Bosch Climate 5000 Series User manual

Bosch DuctlessAirConditioner/HeatPumpOutdoorUnit
Climate5000Series
SingleZone(Regular,HyperHeat,LightCommercial)ODU
ServiceManual

2|BoschClimate5000SeriesDuctlessAirConditioner/HeatPumpOutdoorUnit ServiceManual
04.2020|BoschThermotechnologyCorp.Datasubjecttochange

ServiceManual BoschClimate5000SeriesDuctlessAirConditioner/HeatPumpOutdoorUnit |3
BoschThermotechnologyCorp.|04.2020 Datasubjecttochange
TableofContents
1 KeytoSymbolsandSafetyInstructions 4
1.1 KeytoSymbols 4
1.2 Safety 4
2 PartNamesandModelNumbers 6
2.1 ModelNumbers 6
3 DimensionsandClearances 7
4 InstallationDetails 8
4.1 TorqueRequirements 8
4.2 ConnectingtheCables 8
4.3 PipeLengthandElevation 8
4.4 FirstTimeInstallation 8
4.5 AddingtheRefrigeranttoanExistingSystem 9
4.6 Re-Installation/IndoorUnitNeedstobeRepaired 9
4.7 Re-InstallationWhiletheOutdoorUnitNeedstobeRepaired 10
4.8 OperationCharacteristics 11
5 ElectronicFunctions 12
5.1 Abbreviation 12
5.2 DisplayFunction 12
5.3 MainProtection 12
5.4 OperationModesandFunctions 13
6 ErrorCodes 18
6.1 ErrorCodes-WallMountedIndoorUnit 18
6.2 ErrorCodes-4-WayCassetteIndoorUnit 19
6.3 ErrorCodes- DuctedIndoorUnit 20
6.4 QuickCheckbyErrorCodes 21
7 WiringDiagrams 22
7.1 ODUPCB&IPM 22
7.2 IndoorWiringDiagram 33
7.4 OutdoorWiringDiagram 36
8 Diagnosis &Solution 41
8.1 EEPROMparametererror(E0/F4) 41
8.2 Indoor/outdoorunit’scommunication(E1) 42
8.3 Zerocrossingdetectionerror(E2) 45
8.4 Fanspeedhasbeenoutofcontrol(E3/F5) 46
8.5 Opencircuitorshortcircuitoftemperaturesensor 48
(E4/E5/F1/F2/F3/P7) 48
8.6 RefrigerantLeakageDetection(EC) 49
8.7 Water-levelAlarmMalfunction(EE) 50
8.8 Overloadcurrentprotection(F0) 51
8.9 IPMmalfunctionorIGBTover-strongcurrentprotection(P0) 52
8.10 Overvoltageortoolowvoltageprotection(P1) 55
8.11 HightemperatureprotectionofIPMmoduleor
compressor top (P2) 56
8.12 Invertercompressordriveerror(P4) 57
8.13 Lowpressureprotection(P6) 58
8.14 Hightemperatureprotectionofindoorcoilin
heating mode (J0) 59
8.15 Hightemperaturesensedatoutdoorcoil(J1) 60
8.16 Hightemperaturesensedatcompressordischargeline(J2) 61
8.17 PFCmoduleprotection(J3) 62
8.18 Communicationerrorbetweenoutdoorunitmain
PCBandIPM control(J4) 63
8.19 Highpressureswitchopen(J5) 64
8.20 Lowpressureswitchopen(P6/J6) 65
8.21 ACVoltageprotection(J8) 66
8.22 MainPartsCheck 67
9 DisassemblyGuide 73
9.1 Models:9KRegular:BMS500-AAS009-1CSXRA 73
9.2 Models:12KRegular:BMS500-AAS012-1CSXRA
9K&12KHyperHeat:BMS500-AAS009-1CSXHB,
BMS500-AAS012-1CSXHB 76
9.3 Models:18KRegular:BMS500-AAS018-1CSXRA 79
9.4 Models:18KHyperHeat:BMS500-AAS018-1CSXHB 82
9.5 Models:9K,12K&18KHyperHeat:
BMS500-AAS009-1CSXHB, BMS500-AAS012-1CSXHB,
BMS500-AAS018-1CSXHB 83
9.6 Models:24KRegular:BMS500-AAS024-1CSXRA
24KHyperHeat:BMS500-AAS024-1CSXHB
30K&36KLightCommercialforWallMountedIDU:
BMS500-AAS030-1CSXRB,BMS500-AAS036-1CSXRB
36KLightCommercialforDucted&CassetteIDU:
BMS500-AAS036-1CSXLB 84
9.7 Models:48K&60KLightCommercial:
BMS500-AAS048-1CSXLB, BMS500-AAS060-1CSXLB 87
9.8 AllModels 90

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1 Key toSymbolsandSafetyInstructions
1.1 KeytoSymbols
Warnings
WarningsinthisdocumentareidentiÀedbyawarningtriangle
printedagainstagraybackground.
Keywordsatthestartofawarningindicatethetypeandseriousness
oftheensuingriskifmeasurestopreventtheriskarenottaken.
ThefollowingkeywordsaredeÀnedandcanbeusedinthisdocument:
fDANGER indicatesahazardoussituationwhich,ifnotavoided,willresult
indeathorseriousinjury.
fWARNINGindicatesahazardoussituationwhich,ifnotavoided,could
resultindeathorseriousinjury.
fCAUTION indicatesahazardoussituationwhich,ifnotavoided,could
resultinminortomoderateinjury.
fNOTICEisusedtoaddresspracticesnotrelatedtopersonalinjury.
Importantinformation
Thissymbolindicatesimportantinformationwherethereisnoriskto
peopleorproperty.
1.2 Safety
Pleasereadsafetyprecautionsbeforeinstallation
Incorrectinstallationduetoignoringinstructionscancauseseriousdamageor
injury.
WARNING:ELECTRICALHAZARD
fDonotmodifythelengthofthepowersupplycordorusean
extensioncordtopowertheunit.
fDonotsharetheelectricaloutletwithotherappliances.
Improperorinsufficientpowersupplycancausefireor
electricalshock.
WARNING:INSTALLATIONREQUIREMENTS
fInstallationmustbeperformedbyalicensedcontractor,
andpertheinstructionsintheinstallationmanual.Improper
installationcancausewaterleakage,electricalshock,orfire.
fInNorthAmerica,installationmustbeperformedin
accordancewiththerequirementofNEC(NationalElectric
Code)andCEC(CanadianElectricCode)bylicensedand
qualifiedpersonnelonly.
fOnlycontactalicensedcontractorforrepairormaintenance
ofthisunit.
fOnlyusetheincludedaccessories,parts,andspecified
partsforinstallation.Usingnon-standardpartscancause
waterleakage,electricalshock,fire,andcancausetheunit
tofail.
fInstalltheunitinasolidlocationthatcansupporttheunit’s
weight.Ifthechosenlocationcannotsupporttheunit’s
weight,ortheinstallationisnotdoneproperly,theunitmay
dropandcauseseriousinjuryand/ordamage.
WARNING:
fThisproductcanexposeyoutochemicalsincludingLead
andLeadcomponents,whichareknowntotheState
ofCaliforniatocausecancerandbirthdefectsorother
reproductiveharm.Formoreinformationgotowww.
P65Warnings.ca.gov.

