatingmedium pump- Check the coolingcircuit
230 Hot gas alarm Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
231 Phase sequenceerror
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
232 Lowevaporation
Heat pump(selected outdoorunit) sending faultmessage to thecontroller
Compressor blocked See troubleshootingfor the selectedoutdoor unit.
236 Sensor faultAZ2-BT20
Sensor notconnected/defective(exhaust air)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
237 Sensor faultAZ2-BT21
Sensor notconnected/defective(exhaust)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
238 Sensor faultAZ2-BT26
Sensor notconnected/defective(brine collector in)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
239 Sensor faultAZ3-BT20
Sensor notconnected/defective(exhaust)
240 Sensor faultAZ3-BT21
Sensor notconnected/defective(exhaust)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check anysensor and itsconnections
241 Sensor faultAZ3-BT26
Sensor notconnected/defective(brine collector in)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
242 Sensor faultAZ4-BT20
Sensor notconnected/defective(exhaust)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
243 Sensor faultAZ4-BT21
Sensor notconnected/defective(exhaust)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
244 Sensor faultAZ4-BT26
Sensor notconnected/defective(brine collector in)
Circulation pump (AZ1-GP2) in FLM blocked
Proposal: Check sensorand its connections
245 Com. error FLM2
No communicationtemporarily withthe accessory FLM 2
Accessory blocked Proposal:- Check fuses, powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
246 Com. error FLM3
No communicationtemporarily withaccessory FLM3
Accessory blocked Proposal:- Check fuses, powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
247 Com. error FLM4
No communicationtemporarily withthe accessory FLM4
Accessory blocked Proposal:- Check fuses, powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
248 Communicationfault No connection
between thedisplay unit and thebase card
Compressor and chargingpump stopped
- Checkt thecommunication cablebetween the displayunit and the base card
250 Com.error ACC-SMS 40
No communicationtemporarily withaccessory card
Accessory blocked See troubleshootingIHB SMS 40
251 Com. error ACCModbus 40
No communicationtemporarily withaccessory card
Accessory blocked See troubleshootingIHB SMS 40
252 Com.error slave No communicationtemporarily withslave heat pump
Compressor in slaveblocked
Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections.
Read more in: TDI20141023
253 Sensor faultQZ1-BT70
Sensor notconnected/defective(hot water flow)
Mixing valve closes Proposal: Check sensorand its connections
255 Motorprotectionalarm, brinepump
Motor protoectionon the brine pumptriggered
Current comperssorblocked. Automatic reset.
Bad circulation inbrine circuit:- check the brinepump- vent the brinesystem- check the particlefilter so its notclogged- check the brinepump cables andconnections with theheat pump
257 Com. errorACS45
No communicationtemporarily withaccessory card
Accessory blocked Proposal:- Check fuses, powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
258 Sensor faultEQ1-BT57
Sensor notconnected/defective(Cooling brine)
Proposal: Check sensorand its connections
259 Sensor faultEQ1-BT75
Sensor notconnected/defective(cooling flow heatpump)
Proposal: Check sensorand its connections
261 This alarm wasgenerated bythe heat pump
Temperaturedeviation on theheat exchangersensor (Tho-R1/R2)five times within 60minutes orcontinuously in 60minutes
Compressor blocked Proposal:- Defect sensor- Insufficient aircirculation- The heat exchangeris clogged- Defect control cardEB101- Too large amount ofrefrigerant
262 This alarm wasgenerated bythe heat pump
Overheat powertransistor
Compressor blocked 15V power to theinverters PCB isunstable.
263 This alarm wasgenerated bythe heat pump
Incorrect voltageout from theinverter
Compressor blocked Proposal:- Disruption onincoming power- Service valve closed- Not enoughrefrigerant amount- Compressor fault- Defect circuit board
for the inverter inEB101
264 This alarm wasgenerated bythe heat pump
Communicationbetween circuitboard for theinverter and controlcard is interupted
Compressor blocked Proposal:- Disruption on theconnection betweencards- Defect circuit boardfor the inverter inEB101- Defect control cardEB101
265 This alarm wasgenerated bythe heat pump
Continuous erroron power transistorduring 15 minutes
Compressor blocked Proposal:- Defect fan motor- Defect circuit boardfor the inverter inEB101
266 This alarm wasgenerated bythe heat pump
Low refrigerantamount
Compressor blocked Proposal:- Service valve closed- Loose contact onsensor (BT15, BT3)- Defect sensors (BT15,BT3)- Too low refrigerantamount
267 This alarm wasgenerated bythe heat pump
Inverter fault, bootfailure
Compressor blocked Proposal:- Defect circuit boardfor the inverter inEB101- Defect control cardEB101- Compressor fault
268 This alarm wasgenerated bythe heat pump
Overcurrent,inverter A/F module
Compressor blocked - Sudden powerfailure
270 Compressorpreheater isactive
Preheat Compressor is inpreheat mode untilBT29> B P8
270 PreheatingPreheat of thecompressor is active
Compressor is blocked.Automatic reset.
