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GE - General Electric GE 1G09CB1BEA Caliber Series 115V 9,000 BTU Ductless Mini-Split Outdoor Heat Pump

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Service Manual

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The file format is pdf, 56 pages, you can download this manual here .

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Before troubleshooting or servicing equipment, review equipment installation guides and conrm ALL installation
requirements & specications have been met. Including, but not limited to: wiring, clearance, ducting (where applicable),
power, and line set requirements. Correct any installation issues before continuing.
Single Zone
Service Manual
Ductless Split Heat Pumps
1G09CB1BEA / GS09WB1BEA
1G12CB1BEA / GS12WB1BEA
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TABLE OF CONTENTS
10-16-25: Edition release.
Revision History
Introduction ................................................................................................................ A1
Outdoor Units
............................................................................................................. B1
Highwall Indoor Units
.................................................................................................. C1
Troubleshooting & Reference
...................................................................................... D1
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INTRODUCTION
A1
ENGLISH
INTRODUCTION
SAFETY & PRECAUTIONS .......................................................................................................................................................A2
SPECIFICATIONS
....................................................................................................................................................................A3
OVERVIEW
..............................................................................................................................................................................A4
Introduction to System ..........................................................................................................................................................A4
SpecicationsforProperOperation .....................................................................................................................................A4
SystemFundamentals ............................................................................................................................................................A4
SystemPower .........................................................................................................................................................................A4
FUNCTIONS AND CONTROL ..................................................................................................................................................A5
CoolingOperationMode ........................................................................................................................................................ A5
HeatingOperationMode .......................................................................................................................................................A6
AutoMode ............................................................................................................................................................................... A7
DryMode .................................................................................................................................................................................A7
DefrostOperation ..................................................................................................................................................................A8
ProtectionFunctions ..............................................................................................................................................................A8
SpecialFunctions ....................................................................................................................................................................A9
TABLE OF CONTENTS
1G09CB1BEA/ GS09WB1BEA
1G12CB1BEA / GS12WB1BEA
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INTRODUCTION
A2
ENGLISH
SAFETY & PRECAUTIONS
FOLLOW ALL WARNINGS, CAUTIONS, AND PRECAUTIONS BELOW, AND INDUSTRY BEST
SAFETY PRACTICES AND STANDARDS. FAILURE TO DO SO MAY RESULT IN EQUIPMENT
DAMAGE OR FAILURE, AND SERIOUS PERSONAL INJURY OR DEATH.
!
WARNINGS
Service should be performed by the dealer or another professional.
Improperservicemaycausewaterleakage,electricalshock,orre.
Use only the supplied or specied service parts.
Useofotherpartsmaycausetheunittocomelose,waterleakage,electricalshock,orre.
The heat pump must be installed on a solid base that can support the unit’s weight.
Aninadequatebaseorincompleteinstallationmaycauseinjuryintheeventtheunitfallsothebase.
Electrical work should be carried out in accordance with the manual and national/local electrical wiring codes and rules of practice.
Insucientcapacityorincompleteelectricalworkmaycauseelectricalshockorre.
A dedicated power circuit must be used. The power supply should NEVER be shared by another appliance.
Wiring cable must be long enough to cover the entire distance with no splices.
Donotuseanextensioncord.Donotputotherloadsonthepowersupply,useadedicatedpowercircuit.
Failuretodosomaycauseabnormalheat,electricshockorre.
Only the specied wire types may be used for electrical connections between the indoor and outdoor units.
Firmlyclamptheinterconnectingwiressotheyreceivenoexternalstresses.Incompleteconnectionsorclampingmaycauseterminal
overheatingorre.
Wiring must not put undue stress or tension on the electrical covers or panels.
Installcoversoverthewires.Incompletecoverinstallationmaycauseterminaloverheating,electricalshock,orre.
If any refrigerant has leaked out during service work, ventilate the room.
Therefrigerantproducesatoxicgasifexposedtoame.
After all service is complete, check for and repair any system refrigerant leaks.
Therefrigerantproducesatoxicgasifexposedtoames.
When servicing or relocating the system, keep the refrigerant circuit free from substances other than the specied refrigerant
(R454B), such as air or moisture
Thepresenceofairorotherforeignsubstanceintherefrigerantcircuitcausesanabnormalpressureriseorrupture,resultingininjury.
During pump-down, stop the compressor before removing the refrigerant piping.
Ifthecompressorisstillrunning,andthestopvalveisopenduringpump-down,airwillbesuckedintothesystemwhilethecompressor
isrunning.Thiswillcauseabnormalpressureandnoncondensablesaddedtothesystem.
Unit must NOT be grounded to a utility pipe, arrester, or telephone line ground.
Ancompletegroundmaycauseelectricalshock,orre.Ahighsurgecurrentfromlightningorothersourcesmaycausedamagetothe
heatpump.
CAUTIONS
The heat pump must not be installed in a place where there is danger of exposure to ammable gas.
Ifthegasbuildsuparoundtheunit,itmaycatchre.
Drain piping must comply with installation guidelines.
Inadequatepipingmaycauseooding.
Tighten are nuts according to the specied torque using a torque wrench.
Ifarenutsareovertightened,theymayeventuallycrackandcauserefrigerantleakage.
Ensure proper clearances around unit per installation guidelines.
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INTRODUCTION
A3
ENGLISH
SPECIFICATIONS
Ourcontinuedcommitmenttoqualityproductsmaymeanachangeinspecicationswithoutnotice.
VisitGEAppliancesAirandWater.comtoaccesscurrentspecicationtablesonline.
NOTE
Outdoor Unit 1G09CB1BEA 1G12CB1BEA
Indoor Unit GS09WB1BEA GS12WB1BEA
Cooling
RatedCapacityBtu/hr 9,000 11,500
CapacityRangeBtu/hr 3,400-10,000 3,400-12,000
SEER2 20 20
EER2 12 12
MoistureRemovalPt./hr 2.7 2.8
Heating
RatedHeatingCapacity47°FBtu/hr 10,000 13,000
HeatingCapacityRangeBtu/hr 3,400-11,000 3,400-13,500
HSPF2(IV) 9.5 9.5
RatedHeatingCapacity5°FBtu/hr 7,000 9,000
HeatingCapacityat5°F/Capacityat47°F 70% 69%
COP5°F 1.8 1.8
Operating
Range
Cooling(WithoutWindBaeorTopCover) 23~115°F(-5~46°C) 23~115°F(-5~46°C)
Heating -4~75°F(-20~24°C) -4~75°F(-20~24°C)
Power Supply
Voltage,Cycle,Phase(V/Hz/-) 115/60/1 115/60/1
MaximumFuseSizeA 25 25
MinimumCircuitAmpA 18 18
Outdoor Unit
Compressor Type
DCInverterRotary DCInverterRotary
OutdoorNoiseLeveldB 54 55
Dimension:Heightin(mm) 213/4(553) 213/4(553)
Dimension:Widthin(mm) 34(863) 34(863)
Dimension:Depthin(mm) 11(280) 11(280)
Weight(Net/Ship)-lbs(kg) 65.31/78.11(29.6/35.4) 70.17/82.96(31.8/37.6)
BasepanHeater Yes Yes
Indoor Unit
FanSpeedStages 5 + Auto 5 + Auto
AirowCFM:Cooling
(Turbo/High/Med/Low/Quiet)
360/290/260/230/210 360/300/272/240/210
AirowCFM:Heating
(Turbo/High/Med/Low/Quiet)
350/290/250/220/200 350/290/260/230/200
IndoorSoundLeveldB:Cooling
(Turbo/High/Med/Low/Quiet)
46/43/40/39/32 46/44/43/39/32
IndoorSoundLeveldB:Heating
(Turbo/High/Med/Low/Quiet)
44/41/38/37/34 45/43/41/39/33
AutoUp-DownLouver Yes Yes
AutoLeft-RightLouver No No
DrainPipeSizeO.Din 5/8 5/8
Dimension:Heightin(mm) 117/8(301) 117/8(301)
Dimension:Widthin(mm) 333/4(856) 333/4(856)
Dimension:Depthin(mm) 73/4(196) 73/4(196)
Weight(Net/Ship)-lbs(kg) 21.84/26.92(9.9/12.2) 21.84/26.92(9.9/12.2)
Factory-InstalledRefrigerantDetection
Sensor(RDS)
No No
RefrigerantDetectionSensor(RDS)Compatible Yes(UALS01A,soldseparately) Yes(UALS01A,soldseparately)
WiFi*
Built-in Built-in
Refrigerant
Lines
Refrigerant R454B R454B
Connections Flare Flare
LiquidO.D.in 1/4 1/4
SuctionO.D.in 3/8 3/8
FactoryChargeOz 30.3 36.5
MaximumLineLengthFt/m 66/20 66/20
MaximumHeightFt/m 33/10 33/10
*WiFi includes SmartHQ
TM
Home and SmartHQ
TM
Service compatibility.
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INTRODUCTION
A4
ENGLISH
OVERVIEW
Introduction to System
SingleZoneDuctlessSplitSystemHeatPumpsfeatureawallmountedindoorfan/evaporatorunitthatreceivesrefrigerantfromaninverter
drivenvariablespeedoutdoorcondensingunit.Thesystemoperationiscontrolledwitharemotecontrol.
Theoutdoorunitfeaturesavariablespeedrotarycompressor,EEVmeteringdeviceandDCfanmotor.ThesesystemsuseR454Brefrigerant
andPVEoil.Theoutdoorunitsare115voltratedsystems.
Theindoorunitsarewallmounted.TheyfeatureaDCblowermotorandaDClouvermotor.Theunithasaroomtemperaturesensorandan
evaporatortubetemperaturesensor.Thewallunitispoweredbyvoltagefromtheoutdoorunit.
Specications for Proper Operation
Thesystemsaredesignedtooperateintemperaturerangesof23~115°Fincoolingmodeand-4~75°Finheatmode.
PVEoilisnon-reactivetowaterandwillnotgointohydrolysis.Thereisnoneedtoaddarefrigerationdrierwhenservicingorinstallingthis
system.
Theindoorwallmountedunitreceivesoperatingvoltageandcommunicationdatasignalson#14AWGwirethatconnectsbetweentheindoor
andoutdoorunits.Thereshouldnotbeanysplicesintheeldwiringthatgoesbetweenterminals1,2,3GND.Aspliceinthesewiresmaycause
thesystemtolosecommunicationbetweentheindoorandoutdoorunits.
Theeld-suppliedrefrigeranttubingconnectsusingaretypettingsatboththeindoorandoutdoorunits.Tubingmustbesizedperthe
specications.Bothlinesmustbeinsulated.Theonlymethodofcheckingchargeoradjustingchargeisbyweightmethodexplainedinthis
manual(noexceptions).
Thecondensatesystemisagravitytype.Aeldinstalledcondensatepumpmaybeaddedtothesystem.Alwaysfollowthemanufacturer’s
installationinstructionswheninstallingacondensatepump.
Properclearancesatbothindoorandoutdoorunitsmustbemaintained.Improperclearancescauseincorrectrefrigerantpressuresandcoil
freezing.
System Fundamentals
Theindoorunitwillsenseroomtemperatureatthepointwherethewallunitisinstalled.Theindoorfanwillruncontinuouslywhenplacedin
heatingorcoolingmodeandwillnotcycleonandowiththeoutdoorunit.Ifitdid,roomtemperaturecouldnotbesensedormaintained.
Theinvertercompressorsystemintheoutdoorunitwillvarytherefrigerantowandindoorairvolumelevelstomatchthecomfortrequirement
insidetheconditionedspace.Ifanabnormalconditionisdetectedbythesystem’ssensors,thesystemhastheabilitytotakereactivemeasures.
Theamountofrefrigerantowandassociatedcapacitygeneratedbythesystemwillbedeterminedbyhowfastthesystem’svariablespeed
rotarycompressorispumping.Thecompressoroperatingspeedisdeterminedbythedierencebetweentheconditionedspacetemperature
andthesetpoint.