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WARNING:ELECTRICALHAZARD
fForallelectricalwork,followalllocalandnationalwiring
standards,regulations,andtheInstallationManual.
Thepowersupplytotheoutdoorunitrequiresaservice
disconnectattheunit. Onlyuseadedicatedcircuit. Never
shareapowersourceconnectedtothissystem.Insufficient
electricalcapacityordefectsinelectricalworkcancause
electricalshockorfire.
fForallelectricalwork,usethespecifiedcables.Connect
cablestightly,andclampthemsecurelytopreventexternal
forcesfromdamagingtheterminal.Improperelectrical
connectionscanoverheatandcausefire,andmayalso
causeshock.
fAllwiringmustbeproperlyarrangedtoensurethatthe
controlboardcovercancloseproperly.Ifthecontrolboard
coverisnotclosedproperly,itcanleadtocorrosionand
causetheconnectionpointsontheterminaltoheatup,
catchfire,orcauseelectricalshock.
fIncertainfunctionalenvironments,suchaskitchens,server
rooms,etc.,theuseofspeciallydesignedair-conditioning
unitsishighlyrecommended.
fIfthepowersupplycordisdamaged,itmustbereplaced
bythemanufacturer,itsserviceagentorsimilarlyqualified
personssuchasalicensedelectricianinordertoavoida
hazard.
fTheproductmustbeproperlygroundedatthetimeof
installation,orelectricalshockmayoccur.
CAUTION:BURNHAZARD
fForunitsthathaveanauxiliaryelectricheater,donot
installtheunitwithin1meter(3feet)ofanycombustible
materials.
fDonotinstalltheunitinalocationthatmaybeexposed
tocombustiblegasleaks.Ifcombustiblegasaccumulates
aroundtheunit,itmaycausefire.
fDonotoperateyourairconditionerinawetroomsuchasa
bathroomorlaundryroom.Toomuchexposuretowatercan
causeelectricalcomponentstoshortcircuit.
NOTICE:PROPERTYDAMAGE
fInstallcondensatedrainagepipingaccordingtothe
instructionsinthismanual.Impropercondensatedrainage
maycausewaterdamagetoyourhomeandproperty.
CAUTION:CONTAINS REFRIGERANT
fThisair-conditioningunitcontainsfluorinatedgases.For
specificinformationonthetypeofgasandtheamount,
pleaserefertotherelevantlabelontheoutdoorunititself.
fInstallation,service,maintenanceandrepairofthisunit
mustbeperformedbyacertifiedtechnician.
fProductremovalandrecyclingmustbeperformedbya
certifiedtechnician.
fIfthesystemhasaleak-detectionsysteminstalled,itmust
becheckedforleaksatleastevery12months.
fWhentheunitischeckedforleaks,properrecord-keepingof
allchecksisstronglyrecommended.

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2 PartNamesandModelNumbers
2.1 ModelNumbers
Voltage IndoorType Capacity IndoorUnits RegularOutdoorUnits HyperHeatOutdoorUnits
115V WallMounted 12k BMS500-AAS012-0AHWXB BMS500-AAS012-0CSXRB
208-230V WallMounted
9k BMS500-AAU009-1AHWXB BMS500-AAS009-1CSXRA BMS500-AAS009-1CSXHB
12k BMS500-AAU012-1AHWXB BMS500-AAS012-1CSXRA BMS500-AAS012-1CSXHB
18k BMS500-AAU018-1AHWXB BMS500-AAS018-1CSXRA BMS500-AAS018-1CSXHB
24k BMS500-AAU024-1AHWXB BMS500-AAS024-1CSXRA BMS500-AAS024-1CSXHB
30k BMS500-AAS030-1AHWXB BMS500-AAS030-1CSXRB
36k BMS500-AAS036-1AHWXB BMS500-AAS036-1CSXRB
208-230V Cassette
9k BMS500-AAU009-1AHCXB BMS500-AAS009-1CSXRA BMS500-AAS009-1CSXHB
12k BMS500-AAU012-1AHCXB BMS500-AAS012-1CSXRA BMS500-AAS012-1CSXHB
18k BMS500-AAU018-1AHCXB BMS500-AAS018-1CSXRA BMS500-AAS018-1CSXHB
24k BMS500-AAU024-1AHCXB BMS500-AAS024-1CSXRA BMS500-AAS024-1CSXHB
36k BMS500-AAU036-1AHCXB BMS500-AAS036-1CSXLB
48k BMS500-AAU048-1AHCXB BMS500-AAS048-1CSXLB
208-230V Ducted
9k BMS500-AAU009-1AHCXB BMS500-AAS009-1CSXRA BMS500-AAS009-1CSXHB
12k BMS500-AAU012-1AHCXB BMS500-AAS012-1CSXRA BMS500-AAS012-1CSXHB
18k BMS500-AAU018-1AHCXB BMS500-AAS018-1CSXRA BMS500-AAS018-1CSXHB
24k BMS500-AAU024-1AHCXB BMS500-AAS024-1CSXRA BMS500-AAS024-1CSXHB
36k BMS500-AAU036-1AHCXB BMS500-AAS036-1CSXLB
48k BMS500-AAU048-1AHCXB BMS500-AAS048-1CSXLB
60k BMS500-AAU048-1AHCXB BMS500-AAS048-1CSXLB
Table 1
ForSingleZoneOutdoorUnits,pleaserefertoSingleZoneOutdoor
ServiceManual.