271 Cold outdoorair EB 101
EB 101 sendingmessage to thecontroller
Compressor blocked
272 Hot outdoor air EB 101 sendingmessage to thecontroller
Compressor blocked
273 HW-start andHW-stop havebeen reset tofactory settings
Adj u stment ofhotwater-settingsbecause of shortoperation time
HW-start and HW-stopfor economy and normalhave been reset tofactory settings
274 Compressorphaseoverloaded
Load monitor hascaused thecompressor not to
operate withdesired power.
275 Compressorphaseoverloadedlongtime
Load monitor hascaused thecompressor not tooperate withdesired power.
277 This alarm wasgenerated bythe heat pump
Sensor fault MHIexchanger
Compressor blocked Proposal:- Sensor fault heatexchanger F2040,THO-R1(BT16)/THO-R2EB101- Defect control card
278 This alarm wasgenerated bythe heat pump
Sensor fault MHIambient air
Compressor blocked Proposal:- Sensor fault outdoortemperature sensorTho-A(BT28) EB101- Defect control cardEB101
279 This alarm wasgenerated bythe heat pump
Sensor fault MHIdischarge
Compressor blocked Proposal:- Sensor fault hotgasBT14 (Tho-D) EB101- Defect control cardEB101
280 This alarm wasgenerated bythe heat pump
Sensor fault MHIsuction
Compressor blocked Proposal:- Sensor fault suctiongas BT17 (Tho-S)EB101- Defect control cardEB101
281 This alarm wasgenerated bythe heat pump
Sensor fault MHI LP Compressor blocked Proposal:- Sensor fault lowpressure sensor BP2(LTP) EB101- Defect control cardEB101- Error in refrigerantcircuit EB101
282 Comm.errorACC.-EQ1
Threecommunicationerror in a row hasoccurred towardsthe accessory cardACS 310
Accessory blocked.Temporarycommunication fault.
283 Comm. ErrorAcc.-EQ1
Permanentcommunicationerror ACS310
Accessory blocked Proposal:- Checkcommunication cables- Check dipswitchsettings
290 Fan alarmThe speed signal(tachometer signal)from the fanindicates that thefan speed is zero.
- Compressor stopped.- Immersion heaterstopped.- Defrost stopped.
Check the fan, cablesand connections andthe base card.
291 Charge pumpalarm The speed signal
(tachometer signal)from the chargepump indicates thatthe charge pumpspeed is zero.
- Compressor stopped.- Immersion heaterstopped.- Defrost stopped.
Check the chargepump, cables andconnections and thebase card.
294 Not compatibleheatpump The alarm occurs if
the outdoor unittoward VVM320 isnot a F2030-7,F2030-9, F2040-8,F2040-12.Faulty settings ofthe dip switches onthe circuit board.
HW blocked. Unit cannotbe restarted after powersupply was off.
Check the connectionsof the outdoor unitand dip switchsettings.Read more in: TDI20141023 , TDI20140813
299 Wrong versionPCA Base
Firmware versionon the base card(AA2) is too low forinvertercommunication.
Compressor blocked.Reset when the correctversion is detected.
Proposal:- Change base card(AA2)
301 Com. errorslave 1 No communication
temporarily withslave heat pump(EB101)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections.Read more in: TDI20141023
302 Com. errorslave 2
No communicationtemporarily withslave heat pump(EB102)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
303 Com. errorslave 3
No communicationtemporarily withslave heat pump(EB103)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
304 Com. errorslave 4
No communicationtemporarily withslave heat pump(EB104)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
305 Com. errorslave 5
No communicationtemporarily withslave heat pump(EB105)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
306 Com.error slave6
No communicationtemporarily withslave heat pump(EB106)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
307 Com. errorslave 7
No communicationtemporarily withslave heat pump(EB107)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
308 Com. errorslave 8
No communicationtemporarily withslave heat pump(EB108)
Slave compressor blocked Proposal: Check slavesettings in menu 5.2.2,communication cablesand its connections
325 Temperaturelimiter alarmfor defrostelement
Temperaturelimiter FD3 hastripped
Heatpump changes topassive defrost
- Check the filter andair flow
- The alarm can bereset in the alarmmenu but will returnwhen the defrostelement tries toconnect until thetemperature limiter isreset.