Ifalargeamountofcapacityisneeded,thecompressorwilloperateatahighspeed.Astheneedforcapacityreducesandthetemperatureof
theroomnearssetpoint,thecompressorwillslowdown.Whensetpointhasbeenreached,thecompressorwillshutowhilethefancontinues
tooperate.Whenadierenceintemperatureissensedbetweenthesetpointandroom,thecompressorwillrestartatanewcalculatedspeed.
Ifasystemsensordeterminesthereisaneedtoadjustthefrequencysignaltopreventasystemmalfunction,thecompressorfrequencymay
beoverriddenandanewfrequencyestablished.Itshouldbenotedthatthefrequencysignallevelthatissenttothecompressorcannotbe
determinedbyaservicingtechnician.
Inthismanual,systemcomponents,operation,sensorfunctions,anddiagnosticprocedureswillbeexplainedingreaterdetail.
System Power
The115VoltACpowerforthesystemconnectstoterminals1,2,andgroundoftheoutdoorunitterminalblock.Thisterminalblockalsohas
terminalstoconnectpowertotheindoorunit.
Thevoltagereadingbetweenterminals1and2shouldbe115VAC.
Oneadditionalconnectionontheterminalblock(3)isforthecommunicationwirebetweentheindoorandoutdoorunits.
NOTE: Miswiring of these connections may cause improper operation or damage to system components.
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INTRODUCTION
A5
ENGLISH
FUNCTIONS AND CONTROL
Cooling Operation Mode
Overview
Thetemperaturecontrolrangeincoolingmodeis23°Fto115°F.The
temperaturesetbytheremotecontrolandtheindoorunitambient
temperaturesensorwilldetermineifacallforcoolingisneeded.
Ifacallforoperationiscommunicatedfromtheindoorunittothe
outdoorunit.Theindoorunitlouverwillopenusingasteppermotor,
andtheindoorfanwilloperateatthespeedlastset.Theoutdoor
unitwilldeterminethepositionoftheEEVandspeedfrequencyof
thecompressor.Therecanbeadelayofupto3minutesbeforethe
outdoorunitfanandcompressorstart.
Thespeedoftheindoorfancanbecontrolledmanuallybytheuser
orautomaticallybythesystem.Thespeedcanbechangedbetween
LOW,MEDIUM,andHIGH.
Thepredeterminedconditionsforcoolmodeautomaticfanspeed
controlarefollows:
Communication
Theindoorandoutdoorunitmainboardscommunicateviaadigital
signalonthewireconnectedtoterminal3ofeachunit.Aspliceor
breakinthiswirewillcauseacommunicationerror.Whenacommand
isreceivedfromtheremotecontrol,theindoorunitmainboard
communicateswiththeoutdoorunitmainboardtoperformthe
requestedfunction.
Outdoor Unit
Uponarequestforcooling,theoutdoorunitmainboardapplies
powertotheoutdoorfanmotorandcompressor.Dependingon
systemcycling,theremaybeuptoa3minutewaitperiodbeforethe
compressorandoutdoorfanstart.
Temperature Sensors
Fourtemperaturesensorslocatedintheoutdoorunitprovide
temperatureinformationtotheoutdoorunitmainboardforcontrol
ofthesystemduringcoolmode.
Theoutdoorambienttemperaturesensorprovidesthetemperature
oftheairdrawnintothecondensercoil.
Thedefrosttemperaturesensorprovidesthetemperaturesensedat
theoutputofthecondensercoil.
Thesuctionlinetemperaturesensorprovidesthetemperature
sensedattheincomingsuctionlinepipe.
Thecompressordischargesensorprovidesthetemperaturesensed
atthedischargepipeofthecompressor.
Call to Terminate Cooling
Thesystemwillterminatecoolingwhentheindoorambient
temperaturesensorisequaltoorlowerthan2°Foftheroomset
temperature.Theindoorcontrolboardwillcommunicatetothe
outdoorcontrolboardtode-energizethecompressor.
Theoutdoorfanwillrunfor60secondsbeforestopping.Theindoor
fanmotorandlouverwillcontinueoperatingaftercoolinghasbeen
terminated.
Tostopcoolmode,pressthepowerbuttontoturnthesystemo,or
changetoanothermode.
Freeze Protection Function
Whenthecompressoroperatescontinuouslyfor10secondsandthe
temperatureoftheindoorcoilhasbeenbelow35.6°Ffor10seconds,
thecompressorwillstop.Theindoorunitfanwillcontinuetooperate.
Whenthetemperatureoftheindoorcoilrisesto50°Fformorethan
3minutesthecompressorwillrestartandthesystemwillcontinue
functioning.
Therewillbea3minutedelaywhenswitchingfromhighspeedfanto
lowspeedfan.Therewillbenodelaywhenswitchingfromlowspeed
fantohighspeedfan.
Theoutdoorunittemperaturesensors:outdoorambient,defrost,
suctionline,andcompressordischarge,usedinconjunctionwith
theindoortemperaturesensors,indoorambientandcoil,provide
informationtotheoutdoorcontrolboardtomonitorthesystemand
regulatethefrequencyofthecompressor,theEEV,andoutdoorfan
speed,toachievethedesiredroomtemperature.
Whenthecallforcoolinghasbeensatised,thecompressorwillturn
o,followedbytheoutdoorfan.Theindoorunitfanwillcontinueto
run.Ifthesystemdetectsamalfunction,itmayshutdownorshowan
error code.
ThiscodewillbeshownontheindoordisplayboardoraashingLED
willappearontheoutdoorPCB.
Indoor Unit
Toenterthecoolmode,pointtheinfraredremotecontrolatthe
indoorunitandpressthepowerbutton,thenpresstheCOOLmode
buttonifnotalreadysettocoolmode.Thesignalsreceivedbythe
infraredreceiverarerelayedtothemainboardoftheindoorunitto
turnthesystemonandsetittocoolmode.TheindoorunitPCBwill
illuminatethedisplay,indicatingthesettemperatureandcurrent
statusoftheunit.ThePCBwillsignalthesteppermotortoopenthe
louvertoeitherastationaryposition,oroneofseveraloscillating
modes.
Asthelouveropens,theindoorunitmainboardwillpowerupthe
indoorfanmotor,operatingthefanatthespeedlastset.Theindoor
fanmotorhasafeedbackcircuitwhichprovidestheindoorunitmain
boardwithinformationforcontrollingthespeedofthefanmotor.
Temperature Sensors
Theindoorunithastwosensorsthatprovidetemperature
informationtothemainboard.Thesensors:anindoorambient
temperaturesensor,andpipetemperaturesensor,areusedfor
controllingthesystemduringcoolmode.Theresistancevalues
ofthesensorswillvarywithtemperature.Theresistanceto
temperaturevaluescanbefoundtothesensorbeingchecked.
FanSpeed AmbientIndoorAirTemperature
Low 1.8°Fandlowerbelowsetpoint
Medium Between1.7°Fbelowsetpointand5.3°Fabovesetpoint
High 5.4°Fandhigherabovesetpoint
background
INTRODUCTION
A6
ENGLISH
FUNCTIONS AND CONTROL
Heating Operation Mode
Overview
Thetemperaturecontrolrangeinheatingmodeis-4°Fto75°F.The
temperaturesetbytheremotecontrolandtheindoorunitambient
temperaturesensorwilldetermineifacallforheatisneeded.Ifa
callforheatisjustied,atemperaturecompensationadjustment
isautomaticallyaddedtotheoperatingparameterandthecallis
communicatedfromtheindoorunittotheoutdoorunit.
Theindoorunitlouverwillopenusingasteppermotor.Theindoorfan
willnotoperateatthistime.
Theoutdoorunitwillshiftthe4-wayvalvetotheheatmodeposition
anddeterminethepositionoftheEEVandspeed(frequency)of
thecompressor.Therecanbeadelayofupto3minutesbeforethe
outdoorunitfanandcompressorstart.
Thepredeterminedconditionsforautomaticcontrolarefollows:
Note: The heating mode has a temperature compensation of 4 °C,
resulting in the actual ambient temperature being subtracted from the
calculation by approximately 7 °F.
Astheindoorambienttemperaturefalls,thechangeoffanspeed
followsthefollowingtemperatureconditions:
tothesetoperation.
5. Whenthecoiltemperaturedrops,thefanspeedisjudged
accordingtothehotcrosstemperature:
• Coiltemperatureishigherthan35°C,fanspeedaccordingto
thesetoperation.
• Coiltemperaturebetween37°Cand35°Cfanspeedismid
• Coiltemperaturebetween35°Cand25°Cfanspeedislow
• Coiltemperaturebetween25°Cand23°Cfanspeedisweak
• Thefanstopswhenthecoiltemperatureislowerthan23°C
Residualheatsending:theindoorfanwilloperateonlowspeeduntil
thecoiltemperaturereaches73°Forstopafter50seconds.
Theoutdoorunittemperaturesensors:outdoorambient,defrost,
suctionline,andcompressordischarge,usedinconjunctionwiththe
indoorcoilandroomtemperaturesensors,provideinformationto
theoutdoorcontrolboardtomonitorthesystemandregulatethe
speedofthecompressor,theEEVandoutdoorfanspeedtoachieve
thedesiredroomtemperature.
Whenheatinghasbeensatised,thecompressorwillturnorst,
followedbytheoutdoorfan.The4-wayvalvewillde-energize2
minutesaftercompressorstops.
Tosaveenergy,Theindoorunitfanwillcontinuetorunatminimum
speeduntilindoorcoiltemperaturereachesaminimumtemperature,
whenitwillturno.
Ifthesystemdetectsamalfunction,itmayshutdownorshowan
errorcodeontheindoorunitdisplayboardand/orIoutdoorunitmain
boardLED.
Defrost
Whenthesysteminitiatesacallfordefrost,theindoorfanmotor
stops.Theindoorunitdisplaywillnotchange.Anyindoorunit
malfunctionswillbeignoredatthistime.Thesystemwillcycle
throughthedefrostoperation.Anyindoorunitmalfunctionswillbe
ignoreduntilthecompressorrestartsandhasbeenoperatingfor30
seconds.Attheconclusionofthedefrostcycle,theindoorfanwill
enterthecoldairproofoperation.Heatmoderesumes.
Automatic Heating Temperature Compensation
Whenthesystemisinheatingmode,atemperaturecompensation
adjustmentisaddedtothesensedtemperature.Thisisintendedto
adaptfortemperaturestraticationintheconditionedenvironment
relativetotheinstallationlocationoftheindoorhead.
Indoor Unit
Toentertheheatmode,pointtheinfraredremotecontrolleratthe
indoorunitandpressthepowerbutton,thenpresstheHEATmode
buttonifnotalreadysettoheatmode.
Thesignalsreceivedbytheinfraredreceiverarerelayedtothemain
boardoftheindoorunittoturnthesystemonandsetittoheat
mode.
TheindoorunitPCBwillactivatethedisplayoftheindoorunit,
illuminatingthedisplayandindicatingthesettemperatureand
currentstatusoftheunit.
TheindoorunitPCBwillsignalthesteppermotortoopenthelouver
toastationaryposition.
ThePCBwillpoweruptheindoorfanmotoraftertheoutdoorunit
hasstartedandheatingoftheindoorcoilhastakenplace(seecoldair
proofoperation).Themotorhasafeed-backcircuitwhichprovides
informationforcontrollingthespeedofthefanmotor.
Therewillbea3minutesdelaywhenswitchingfromhighspeedfanto
lowspeedfan.Therewillbenodelaywhenswitchingfromlowspeed
fantohighspeedfan.
Cold Air Proof Operation
Atinitialstartofheatmode,indoorblowerwillnotbeturnedon
immediatelyuntilindoorcoiltemperaturesensesaminimum
temperature.Thispreventscoldairfrombeingblownuntilthecoilis
heated.
FanSpeed AmbientIndoorAirTemperature
Stop 8.8°Fandhigherabovesetpoint
Low Between5.9°Fand8.7°Fabovesetpoint
Medium Between3.6°Fand5.8°Fabovesetpoint
High Belowsetpointandupto3.5°Fabovesetpoint
Theindoorfaniscontrolledbasedonthecoiltemperature,asshown
inthegureabove.