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3 DimensionsandClearances
Figure 1
H
W
A
B
D
A
B
D
A
W
H
OutdoorModel OutdoorUnitDimensionsmm(in.) MountingDimensions
WxHxD Amm(in.) Bmm(in.)
BMS500-AAS009-1CSXRA 770x555x300(30.3x21.85x11.81) 487(19.2) 298(11.73)
BMS500-AAS012-0CSXRB,BMS500-AAS012-1CSXRA,BMS500-AAS009-1CSXHB,
BMS500-AAS012-1CSXHB 800x554x333(31.5x21.8x13.1) 514(20.24) 340(13.39)
BMS500-AAS018-1CSXRA,BMS500-AAS018-1CSXHB, 845x702x363(33.27x27.6x14.3) 540(21.26) 350(13.8)
BMS500-AAS024-1CSXRA,BMS500-AAS024-1CSXHB,BMS500-AAS030-1CSXRB,
BMS500-AAS036-1CSXRB,BMS500-AAS036-1CSXLB, 946x810x410(37.24x31.9x16.14) 673(26.5) 403(15.87)
BMS500-AAS048-1CSXLB,BMS500-AAS060-1CSXLB 952x1333x415(37.5x52.5x16.34) 634(24.96) 404(15.9)
Table 2
Figure 2
More than 60cm (23.6in)
More than 70cm (27.6in)
More than 30cm (11.8in)
More than 60cm (23.6in)
(Service space)
Fence or
obstacles
More than 30cm (11.8in)
Outdoor Unit Clearances

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4 InstallationDetails
4.1 TorqueRequirements
OuterDiameterofTube
mm(in.) TighteningTorque N•m(lbft) Max.Tightening TorqueN•m(lbft)
Ø6.35(Ø0.25”) 1,500(11lb•ft) 1,600(11.8lb•ft)
Ø9.52(Ø0.375”) 2,500(18.4lb•ft) 2,600(19.18lb•ft)
Ø12.7( Ø0.5”) 3,500 (25.8lb•ft) 3,600 (26.55lb•ft)
Ø16(Ø0.63”) 4,500 (33.19lb•ft) 4,700 (34.67lb•ft)
Table 3
4.2 Connectingthe Cables
ThepowercordshouldbeselectedaccordingtothefollowingspeciÀcationssheet.
fCabletype:SOOWtype
ApplianceAmps AWGWireSize
10 18
13 16
18 14
25 12
30 10
Table 4
Thecablesizeandthecurrentofthefuseorswitcharedeterminedbythe
maximumcurrentindicatedonthenameplatewhichislocatedonthesidepanelof
theunit.Pleaserefertothenameplatebeforeselectingthecable,fuseandswitch.
Recommended:Ameansofdisconnectingthepower,shouldbewithin10feetof
theoutdoorunit.
4.3 PipeLengthand Elevation
Capacity Pipesize
Liquidside
(in/mm) Gasside (in/mm)
9K 1/4"/Ɓ6.35 3/8"/Ɓ9.52
12K 1/4"/Ɓ6.35 1/2"/Ɓ12.7
18K
24K
3/8"/Ɓ9.52 5/8"/Ɓ15.9
30K
36K
48K
60K 3/8"/Ɓ9.52 3/4"/Ɓ19
Table 5
Capacity Precharged
length
(ft/m)
MaxPipe
Length
(ft/m)
Maxdifference
inheight
(ft/m)
Additionalcharge
foreachft
(oz)
9K
25/7.6
82/25 33/10 0.1612K
18K 98/30 66/20
24K 164/50 82/25
0.32
30K
36K
213/65 98/3048K
60K
Table 6
4.4 First Time Installation
4.4.1 AirPurgingwithVacuumPump
Figure 3
(Indoor Unit) (Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Manifold Valve
Compound Meter Pressure
Gauge
Handle Lo Handle Hi
-0.1MPa
Shut-Off Knob
Low Refrigerant
Manifold/Blue
Shut-Off Knob High
Charge/Refrigerant Hose
Vacuum
Pump
1. CompletelytightentheÁarenutsoftheindoorandoutdoorunits,conÀrm
thatboththeliquidserviceandgasservicevalvesaresettotheclosed
position.
2. Connecttherefrigerantmanifold,bluehosewiththepushpinofshut-off
knobofthelowsidetothegasservicevalveport.
3. Connecttherefrigerantmanifold,yellowhosetotheshut-offhighside
connectiontothevacuumpump.
4. Fullyopentheshut-offknoblowsideofthemanifoldvalve.
5. Operatethevacuumpumptoevacuate.
6. Performevacuationfor30minutesandcheckwhethertherefrigeration
lowsidepressuregaugeindicates-0.1Mpa(14.5Psi).Ifthemeterdoesnot
indicate-0.1Mpa(14.5Psi)afterevacuatingfor30minutes,itshouldbe
evacuated20minutesmore.Ifthepressurecan’tachieve-0.1Mpa(14.5Psi)
afterevacuating50minutes,pleasecheckiftherearesomeleakage
points.Fullyclosetheshut-offknoblowsideofthemanifoldandstopthe
operationofthevacuumpump.ConÀrmthatthegaugeneedledoesnotmove
(approximately5minutesafterturningoffthevacuumpump).