- Temperature limitershall be reset andfunction tested by aninstaller or servicetechnician
326 Fault in EB16Active defrostinghas failed threetimes in a row
Heat pump merges topassive defrost
- Check the filter andair flow- Checkt thecalibration of airspeed sensor BS1 inmenu 5.1.5.1- Checht thedefrosting elementEB16
340 Anti-freezesupply air
Supply airtemperature (BT22)is below 11° C .
HW load blocked.Returns automaticallywhen the supply airtemperature exceeds16°
- Bleed the supply airbattery.- Check the watertemperature and theflow to the heatingbattery.- If repeated alarms;verify that circulatedwater volume issufficient.
351 Uncertainsensor accuracy
Uncertain sensoraccuracy on thebrine sensors BT10and BT11. Thedifference is morethan 2K betweenthem at calibration.
GP2 switches to manualspeed if auto control isselected. Manual reset ofauto control in menu5.1.9
Proposal:- Check sensorsBT10and BT11 and their
352 Uncertainsensor accuracy
Uncertain sensoraccuracy on the HMsensors BT2 andBT3. The differenceis more than 2Kbetween them atcalibration.
GP1 switches to manualspeed if auto control isselected. Manual reset ofauto control in menu5.1.11
Proposal:- Check the sensorsBT2 and BT3 and theirconnections.
353 Uncertainsensor accuracy
Uncertain sensoraccuracy on the HM
GP1 switches to manualspeed if auto control is
Proposal:- Check the sensors
sensors BT3 andBT12. Thedifference is morethan 2K betweenthem at calibration.
selected. Manual reset ofauto control in menu5.1.11
BT3 and BT12 andtheir connections.
354 Slave EB101 Delta BT3-BT12 islarger than 2K aftercalibration
Changes from auto tomanual circulation pumpspeed. Uncertain sensoraccuracy.
355 Slave EB101 Delta BT3-BT63 islarger than 2K aftercalibration
Changes from auto tomanual circulation pumpspeed. Uncertain sensoraccuracy.
356 Failed sensorcalibration
Sensor calibrationdiffers more than2K between BT3and BT63
GP1 will go over tomanual operation
Check the flow in theheating system is notdisturbed by air orclosed ventilators.Restart the display.
372 Perm. com.error pool 2 No communication
with the accessorycard.
Accessory blocked. Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.
403 Sensor fault onEB101
Sensor faultdetected on EB101of the COM-interface MHI-EMMY
- Compressor blocked- If GP12 or GP1 isregulated by sensorEB101-BT3, they willswich to the manually setspeed.
Proposal:- Check thetemperature sensorand its connections.See also the wiringdiagram.
404 Sensor fault onEB101
Sensor faultdetected on EB101of the COM-interface MHI-EMMY
- Compressor blocked Proposal:- Check thetemperature sensorsand its connections.See also the wiringdiagram.
412 Sensor fault onEB101-BT12
Sensor faultdetected on EB101of the COM-interface MHI-EMMY
- Compressor blocked- If GP12 or GP1 isregulated by sensorEB101-BT3, they willswich to the manually setspeed.
Proposal:- Check thetemperature sensorand its connections.See also the wiringdiagram.
415 Sensor fault onEB101-BT15
Sensor faultdetected on EB101of the COM-interface MHI-EMMY
Compressor blocked Proposal:- Check thetemperature sensorand its connections.See also the wiringdiagram.
420 Inverter alarmtype II
Compressor stopped.Automatic reset 60 sec.
Proposal:- Check the main fuse
A temporarycommunicationalarm has occured.
after the inverter fault isreset. The compressorwill make a new attemptto start according tonormal start routine.
and the group fusesand their connections- Check thecommunication cableto the inverter and itsconnections.- If the alarm occursagain; contact aservice technician.
421 Inverter alarmtype II
A temporarycommunicationalarm has occured 3times within 2hours or has beencontinuously for 1h.