Whenthecoiltemperaturerises,thefanspeedisjudgedaccordingto
thecoiltemperature:
1. Attheendofheatingordefrostingaftertherstpoweron,the
fanstopswhenthecoiltemperatureislowerthan25°C/77°F;
2. Coiltemperaturebetween25°C/77°Fand35°C/96°Ffanspeed
isweak;
3. Coiltemperaturebetween35°C/96°Fand37°C/100°Ffanspeed
isweak;
4. Coiltemperatureishigherthan37°C/100°F,fanspeedaccording
background
INTRODUCTION
A7
ENGLISH
FUNCTIONS AND CONTROL
Temperature Sensors
Theindoorunithastwosensorsthatprovidetemperature
informationtotheindoorunitmainboard.Thesensors:aroom
temperaturesensor,andpipetemperaturesensor,areusedfor
controllingthesystemduringheatmode.
Theresistancevaluesofthesensorswillvarywithtemperature.The
resistancetotemperaturevaluescanbefoundusingatemperature/
resistancechartspecictothesensorbeingchecked.
Communication
Theindoorandoutdoorunitmainboardscommunicateviaadigital
signalonthewireconnectedtoterminal3ofeachunit.Aspliceor
breakinthiswirewillcauseacommunicationerror.
Whenacommandisreceivedfromtheremotecontrol,theindoor
unitmainboardcommunicateswiththeoutdoorunittoperformthe
requestedfunction.
Outdoor Unit
Uponarequestforheat,theoutdoorunitPCBappliespowertothe
4-wayvalve,outdoorfanmotor,andcompressor.Dependingon
systemcycling,theremaybeuptoa3minutewaitperiodbeforethe
compressorandoutdoorfanstart.
Iftheroomtemperatureisabovethesettemperature,yetlowerthan
2°Fabovethesettemperature,thesystemwilladjusttherunning
frequencyofthecompressorautomatically.
TheoutdoorunitmainboardalsocontrolsthepositionoftheEEV
(ElectronicExpansionValve)toregulatetheowofrefrigeranttothe
outdoorunitevaporatorcoil.
Temperature Sensors
Fourtemperaturesensorslocatedintheoutdoorunitprovide
temperatureinformationtothePCBforcontrolofthesystemduring
heatmode.
Theambienttemperaturesensorprovidesthetemperatureoftheair
drawnintothecondensercoil.
Thedefrosttemperaturesensorprovidesthetemperaturesensedat
theoutputofthecondensercoil.
Thesuctionlinetemperaturesensorprovidesthetemperature
sensedattheincomingsuctionlinepipe.
Thecompressordischargesensorprovidesthetemperaturesensed
atthedischargepipeofthecompressor.
Call to Terminate Heating
Thesystemwillcalltoterminateheatingwhentheindoor
temperatureisequaltoorhigherthan2°Fabovetheroomset
temperature.Theindoorcontrolboardwillcommunicatetothe
outdoorcontrolboardtode-energizethecompressor.Theoutdoor
fanwillrunfor60secondsbeforestopping.The4-wayvalvewillde-
energize2minutesafterthecompressorstops.
Tostopheatmode,pressthepowerbuttontoturnthesystemo,or
changetoanothermode.
Auto Mode
Withthesystemturnedon,presstheAUTObuttonontheremote
control.Thesystemwillchangetotheautomodeofoperation.
Astheroomiscooledorheated,thesystemwillautomaticallyswitch
betweencoolmode,fanmode,andheatmode.Thereisaminimum
15minuteoperatingtimebetweenmodechanges.
Dry Mode
Overview
Thetemperaturecontrolrangeis60°F-86°F.Thismodeisusedfor
dehumidication.
Tr=roomtemperatureTs=settemperature
WhenTr>Ts+4°F,thecompressorwillturnonandtheindoorfanwill
operateatthesetspeed.
WhenTs≤Tr≤Ts+4°F,thecompressorwilloperateatthehighdry
frequencyfor10minutes,thenatthelowdrymodefor6minutes.
Theindoorfanwilloperateatlowspeed.
WhenTr<Ts,theoutdoorunitwillstop,andtheindoorfanwillstopfor
3minutes,thenoperateatthelowspeedoption.
Automaticfanspeed:
• WhenTr>Ts+9°F,Highspeed
• WhenTs+5.4°F≤Tr<Ts+9°F,Mediumspeed
• WhenTs+3.6°F≤Tr<Ts+5.4°F,Lowspeed
• WhenTr<Ts+3.6°F,Lightspeed
Note: TURBO and QUIET mode must be set using the remote controller.
Iftheoutdoorfanisstopped,theindoorfanwillpausefor3minutes.
Iftheoutdoorfanisstoppedformorethan3minutes,andthe
compressorisstilloperating,thesystemwillchangetolightspeed
mode.
Indoor Unit
Toenterthedrymode,pointtheinfraredremotecontrolatthe
indoorunitandpressthepowerbutton,thenpresstheDRYmode
buttonifnotalreadysettodrymode.
Thesignalsreceivedbytheinfraredreceiverarerelayedtothemain
boardoftheindoorunittoturnthesystemonandsetittodrymode.
Theindoorunitmainboardwillilluminatethedisplay,indicatingthe
settemperatureandcurrentstatusoftheunit.
ThePCBwillthensignalthelouversteppermotortoopenthelouver
toeitherastationaryposition,oroneofseveraloscillatingmodes.
Asthelouveropens,theindoorfanmotorwilloperateatthespeed
lastset.Thefanmotorhasafeedbackcircuitwhichprovidesthe
mainboardwithinformationforcontrollingthespeedofthefan
motor.
NOTE: It is recommended that Dry mode is not used for longer than a
4-hour period to minimize overflowing the condensate drain pipe.
Temperature Sensors
Theindoorunithastwosensorsthatprovidetemperature
informationtothePCB.Anambienttemperaturesensorandpipe
temperaturesensorareusedforcontrollingthesystemduring
drymode.Theresistancevaluesofthesensorswillvarywith
temperature.Theresistancetotemperaturevaluescanbefound
usingatemperature/resistancechartspecictothesensorbeing
checked.
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Protection Functions
Thesefunctionslimittheoperationofthesystemwhen
encounteringthenormaloperatinglimitsoftheequipment.
Compressor High Temperature
Thecompressordischargepipesensor(exhausttemp)sensesthe
temperatureoftherefrigerantexitingthecompressorThesensed
temperaturereceivedfromthesensorbythecontrolcircuitrywill
causethecompressorfrequencytoincreaseordecrease(seechart
below)Ifatemperatureof>=230°Fissensedfor2seconds,an
exhaustoverheatingprotectionerrorcodewillbeindicatedatthe
outdoor unit.
FUNCTIONS AND CONTROL
TTC
230°F
Abnormalstop
Decreasingfrequencyrapidly(1HZ/1second)
Decreasingfrequencyslowly(1HZ/10seconds)
Thefrequencydoesn’tchange
Increasingfrequencyslowly(1HZ/10seconds)
Normal
208.4°F
215.6°F
203°F
197.6°F
Overheating Protection for Indoor Unit
Asensormonitorscoiltemperatureinbothheatingandcooling
modes,andcausesthecompressortospeedup,slowdown,orstop
Compressor Over-Current Protection
Ifthecurrentdrawofthecompressoratstartupisgreaterthanthe
valueslistedonthechartbelowforapproximately5seconds,the
compressorwillstop.After3minutesthecompressorwillrestart.If
theover-currentconditionoccurs3timesin20minutes,thesystem
willlock-out,andacodewillbeindicatedattheoutdoorunit.Itwill
benecessarytoremovepowertothesystemtoresetthelock-out
condition.
Model
Cooling
Increase
Point
Cooling
Decrease
Point
Heating
Increase
Point
Heating
Decrease
Point StopPoint
09K 5.5A 6.5A 7A 8A 10.5A
12K 5.5A 6.5A 7A 8A 10.5A
Model Cooling Heating
09K
15-71Hz 20-102Hz
12K 15-81Hz 20-102Hz
Communication
Theindoorandoutdoorunitmainboardscommunicateviaadigital
signalonthewireconnectedtoterminal3ofeachunit.Aspliceor
breakinthiswirewillcauseacommunicationerror.
Whenacommandisreceivedfromtheremotecontrol,theindoor
unitmainboardcommunicateswiththeoutdoorunitmainboardvia
theterminal3wiretoperformtherequestedfunction.
Outdoor Unit
Uponarequestfordrymode,theoutdoorunitmainboardapplies
powertothefanmotorandcompressor.Dependingonsystem
cycling,theremaybeuptoa3minutewaitperiodbeforethe
compressorandoutdoorfanstart.
WARNING:Donotmeasurecompressorvoltages,damagetothe
metermayresult.
TheoutdoorunitPCBalsocontrolsthepositionoftheEEV
(ElectronicExpansionValve}toregulatetheowofrefrigeranttothe
indoorunitevaporatorcoil.
Temperature Sensors
Fourtemperaturesensorslocatedintheoutdoorunitprovide
informationtotheoutdoorunitPCBforcontrolofthesystemduring
dry mode.
Theoutdoorambienttemperaturesensorprovidesthetemperature
oftheairdrawnintothecondensercoil.
Thedefrosttemperaturesensorprovidesthetemperaturesensedat
theoutputofthecondensercoil.
Thesuctionlinetemperaturesensorprovidesthetemperature
sensedattheincomingsuctionlinepipe.
Thecompressordischargesensorprovidesthetemperaturesensed
atthedischargepipeofthecompressor.
Tostopdrymode,pressthepowerbuttontoturnthesystemo,or
changetoanothermode.
Defrost Operation
Toenterthedefrostmode,thecompressormusthaveaccumulated
10minutesofruntime,and45minutesofaccumulatedruntime
sincethelastdefrostcycle.
Whenthedefrostcyclebegins,thefollowingconditionstakeplace:
1. Indoorfanmotorstops.
2. Compressorstopsfor40seconds.
3. After40seconds,the4-wayvalveshiftstocoolingpositionand
outdoorfanstops.Compressorstartagain.
4. About1minute,thecompressoracceleratestothedefrost
frequency.
5. Theoutdoorunitwillnowdefrost.Defrostcycleruns
continuouslyforapproximately10minutes,unlessthe
condensermaintainsatemperatureabove48°Ffor60seconds,
orthecondensermaintainsatemperatureabove59°Ffor5
seconds.
Uponexitingthedefrostcycle,thefollowingconditionswilltake
place:
1. Thecompressorwillstop.
2. Theoutdoorfanwilloperateathighspeed.
3. 25secondslaterthe4-wayvalvewillshifttotheheatingmode.
4. 30secondslaterthecompressorwillstart,andthesystem
resumesnormaloperation.
Compressorfrequencies:
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FUNCTIONS AND CONTROL
OutdoorTemperature PanHeater
>37°F(3°C) OFF
28°F(-2°C)to34°F(1°C) OFF20min,ON10min
10°F(-12°C)to25°F(-4°C) OFF15min,ON15min
<10°F(-12°C) ON
Indoor Coil Anti-Freeze Protection
Thetemperaturesensedbythecoilsensorisusedtodetermineat
whatspeedthecompressoristoruntoavoidthecoiltemperature
beingtoocold.
TCI_Indoor:Indoorunitpipesensortemperature
tS:OutdoorunitSuctionLinesensortemperature
• WhenMin(TCI_indoor,(TCI_indoor+tS)/2)<TCI1,thefrequency
ofthecompressordecreasesattherateof1HZ/1second.
• WhenMin(TCI_indoor,(TCI_indoor+tS)/2)<TCI2,thefrequency
ofthecompressordecreasesattherateof1HZ/10second.
• WhenTCI_indoorbeginstoriseagain,andTCI2≤Min(TCI_indoor,
(TCI_indoor+tS)/2)≤TCI3,thefrequencyofthecompressor
doesnotchange.
• WhenTCI3<Min(TCI_indoor,(TCI_indoor+tS)/2)<TCI4,the
frequencyofthecompressorincreasesattherateof1HZ/10
second.
