Hitachi RPC-5.0FSR User manual

A10762290A
Operation
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
Type Model
Ceiling
RPC-1.5FSR
RPC-2.0FSR
RPC-2.5FSR
RPC-3.0FSR
RPC-4.0FSR
RPC-5.0FSR
RPC-6.0FSR
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS HEAT PUMP
AIR CONDITIONERS.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.

A10762290A i
IMPORTANT NOTICE
● HITACHIpursuesapolicyofcontinuingimprovementindesignandperformanceofproducts.
Therightisthereforereservedtovaryspecicationswithoutnotice.
● HITACHIcannotanticipateeverypossiblecircumstancethatmightinvolveapotentialhazard.
● Thisheatpumpairconditionerisdesignedforstandardairconditioningonly.Donotusethisheatpump
airconditionerforotherpurposesuchasdryingclothes,refrigeratingfoodsorforanyothercoolingor
heatingprocess.
● Donotinstalltheunitinthefollowingplaces.Itmaycauseare,deformation,corrosionorfailure.
*Placeswhereare,oil,steamorpowdermayenterdirectlytotheunitsuchasrightaboveakitchen,etc.
*Placeswhereoil(includingmachineryoil)maybepresentinquantities.
*Placeswherealotofsuldegasdriftssuchasinahotspring.
*Placeswhereinammablegasmaygenerateorow.
*Placeswherestrongsaltywindblowssuchascoastregions.
*Placeswithanatmosphereofacidityoralkalinity.
*Placeswheregasfromfesteringtrash,etc.maygenerate.
● Donotinstalltheunitintheplacewheresilicongasdrifts.Ifthesilicongasattachestothesurfaceofheat
exchanger,thensurfacerepelswater.Asaresult,drainwatersplashesoutsideofthedrainpanand
splashedwaterrunsinsideofelectricalbox.Intheend,waterleakageorelectricaldevicesfailuremay
occur.
● Payattentiontothefollowingpointswhentheunitisinstalledinahospitalorotherfacilitieswherean
electromagneticwavegeneratesfromamedicalequipment.
*Donotinstalltheunitintheplacewhereanelectromagneticwaveisdirectlyradiatedtotheelectricalbox,
controllercableorwiredcontroller.
*Installtheunitatleast3metersawayfromanelectromagneticwavesuchasaradio.
● Donotinstalltheunitintheplacewherethebreezedirectlycatchesanimalsandplants.Itcouldadversely
a󰀨ectanimalsandplants.
● Theinstallerandsystemspecialistshallsecuresafetyagainsttherefrigerantleakageaccordingtolocal
regulationsorstandards.Thefollowingstandardsmaybeapplicable,iflocalregulationsarenotavailable.
InternationalOrganizationforStandardization,ISO5149orEuropeanStandard,EN378orJapanStandard,
KHKS0010.
● Nopartofthismanualmaybereproducedwithoutwrittenpermission.
● ItisassumedthatthisheatpumpairconditionerwillbeoperatedandservicedbyEnglishspeakingpeople.
Ifthisisnotthecase,thecustomershouldbeprovidedwithsafety,cautionandoperatingsignsinthe
nativelanguage.
● Ifyouhaveanyquestions,contactyourdistributorordealerofHITACHI.
● Thismanualprovidescommondescriptions,basicandadvancedinformationtomaintainandservicethis
heatpumpairconditioningunitwhichyouoperateaswellforothermodels.
● Thisappliancemustbeusedonlybyadultandcapablepeople,havingreceivedthetechnicalinformation
orinstructionstohandlethisapplianceproperlyandsafely.
● Childrenshouldbesupervisedtoensurethattheydonotplaywiththeappliance.
● Cleaningandusermaintenanceshallnotbemadebychildrenwithoutsupervision.
● Thisproductisdesignedforstandardairconditioningonly.
DONOTusethisproductforspecicpurposes,suchasrestoringfoods,animals&plants,precision
devices,artobjects,etc.