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7. Makesurethepressuredisplayinthepressureindicatorisalittlehigherthan
theatmosphericpressure.Thenremovethechargehosefromthegasservice
valve.
8. Fullyopentheliquidservicevalveandgasservicevalveandsecurelytighten
thecapofthegasservicevalve.Systemisnowevacuatedandcharged.
(EnsurethattheunitischargedperthedeÀnedspeciÀcationsshowneither
onthenameplateofoutdoorunitorEngineeringSubmittalSheet.).
Gasleakcheck(Usesoapbubblemethod):
Applysoapywateroraliquidneutraldetergentontheindoorunit
connectionsoroutdoorunitconnectionsbyasoftbrushtocheckfor
leakageoftheconnectingpointsofthepiping.Ifbubblescomeout,the
pipesareleaking.
4.5 AddingtheRefrigeranttoan ExistingSystem
Figure 4
(Indoor Unit) (Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Check Valve
Charging
Cylinder
Electronic Scale
OPEN CLOSE
Procedure
1. Connecttherefrigerantmanifold,bluesuctionhosetothegasservice
valve'sserviceport,opentheliquidservicevalveandthegasservicevalve.
Connecttherefrigerantmanifold,yellowhosetothevalveatthebottomof
thecylinder.
2. Purgetheairfromtherefrigerantmanifold,yellowhose.Openthevalveatthe
bottomofthecylinderandpressthecheckvalveontherefrigerantmanifold
topurgetheair.
CAUTION:CONTAINS REFRIGERANT
fLiquidrefrigerantcancausefrostbite.Handlewithcare.
3. Putthechargingcylinderontotheelectronicscaleandrecordtheweight.
4. Operatetheairconditionerincoolingmode.
5. Openthevalves(lowside)ontherefrigerantmanifoldandchargethesystem
withliquidrefrigerant.
6. Whentheelectronicscaledisplaystheproperweight(refertothegaugeand
thepressureofthelowside),turnofftherefrigerantlowsidevalveandthe
refrigerantcylindervalve.Thenturnofftheunittoremovethehosefromthe
gasservicevalve.
7. Replacevalvestemcapsontheserviceport.Useatorquewrenchtotighten
theserviceportcaptoatorqueof18N.m. Besuretocheckforgasleakage.
4.6 Re-Installation/IndoorUnitNeeds tobeRepaired
Collectingtherefrigerantintothe outdoor unit (passiverecovery)
Figure 5
(Indoor Unit) (Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Close
Close
Open
Procedure
1. RemovethevalvestemcapsandconÀrmthatboththeliquidandgasservice
valvesaresettotheopenedposition. Ifnotopened,useappropriatehex
wrenchtoopenthevalvestems.
2. Connectrefrigerantgaugelowsidehose(blue) tothegasservicevalve's
serviceport
3. Airpurgingoftherefrigerantmanifold,bluehose:Openthelowsidevalveof
manifoldslightlytopurgeairfromthehosefor5secondsandthencloseit
quickly.
4. Settheliquidservicevalvetothecloseposition.
5. Operatetheairconditioneratthecoolingcycleandstopitwhenthegauge
indicates0.1Mpa(14.5Psi).
6. Setthegasservicevalvetotheclosedpositionimmediately.Dothisquickly
sothatthegaugeendsupindicating0.3Mpa(43.5Psi)to0.5Mpa(72.5Psi).
Disconnecttherefrigerantmanifold,andtightentheliquidandgasservice
valve’sstemnuts.Useatorquewrenchtotightenthegasservicevalve's
serviceportcaptoatorqueof18N.m.Besuretocheckforgasleakage.

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4.7 Re-InstallationWhilethe OutdoorUnitNeedstobeRepaired
Evacuationforthewholesystem
Figure 6
(Indoor Unit) (Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Open
Open
Close
Vacuum Pump
Open
Procedure:
1. ConÀrmthatboththeliquidandgasservicevalvesaresettotheopened
position.
2. Connectthevacuumpumptogasservicevalve’sserviceport.
3. Evacuateforapproximatelyonehour.ConÀrmthattherefrigerantmanifold
lowsideindicates-0.1Mpa(14.5Psi).
4. Closethevalve(Lowside)onthechargeset,turnoffthevacuumpump,and
conÀrmthatthegaugeneedledoesnotmove(approximately5minutesafter
turningoffthevacuumpump).
5. Disconnectthechargehosefromthevacuumpump.
Refrigerantcharging
Figure 7
(Indoor Unit) (Liquid Side)
(Gas Side)
(Outdoor Unit)
Liquid Service Line
Gas Service Line
Open
Check Valve
Open
Charging
Cylinder
Electronic Scale
CLOSE
OPEN
Procedure:
1. Connectthechargehosetothechargingcylinder,opentheliquidandthe
gasservicevalve.Connectthechargehosewhichyoudisconnectedfromthe
vacuumpumptothevalveatthebottomofthecylinder.
2. Purgetheairfromthechargehose.Openthevalveatthebottomofthe
cylinderandpressthecheckvalveonthechargesettopurgetheair(be
carefuloftheliquidrefrigerant).
3. Putthechargingcylinderontotheelectronicscaleandrecordtheweight.
4. Openthevalves(Lowside)ontherefrigerantmanifoldandchargethesystem
withliquidrefrigerantIfthesystemcannotbechargewiththespeciÀed
amountofrefrigerant,orcanbechargedwithalittleatatime(approximately
150g(5.3oz)eachtime),operatingthesysteminthecoolingcycle;
however,onetimeisnotsufÀcient,waitapproximately1minuteandthen
repeattheprocedure.
5. Whentheelectronicscaledisplaystheproperweight,disconnectthecharge
hosefromthegasservicevalve’sserviceportimmediately.Ifthesystemhas
beenchargedwithliquidrefrigerantwhileoperatingthesystem,turnoffthe
systembeforedisconnectingthehose.
6. Mountthevalvestemcapsandtheserviceport.Usetorquewrenchtotighten
theserviceportcaptoatorqueof18N.m.Besuretocheckforgasleakage.

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4.8 OperationCharacteristics
COOLoperation HEAToperation DRY operation
RoomTemperature 63ºF-90ºF
17ºC-32ºC 32ºF-86ºF 0ºC-30ºC 50ºF-90ºF 10ºC-32ºC
Outdoor
Temperature
Regular
BMS500-AAS012-0CSXRB
BMS500-AAS009-1CSXRA
BMS500-AAS012-1CSXRA
BMS500-AAS018-1CSXRA
BMS500-AAS024-1CSXRA
-13ºF-122ºF
-25ºC-50ºC -13ºF-86ºF -25ºC-30ºC 32ºF-122ºF 0ºC-50ºC
HyperHeat
BMS500-AAS009-1CSXHB
BMS500-AAS012-1CSXHB
BMS500-AAS018-1CSXHB
BMS500-AAS024-1CSXHB
-22ºF-122ºF
-30ºC-50ºC -22ºF-86ºF -30ºC-30ºC 32ºF-122ºF 0ºC-50ºC
LightCommercial
BMS500-AAS030-1CSXRB
BMS500-AAS036-1CSXRB
BMS500-AAS036-1CSXLB
BMS500-AAS048-1CSXLB
BMS500-AAS060-1CSXLB
5ºF-122ºF
-15ºC-50ºC 5ºF-86ºF -15ºC-30ºC 32ºF-122ºF 0ºC-50ºC
Table 7
EquationtoconvertCelsiustoFahrenheit
(°F)=1.8x(°C)+32
NOTICE:
fIfthesystemisusedbeyondtheaboveconditions,certain
safetyprotectionfeaturesmaycomeintooperationand
causetheunittooperateabnormally.
fTheroomrelativehumidityshouldbelessthan80%.If
thesystemoperatesbeyondthisfigure,thesurfaceofthe
airconditionermayattractcondensation.Pleasesetthe
verticalairflowlouvertoitsmaximumangle(verticallytothe
floor),andsetHIGHfanmode.
fTheoptimumperformancewillbeachievedduringthis
operatingtemperaturezone.