Example:ifMin(TCI_indoor,TCI_indoor+tS)/2)≤32°Fsustains
for2minutes,theoutdoorunitwillstopandindicateanunderload
malfunctioncodeattheoutdoorunit.Thecompressorstopsfora
minimumof3minutes.WhenMin(TCI_indoor,TCI_indoor+tS)/2)>
TCI4,thecompressorwillrestart.
Base Pan Heater
Tokeepcondensatewaterfromfreezinginsidethecabinet,abase
panheaterisinstalledatthefactory.
Operationcondition:
A.Itwillstartwhiledefrostingprocessisrunning.
B.IfACisnotindefrostprocess,itwillworkrefertothechart
belowfortheoperatingparameters.
52°F
46°F
Decreasingslowly
Decreasingrapidly
Stop
Keepingfrequency
Increasesslowly
Tpg4=48°F
Tpg3=45°F
Tpg2=41°F
3Tpg1=7°F
32°F
Special Functions
Auto Restart
Whenthisisenabled,thefollowingfunctionswillautomatically
resumesafterapowerloss:
• ON/OFFState,ModeofOperation,FanSpeed,Temperature
Setpoint,LouverSwingsettings.
• Iftherewasatimerset,itwillbecanceleduponrestart.
Forced Defrost
ForcedefrostviaRemoteController
Settingmethod:
1. SettoHEATMode
2. Setto30°C/86°F
3. SetHighFanSpeed
4. PressTemperature+Button10timeswithin7seconds
5. UnitwillBeep7timestoConrm.
Cancelmethod:
SameprocessasSettingMethod.HearUnitBeep5timestoconrm
ofcancelfunction.
Indoor Temperature Display
Thisfunctionwillallowyoutosetthedisplaytoshoweitherthe
Ambienttemperatureorthesetpoint:
Settemperature:
• PresstheLightbutton10timeswithin5second.UnitwillBeep4
timestoconrm.
Ambienttemperature:
• PresstheLightbutton10timeswithin5second.UnitwillBeep2
timestoconrm.
Crankcase (Compressor) Heater
Operationlogic:
A.Ifoutdoorambienttemperatureis5°C,compressorheateris
OFF.
B.Ifoutdoorambienttemperatureis<3°C,compressorheater
functionsasshown:
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FUNCTIONS AND CONTROL
Temperature Compensation
SetTemperature:
1. Applypowertotheunit.
2. SettoCoolingModeorHeatingMode
3. Setthetemperatureto24°C.
4. PresstheSLEEPbutton7timeswithin5seconds.IndoorPCBwillbeep2timestoconrm.
5. 24°Cwillbethestarting/referencepointfortheTemperatureCompensation.
6. Press or onthecontrollertoadjustcompensationtemperaturevalue.TemperatureCompensationcanbeadjustedfrom-8°Cto
+6°C.(Example:ifyouwanttosettheTemperatureCompensationvalueby4°C,thensetthetemperatureto28°C.)
7. Oncethedesiredvaluehasbeenselected,turnOFFtheunittosavethecompensationsettings.
Timed Defrost
Logic:
1. Afterreceivingthedefrostsignal,thecompressorwillstop.
2. 40secondslater,thefour-wayvalveisreversedandtheoutdoorfanstops.
3. Thecompressorgraduallyincreasesfrequencytothehighestdefrostingfrequency.
4. Afterdefrostingcompletes,theoutdoorfanmotorstarts,thecompressorstop,andthefour-wayvalveisopenedafter25seconds
5. Thecompressorwillstartafter5seconds.
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ENGLISH
OUTDOOR UNITS
B1
OUTDOOR UNITS
COMPONENTS .......................................................................................................................................................................B2
OutdoorComponentIdentication ......................................................................................................................................B2
TerminalBlock ......................................................................................................................................................................... B3
PowerFactorReactor .............................................................................................................................................................B3
Compressor ............................................................................................................................................................................B3
FanMotor ................................................................................................................................................................................B3
TemperatureSensors ............................................................................................................................................................. B4
4-WayValve .............................................................................................................................................................................B4
ElectronicExpansionValve ....................................................................................................................................................B4
Accumulator ............................................................................................................................................................................B5
RefrigerantStrainers ..............................................................................................................................................................B5
CompressorHeater ................................................................................................................................................................B5
BasePanHeater ......................................................................................................................................................................B5
OutdoorUnitControlBoard ..................................................................................................................................................B6
WIRING DIAGRAM ................................................................................................................................................................... B9
DIP SWITCH SETTINGS
........................................................................................................................................................B10
SERVICE PROCEDURES
........................................................................................................................................................B11
CheckingtheOutdoorUnitSensors ...................................................................................................................................B11
CheckingtheReversingValveCoil ....................................................................................................................................... B11
CheckingtheCompressorWindings ................................................................................................................................... B11
CheckingtheEEVCoil ..........................................................................................................................................................B11
CheckingtheOutdoorDCFanmotor .................................................................................................................................B11
CheckingtheCompressorHeater .......................................................................................................................................B11
CheckingtheBasePanHeater ............................................................................................................................................. B12
CheckingtheReactor ...........................................................................................................................................................B12
TABLE OF CONTENTS
1G09CB1BEA
1G12CB1BEA
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ENGLISH
OUTDOOR UNITS
B2
COMPONENTS
TheoutdoorunithasaPCBthatintegratesthecontrolfunctionsandpowerfunctionsintoonePCB.Sensorsmonitorkeytemperatures
throughoutthesystemtomanageoperationaldecisions.
4-WayValve
Accumulator
Compressor
DefrostTemperatureSensor
DischargeTemperatureSensor
ElectronicExpansionValve
RefrigerantStrainers
AmbientTemperatureSensor
FanMotor
PowerFactorReactor
TerminalBlock
PowerControlBoard(PCB)
FanBlade
CompressorHeater
BasePanHeater
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Outdoor Component Identication
14
13
10
9
15
12
6
1
11
23
7
4
5
8
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OUTDOOR UNITS
B3
TheReactorisapowerlter.Itisunlikelytoeverhaveanelectrical
failureofthiscomponent.
TheReactorofalloutdoorunitsiselectricallyconnectedtotheIPM
onterminalconnectionsCN-5andCN-6.
Theoutdoorunitispoweredby115voltsinglephaseelectricity
connectedattheterminalblock.
Terminals1and2connectthisvoltagetothesystem.
Thenumber3terminaliscommunicationthatconnectswiring
betweentheindoorandoutdoorunits.Agroundterminalconnects
theoutdoorunittothelinevoltagepowersource.
Theindoorunitisalsopoweredbythesameelectricalsupplyas
theoutdoorunit.OnlyAWG14-4strandedcopperwireisallowed
connectedtotheTerminalBlockblockattheoutdoorunitandisrun
tothesameterminalsontheindoorterminalblock.
Wheninstallingtheeldsuppliedwiring,makecertainthewiregauge
iscorrect.Thereshouldnotbeanyelectricalwiringsplicesbetween
theindoorunitandoutdoorunitwireconnection3.Thiswireis
usedtocarrycommunicationdatabetweentheindoorandoutdoor
units.Awiringsplicewherewiresaretwistedinawirenutmaycause
deformationofthecommunicationsignal.Ifcommunicationislost
betweentheindoorandoutdoorunits,anERRORCODEE7willoccur.
ThefanmotorisavariablespeedDCmotor.Therequiredspeedis
calculatedbythePCB.ThemotoriselectricallyconnectedtothePCB
viaPLUGCN-10.
Incoolmode,themotorwillslowdownasoutdoorairtemperature
falls.
Inheatmode,themotorwillincreasespeedastheoutdoorair
temperaturefalls.
ThecompressorisathreephaseDCinverterdrivenrotarytype,
capableofvariablespeedoperation.Thecompressoroperating
frequencywillbedeterminedbythetemperaturedierencebetween
setpointandroomtemperature.
Thecompressorofalloutdoorunitsiselectricallyconnectedtothe
IPMonterminalconnectionsCN-7,CN-8andCN-9.
Protectionofthecompressorwillbeprovidedbythedischarge
temperaturesensor,thesuctionlinetemperaturesensor,andthe
overcurrentprotectionparameterinthePCB.
Terminal Block Compressor
Fan MotorPower Factor Reactor
COMPONENTS
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OUTDOOR UNITS
B4
COMPONENTS
Temperature Sensors
TheDischargeTemperatureSensorisanegativecoecient
thermistorthatsensesthetemperatureofthecompressorhot
gas.ThePCBmonitorsthetemperatureofthecompressorhotgas
andwillmakeinverterspeedchangesinresponsetoinputfromthis
device.
ThissensorconnectstotheMainControlBoardatPLUGCN-20.
These3sensorsarepartofanassemblyandwillallbechanged
together:
Defrost Temperature Sensor
Defrost Temperature Sensor
TheDefrostTemperatureSensorisanegativecoecientthermistor
thatwillchangeresistanceinresponsetooutdoorcoiltemperature
changes.ThePCBmonitorsthetemperatureoftheoutdoorcoilto
determinewhenthesystemshouldperformadefrostcycle.The
sensoralsomonitorscoiltemperatureduringdefrostcyclesto
determineterminationconditions.
ThissensorconnectstothePowerControlBoardatPLUGCN-15.
Outdoor Ambient Temperature Sensor
TheAmbientTemperatureSensorisanegativecoecient
thermistorthatwillchangeresistanceinresponsetooutdoorair
temperaturechanges.ThePCBmonitorsthetemperatureofthe
outdoorairtodeterminefanspeedrequirementsandinverter
speed.Thesensoralsoplaysaroleincalculationofrequireddefrost
conditions.
ThissensorconnectstothePowerControlBoardatPLUGCN-15
4-Way Valve
The4-WayValveredirectstheowofrefrigerantinthepipingcircuit
toallowthesystemtoreversethefunctionsoftheindoorand
outdoorcoils.Whende-energizedinCOOLMODE,thevalvewill
directtherefrigeranthotgastotheoutdoorcoil.Whenenergizedin
HEATMODE,thevalvewilldirectthehotgastotheindoorcoil.
Thevalveowdirectioncapabilityiscontrolledbyanelectrical
solenoid.Whenenergizedwith115VAC,thesolenoidwill
magneticallymoveaninternalslidewithinthe4-WayValvetochange
thedirectionofrefrigerantow.
The4-WayValveiselectricallyconnectedtothePowerControlBoard
atPLUGCN-11.
Electronic Expansion Valve
Themeteringdeviceisanelectronicexpansionvalve.Thevalve
consistsofanelectricaloperatorandavalvebodywithinternal
variablesizeorice.Whenoperating,thePCBwillsendpulsesof
voltagetotheelectricaloperator.Theoperatorwillthenmagnetically
movethepositionofthemeteringoricepintovaryrefrigerantow.
Themeteringdevicepositionisdeterminedbyinputfroma
DischargeTemperatureSensor.TheEEVwillchangetheinternal
oricesizetomaintainanacceptablelevelofsuperheat.
DuringCOOLMODEthevalvemeterslowpressurerefrigerantto
theindoorcoil.DuringHEATMODEthevalvemeterslowpressure
refrigeranttotheoutdoorcoil.
TheelectricalexpansionvalveiselectricallyconnectedtothePower
ControlBoardatPLUGCN-16.
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OUTDOOR UNITS
B5
COMPONENTS
Refrigerant Strainers
Thesystemhasdebris-catchingstrainersthatprotectinternal
systemcomponentsfromcontaminantsintherefrigerant.The
strainerisapermanentpartthatisnottypicallyreplaced.
Accumulator
TheAccumulatorislocatedinthesuctionlinecircuitatthe
entrancetothecompressor.Theaccumulatorhelpsprevent
liquidrefrigerantfromenteringthecompressorduringrun
operation.
Base Pan Heater
Tokeepcondensatewaterfromfreezinginsidethecabinet,abase
panheaterisinstalledatthebasepan.TheBasePanHeateris
electricallyconnectedtothePowerControlBoardatPLUGCN-12
andenergizedwith115VAC.
