Hitachi RPC-5.0FSR - Page 50

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A10762300A-rev.1
Alarm(Troubleshooting)CodeTable
Code
No.
Category NatureofProblem LikelyCause
01 IndoorUnit
Activationofaprotectiondevice
(Floatswitch)
Activationoftheoatswitch;(Highwaterlevelpresentin
thedrainpan.)Aproblemexistsinthepiping.
02 OutdoorUnit
Activationofprotectiondevice;
(ExceptforAlarmCode:41,42)
HighPressureCut;(R410A:(4.15MPa)),fanmotorlockup
duringtheoutdoorunitcoolingoperation.
03 Communication
Communicationfailurebetween
indoorandoutdoorunits
Incorrectwiring,looseterminals,disconnectedwiringora
blownfuse.
04-09 Problemwiththeoutdoorunit;(Refertothe"InstallationandMaintenanceManual"foroutdoorunits.)
11
Sensoron
IndoorUnit
InletAirThermistorfailure
Looselyconnected,disconnected,orasevered
connection.
12 OutletAirThermistorfailure
13 FreezeProtectionThermistorfailure
14 GasPipingThermistorfailure
19 FanMotor ProblemwithIndoorFan
Fanmotorlockup,fanmotorprotectioncontroldevicefor
indoorunitactivated.
20-29 Problemwiththeoutdoorunit;(Refertothe"InstallationandMaintenanceManual"foroutdoorunits.)
31
System
Incorrectcapacitysettingforindoor
andoutdoorunits.
Incorrectcapacitycodesettingforcombination,excessive
orinsu󰀩cienttotalindoorunitcapacitycode.
32
Incorrectsettingofotherindoorunit
number
Problemwithadi󰀨erentIndoorUnitinthesamerefrigerant
cycle;(Failureatthepowersupply,defectivePCB).
35 Incorrectsettingofindoor Indoorunitnumberduplicatedinsamerefrigerantgroup.
36 Incorrectindoorunitcombination
Indoorunitisdesignedforotherrefrigerant;(R22or
R407C).
38-59 Problemwiththeoutdoorunit;(Refertothe"InstallationandMaintenanceManual"fortheoutdoorunit.)
b0
System
Incorrectsettingforunitcapacity Incorrectsettingforunitcapacity
b1
Incorrectsettingofunitand
refrigerantcyclenumber
Unitnumberorrefrigerantcycle> 64
b5
Incorrectsettingofindoorunit
numberforH-LINKtype
Interconnectedindoorunitsarenotsupporting
H-LINKII> 17
EE Compressor Compressorprotectionalarm
Thisalarmcodedisplayswhenthealarmssuchas
damagetothecompressoroccurthreetimeswithinasix
hourperiod.
DoNOToperatetheairconditioningjusttorunchecksonelectricalwiringuntilpreparationsfortheTestRun
phaseiscompleted.
NOTICE
●Whentheindicator“ ”asheseveryfourseconds,thereisacommunicationfailurebetweentheindoor
unitandthewiredcontroller(looseconnector,disconnectedorincorrectwiring,oraseveredconnection).
●Theindicationofthealarmcode“EE”meansseriousabnormalitytoburnoutthecompressor.
●Inthecaseoftheincorrecttransmissionwiringbetweenindoorunitsforthetwinandthetriplecombination,
thefollowingfailurewilloccurduringthetestrun.Rechecktheconnectionofthetransmissionbetween
indoorunitsandreconnectwiringscorrectly.
Failure:ThetransmissionerrorisNOTindicatedonthewiredcontroller.No.1indoorunitwillbeoperated.
However,otherindoorunits(No.2andNo.3)willNOTbeoperated.
Referto“Installation&MaintenanceManual”oftheoutdoorunitconnectedtotheindoorunit.
 ForUTOPIASeries:Inthecaseofthetwin,tripleandquadcombination,checktheairowtemperatureof
eachindoorunit.Ifthereisalargedi󰀨erenceintheairowtemperaturebetweenthemainunitandsub
unit(s)(cooling:morethanapprox.10deg.,heating:morethanapprox.20deg.),theremaybeafailurein
therefrigerantpipingwork.Thus,rechecktherefrigerantpiping.