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5 ElectronicFunctions
5.1 Abbreviation
T1:Indoorroomtemperature
T2:Coiltemperatureofevaporator
T3:Coiltemperatureofcondenser
T4:Outdoorambienttemperature
T5:Compressordischargetemperature
Ts: Roomtemperaturesetting
Td:Off-setvalue(Tdisanadvancedfeature)
5.2 DisplayFunction
5.2.1 Iconexplanationonindoordisplayboard.
Digitaldisplay:
Figure 8
for 3 seconds when:
• TIMER ON is set
• FRESH, SWING, TURBO, or SILENCE feature is turned on
for 3 seconds when:
• TIMER OFF is set
• FRESH, SWING, TURBO, or SILENCE feature is turned off
when defrosting (cooling & heating units)
when anti-cold air feature is turned on
when unit is self-cleaning (Single Zone system only)
when 8 ° C heating feature is turned on
Display window
display the temperature setting or room temperature.
When error occurs, it displays error code. For some
units, it can display the following functions:
defrost: when defrosting (cooling & heating units)
run: when the unit is operational
timer: when Timer is set
turbo: when Turbo feature is turned on
auto: when Auto mode is activated
turbo defrost run timer
Aguideonusingtheinfraredremoteisnotincludedinthisliterature
package.Aseparateuserguideisavailablefortheremoteoperations.
fDisplaymaylookdifferentdependingonIDUtype.
fDisplayisnotavailablewithCompactCassette(9K,12K&
18k)indoormodel.
fDuctedindoormodelmayhavedisplay;however,dueto
installationsetup,itmaynotbevisible.
fPleaseuseWiredWallThermostat(optionalaccessory)to
checksysteminformationeasily.
5.3 MainProtection
5.3.1 Threeminutesdelayatrestartforcompressor
1minutedelayforthe1sttimestart-upand3minutesdelayforothers.
5.3.2 Temperatureprotectionofcompressordischarge
Compressordischargetemp.T5>239°F(115°C)for5s,compressorstops.
5.3.3 Fanspeedisoutofcontrol
Whenindoorfanspeedrunstoolow(300RPM)forcertaintime,theunitwillstop
andtheLEDwilldisplaythefailure.
5.3.4 Invertermodule protection
TheInvertermodulehasaprotectionfunctionforcurrent,voltageandtemperature.
Iftheseprotectionshappen,thecorrespondingcodewilldisplayonindoorunitand
theunitwillstopworking.
5.3.5 Indoorfandelayopenfunction
Whentheunitstartsup,thelouverwillbeactiveimmediatelyandtheindoorfan
willopen7slater.Iftheunitisrunninginheatingmode,theindoorfanwillbealso
controlledbyanti-coldairfunction.
5.3.6 Compressorpreheatingfunctions
Preheatingpermittingcondition:
WhenT4(outdoorambienttemperature)37.4°F(3°C),thepreheatingfunction
willbeactivated.
5.3.7 Sensorprotectionatopencircuitandbreakingdisconnection.
Whenthere’sonlyonetemperaturesensormalfunction,thesystemwillkeep
workingbutshowtheerrorcode,incaseofanyemergencyuse.
Whenthere’smorethanonetemperaturesensormalfunctioning,thesystemwill
stopworking.

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5.4 OperationModesandFunctions
5.4.1 Fanmode
1. Outdoorfanandcompressorstop.
2. Temperaturesettingfunctionisdisabledandnosettingtemperatureis
displayed.
3. Indoorfancanbesettohigh/med/low/auto.
4. Thelouveroperatessameasincoolingmode.
5.4.2 Coolingmode
5.4.2.1 Compressorrunningrules
WhenT1-Ts<ŰT-3.6°F(2°C),thecompressorwillstop.
WhenT1-Ts>ŰT+0.9°F(0.5°C)thecompressorwillbeactivated.
ŰT5istheprogrammedparameteroftemperaturecompensation.This
parameterispresetatthefactory.
WhentheACruninmutemode,thecompressorwillrunwithlowfrequency.
Whenthecurrentismorethansettingvalue,thecurrentprotectionfunction
willbeactivated,andthecompressorwillstop.
5.4.2.2 Outdoorfanrunningrules
TheoutdoorunitwillrunatdifferentfanspeedsaccordingtoT4.Fordifferent
outdoorunits,thefanspeedsaredifferent.
5.4.2.3 Indoorfanrunningrules
Incoolingmode,indoorfanrunsallthetimeandthespeedcanbeselectedas
high,medium,lowandauto.
5.4.2.4 Condensertemperatureprotection
fTP3<T3<TP3+5,thecompressorfrequencywilldecreasetothe
lowerleveluntiltoF1andthenrunsatF1.IfTP3-3<T3<TP3,the
compressorwillkeeprunningatthecurrentfrequency.
fT3<TP3-3,thecompressorwillnotlimitthefrequencyand
resumetotheformerfrequency.
fT3>TP3+5for5seconds,thecompressorwillstopuntilT3<
TP3-3.
5.4.2.5 Evaporatortemperatureprotection
WhenEvaporatortemperatureislessthansettingvalue,thecompressorwill
stop.
5.4.3 Heatingmode
5.4.3.1 Compressoroperation
WhenT1-Ts>-ŰT3,thecompressorwillstop.
WhenT1-TS<-ŰT3-2.7°F(1.5°C)thecompressorwillbeon.
ŰT3istheprogrammedparameteroftemperaturecompensation.
WhentheACrunsinmutemode,thecompressorwillrunwithlowfrequency.
Whenthecurrentismorethanthesettingvalue,thecurrentprotection
functionwillbeactivatedandthecompressorwillstop.
5.4.3.2 Outdoorfanoperation
TheoutdoorunitwillberunatdifferentfanspeedaccordingtoT4.
Fordifferentoutdoorunits,thefanspeedsaredifferent.
5.4.3.3 Indoorfanoperation
Whenthecompressorison,theindoorfancanbesettohigh/med/low/autoand
theanti-coldfunctionhasthepriority.
fAnti-coldfunction:Theindoorfaniscontrolledbytheindoor
temperatureT1andindoorunitcoiltemperatureT2
Figure 9
T2
Setting fan speed
H
M+
M
L
Super slow
Fan off
TEL0+23- TE1
TEL0+21- TE1
TEL0+19- TE1
TEL0+17- TE1
TEL0+15- TE1
TEL0+13- TE1
TEL0+18- TE1
TEL0+16- TE1
TEL0+14- TE1
TEL0+12- TE1
TEL0+10- TE1
TEL0
IndoorRoomTemp.Condition IndoorFanSpeed
T119°C(66.2°F) ŰTE1=0
15°C(59°F)T118°C(64.4°F) ŰTE1=19°C-T1
(34.2°F-T1)
T1<15°C(59°F) ŰTE1=4°C(7.2°F)
Table 8
5.4.3.4 Defrostmode
SystemwillenterthedefrostmodeaccordingtothevalueofT3andthevalue
rangeofchangeinT3andalsothecompressorrunningtime.
Duringthedefrostmode,thecompressorwillrun,indoorandoutdoormotorwill
stopanddefrostindicatorlampoftheindoorunitwillbelighted
“”willbedisplayed.
IfanyoneofthefollowingitemsissatisÀed,thedefrostcyclewillÀnishandthe
systemwillturntonormalheatingmode.
fT3risestobehigherthanTCDE33.8°F(1°C).
fT3keepstobehigherthanTCDE35.6°F(2°C )for80seconds.
fThemachinehasrunfor15minutesindefrostingmode.