ii A10762290A
CHECKING PRODUCT RECEIVED
● Uponreceivingthisproduct,inspectitforanyshippingdamage.
Claimsfordamage,eitherapparentorconcealed,shouldbeledimmediatelywiththeshippingcompany.
● Checkthemodelnumber,electricalcharacteristics(powersupply,voltageandfrequency)andaccessories
todetermineiftheyarecorrect.
Thestandardutilizationoftheunitshallbeexplainedintheseinstructions.
Therefore,theutilizationoftheunitotherthanthoseindicatedintheseinstructionsisnotrecommended.
Pleasecontactyourlocalagent,astheoccasionarises.
HITACHI’sliabilityshallnotcoverdefectsarisingfromthealterationperformedbyacustomerwithout
HITACHI’sconsentinawrittenform.
 Thismanualshouldbeconsideredasapermanentpartoftheairconditioningequipmentandshould
remainwiththeairconditioningequipment.
● DONOTinstallthelowercoverwithmotionsensorinthefollowingplaces.
Itmaycausemisdetection,undetectableofmotionorthedeteriorationofthemotionsensor.
*Placeswhereambienttemperaturechangesdrastically.
*Placeswhereexcessiveforceorvibrationisappliedtothemotionsensor.
*Placeswherestaticelectricityorelectromagneticwavesmaygenerate.
*Placeswhereisinterferenceforinfraredlightsuchasglassesormistinadetectingarea.
*Placeswherethelensformotionsensorisexposedinhightemperatureandhumidityforalongtime.
*Placeswhereuidandcorrosivegasexist.
*Placeswheredirectlightssuchassunlightorheadlighta󰀨ectthemotionsensor.
*Placeswherehotairfromaheater,etc.a󰀨ectsdirectlythemotionsensor.
*Placeswheretheairowreturnstothemotionsensorbyhittingobstaclessuchasshelf,locker,etc.
*Placeswheretheblowerdevicessuchasceilingfan,ventilatingfan,etc.a󰀨ecttheairowfromthe
indoorunit.
*Placeswhereweathera󰀨ectsdirectlythesurfaceofthemotionsensor.
*Placeswherethelenssurfacemaysmudgeorbedamagedsuchasadustyenvironment.
Payattentionthatthedetectingfunctionwillbedecreasedifthelensformotionsensorsmudges.
Inthiscase,wipeo󰀨smudgesbyacottonswabsoakedalcohol(Isopropylalcoholisrecommended.)
orasoftcloth.
(Whenwipingo󰀨smudgesonthelensformotionsensor,donotapplyexcessiveforce.
Ifexcessiveforceisapplied,theresinlensmaybedamagedsothatmaycausemalfunctionssuchas
misdetectionorundetectableofthemotion.)
● Thisheatpumpairconditioningunithasbeendesignedforaspecictemperaturerange.Foroptimum
performanceandlonglife,operatethisunitwithintherangelimitsaccordingtothetablebelow.
Temperature
Maximum Minimum
Cooling
Operation
Indoor 32oCDB/23oCWB 21oCDB/15oCWB
Outdoor 48oCDB* -10oCDB*
Heating
Operation
Indoor 27oCDB 15oCDB
Outdoor 15oCWB* -20oCWB*
DB:DryBulb,WB:WetBulb
*Thetemperaturemaychangedependingontheoutdoorunit.

A10762290A iii
TABLE OF CONTENTS
1. SafetySummary .............................................................................................................................................1
2. BeforeOperation.............................................................................................................................................6
2.1 E󰀩cientUseofIndoorUnit.....................................................................................................................6
2.2 E󰀩cientUseofCoolingandHeating......................................................................................................6
3. NameofPartsandIndicationofSafetyConsideration ...................................................................................7
3.1 IndoorUnit..............................................................................................................................................7
3.2 WiredController .....................................................................................................................................8
4. OperationMethod ...........................................................................................................................................9
5. SettingMethod................................................................................................................................................9
6. Operation ........................................................................................................................................................9
7. OperationLock................................................................................................................................................9
8. MenuOperation ..............................................................................................................................................9
9. MotionSensor...............................................................................................................................................10
9.1 Function................................................................................................................................................10
9.2 DetailsforMotionSensorControl ........................................................................................................10
9.3 DescriptionsforSettingItems .............................................................................................................. 11
9.4 SettingofMotionSensor ...................................................................................................................... 11
9.5 FrostWash ............................................................................................................................................12
9.6 PreventExcessiveCooling...................................................................................................................12
9.7 AirowOptimizationinHeatingMode ..................................................................................................12
10. OtherIndications...........................................................................................................................................13
10.1 InNormalCondition..............................................................................................................................13
10.1.1 CentralControl............................................................................................................................13
10.1.2 MotionSensorControl................................................................................................................13
10.1.3 Defrost ........................................................................................................................................13
10.1.4 OperationControl .......................................................................................................................13
10.1.5 ColdDraftControlduringCoolingOperation..............................................................................14
10.1.6 AutomaticHeating/CoolingOperation ........................................................................................14
10.1.7 SetbackOperation......................................................................................................................15
10.2 InAbnormalCondition ..........................................................................................................................15
10.2.1 Abnormality.................................................................................................................................15
10.2.2 PowerFailure..............................................................................................................................15
10.2.3 ElectromagneticInterference(EMI)............................................................................................15
11. AutomaticControl .........................................................................................................................................15
12. SimultaneousOperation ...............................................................................................................................16
13. Maintenance .................................................................................................................................................16
13.1 DailyMaintenance................................................................................................................................16
13.1.1 CleaningAirFilter .......................................................................................................................16
13.1.2 Removing,AttachingandCleaningAirInletGrille ......................................................................18
13.2 MaintenanceBeginningandEndingofUse .........................................................................................18
14. Troubleshooting ............................................................................................................................................19
14.1 ThisisNotAbnormal ............................................................................................................................19
14.2 BeforeContact .....................................................................................................................................20
14.3 ContactDistributor................................................................................................................................21
14.4 AlarmCode ..........................................................................................................................................22