Compressor Heater
TheCompressorheaterisusedtopreheatthecompressorandassist
thestartofthecompressoratlowtemperature.TheCompressor
HeateriselectricallyconnectedtothePowerControlBoardatPLUG
CN-13andenergizedwith208/230VAC.
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OUTDOOR UNITS
B6
COMPONENTS
Outdoor Unit Control Board
2
CN3:ConnectorforGND
10
CN5,CN6:Connectorforthereactor
6
CN15:Connectionsfortemperaturesensors
4
CN10:Connectorforthefanmotor
12
CN19:ConnectorfortheRJ45
8
CN11:Connectorforfourwayvalvecoil
CN1:115VACpowerfromterminalblockconnectionsand2(L)
1
CN16:Connectorfortheelectronicexpansionvalve
7
CN4:Communicationconnectionbetweentheindoorboard
andtheoutdoorboard
3
CN13:Connectorforthecompressorheater
11
CN12:Connectorforthebasepanheater
9
CN7,CN8,CN9:CompressorU,V,Wconnections
5
CN24:ConnectorfortheOTA
13
CN14:Connectorforthecentralizedcontroller
14
CN2:115VACpowerfromterminalblockconnectionsand1(N)
15
3
2
7
14
13
10
9
12
11 8
1
2
3
4 56
15
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OUTDOOR UNITS
B7
3
2
COMPONENTS
2
CN3:ConnectorforGND
10
CNS,CN6:Connectorforthereactor
6
CN15:Connectionsfortemperaturesensors
4
CN10:Connectorforthefanmotor
12
CN19:ConnectorfortheRJ45
8
CN11:Connectorforfourwayvalvecoil
CN1:115VACpowerfromterminalblockconnectionsand2(L)
1
CN16:Connectorfortheelectronicexpansionvalve
7
CN4:Communicationconnectionbetweentheindoorboard
andtheoutdoorboard
3
CN13:Connectorforthecompressorheater
11
CN12:Connectorforthebasepanheater
9
CN7,CN8,CN9:CompressorU,V,Wconnections
5
CN24:ConnectorfortheOTA
13
CN14:Connectorforthecentralizedcontroller
14
CN2:115VACpowerfromterminalblockconnectionsand1(N)
15
14
13
109
15
12
6
1
11
2
3
7
4
5
8
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OUTDOOR UNITS
B8
COMPONENTS
1
3
9
2
8
5V
5V
5V
15 VDC
160-320 VDC
5V15 VDC 160-320 VDC12 VDC 160-320 VDC
115 VAC
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OUTDOOR UNITS
B9
WIRING DIAGRAM
1
2
3
5
6
7
9
3
9
2
31-5000931 Rev. 0
8
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OUTDOOR UNITS
B10
DIP SWITCH SETTINGS SERVICE PROCEDURES
SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Setting Description
OFF ---- ---- ---- ---- ---- ---- ----
ACLoopCommunications Default
ON ---- ---- ---- ---- ---- ---- ---- 24VCommunication
---- OFF ---- ---- ---- ---- ---- ---- CentralControllerProtocol Default
---- ON ---- ---- ---- ---- ---- ---- BMSProtocol
---- OFF OFF OFF OFF OFF OFF OFF CentralControllerAddress1 Default
---- OFF OFF OFF OFF OFF OFF ON CentralControllerAddress2
---- OFF ---- ---- ---- ---- ---- ---- --
---- OFF ON ON ON ON ON ON CentralControllerAddress64
---- ON OFF OFF OFF OFF OFF OFF BMSprotocolAddress1
---- ON OFF OFF OFF OFF OFF ON BMSprotocolAddress2
---- ON ---- ---- ---- OFF ---- ---- --
---- ON ON ON ON ON ON ON BMSControllerAddress64
SW2-1 SW2-2 SW2-3 SW2-4 Setting Description
OFF OFF OFF OFF
Caliber115V9K
OFF OFF OFF ON Caliber115V12K
OFF OFF ON OFF Reserved
OFF OFF ON ON Reserved
OFF ON OFF OFF Reserved
OFF ON OFF ON Reserved
OFF ON ON OFF Reserved
OFF ON ON ON Reserved
ON OFF OFF OFF Reserved
ON OFF OFF ON Reserved
ON OFF ON OFF Reserved
ON OFF ON ON Reserved
ON ON OFF OFF Reserved
ON ON OFF ON Reserved
ON ON ON OFF Reserved
ON ON ON ON Reserved
DIP SW1
DIP SW2
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OUTDOOR UNITS
B11
SERVICE PROCEDURES
NOTE: Component resistance readings shown in this section are for reference only. Actual resistance values may vary based on model being tested.
Testingofthefollowingcomponentsrequirestheuseofneedleprobes.Avoidtestingtheconnectorendoftheplug,asdamagetotheinternal
sectionsoftheplugcanoccur.
Checking the Outdoor Unit Sensors
NOTE: Use respective temperature / sensor chart for sensor type being
tested.
• Compressordischargesensor
• Suction sensor
• Defrosttemperaturesensor
• Ambientsensor
Step 1
Disconnectthesensorplugfromthecontrolboardforthistest.
Failuretodosomayprovideinaccuratereadings.
Step 2
Usingk-typetemperatureprobe,determinethetemperatureofthe
sensorbeingtested.
Step 3
Usinganohmmeter,checktheresistancevalueofthesensor.
Step 4
Referringtothetemperature/resistancetableforthesensorbeing
checked,verifytheresistancevaluecorrespondstothetemperature
checkedinStep2.Replacethesensorifthereadingisopen,shorted,
or outside
Step 5
Re-seattheplugontheconnectorattheconclusionofthetest.
Checking the EEV Coil
Step 1
DisconnecttheEEVcoilfromthePCBforthistest.Failuretodoso
mayprovideinaccuratereadings.
Step 2
Theresistancevaluesofpluspincombinationsare46Ohm.
Step 3
Re-seattheplugontheconnectorattheconclusionofthetest.
Checking the Compressor Heater
Useamultimetertomeasuretheresistanceatbothendsofthe
heatingwireharnessterminalofthecompressor.Theresistance
valueis601±7Ω.
Checking the Compressor Windings
Step 1
DisconnectwiringfromterminalsU,VandWoftheIPM.
Step 2
UsinganOhmmeter,checktheresistancevalueofthecompressor
windings.MeasurebetweenwiresUandV,UandW,andV,andW.
Theresistancevalueofthewindingsshouldbebalanced(equal
+/-20%).Iftheresistancevaluesarenotequal,verifythewiringand
connectionstothecompressoraswellasthecompressoritself.
Repairorreplaceasneeded.
Step 3
ReconnectthewiringtotheIPMattheconclusionofthetest.
Checking the Outdoor DC Fan motor
Step 1
Initiateforcedcooling.
Step 2
Iftheoutdoorunitfanmotordoesnotrun,ortheServiceMonitor
Boardindicatesanerrorcodeof09,checkthefollowingvoltagesat
connectorCN11ontheoutdoorunitPCB.SetthemetertoreadDC
voltswithaminimumvoltagerangeof360volts(voltagevaluesare
approximate):
DCvoltagebetweentheRedandBlack,betweentheWhiteandBlack,
andbetweentheRedandWhitewiresshouldread310~334VDC.
Thisisthemainvoltageforpoweringthefanmotor.
Checking the Reversing Valve Coil
Step 1
DisconnectthereversingvalveplugfromthePCBforthistest.Failure
todosomayprovideinaccuratereadings.
Step 2
Usinganohmmeter,checktheresistancevalueofthecoil.The
resistancevalueofthecoilshouldbe1.2kiloohmsto1.8kiloohms.
Replacethevalvecoilifthereadingissignicantlydierent,orifthe
coilshowsopenorshorted.
Step 3
Re-seattheplugontheconnectorattheconclusionofthetest.
Iftheoutdoorfaninitiallyruns,increasesspeed,thenstops,andthe
ServiceMonitorBoardindicatesanerrorcodeof09,thefeedback
circuitisnotfunctioning.Checkthatthewiringandplugconnections
areingoodcondition.
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ENGLISH
OUTDOOR UNITS
B12
Checking the Basepan Heater
Useamultimetertomeasuretheresistanceatbothendsofthe
heatingwireharnessterminal.Theresistancevalueis76.6Ω-103.7Ω.
Checking the Reactor
Useamultimetertotesttheresistancebetweentwoterminalsofa
reactor.Themaximumresistanceis130mΩ.
SERVICE PROCEDURES
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HIGHWALL INDOOR UNITS
C1
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HIGHWALL INDOOR UNITS
COMPONENTS .......................................................................................................................................................................C2
IndoorComponentIdentication ..........................................................................................................................................C2
TerminalBlock .........................................................................................................................................................................C3
Display .....................................................................................................................................................................................C3
AmbientTemperatureSensor ...............................................................................................................................................C3
PipingTemperatureSensor ...................................................................................................................................................C3
LouverStepperMotor ............................................................................................................................................................C4
FanMotor ................................................................................................................................................................................C4
EmergencyButton ..................................................................................................................................................................C4
IndoorUnitControlBoard ......................................................................................................................................................C5
WIRING DIAGRAM ................................................................................................................................................................... C7
DIP SWITCH SETTINGS
..........................................................................................................................................................C8
SERVICE PROCEDURES
..........................................................................................................................................................C9
CheckingtheIndoorUnitSensors .........................................................................................................................................C9
CheckingtheStepperMotors ................................................................................................................................................C9
TABLE OF CONTENTS
GS09WB1BEA
GS12WB1BEA
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Indoor Component Identication
Theindoorunitismountedhighonthewalltoprovidecomfortandairmovementwithintheconditionedspace.Featuresofthesysteminclude:
Variablespeedbloweroperationthatspeedsupandslowsdownwithchangesindemand,movinglouverstodirectair,indoorairtemperature
sensing,evaporatorcoiltemperaturesensing,astatusdisplay,evaporatorcoilwithmeteringdevicelocatedinoutdoorunit,andanemergency
operationbutton.
COMPONENTS
AmbientTemperatureSensor
DisplayPanel
FanMotor
LouverMotors
PowerControlBoard(PCB)
PipingTemperatureSensor
TerminalBlock
R454BLeakagesensor
1
2
3
4
5
6
7
8
3
2
1
5
6
7
8
4
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COMPONENTS
Terminal Block
Ambient Temperature Sensor
Theunitterminalblockreceiveselectricalpowerfromtheoutdoor
unit.Thereare4connectionsforelectricalwires.Terminals1and2
areconnectedtoterminals1and2oftheoutdoorunit.Thiswiring
suppliespowertotheindoorunit.
Terminal3isacommunicationwire.Theindoorunitsendsindoorair
temperature,coiltemperatureandtemperaturesetpointinformation
totheoutdoorunitonthiswire.Ifaspliceorbreakinthiswireis
present,theindoorunitwillnotbeabletocommunicatewiththe
outdoorunit.TheERRORCODEwillbeanE7.
TheAmbient(room)TemperatureSensorisanegativecoecient
thermistorthatwilldecreaseinresistancewithincreasesinroomair
temperature.Thesensorislocatedonaclipmountedinthereturnair
stream.
ThesensorconnectstothecontrolboardatPlugCN-6.
Piping Temperature Sensor
ThePipingTemperatureSensorisanegativecoecientthermistor
thatwilldecreaseinresistancewithincreasesincoiltemperature.
Thesensorislocatedinasocketsolderedtothesurfaceofthe
indoorcoil.
Thissensorwillmonitorthetemperatureoftheindoorcoilinboth
coolingandheatingmodesofoperation.Shouldabnormallycoldor
hotcoiltemperaturebedetectedbythissensor,thesystemwilltake
stepstocorrecttheconditionorreportanERRORCODE.
ThesensorconnectstothecontrolboardatPlugCN-6.
Display
Theindoordisplayhasaninfraredcommunicationcircuitthat
receivesTheindoordisplayhasaninfraredcommunication
circuitthatreceivesoperatingcommandsfromtheremote
control.Thisdisplaywillindicateoperatingmodes,error
codes,indoorairtemperature,timerstatus,andpower
status.