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5.4.3.5 Evaporatorcoiltemperatureprotection
Figure 10
TEstop
T2
Resume
Off
Decrease
TEdown
TEH2
Hold
Off:Compressorstops.
Decrease:Decreasetherunningfrequencytothelowerlevel.
Hold:Keepthecurrentfrequency.
Resume:Nolimitationforfrequency.
5.4.4 Auto-mode
Thismodecanbechosenwiththeremotecontrollerandthesettingtemperature
canbechangedbetween62°F~86°F(17°C~30°C)
Inautomode,themachinewillchoosecooling,heatingorfan-onlymodeaccording
toŰT(ŰT=T1-Ts).
ŰT=T1-Ts Runningmode
ŰT>3.6°F(2°C) Cooling
-3.6°F(-2°C)ŰT3.6°F(2°C) Fan-only
ŰT<-3.6°F(-2°C) Heating
Table 9
Indoorfanwillrunatautofanoftherelevantmode.
Thelouveroperatessameasinrelevantmode.Ifthemachineswitchesmode
betweenheatingandcooling,thecompressorwillkeepstoppingfor15minutes
andthenchoosemodeaccordingtoT1-Ts.IfthesettingtemperatureismodiÀed,
themachinewillchooserunningfunctionagain.
5.4.5 Dryingmode
IndoorfanspeedisÀxedatbreeze(lowfan)andcan’tbechanged.Thelouverangle
isthesameasincoolingmode.Allprotectionsareactiveandthesameasthatin
coolingmode.
5.4.6 Forcedoperationfunction
fForcedcoolingmode:Thecompressorandoutdoorfankeep
runningandtheindoorfanrunsatlowspeed.Afterrunning for 30
minutes, AC will turn toautomodewith75.2°F(24°C)setting
temperature.
fForcedautomode:Theactionofforcedautomodeisthesameas
normalautomodewith75.2°F(24°C)settingtemperature.
WhenACreceivessignals,suchasswitchon,switchoff,timeron,timer
off,modesetting,fanspeedsetting,sleepingmodesetting,followme
setting,itwillquittheforcedoperation.
5.4.7 Timerfunction
fTimingrangeis24hours.
fTimeron.Themachinewillturnonautomaticallywhenreachingthe
settingtime.
fTimeroff.Themachinewillturnoffautomaticallywhenreachingthe
settingtime.
fTimeron/off.Themachinewillturnonautomaticallywhenreachingthe
setting“on”time,andthenturnoffautomaticallywhenreachingthe
setting“off”time.
fTimeroff/on.Themachinewillturnoffautomaticallywhenreachingthe
setting“off”time,andthenturnonautomaticallywhenreachingthe
setting“on”time.
fThetimerfunctionwillnotchangethesystemoperationmode.
fThesystemwillquitthetimerfunctionwhenithasmalfunction.
5.4.8 Sleepfunction
fThesleepfunctionisavailableincooling,heatingorautomode.
fOperationprocessinsleepmodeisasfollows:
Whencooling,thesettingtemperaturerises1.8°F(1°C)(belowerthan
86°F(30°C))everyonehour,2hourslaterthesettingtemperaturestops
risingandtheindoorfanisÀxedatlowspeed.
Whenheating,thesettingtemperaturedecreases1.8°F(1°C)(behigher
than62.6°F (17°C))everyonehour,2hourslaterthe settingtemperature
stopsrisingandindoorfanisÀxedatlowspeed.(Anti-coldwindfunction
hasthepriority).
fOperationtimeinsleepmodeis7hours.After7hours,theACwillturn
offandsleepmodewillalsobeturnedoff.
fTimersettingisavailable