Compressor blocked.Manual reset in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- Check thecommunication cableto the inverter and itsconnections- Do a restart of theheat pump by turningit off through theoperating switch- If the alarm occursagain; contact aservice technician.
422 Inverter alarmtype II
A temporary alarmon the externalinput of theinverter hasoccured
Compressor stopped.Automatic reset 60 sec.after the inverter fault isreset. The compressorwill make a new attemptto start according tonormal start routine.
Proposal:- Check the main fuseand the group fusesand its connections- If the fault occursagain; contact aservice technician
423 Inverter alarmtype II
A temporary alarmon the externalinput of theinverter hasoccurred 3 timeswithin 2 hours orthe input has beencontinuouslybroken for 1 hour.
Compressor blocked.Manual reset in menu.
Proposal:- Check thecommunication cableon the external inputof the inverter- Check the main fuseand the group fuses- Restart the heatpump by turning it offthrough the operationswitch- If the fault occursagain; contact aservice technician
425 Triggeredpressure switch High pressure
switch or lowpressure switch istriggered.
Compressor blocked Bad circulation inheating system or lackofrefrigerant/problem inrefrigerant circuit.
Suggestions:
- Vent the heatpumpand heatingsystem.
- Open all thermostatson the radiators.
- Check and cleanfilters/strainers.
- Check thechargepump.
- Check thatpressureswitches arecorrect wired.
Problem in refrigerantcircuit:
- Call a certifiedrefrigerationtechnician.
426 Inverter alarmtype III
A temporarily faultin the inverter hasoccur.
Automatically reset 30minutes after theinverter fault iscorrected. Compressorstopped.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
427 Inverter alarmtype III
A temporaryinternal fault in theinverter hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.
Compressor blocked.Manual reset in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to brekthe power.- If the alarm occursagain; contact aservice technician.
428 Inverter alarmtype III A temporary
internal fault in theinverter hasoccurred.
Compressor stopped.Automatic reset 60 sec.after the inverter alarmhas been corrected.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
1 phase inverter:Check thecondensator
429 Inverter alarmtype II A temporary
internal fault in theinverter hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.
Compressor blocked.Reset manually in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occurs
again; contact aservice technician.
1 phase inverter:Check thecondensator
430 Inverter alarmtype I
Phase voltage tothe inverter hastemporarily beentoo high.
Automatic reset 60 sec.after the fault iscorrected. Compressorstopped.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
431 Inverter alarmtype I
Phase voltage tothe inverter hastemporarily beentoo high more than1 hour.
Reset manually in menu.Compressor blocked.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
432 Inverter alarmtype I
Phase voltage tothe inverter hastemporarily beentoo low.
Automatic reset 60 sec.after the fault iscorrected.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
433 Inverter alarmtype I
Phase voltage tothe inverter hasbeen too low,below 180V inmore than 1 hour.
Compressor blocked.Reset manually in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
434 Inverter alarmtype I
A compressor phasehas temporarilybeen missing.
Compressor stopped.Automatic reset 60sec.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
435 Inverter alarmtype I
A compressor phasecontinuouslymissing to theinverter for anhour.
Compressor blocked.Reset manually in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
436 Inverter alarmtype II
A temporaryinternal fault in theinverter hasoccurred.
Compressor stopped.Automatic reset 60 sec.after the inverter fault.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occurs
again; contact aservice technician.
437 Inverter alarmtype II
A temporaryinverter fault in theinverter hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.
Compressor blocked.Manual reset in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
438 Inverter alarmtype II The inverter has
temporary reachthe maximumoperatingtemperaturebecause of poorcooling
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
Poor circulation in HMcircuit. Proposal:- Bleed the heat pumpand the climatesystem.- Check the particlefilter, so it is notclogged.- Openradiators/under floorheating thermostats.
439 Inverter alarmtype II The inverter has
temporary reachedmaximumoperatingtemperaturebecause of poorcooling 3 timeswithin 2 hours orbeen missingcontinuously in 1hour.
Compressor blocked.Reset manually in menu.
Poor circulation in HMcircuit. Proposal:- Bleed the heat pumpand the climatesystem.- Check the particlefilter, so it is notclogged.- Openradiators/under floorheating thermostats.- If the alarm occursagain; contact aservice technician.
440 Inverter alarmtype II
Max "power in" hastemporary been toohigh.
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
441 Inverter alarmtype II
Max "power in" hastemporary been toohigh 3 times within2 hours or beenmissingcontinuously for anhour.