ThedisplayboardconnectstothecontrolboardatPlugCN-7.
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COMPONENTS
Louver Stepper Motor
Fan Motor
Emergency Button
TheFanMotorisavariablespeedmotor.Fanspeedwillvary
dependinguponthetemperaturevariationfromsetpoint,orcanbe
setwiththeremotecontroltomaintainasinglesetspeed.
TheFanMotorisconnectedtotheindoorcontrolboardviaPLUG
CN-9.
Iftheremotecontrolisnon-functional,theEmergencyButtoncanbe
used.73-78
O
Fwillbemaintained,untilcommandsarereceivedvia
theremotecontrol.
Themotormovesthelouversidetosidedependinguponselections
madeattheremotecontrol.
ThesemotorsareconnectedatCN-5.
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C5
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Indoor Unit Control Board
COMPONENTS
13
8 11 49
14
105 2
12
3
67
15
1
2
CN27:ConnectorforGND
4
CN9:Connectorforfanmotor
8
CN1:Connectorfornon-polarwirecontroller
10
CN6:Connectorforthetemperaturesensor
12
CN35:ConnectorfortheWIFI
CN17andCN21:115ACpowerfromterminal
blockconnections1(N)and2(L)
1
CN7:Connectorforthedisplayboard
7
CN14:Connectorforemergencyswitch
5
CN3:Connectorfortheleakagesensor
11
CN23:Communicationconnectionbetweenthe
indoorboardandtheoutdoorboard
3
CN51:Connectorfortheroomcard
9
CN36:Connectorforthecentralizedcontroller
6
CN5:Connectorfortheup-downstepmotor
13
14
CN2:ConnectorfortheOTA
15
CN38:ConnectorfortheRJ45
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C6
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COMPONENTS
13
811
4
9
14
105
3
12
267
15
1
2
CN27:ConnectorforGND
4
CN9:Connectorforfanmotor
8
CN1:Connectorfornon-polarwirecontroller
10
CN6:Connectorforthetemperaturesensor
12
CN35:ConnectorfortheWIFI
CN17andCN21:115ACpowerfromterminal
blockconnections1(N)and2(L)
1
CN7:Connectorforthedisplayboard
7
CN14:Connectorforemergencyswitch
5
CN3:Connectorfortheleakagesensor
11
CN23:Communicationconnectionbetweenthe
indoorboardandtheoutdoorboard
3
CN51:Connectorfortheroomcard
9
CN36:Connectorforthecentralizedcontroller
6
CN5:Connectorfortheup-downstepmotor
13
14
CN2:ConnectorfortheOTA
15
CN38:ConnectorfortheRJ45
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HIGHWALL INDOOR UNITS
C7
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WIRING DIAGRAM
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HIGHWALL INDOOR UNITS
C8
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DIP SWITCH SETTINGS
SW2-1 SW2-2 SW2-3 SW2-4 Setting Description
OFF OFF OFF OFF 0# Default
OFF OFF OFF ON 1#
OFF OFF ON OFF 2#
OFF OFF ON ON 3#
OFF ON OFF OFF 4#
OFF ON OFF ON 5#
OFF ON ON OFF 6#
OFF ON ON ON 7#
ON OFF OFF OFF 8#
ON OFF OFF ON 9#
ON OFF ON OFF 10#
ON OFF ON ON 11#
ON ON OFF OFF 12#
ON ON OFF ON 13#
ON ON ON OFF 14#
ON ON ON ON 15#
DIP SW2
SW3-1 SW3-2 Setting Description
OFF --
CentralController Default
ON -- 24vController
-- OFF RefrigerantLeakDetectorDisable Default
-- ON RefrigerantLeakDetectorEnable
DIP SW3
J1 J2 DisplayBoardModel Description
OFF OFF 0011800325/0011800798
OFF ON 0011800324
ON OFF 0011800387 Default
ON ON 0011800317
Jumpers J1-J2
J7 J8 DisplayBoardModel Description
OFF OFF
Caliber115V9K
OFF ON Caliber115V12K
ON OFF Reserved
ON ON Reserved
Jumpers J7-J8
J3 J4 J5 J6 Setting Description
OFF -- -- --
WiFi2.18Protocol
ON -- -- -- WiFiGE3Protocol Default
-- OFF -- -- RemoteControlB
-- ON -- -- RemoteControlA Default
-- -- OFF -- RoomCardValid
-- -- ON -- RoomCardInvalid Default
-- -- -- OFF Sub
-- -- -- ON Main Default
Jumpers J3-J6
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C9
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Testingofthefollowingcomponentsrequirestheuseofanohmmeterandk-typetemperatureprobe.
NOTE: When using the test probes, probe the back or side contacts of the plug to obtain the reading. Do not try to probe the connector end of the
plug, as this may damage the contacts.
Checking the Indoor Unit Sensors
NOTE: Use respective temperature / sensor chart for sensor type being
tested.
• Coilsensor
• Ambientsensor
Step 1
DisconnectthesensorfromthePCBforthistest.Failuretodoso
mayprovideinaccuratereadings.
Step 2
Determinethetemperatureofthesensorbeingtested.
Step 3
Checktheresistancevalueofthesensor.
Step 4
Referringtothetemperature/resistancetableforthesensorbeing
checked,verifytheresistancevaluecorrespondstothetemperature
checkedinstep2.
Replacethesensorifthereadingisopen,shorted,oroutside
Step 5
Re-seattheplugonthePCBattheconclusionofthetest.
Checking the Stepper Motors
Step 1
DisconnecttheStepperMotorplugPCBforthetest.Failuretodoso
mayprovideinaccuratereadings.
Step 2
Refertothechartshownbelowforplugpincombinationsand
resistancevalues.
Red
Blue
200Ω
Violet 200Ω
Yellow 200Ω
Orange 200Ω
Step 3
Re-seattheplugontheconnectorattheconclusionofthetest.
SERVICE PROCEDURES
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TROUBLESHOOTING & REFERENCES
D1
ENGLISH
TROUBLESHOOTING & REFERENCES
ERROR CODES ........................................................................................................................................................................D2
TROUBLESHOOTING FLOWCHARTS
......................................................................................................................................D3
E1/LED1:NoFlash ................................................................................................................................................................. D3
E2/LED1:NoFlash ................................................................................................................................................................. D3
F21/LED1:10Flash ............................................................................................................................................................... D3
F25/LED1:13Flash ............................................................................................................................................................... D3
F6/LED1:12Flash .................................................................................................................................................................. D3
E4 ......................................................................................................................................................................................... D4
F12/LED1:1Flash ................................................................................................................................................................. D4
F20/LED1:5Flash .................................................................................................................................................................. D4
E14 ......................................................................................................................................................................................... D5
F1/LED1:2Flash .................................................................................................................................................................... D6
F8/LED1:9Flash .................................................................................................................................................................... D7
F19/LED1:6Flash .................................................................................................................................................................. D8
F22/LED1:3Flash .................................................................................................................................................................. D9
F2/LED1:25Flash .................................................................................................................................................................. D9
F4/LED1:8Flash .................................................................................................................................................................. D10
E7/LED1:15Flash ............................................................................................................................................................... D11
F11/LED1:18or19Flash .................................................................................................................................................... D12
LED1:21Flash ..................................................................................................................................................................... D12
LED1:28Flash ..................................................................................................................................................................... D13
E22/LED1:21Flash ............................................................................................................................................................. D13
F27/LED1:21Flash ............................................................................................................................................................. D13
F2/LED1:24Flash ................................................................................................................................................................ D14
bA ....................................................................................................................................................................................... D15
AAandAb ............................................................................................................................................................................. D16
Ac ....................................................................................................................................................................................... D17
Ad ....................................................................................................................................................................................... D18
AE ....................................................................................................................................................................................... D19
AF ....................................................................................................................................................................................... D20
SENSOR RESISTANCE VALUES .............................................................................................................................................D21
TABLE OF CONTENTS
1G09CB1BEA/ GS09WB1BEA
1G12CB1BEA / GS12WB1BEA
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TROUBLESHOOTING & REFERENCES
D2
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ERROR CODES
OUTDOOR UNITS
FAULT DESCRIPTION
INDOOR UNIT
LED DISPLAY DIGITAL DISPLAY
/ INDOORAMBIENTTEMPERATURESENSORFAILURE E1
/ INDOORCOILTEMPERATURESENSORFAILURE E2
/ INDOORPCBEEPROMFAILURE E4
/ INDOORFANMOTORMALFUNCTION E14
1 OUTDOOREEPROMFAILURE F12
2
IPMOVERCURRENTORSHORTCIRCUIT F1
5 MODULEOPERATEDOVERLOAD(COMPRESSOROVERLOADPROTECTION) F20
6 MODULELOWORHIGHVOLTAGE F19
7 COMPRESSORCURRENTSAMPLINGCIRCUITFAULT F27
8 OVERHEATPROTECTIONFORDISCHARGETEMPERATURE F4
9 MALFUNCTIONOFTHEDCFANMOTOR F8
10 MALFUNCTIONOFDEFROSTTEMPERATURESENSOR F21
12 AMBIENTTEMPERATURESENSORFAILURE F6
13 DISCHARGETEMPERATURESENSORFAILURE F25
15 COMMUNICATIONFAILUREBETWEENTHEINDOOR&OUTDOORUNIT E7
18 LOSSOFSYNCHRONISMDETECTION F11
21 INDOORUNITOVERLOADPROTECTION,HEATINGMODEONLY. /
24 COMPRESSORSTARTFAILURE,OVER-CURRENT F2
25 PHASECURRENTPROTECTION(IPM) F23
28 LACKOFREFRIGERANTORDISCHARGING /
3 ACCURRENTOVERLOAD F22
AA REFRIGERANTLEAKFAULT>10%LFL AA
Ab REFRIGERANTLEAKFAULT<8%LFL Ab
Ac LEAKSENSORCOMMUNICATIONFAULT Ac
Ad LEAKAGESENSORSELF-CHECKFAULT-SELFCHECKFAULT Ad
AE SENSORREACHINGENDOFLIFEWARNING AE
AF SENSORREACHINGENDOFLIFE AF
bA DIPSWITCHENABLED,NOSENSORDETECTED bA
TROUBLESHOOTING FLOWCHARTS
background
TROUBLESHOOTING & REFERENCES
D3
ENGLISH
Yes
Yes
Yes
Yes
No
No
No
Re-seat connector
Replace sensor. Go
to next step to test
the board as well
before replacing
sensor.
No
Replace main board.
Replace sensor as
well if resistance
was incorrect in the
previous step.
Re-seat and
re-check sensor
resistance with a
different meter.
Replace sensor
Start
Is connector plugged in and
seated securely?
Disconnect power and unplug senor
connector from the board.
Check resistance across the set of
wires for the faulting sensor. Does
the resistance correspond to the
temperature located in the respective
chart?
Reconnect sensor to the board and re-apply power.
Check voltage between the two corresponding solder
joints or through the top of the Molex connector
depending on sensor confıguration.
Is the voltage ~5VDC?
Is the temperature at the
sensor out of operating
range (+/- 3%)?
5V Discharge Temperature Sensor
5V Defrost Temperature Sensor
5V Ambient Temperature Sensor
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
E1/LED1: No Flash
Room Temperature Sensor Failure
E2/LED1: No Flash
Indoor Coil Temperature Sensor Failure
F21/LED1: 10 Flash
Defrost Temperature Sensor Failure
F25/LED1: 13 Flash
Discharge Temperature Sensor Failure
F6/LED1: 12 Flash
Ambient Temperature Sensor Failure
Detection Conditions:
Thermistor input is more than 4.92V or less than 0.08V
during compressor operation.
Possible Causes:
• Faulty connector connection
• Faulty thermistor
• Faulty PCB
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TROUBLESHOOTING & REFERENCES
D4
ENGLISH
Yes
No
The 10-minute
reboot has
corrected the issue
Replace PCB
After 10 minutes with the power off,
the 1-flash reappears with power
turned back on?