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5.4.9 Auto-restartfunction
Theindoorunitisequippedwithauto-restartfunction,whichiscarriedoutthrough
anauto-restartmodule.Incaseofasuddenpowerfailure,themodulememorizes
thesettingconditionsbeforethepowerfailure.Theunitwillresumetheprevious
operationsetting(notincludingswingfunction)automaticallyafter3minuteswhen
powerreturns.
Ifthememorizationconditionisforcedcoolingmode,theunitwillrunincooling
modefor30minutesandturntoautomodeas75.2°F(24°C)settingtemp.
Ifsystemisoffbeforepoweroffanditisrequiredtostartup,thecompressorwill
have1minutedelaywhenpoweredon.Inotherconditions,thecompressorwill
have3minutesdelaywhenrestarting.
5.4.10 Refrigerantleakagedetection
Withthisnewtechnology,thedisplayareawillshow“EC”whentheoutdoorunit
detectsrefrigerantleakage.Thisfunctionisonlyavailableincoolingmode.
5.4.11 Louverpositionmemoryfunction
Whenstartingtheunitagainaftershuttingdown,itslouverwillrestoretotheangle
originallysetbytheuser,butthepreconditionisthat theanglemustbewithinthe
allowablerange.Ifitexceeds,itwillmemorizethemaximum angleofthelouver.
Duringoperation,ifthepowerfailsortheendusershutsdowntheunitintheturbo
mode,thelouverwillrestoretothedefaultangle.
5.4.12 46.4°F(8°C)heating
Inheatingoperation,thepresettemperatureoftheairconditionercanbeas lowas
46.4°F(8°C),whichkeepstheroomtemperaturesteadyat 46.4°F(8°C)
andpreventshouseholditemsfromfreezingwhenthehouseisunoccupiedfora
longtimeinseverecoldweather.This46.4°F(8°C)heatingmodeisactivatedfrom
theremotecontrollerbypressingtheFPbutton.
5.4.13 Selfclean(applicabletoSingleZonesystemonly)
Forheatpumpmodelswhichareprovidedwiththisfunction,afterrunningin
coolingordryingmode,iftheuserpressesthe“SelfClean”buttononremote
controller,Àrstly,indoorunitrunsinfanonlymodeforawhile. Thentheunit
operatesinlowheatoperationandÀnallyrunsinfanonlyagain.Thisfunctioncan
keeptheinsideofindoorunitdryandpreventbreedingofmold.
5.4.14 Followme
1. IftheindoorPCBreceivesthesignalwhichresultsfrompressingthe
FOLLOWMEbuttononremotecontroller,thebuzzerwillemitasoundand
thisindicatesthefollowmefunctionisinitiated.ButwhentheindoorPCB
receivessignalwhichsentfromremotecontrollerevery 3minutes,the
buzzerwillnotrespond.Whentheunitisrunningwithfollowmefunction,the
PCBwillcontroltheunitaccordingtothetemperaturefromfollowmesignal,
andthetemperaturecollectionfunctionofroomtemperaturesensorwillbe
inactive,buttheerrordetectivefunctionofroomtemperaturesensorwillbe
stillvalid.
2. Whenthefollowmefunctionisavailable,thePCBwillcontroltheunit
accordingtotheroomtemperaturefromtheremotecontrollerandthesetting
temperature.
3. ThePCBwilltakeactiontothemodechangeinformationfromremote
controllersignal,butitwillnotbeaffectedbythesettingtemperature.
4. Whentheunitisrunningwithfollowmefunction,ifthePCBdoesn’treceive
anysignalfromremotecontrollerfor7minutesorpressingFOLLOWME
buttonagain,thefollowmefunctionwillbeturnedoffautomatically,andthe
temperaturewillcontroltheunitaccordingtotheroomtemperaturedetected
fromitsownroomtemperaturesensorandsettingtemperature.
5.4.15 Silenceoperation
Pressthe“silence”buttononremotecontrollertoinitiateSILENCEfunction.When
theSilencefunctionisactivated,thecompressorrunningfrequencywillkeeplower
thanF2(compressorfrequency)andtheindoorunitwillbringfaintbreeze,which
willreducethenoisetothelowestlevelandcreateaquietandcomfortableroom
for you.

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5.4.16 Pointcheckfunction(engineeringtroubleshootingmode)
PresstheLEDDISPLAYorLEDorMUTEbuttonoftheremotecontrollerthree
times,andthenpresstheAIRDIRECTIONorSWINGbuttonthreetimesinten
seconds,thebuzzerwillkeepringfortwoseconds.Theairconditionerwill
enterintotheinformationenquirystatus.YoucanpresstheLEDDISPLAYorAIR
DIRECTIONbuttontocheckthenextorfrontitem’sinformation.
WhentheACenterthe“informationenquiry”status,itwilldisplaythecodenamein
2seconds,thedetailsareasfollows.
Enquiryinformation Displayingcode Meaning
T1 T1 Indoorroomtemperature
T2 T2 Coiltemperatureofevaporator
T3 T3 Coiltemperatureofcondenser
T4 T4 Outdoorambienttemperature
T2B Tb Coiltemperatureofevaporator
TP TP Compressordischargetemperature
TH TH Compressorsuctiontemperature
TargetedFrequency FT TargetedFrequency
ActualFrequency FR ActualFrequency
Indoorfanspeed IF Indoorfanspeed
Outdoorfanspeed OF Outdoorfanspeed
EXVopeningangle LA EXVopeningangle
Compressorcontinuousrunningtime CT Compressorcontinuousrunningtime
Causesofcompressorstop ST Causesofcompressorstop
Reserve A0
Reserve A1
Reserve 0
Reserve 1
Reserve 2
Reserve 3
Reserve 4
Reserve 5
Reserve 6
Reserve L
Reserve A
Reserve U
Reserve T
Table 10

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WhentheACenterintoinformationenquirystatus,itwilldisplaycodevalueinnext
25s,thedetailsareasfollows:
Enquiryinformation Displayvalue Meaning Remark
T1,T2,T3,T4,T2B,TP,TH,
TargetedFrequency,
ActualFrequency
-1F,-1E,-1d,-1c,-1b,-1A -25,-24,-23,-22,-21,-2,0
1. Allthedisplayingtemperatureisactualvalue.
2. Allthetemperatureis°Cnomatterwhatkindof
remotecontrollerisused.
3. T1,T2,T3,T4,T2Bdisplayrange:-25~70, TP
displayrange:-20~130.
4. Frequencydisplayrange:0~159HZ.
5. Iftheactualvalueexceedstherange,itwill
displaythemaximumvalueorminimumvalue.
-19—99 -19—99
A0,A1,…A9 100,101,…109
b0,b1,…b9 110,111,…119
c0,c1,…c9 120,121,…129
d0,d1,…d9 130,131,…139
E0,E1,…E9 140,141,…149
F0,F1,…F9 150,151,…159
Indoorfanspeed
/Outdoorfanspeed
0OFF
1,2,3,4 Lowspeed,Mediumspeed,High
speed,Turbo Forsomebigcapacitymotors.
14-FF Actualfanspeed=Displayvalue turnsto decimalvalueandthen
multiply10.TheunitisRPM.
Forsomesmallcapacitymotors,
displayvalueisfrom14-FF(hexadecimal),the
correspondingfanspeedrangeisfrom
200-2550RPM.
EXVopeningangle 0-FF ActualEXVopeningvalue=Display valueturnstodecimalvalueand
thenmultiply2.
TheminopeninganglefortheEXVis0.Themax
openingangleforEXVaredifferentfordifferent
models.
Compressorcontinuous
runningtime 0-FF 0-255minutes Iftheactualvalueexceedstherange,itwilldisplay themaximumvalueorminimumvalue.
Causesofcompressorstop 0-99 Fordetailedmeaningplease
consultwithmanufacturer Decimaldisplay
Reserve 0-FF
Table 11
0-FFisahexidecimaldisplayvalue.NotOFF.