Compressor blocked.Reset manually in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- If the alarm occursagain; contact aservice technician.
442 Inverter alarmtype II Inverter has
temporary reachedmax operating
Compressor stopped.Automatic reset 60 sec.
Poor circulation in HMcircuit.Proposal:
temperaturebecause of poorcooling.
after the inverter fault iscorrected.
- Bleed the heat pumpand the climatesystem.- Check the particlefilter, so it is notclogged.- Openradiators/under floorheating thermostats.
443 Inverter alarmtype II Inverter has
temporary reachedmax operatingtemperaturebecause of poorcooling 3 timeswithin 2 hours orbeen missingcontinuously in anhour.
Compressor blocked.Manual reset in menu.
Poor circulation in HMcircuit. Proposal:- Bleed the heat pumpand the climatesystem.- Check the particlefilter, so it is notclogged.- Openradiators/under floorheating thermostats.- If the alarm occursagain; contact aservice technician.
444 Inverter alarmtype II
A temporaryinternal fault hasoccurred in theinverter.
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
445 Inverter alarmtype II
A temporaryinverter fault hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.
Compressor blocked.Manual reset in menu.
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
446 Inverter alarmtype II
A compressor phasehas temporarilybeen missing.
Compressor stopped.Automatic reset 60 sec.after the phase has beenreset.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
447 Inverter alarmtype II
A phase hastemporarily beenmissing 3 timeswithin 2 hours orbeen missing
Compressor blocked.Manual reset in menu.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
continuously for 1hour.
448 Inverter alarmtype II
The compressor hastemporarily beenoperating withlower speed thanallowed minimumspeed.
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
449 Inverter alarmtype II
The compressor hastemporarily beenoperating withlower speed thanallowed minimumspeed, 3 timeswithin 2 hours orbeen missingcontinuously for 1hour.
Compressor blocked.Manual reset is possiblewhen the alarm hasdisappeared.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
450 Inverter alarmtype III
Not used function(false alarm)
- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
451 Inverter alarmtype III
Not used function(false alarm)
- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
452 Inverter alarmtype II
Power out frominverter tocompressor hastemporarily beentoo high.
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
453 Inverter alarmtype II
Power out frominverter tocompressor hastemporarily beentoo high 3 timeswithin 2 hours orbeen missingcontinuously in 1hour.
Compressor blocked.Manual reset in menu.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
454 Inverter alarmtype II
Temporary too highoutput from theinverter hasoccurred.
Compressor stopped.Automatic reset 60 sec.after the inverter hasoccurred.
- Check the main fuseand the group fusesand their connections.- If the fault occurs
again; contact aservice technician.
455 Inverter alarmtype II
Temporary too highoutput from theinverter hasoccurred 3 timeswithin 2 hours orbeen missingcontinuously in 1hour.
Compressor blocked.Manual reset in menu.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
460 Inverter alarmtype II
(Only 1-phase) Toohigh "power in" toinverter hastemporarilyoccurred. Candepend on lowincomming power(> 1 98 VAC)
Compressor stopped.Automatic reset 60 sec.after the inverter fault iscorrected.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
461 Inverter alarmtype II
(Only 1-phase) Toohigh "power in" toinverter hastemporarilyoccurred 3 timeswithin 2 hours orbeen missingcontinuously in 1hour. Can dependon low incommingpower (> 1 98
Compressor blocked.Manual reset in menu.
- Check the main fuseand the group fusesand their connections.- If the fault occursagain; contact aservice technician.
468 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
469 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
470 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to break
the power.- If the alarm occursagain; contact aservice technician.
471 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
472 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
473 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
474 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
475 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
476 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
477 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
478 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
479 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
480 Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
481 Inverter alarmtype III
Not used function(false alarm)
Proposal:- Check the main fuseand the group fusesand their connections.
- Restart the heatpump through thepower switch to breakthe power.- If the alarm occursagain; contact aservice technician.
995 External alarm An alarm accordingto chosen on theAUX - entrance.
Only information.A u tomatic resetw h enclosing the entrance is
- Check possibleexternal connectionfunction.
996 Blocked External additionheat blockedthrough AUX -
Automatic reset whenclosing over the entranceis broken. Additionalheat blocked.
997 Compressorblocked External
compressor blockedthrough AUX -
Automatic reset whenclosing over the entranceis broken. Compressorblocked.
998
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