31-5000931 Rev. 0
No
Yes
After the unit has been cut off the
power for more than 20mins
Measure the resistance between 6 and 4,
6 and 2,5 and 3,5 and 1, and the resistance
between them is roughly the same,
all less than 100 ohms
Check whether the wiring
terminal CN16 of electronic
expansion valve is
connected well.
Connect the wires well
according to the wiring
diagram.
Yes
Replace the coil of electronic
expansion valve.
Yes
Check whether the refrigerant is
leaking; if yes, please charge the
refrigerant according to the
technical specification.
No
No
Replace main PCB
1
6
5
4
3
2
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
E4
Indoor EEPROM Error
F12/ LED1: 1 Flash
Outdoor EEPROM Error
Detection Conditions:
EEPROM data error or the EEPROM is
damaged
Possible Causes:
• Faulty EEPROM data
• Faulty EEPROM
• Faulty PCB
Error Codes (Indoor/Outdoor)
F20/LED1: 5 Flash
Module operated overload
(compressor overload protection)
Detection Conditions:
Measure the resistance between 6 and 4,6
and 2,5 and 3,5 and 1, and the resistance,
between them is roughly the same, all less
than 100 ohms.
Possible Causes:
• Electronic Expansion Value is bad
• Electronic Expansion Value terminal is
bad
• Lack of refrigerant
background
TROUBLESHOOTING & REFERENCES
D5
ENGLISH
Yes
Yes
Yes
Yes
No
Yes No
No
Fix incoming power
supply
Replace the fan
motor
Replace the main
board.
Replace the fan
motor
Replace the
main board.
Replace the
main board.
Replace the
main board.
Start
With the power off, turn the
fan by hand. Does it move /
rotate smoothly?
Check the incoming voltage. Is it 208/230VAC (+/-
10%) between L1/L2? 104/115VAC (+/- 10%) from
L1 to GROUND and L2 to GROUND?
Re-apply power. Does the fan
come on and spin?
Measure DC voltage at fan
motor plug CN9 between
the Pin 7 (BLUE) and Pin 4
(BLACK) wire while spinning
the fan motor.
Does it generate 2~9VDC?
Measure DC voltage at fan
motor plug CN9 between Pin 1
(RED) and Pin 4 (BLACK).
Does it measure 300~380VDC
(+/-10%)?
Measure DC voltage at fan motor
plug CN9 between Pin 5 (WHITE)
and Pin 4 (BLACK).
Does it measure between
13.5-16.5VDC?
No
No
No
Yes
Replace the main
board.
Replace the fan
motor
Measure DC voltage at fan motor
plug CN9 between Pin 6 (YELLOW)
and Pin 4 (BLACK).
Does it measure between 2-6VDC?
Measure DC voltage at fan motor
plug CN9 between the Pin 7 (BLUE)
and Pin 4 (BLACK) wire while
spinning the fan motor.
Does it generate 2~9VDC?
No
Yes
No
Yes
TROUBLESHOOTING FLOWCHARTS
Error Code (Indoor)
E14
Indoor Fan Motor Failure
Detection Conditions:
No rotation feedback signal detected
for 2 minutes
Possible Causes:
• Faulty fan motor
• Fan motor overheat protection
• Detection error due to faulty indoor
unit PCB
background
TROUBLESHOOTING & REFERENCES
D6
ENGLISH
PIN8
PIN13
GND
IPM Detect Process Below:
Correct the wiring
Is electric box wiring correct,
and is compressor wiring rmly
connected?
Is compressor normal (compressor coil
resistor, insulation)?
0010744188 2.67±5%Ω
Is power module normal?
Replace compressor
Replace power module
Yes
Yes
Yes
No
No
No
Solve or correct any
failures according to
relative information
Start
ENGLISH
Trigger condition:
The abnormal resistance value of R010
was collected, resulting F1 fault occures.
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F1/LED1: 2 Flash
IPM Power Module Failure
(PM power module protection)
Detection Conditions:
Amp limit hot 3 times in 30 minutes
Possible Causes:
• IPM bad
• Loose compressor wire
• Bad compressor
background
TROUBLESHOOTING & REFERENCES
D7
ENGLISH
No
Ye s
Ye s
Ye s
Ye s
No
Ye s
No
protection from wind.
Fix incoming power supply
Replace the fan motor
Replace the
fan motor.
Replace the
main board.
Start
Check the incoming voltage.
Is it 115VAC (+/- 10%) between L/N?
Does it move / rotate smoothly?
Re-apply power. Does the
fan come on and spin?
No
No
Replace the
main board.
Replace the
main board.
Measure DC voltage at fan motor IPM2 pin1
to GND,Does it measure 160~320VDC (+/-
10%)?
Measure DC voltage at fan motor IPM2
between Pin11 and pin8 ,Does it measure
between 13.5-16.5VDC?
Before going to the next step, is the
unit in an area susceptible to high
winds? High winds blowing into the
fan may cause added resistance
and subsequently lower fan speeds
enough to cause the unit to fault. If
this is the case the unit only faults
may need to be added.
Not Windy Windy
Measure the three wire harnesses of the
motor UVW, and check whether the
resistance values between any two wire
harnesses is 101±8%Ω
Replace the fan motor
No
Ye s
PIN1
GND
PIN8
PIN11
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F8/LED1: 9 Flash
Outdoor DC Fan Motor Fault
Detection Conditions:
Resistance values between any two wire
harness connections is 101 +8%Ω
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TROUBLESHOOTING & REFERENCES
D8
ENGLISH
Correct power supply
Correct the wiring
Replace power module
Correct power supply
Is power supply voltage
normal?
Is electric box wiring
correct?
Is power module voltage
between terminal P&N more
than 390V or less than 90V
during operation?
Replace power module
Yes
Yes
No
No
Check rectier, rector,
electrolytic capacitor on
inverter main circuit
No
Yes
Start
Replace power module
Correct power supply
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F19/LED1: 6 Flash
Power supply is over voltage or
under voltage
Detection Conditions:
• Abnormal voltage detection
• Terminal P&N more than 390V or less
than 90V during operation
• Possible Causes:
Supply voltage not as specied
• Faulty IPM module
• Faulty outdoor PCB
background
TROUBLESHOOTING & REFERENCES
D9
ENGLISH
Start
Ye s
Ye s
Ye s
Ye s No
No
No
Replace
connecting
pipe
Check for a fan motor
issue
or replace
Replace the EEV
Open louver
PCheck whether the DI I
switch SW-2 is correct？
Indoor louver closed?
The indoor fan rotates slowly
or abnormally
The outdoor EEV damaged
PAdj ust DI I switch
blockage of connecting
pipe
?
Ye sNo
No
The outdoor fan rotates
slowly or abnormally
Check for a fan motor
issue
or replace
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F22/LED1: 3 Flash
AC current overload
F2/LED1: 25 Flash
Phase current protection
Detection Conditions:
Current value is over 14.4A
Possible Causes:
• Incorrect compressor wiring
• The power module is bad
• The compressor is bad
background
TROUBLESHOOTING & REFERENCES
D10
ENGLISH
Yes
Yes
Yes
Yes No
No
No
Yes
No
Recover refrigerant,
remove moisture and
air from system, charge
with fresh refrigerant to
nameplate amount
Check for a fan motor
issue, restricted line set or
EEV, or lack of refrigerant
Check for a plugged coil or
fılter, a high load, or incorrect
refrigerant charge
Replace sensor
The discharge line temperature is
below 230°F/110°C?
The discharge sensor
ohmreading matches
the resistance table in the
Service Manual?
With system on, the discharge
sensor climbs to 230°F within a
short time, and the compressor
stops?
With system on, the discharge
sensor climbs to 230°F after
several minutes, and the
compressor stops?
Turn power off for 20 min. to
allow the discharge line to cool
Refrigerant static test (system
off for 20 min.) indicates
head pressure converted to
temperature is higher than
ambient?
Mesure this two wire to check resistance
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F4/LED1: 8 Flash
Overheat Protection for
Discharge Temperature
Detection Conditions:
Compressor discharge temperature
above 110
O
C
Possible Causes:
• Faulty electronic expansion valve
• Faulty thermistor
• Faulty PCB
background
TROUBLESHOOTING & REFERENCES
D11
ENGLISH
Replace wire
Is the communication wire is
shorted?
Is the communication wire
CN23 is disconnected?
Reconnect
Reconnect
Yes
No
No
Yes
Is the wiring connection sequence
correct according to the wiring
diagram?
No
Measure the outdoor terminal block voltage
between communication 3 and 2, and measure the
indoor terminal block between communication 3
and 2 to check. Is the communication wire ok?
Yes
Replace the
communication wire
Power o
Power on
No
Yes
Using a multimeter, measure the terminal
corresponding to the N-line voltage of CN21
from the indoor unit with the communication
failure. Is the voltage normal?
No
PCB is bad, replace PCB
outdoor terminal
indoor terminal
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
E7/LED1: 15 Flash
ID and OD Loss of
Communication
Detection Conditions:
Outdoor PCB communication failure
• Indoor PCB communication failure
Possible Causes:
• Communication wiring disconnected
• Faulty indoor PCB
• Faulty outdoor PCB
• Faulty Outdoor Fan (may cause com-
munication signal interference)
background
TROUBLESHOOTING & REFERENCES
D12
ENGLISH
No
No
Yes
Momentary loss of
building power or
acceptable power
quality
Replace compressor
Replace compressor
Replace IPM
Repair or replace
wiring or
connections
When power is off for 5
min. and turned back on,
the compressor runs?
A windings or grounding check
shows issues with compressor?
There is 50-200 VAC across the U, V, and
W solder points on the IPM?
The compressor wires are on the
correct terminals, free of breaks and the
connections at both end are secure?
Yes
Yes
Yes
No
No
No
No
Yes
Yes No
Start
Cycle power to the outdoor unit. Turn system on via
remote control. Does the error occur immediately?
Allow system to run until
error code is displayed
Troubleshoot the pipe
temperature sensor and
temperature monitoring
circuit of the indoor main
board. Replace components
found faulty.
Service the fan or clean
fılters as necessary.
Measure system charge level
and adjust as required.
Yes
Is the pipe at the location of
the pipe temperature sensor
under 149
O
F?
Is fan motor running properly
and fılters unobstructed?
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F11/LED1: 18 or 19 Flash
Loss of Compressor
Synchronization
Detection Conditions:
Compressor faulty, miswired or wiring
connection faulty
Possible Causes:
• Faulty wiring
• Faulty compressor
• Faulty PCB
Error Codes (Outdoor)
LED1: 21 Flash
Indoor Unit Over Temperature
(Heating Mode Only)
Detection Conditions:
Activated when the temperature being sensed
by the heat exchanger pipe sensor rises above
149
O
F twice in 30 minutes.
Possible Causes:
• Faulty electronic expansion valve
• Dirty heat exchanger
• Faulty heat-exchange sensor
• Refrigerant undercharge
Note: this is a resetting fault that will
not lockout operation.
background
TROUBLESHOOTING & REFERENCES
D13
ENGLISH
No
Ye s
No
Refilling refrigerant
Start
Measure the current between 1/2
Is it 0.6A - 2.5A?
Replace the Coil
Ye s
Replace the PCB
Check the coil leakage
Check the coil leakage
Check the discharge refrigerant
Ye s
No
Start
Measure whether the detection of indoor unit coil temperature
sensor is accurate?
clenupthestuffs
Ye s
Replace the coiltemperature
sensor
Check if there is any stuffs blocking
the air inlet
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
E22/LED1: 21 Flash
IDU Anti-Frosting Protection
Possible Causes:
• Coil temperature sensor
• IDU air inlet blockage
Error Codes (Indoor/Outdoor)
F27/LED1: 21 Flash
Compressor Current Sampling Circuit Fault
Detection Conditions:
It is compressor block fault, the compressor will not work when this fault happen. It also can be self recovery when this fault happens.
Possible Causes:
• Ambient temperature is too low
• Compressor damage
Error Codes (Indoor/Outdoor)
LED1: 28 Flash
Lack of Refrigerant or
Discharging
Detection Conditions:
Compressor operation frequency
more than 46Hz,the current between
0.6A and 2.5A
Possible Causes:
• Coil leakage
• Discharge refrigerant
background
TROUBLESHOOTING & REFERENCES
D14
ENGLISH
Put through thepower and
turn onthe unit
Check whether the compressor
has stopped operation for more than3mins.