<SignalWords>
● Signalwordsareusedtoidentifylevelsofhazardseriousness.
Denitionsforidentifyinghazardlevelsareprovidedbelowwiththeirrespectivesignalwords.
: DANGERindicatesahazardoussituationwhich,ifnotavoided,
willresultindeathorseriousinjury.
: WARNINGindicatesahazardoussituationwhich,ifnotavoided,
couldresultindeathorseriousinjury.
: CAUTION,usedwiththesafetyalertsymbol,indicatesahazardoussituationwhich,
ifnotavoided,couldresultinminorormoderateinjury.
: NOTICEisusedtoaddresspracticesnotrelatedtopersonalinjury.
: NOTEisusefulinformationforoperationand/ormaintenance.
A10762290A 1
1. Safety Summary
DANGER
WARNING
CAUTION
NOTICE
NOTE

2 A10762290A
● Donotperformtheinstallationwork,refrigerantpipingwork,drainpump,drainpipingandelectricalwiring
connectionwithoutreferringtoourinstallationmanual.Iftheinstructionsarenotfollowed,itmayresultin
awaterleakage,electricshockorare.
● ThismachineusesrefrigerantR410AorrefrigerantR32.
Thetypeofenclosedrefrigerantisdescribedinthespecicationnameplateandcautionnameplate
attachedtotheoutdoorunit.Wheninstalling,repairing,orrelocating,donotmixsubstancesotherthanthe
refrigerantdescribedonthespecicationnameplateorcautionnameplateattachedtotheoutdoorunit.
Also,donotmixrefrigerantR410AandrefrigerantR32.Enteringnon-designatedrefrigerants,air,oxygen,
ammablesubstancessuchaspropaneoralcoholmaycauseexplosion,reorinjury.
● Donotpourwaterintotheindoorunit.Theseproductsareequippedwithelectricalparts.
Ifpoured,itwillcauseaseriouselectricalshock.
● DonotopentheservicecoverfortheindoororoutdoorunitwithoutturningOFFthemainpowersupply.
● Donottouchoradjustsafetydevicesinsidetheindoorunitoroutdoorunit.Ifthesedevicesaretouched
orreadjusted,itmaycauseaseriousaccident.
● Refrigerantleakagecancausedi󰀩cultywithbreathingduetoinsu󰀩cientair.TurnOFFthemainswitch,
extinguishanynakedamesandcontactyourservicecontractor,ifrefrigerantleakageoccurs.
● Makesurethatarefrigerantleaktesthasbeenperformed.Refrigerant(FluorocarbonorDiuoromethane)
forthisunitisnon-toxic,andodorless.Iftherefrigerantshouldsomehowescapeandcomeintocontact
withame,toxicgaswillform.Thisgasisheavierthanairandwillsettlenearoorareasandspread
whereitcancausesu󰀨ocationtothosenearby.Inaddition,diuoromethaneisammableandcancause
re.
● Theinstallerandsystemspecialistshallsecuresafetyagainstrefrigerantleakageaccordingtolocal
regulationsorstandards.
● UseanELB(EarthLeakageBreaker).
Intheeventoffault,thereisdangerofanelectricshockorareifitisnotused.
● Donotinstalltheoutdoorunitwherethereishighlevelofoilmist,ammablegases,saltyairorharmful
gasessuchassulfur.
● Forinstallation,rmlyconnecttherefrigerantpipebeforethecompressorstartsoperating.
Formaintenance,relocationanddisposal,removetherefrigerantpipeafterthecompressorstops.
● Donotperformashort-circuitoftheprotectiondevicesuchasthepressureswitchwhenoperating.
Itmaycauseareandexplosion.
● Donotaltertheproductandtheelectricalwiring.Itwillcauseaseriousaccident.
● Donotinstalltheindoorunitinammableenvironmenttoavoidreoranexplosion.
● Asthenewrefrigerant(R410AorR32)isadopted,therefrigerantoilhasbeenalsochanged,whichtends
tobea󰀨ectedbyforeignmatterssuchasmoisture,oxidelm,fat.Performtheinstallationworkwith
carenottoentermoisture,dustoroldrefrigerantintotherefrigerantcycle,otherwisethepartssuchas
expansionvalvebiteforeignmatterandtheoperationmaybeunavailable.
● Donotinsertthedrainpipetothedrainagetrenchwherecorrosivegasesoccur.Poisonousgasesow
intotheroom,sothatmaycausethepoisoning.
● CleaninginsideExistingRefrigerantPipe
*Non-ammableandnontoxicdetergentshallbeusedtocleanthepipe.Ifnot,itmaycauseare.
*Ventilatewell,otherwisecleaningthepipeinthesealedroommaycausesu󰀨ocation.Additionally,ifthe
detergentcontactsareandisunderhightemperature,itmaycausegenerationoftoxicgas.
*Thedetergentaftercleaningshallberecovered.Itisprohibitedtoemituorocarbonstotheatmosphere
withoutpermission.
DANGER

