alarm overzicht - nibe.eu · automatic reset proposal: check the sensor and its connections. see...

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.


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


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)


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.


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


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


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


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.


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.



Sensor notconnected/defective(supply sensor,heating system 2)

Control on return sensor(EP21-BT3)




Control on return sensor(EP22-BT3)




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






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:


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.


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).


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.


No communiationwith the accessorycard.


75 Perm. com.error base card No communication

with the base card(AA26).


Check thecommunication circitsconnections on htebase-, input- anddisplay card.




77 Accessory blocked.

Perm. com.error additivewith shunt


Proposal:- Check the powersupply leading to theaccessory card.- Check thecommunication cablesleading to theaccessory card.- Check the setting ofthe dipswitch.

78 Perm. com.error pool



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.


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.


90 Perm. com.faultgroundwaterpump

Permanentcommunicationfault with theaccessory card forgroundwaterpump.Communicationcables to the cardare incorrect orincorrectlyinstalled.Fault in thecommunicationcircuits in theaccessory-, input- ordisplay card.


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.


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.


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.


94 Perm. com.error PCD4

Permanentcommunicationfault with the


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



103 Sensor faultBT3



104 Sensor faultBT4



105

Sensor faultBT5



106 Sensor faultBT6



107 Sensro faultBT7


Proposal: Check anysensors connections

108 Sensor faultBT8



109 Sensor faultBT9



110 Sensor faultBT10

































140

Compressorphase 1 missing

Compressor phase 1has 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


172 Com. errorsoftstart card

Communicationwith the softstartcard is temporarilymissing


173 Com. errorheating system2

Communicationwith accessory cardfor climate system 2temporarily missing





175 Start-up ofsoftstart card

The softstart card isstarted up. Takesapprox 20 sec





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


179 Com. error FLM Communicationwith accessory FLMis temporarilymissing


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


188 Com. faultsolar

Temporarycommunicationfault with accessorycard with solar


189 Com. errorHPAC

Temporarycomunication faultwith accessory cardwith HPAC


190 Com. errorground waterpump

Temporarycommunicationfault with accessorycard with groundwater pump


191 Com. errorHWC

Temporarycommunicationfault with accessorycard with hot watercirculation


192 Com. error 2pipe cooling

Temporarycommunicationfault with accessory


card with 2 pipecooling

193 Com. ErrorDEW

Temporarycommunicationfault with accessorycard DEW


194 Com. ErrorPCD4

Temporarycommunicationfault with accessorycard with 4 pipecooling


195 Com. errorFJ V M

Temporarycommunicationfault with


196 Com. room unitzone 1

Temporarycommunicationfault with roomunit zone 1











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


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


Comperssor blocked. See troubleshootingfor selected outdoorunit.

222 Motorprotectionalarm


Compressor blocked See troubleshootingfor selected outdoorunit.

223 Communicationalarm


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


227 Sensor fault Heat pump(selected outdoorunit) sending faultmessage to thecontroller


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


231 Phase sequenceerror



232 Lowevaporation




Sensor notconnected/defective(exhaust air)

Circulation pump (AZ1-GP2) in FLM blocked

Proposal: Check sensorand its connections


Sensor notconnected/defective(exhaust)




Sensor notconnected/defective(brine collector in)








Proposal: Check anysensor and itsconnections

















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


247 Com. error FLM4

No communicationtemporarily withthe accessory FLM4


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


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




Sensor notconnected/defective(Cooling brine)



Sensor notconnected/defective(cooling flow heatpump)


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


Overheat powertransistor

Compressor blocked 15V power to theinverters PCB isunstable.


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


Communicationbetween circuitboard for theinverter and controlcard is interupted

Compressor blocked Proposal:- Disruption on theconnection betweencards- Defect circuit boardfor the inverter inEB101- Defect control cardEB101


Continuous erroron power transistorduring 15 minutes

Compressor blocked Proposal:- Defect fan motor- Defect circuit boardfor the inverter inEB101


Low refrigerantamount

Compressor blocked Proposal:- Service valve closed- Loose contact onsensor (BT15, BT3)- Defect sensors (BT15,BT3)- Too low refrigerantamount


Inverter fault, bootfailure

Compressor blocked Proposal:- Defect circuit boardfor the inverter inEB101- Defect control cardEB101- Compressor fault


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.


Sensor fault MHIexchanger

Compressor blocked Proposal:- Sensor fault heatexchanger F2040,THO-R1(BT16)/THO-R2EB101- Defect control card


Sensor fault MHIambient air

Compressor blocked Proposal:- Sensor fault outdoortemperature sensorTho-A(BT28) EB101- Defect control cardEB101


Sensor fault MHIdischarge

Compressor blocked Proposal:- Sensor fault hotgasBT14 (Tho-D) EB101- Defect control cardEB101


Sensor fault MHIsuction

Compressor blocked Proposal:- Sensor fault suctiongas BT17 (Tho-S)EB101- Defect control cardEB101


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










306 Com.error slave6









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


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.


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.


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


- Compressor blocked Proposal:- Check thetemperature sensorsand its connections.See also the wiringdiagram.

412 Sensor fault onEB101-BT12


- 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


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.


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.


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


A temporary alarmon the externalinput of theinverter hasoccurred 3 timeswithin 2 hours orthe input has beencontinuouslybroken for 1 hour.


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.


A temporaryinternal fault in theinverter hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.


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.


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.


Phase voltage tothe inverter hastemporarily beentoo high more than1 hour.

Reset manually in menu.Compressor blocked.



Phase voltage tothe inverter hastemporarily beentoo low.

Automatic reset 60 sec.after the fault iscorrected.



Phase voltage tothe inverter hasbeen too low,below 180V inmore than 1 hour.




A compressor phasehas temporarilybeen missing.

Compressor stopped.Automatic reset 60sec.



A compressor phasecontinuouslymissing to theinverter for anhour.




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



A temporaryinverter fault in theinverter hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.



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.


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.


Max "power in" hastemporary been toohigh.




Max "power in" hastemporary been toohigh 3 times within2 hours or beenmissingcontinuously for anhour.



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.


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.


A temporaryinternal fault hasoccurred in theinverter.




A temporaryinverter fault hasoccurred 3 timeswithin 2 hours orcontinuously in 1hour.




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.


A phase hastemporarily beenmissing 3 timeswithin 2 hours orbeen missing



continuously for 1hour.


The compressor hastemporarily beenoperating withlower speed thanallowed minimumspeed.




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.



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.



- 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.


Power out frominverter tocompressor hastemporarily beentoo high.




Power out frominverter tocompressor hastemporarily beentoo high 3 timeswithin 2 hours orbeen missingcontinuously in 1hour.




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



Temporary too highoutput from theinverter hasoccurred 3 timeswithin 2 hours orbeen missingcontinuously in 1hour.




(Only 1-phase) Toohigh "power in" toinverter hastemporarilyoccurred. Candepend on lowincomming power(> 1 98 VAC)




(Only 1-phase) Toohigh "power in" toinverter hastemporarilyoccurred 3 timeswithin 2 hours orbeen missingcontinuously in 1hour. Can dependon low incommingpower (> 1 98











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.




























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.

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

alarm overzicht - nibe.eu · automatic reset proposal: check the sensor and its connections. see...

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