The time for stop operation is not enough and
the system's high pressure and low pressure
is unbalanced.
Please wait for 3mins and then
turn on the unit again.
Check whether the compressor wire
(UVW) is connected and the connection
sequenceis correct.
Please improve the connection betweenthe
control board and the compressorand then
connect it well
according tothe wiring diagram.
Check whether the charging
amount of refrigerant is too much.
Does the unit startedup normally?
Charge the refrigerant according to
the Service Manual.
Does the unit startedup normally?
Replace the control board
Eliminate malfunction？
Replace the compressor
Trigger condition
:
• The abnormal resistance value of R020 was collected, resulting in
the F2 error code occurs
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor/Outdoor)
F2/LED1: 24 Flash
Module Operated Over Current
(Compressor Startup Failure)
Possible Causes:
• The power supply is abnormal
• Incorrect compressor wiring
• The power module is bad
• The compressor is bad
• System overload
background
TROUBLESHOOTING & REFERENCES
D15
ENGLISH
Check if the wiring harness is damaged
Replace the wiring harness
Replace the leakage sensor
Check if the wiring harness has poor contact
Reconnect the wiring harness
Check if the PCB is damaged
Replace the PCB
Connect the leakage sensor
Check if the leakage sensor is disconnected with Indoor PCB
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
bA
DIP Switch Enabled, No Sensor Detected
Detection Conditions:
DIP Switch Enabled, No Sensor Detected
Possible Causes:
• Loose wiring terminals
• Damaged wiring harness
• The leakage sensor is not connected
• PCB damage
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D16
ENGLISH
Check for refrigerant leakage
Replace the indoor unit or weld
the pipeline
Replace the leakage sensor
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
AA and Ab
Refrigerant Leakage Fault
Detection Conditions:
• AA: Refrigerant concentration over 10% LFL
• Ab: AA display after 5 minutes and refrigerant concentration of less than 8% LFL detected
Possible Causes:
• Pipe cracking
• The union nut is not secured
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D17
ENGLISH
Check if the wiring harness is damaged
Replace the wiring harness
Replace the leakage sensor
Check if the wiring harness has poor contact
Reconnect the wiring harness
Check if the PCB is damaged
Replace the PCB
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
Ac
Leakage Sensor Communication Fault
Detection Conditions:
The communication between the leakage sensor and the PCB is faulty
Possible Causes:
• Loose wiring terminals
• Damaged wiring harness
• PCB damage
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D18
ENGLISH
Check if the sensor itself is damaged
Replace the leakage sensor
Replace the leakage sensor
Measure whether the sensor voltage is normal
Replace the PCB or leakage sensor
Check the temperature of the usage environment
Normal temperature range -35 to 80 degrees
Celsius
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
Ad
Leakage Sensor Self-Check Fault
Detection Conditions:
Leakage sensor self-test failed
Possible Causes:
• Power supply overvoltage and undervoltage (5VDC)
• The temperature value detected by the leakage sensor exceeds the limit value
• Internal sensor error
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D19
ENGLISH
Check the actual usage time of the sensor
Actual usage time reaches 14.5 years
The unit power cycle
Replace the leakage sensor
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
AE
Leakage Sensor Reaching-End-of-Life Warning
Detection Conditions:
The sensor is 6 months away from the end of its life
Possible Causes:
• The sensor approaching the end of life
• End of life counting error of sensor
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D20
ENGLISH
Check the actual usage time of the sensor
Actual usage time reaches 15 years
The unit power cycle
Replace the leakage sensor
TROUBLESHOOTING FLOWCHARTS
Error Codes (Indoor)
AF
Leakage Sensor End- Of- Life
Detection Conditions:
The sensors have reached the end of life
Possible Causes:
• The sensor approaching the end of life
• End of life counting error of sensor
* Caution
Be sure to turn o power switch before connect or disconnect connector, or else parts damage may be occurred.
background
TROUBLESHOOTING & REFERENCES
D21
ENGLISH
SENSOR RESISTANCE VALUES
Abbr. Denition Type
tAo
Temperatureofoutdoorambient 10K
tc
Temperatureofoutdoorcondenser 10K
td
Temperatureofoutdoordischarge 50K
tE
Temperatureofoutdoordefrost 10K
tS
Temperatureofoutdoorsuction 10K
tdr
Temperatureofcompressordrivermodule 10K
Idr
Currentofthecompressor 10K
Abbr. Denition Type
tAI
Temperatureofindoorambient 10K
TCI
Temperatureofindoorcondenser 10K
Toci
HotGasLeavingthe4-WayValve 10K
Tc 2
EEVLiquidSensor 10K
Tc 1
EEVGasSensor 10K
Tm
ModuleTempSensor 10K
TAI
Temperatureofindoorambient(9K/12KCaliber&
AllCAC)
23K
10K Sensors:
Ambient(allexceptducted,cassette,and9K-12KCaliber)suction,gas,defrost,andpipesensors.
23K Sensors:Ambientsensorsforducted,cassette,and9K-12KCaliber
50K Sensors:Dischargesensors
°F °C
Normal(KΩ)
10K
SENSORS
23K
SENSORS
50K
SENSORS
-22 -30 147.95 513.115 12061.74
-20.2 -29 139.56 478.894 11267.87
-18.4 -28 131.70 447.408 10531.37
-16.6 -27 124.34 418.379 9847.72
-14.8 -26 117.44 391.564 9212.81
-13 -25 110.96 366.751 8622.85
-11.2 -24 104.89 343.754 8074.38
-9.4 -23 99.19 322.407 7564.22
-7.6 -22 93.83 302.567 7089.47
-5.8 -21 88.80 284.105 6647.45
-4 -20 84.07 266.905 6235.71
-2.2 -19 79.62 250.866 5851.99
-0.4 -18 75.44 235.895 5494.21
1.4 -17 71.50 221.911 5160.46
3.2 -16 67.79 208.838 4849.00
5 -15 64.30 196.609 4558.19
6.8 -14 61.01 185.163 4286.55
8.6 -13 57.91 174.443 4032.71
10.4 -12 54.99 164.399 3795.39
12.2 -11 52.23 154.983 3573.43
14 -10 49.62 146.153 3365.73
15.8 -9 47.17 137.87 3171.31
17.6 -8 44.85 130.096 2989.25
19.4 -7 42.65 122.799 2818.67
21.2 -6 40.58 115.946 2658.81
23 -5 38.62
109.51 2508.91
24.8 -4 36.77 103.462 2368.32
26.6 -3 35.01 97.779 2236.39
28.4 -2 33.36 92.437 2112.55
30.2 -1 31.78 87.415 1996.25
32 0 30.30 82.691 1887.00
33.8 1 28.89 78.248 1784.33
35.6 2 27.55 74.067 1687.81
37.4 3 26.29 70.133 1597.04
39.2 4 25.09 66.43 1511.65
41 5 23.95 62.943 1431.28
42.8 6 22.87 59.659 1355.62
44.6 7 21.84 56.566 1284.36
46.4 8 20.87 53.651 1217.23
48.2 9 19.94 50.904 1153.96
50 10 19.06 48.314 1094.32
51.8 11 18.23 45.872 1038.07
53.6 12 17.43 43.569 985.01
55.4 13 16.68 41.395 934.94
57.2 14 15.96 39.343 887.68
59 15 15.28 37.406 843.05
60.8 16 14.63 35.577 800.89
62.6 17 14.01 33.848 761.06
64.4 18 13.42 32.215 723.41
66.2 19 12.86 30.671 687.82
68 20 12.32 29.21 654.16
69.8 21 11.81 27.828 622.32
71.6 22
11.33 26.521 592.18
73.4 23 10.86 25.283 563.66
75.2 24 10.42 24.111 536.65
77 25 10.00 23 511.08
78.8 26 9.60 21.947 486.94
80.6 27 9.21 20.949 464.05
°F °C
Normal(KΩ)
10K
SENSORS
23K
SENSORS
50K
SENSORS
82.4 28 8.85 20.003 442.35
84.2 29 8.50 19.104 421.77
86 30 8.16 18.252 402.24
87.8 31 7.84 17.442 383.72
89.6 32 7.54 16.674 366.13
91.4 33 7.25 15.943 349.43
93.2 34 6.97 15.249 333.58
95 35 6.70 14.588 318.52
96.8 36 6.45 13.96 304.22
98.6 37 6.20 13.362 290.62
100.4 38 5.97 12.794 277.70
102.2 39 5.75 12.252 265.41
104 40 5.53 11.736 253.73
105.8 41 5.33 11.244 242.62
107.6 42 5.13 10.776 232.04
109.4 43 4.94 10.329 221.98
111.2 44 4.76 9.904 212.41
113 45 4.59 9.497 203.29
114.8 46 4.43 9.11 194.61
116.6 47 4.27 8.74 186.34
118.4 48 4.11 8.387 178.46
120.2 49 3.97 8.05 170.95
122 50 3.83 7.728 163.80
123.8 51 3.69 7.421 156.97
125.6 52 3.57 7.127 150.47
127.4 53 3.44
6.846 144.26
129.2 54 3.32 138.35
131 55 3.21 132.70
132.8 56 3.10 127.31
134.6 57 2.99 122.16
136.4 58 2.89 117.25
138.2 59 2.79 112.56
140 60 2.70 108.08
141.8 61 2.61 103.80
143.6 62 2.52 99.70
145.4 63 2.44 95.79
147.2 64 2.36 92.06
149 65 2.28 88.48
150.8 66 2.21 85.06
152.6 67 2.14 81.79
154.4 68 2.07 78.66
156.2 69 2.00 75.67
158 70 1.94 72.80
159.8 71 1.88 70.06
161.6 72 1.82 67.43
163.4 73 1.76 64.91
165.2 74 1.71 62.50
167 75 1.65 60.19
168.8 76 1.60 57.98
170.6 77 1.55 55.86
172.4 78 1.51 53.82
174.2 79 1.46 51.87
176 80 1.41 50.00
177.8 81 1.37 48.21
179.6 82 1.33 46.48
181.4 83 1.29 44.83
183.2 84 1.25 43.25
185 85 1.22 41.72
°F °C
Normal(KΩ)
10K
SENSORS
23K
SENSORS
50K
SENSORS
186.8 86 1.18 40.26
188.6 87 1.14 38.85
190.4 88 1.11 37.50
192.2 89 1.08 36.21
194 90 1.05 34.96
195.8 91 1.02 33.77
197.6 92 0.99 32.62
199.4 93 0.96 31.51
201.2 94 0.93 30.45
203 95 0.91 29.42
204.8 96 0.88 28.44
206.6 97 0.86 27.50
208.4 98 0.83 26.59
210.2 99 0.81 25.71
212 100 0.79 24.87
213.8 101 0.76 24.06
215.6 102 0.74 23.28
217.4 103 0.72 22.52
219.2 104 0.70 21.80
221 105 0.68 21.10
222.8 106 0.67 20.43
224.6 107 0.65 19.78
226.4 108 0.63 19.16
228.2 109 0.61 18.56
230 110 0.60 17.98
231.8 111 0.58 17.42
233.6 112 0.57 16.88
235.4 113 0.55 16.36
237.2 114 0.54 15.85
239 115 0.52 15.37
240.8 116 0.51 14.90
242.6 117 0.50 14.45
244.4 118 0.48 14.01
246.2 119 0.47 13.59
248 120 0.46 13.19
249.8 121 12.80
251.6 122 12.42
253.4 123 12.05
255.2 124 11.70
257 125 11.35
258.8 126 11.02
260.6 127 10.70
262.4 128 10.40
264.2 129 10.10
266 130 9.81
267.8 131 9.53
269.6 132 9.26
271.4 133 9.00
273.2 134 8.74
275 135 8.50
276.8 136 8.26
278.6 137 8.03
280.4 138 7.81
282.2 139 7.60
284 140 7.39
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