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6 ErrorCodes
Safety
WARNING:ELECTRICALHAZARD
fElectricitypowerisstillkeptincapacitorsevenifthepower
supplyisshutoff.Donotforgettodischargetheelectricity
powerincapacitorbeforeservicingthesystem.
Figure 11
Electrolytic Capacitors
(HIGH VOLTAGE! CAUTION!)
6.1 ErrorCodes -WallMountedIndoor Unit
Number Cause RUNIndicatorFlashes TIMERIndicator ErrorCode
1 IndoorunitEEPROMerror 1 OFF E0
2 Communicationerrorbetweenindoorunitandoutdoorunits 2 OFF E1
3 Indoorfanspeederror 4 OFF E3
4 IndoorReturnairtemperaturesensorerror 5 OFF E4
5 Indoorcoiltemperaturesensorerror 6 OFF E5
6 Lowrefrigerant 7OFFEC
7 Outdoorcurrentoverloadsensed 1 LIT F0
8 Outdoorambienttemperaturesensorerror 2 LIT F1
9 Outdoorcoiltemperaturesensorerror 3 LIT F2
10 Compressordischargetemperaturesensorerror 4 LIT F3
11 OutdoorunitEEPROMerror 5 LIT F4
12 Outdoorunitfanspeederror 6 LIT F5
13 Indoorcoiloutlettemperaturesensorerror 7 LIT F6
14 InvertermoduleIPMerror 1 FLASH P0
15 HighorLowvoltageprotection 2 FLASH P1
16 Outdoorunitlowtemperaturelockout 4 FLASH P3
17 Compressordriveerror 5 FLASH P4
18 ModeconÁict 6FLASHP5
Table 12
IfyouseeanerrorcodenotdisplayedinTable12,contactthe
manufacturerastheerrordisplayedisfordevelopmentpurposeonly.
Forothermodels,pleaseconnectdischargeresistance(approx.100Ƅ40W)
between+,-terminalsoftheelectrolyticcapacitorontheoppositesideofthe
outdoorPCB. Ascrewdriverwillalsoworkasaresistiveelement.
ForreferencethemostcommonerrorcodesareE1,P0,andP3.

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6.2 Error Codes-4-WayCassette IndoorUnit
Number Cause Operationindicator
Áashes Timerindicator ErrorCode
1 IndoorEEPROM(ElectricallyErasableProgrammableRead-OnlyMemory)error 1 Off E0
2 Indoorandoutdoorunitcommunicationmalfunction 2 Off E1
3 Indoorfanspeedmalfunction 4 Off E3
4 Indoorroomtemperaturesensorerror 5 Off E4
5 Evaporatorcoiltemperaturesensorerror 6 Off E5
6 Refrigerantleakdetectionsystemmalfunction 7 Off EC
7 Waterlevelalarmmalfunction 8 Off EE
8 Dualindoorunit(twinmodelonly)communicationmalfunction 9 Off E8
9 Othertwinmodelmalfunction 10 Off E9
10 Overloadprotection 1 On F0
11 Outdoortemperaturesensorerror 2 On F1
12 Outdoorcondenserpipesensorerror 3 On F2
13 Dischargeairtemperaturesensorerror 4 On F3
14 OutdoorEEPROM(ElectricallyErasableProgrammableRead-OnlyMemory)error 5 On F4
15 Outdoorfanspeed(DCfanmotoronly)malfunction 6 On F5
16 Auto-liftingpanelcommunicationerror 8 On F7
17 Auto-liftingpanelmalfunction 9 On F8
18 Auto-liftingpanelisopen 10 On F9
19 InvertermoduleIPMprotection 1 Flash P0
20 High/Lowvoltageprotection 2 Flash P1
21 Compressortopoverheatingprotection 3 Flash P2
22 Outdoorlowtemperatureprotection 4 Flash P3
23 Compressordriveerror 5 Flash P4
24 ModeconÁict 6 Flash P5
25 Compressorlow-pressureprotection 7 Flash P6
26 OutdoorIGBTsensorerror 8 Flash P7
Table 13
9k~18kmodelsdonothavedisplaytoshowerrorcodesandOperation
andTimerIndicatorwillturnon/offandorÁashaccordingtoabove
tabletoshowsystemmalfunction.

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6.3 ErrorCodes- DuctedIndoorUnit
NOTICE
fIfbelowerrorcodesappear,pleaseturnoffthesystemand
contactanAuthorizedServiceProvider.
Number Cause Operationindicator
Áashes Timerindicator ErrorCode
1 IndoorEEPROM(ElectricallyErasableProgrammableRead-OnlyMemory)error 1 Off E0
2 Indoorandoutdoorunitcommunicationmalfunction 2 Off E1
3 Indoorfanspeedmalfunction 4 Off E3
4 Indoorroomtemperaturesensorerror 5 Off E4
5 Evaporatorcoiltemperaturesensorerror 6 Off E5
6 Refrigerantleakdetectionsystemmalfunction 7 Off EC
7 Waterlevelalarmmalfunction 8 Off EE
8 Dualindoorunit(twinmodelonly)communicationmalfunction 9 Off E8
9 Othertwinmodelmalfunction 10 Off E9
10 Overloadprotection 1 On F0
11 Outdoortemperaturesensorerror 2 On F1
12 Outdoorcondenserpipesensorerror 3 On F2
13 Dischargeairtemperaturesensorerror 4 On F3
14 OutdoorEEPROM(ElectricallyErasableProgrammableRead-OnlyMemory)error 5 On F4
15 Outdoorfanspeed(DCfanmotoronly)malfunction 6 On F5
16 InvertermoduleIPMprotection 1 Flash P0
17 High/Lowvoltageprotection 2 Flash P1
18 Compressortopoverheatingprotection 3 Flash P2
19 Outdoorlowtemperatureprotection 4 Flash P3
20 Compressordriveerror 5 Flash P4
21 ModeconÁict 6 Flash P5
22 Compressorlow-pressureprotection 7 Flash P6
23 OutdoorIGBTsensorerror 8 Flash P7
24 Indoorunitcommunicationmalfunction 11 On FA
Table 14