A10762290A 3
● Theinstallationworkshallbeperformedbythespecialistinstaller.
Ifitisnotcompleted,itmaycauseawaterleakage,anelectricshock,areorfallingdowntheunit.
● PerformtheelectricalworkaccordingtoInstallationManualandalltherelevantregulationandstandards.
Iftheinstructionsarenotfollowed,anelectricalshockandremayoccurduetoinsu󰀩cientcapacityand
inadequateperformance.
● Theelectricalwiringworkmustbeperformedbyauthorizedinstallers.
Ifnotperformingtheelectricalworkcompletelyoracapacityshortageofthepowercircuit,itmaycausean
electricshockorare.
Additionally,iftheearthwireisdisconnected,itmaycauseanelectricshock.
Contacttheauthorizedinstallerandconnecttheearthwiring.
● Ifthecircuitbreakerorfuseisoftenactivated,stopthesystemandcontactyourservicecontractor.
● Checkthatthegroundwireissecurelyconnected.Iftheunitisnotcorrectlygrounded,itwillleadelectric
shock.Donotconnectthegroundwiringtoagaspiping,waterpiping,lightingconductororgroundwiring
fortelephone.
● Usespeciedcablesbetweenunitsandchoosethecablescorrectly.Ifnot,anelectricalshockorremay
occur.
● Ensurethatthewiringterminalsaretightenedsecurelywiththespeciedtorques.Ifnot,generatingreor
anelectricalshockattheterminalconnectionpartmayoccur.
● Connectafuseofspeciedcapacity.
● Protectthewires,electricalparts,etc.fromratsorothersmallanimals.
Ifnotprotected,ratsmaygnawatunprotectedpartsandwhichmayleadtoare.
● Fixthecablessecurely.Externalforcesontheterminalscouldleadtoare.
● Provideasu󰀩cientlystrongfoundation.Ifnot,theunitmayfalldownanditmayleadtoinjuries.
● Iftheindoorunitisinstalledinasmallroomandtherefrigerantgasleakageoccurs,theleakedrefrigerant
gasllstheroomanditmaycausesu󰀨ocation.
Donotexceedthemaximumpermissibleconcentrationoftherefrigerantgasintheroom.
Consultwithdistributorforcountermeasuresuchaventilationsystem,etc.
● Beforeperforminganybrazingwork,checktoensurethatthereisnoammablematerialaround.
Whenusingtherefrigerantbesuretowearleatherglovestopreventcoldinjuries.
● Donotinstalltheunitinaplacewhereoil,vapor,organicsolventandcorrosivegas(ammonia,sulfur
compoundandacid)maybepresentinquantities.
Itmaycauserefrigerantleakageduetocorrosion,electricalshock,deterioratedperformanceand
breakage.
● Donotinsertangerorstickintotheairoutletandtheairinlet.
Itcouldcauseinjuryduetotouchtherotatingfanorelectricaldevices.
● Donotcontrolthewiredcontrollerbywethand.
Itmaycausefailureofthewiredcontrolleroranelectricshock.
● Donotuseanysprayssuchasaninsecticide,lacquer,hairsprayorotherammablegaseswithin
approximatelyone(1)meterfromthesystem.Itmaygenerateare.
● Donotinstalltheindoorunitinaplacewheretheairowblowsdirectlytoheatingappliances.
Itmaycauseincompletecombustionoftheheatingappliances.
WARNING

4 A10762290A
● Whentheindoorunitisoperatedwithheatingappliances,ventilatearoomsu󰀩ciently.
Ifnot,itmaycausesu󰀨ocation.
● TurnOFFthemainpowersourceimmediatelyifthesafetydeviceisfrequentlyactivatedorthemainpower
sourceswitchdoesnotwork.
Ifnot,itmaycauseanelectricshock,areorexplosionbecausetherearepossibilitiesoftheelectrical
leakageorovercurrent,etc.Contactyourdistributororcontractor.
● Ifabnormality(burntodor,etc.)occurs,stoptheoperationandturnOFFthemainpowersource
immediately.Ifnot,itmaycausebreakageoftheproduct,anelectricshockorare.
Contactyourdistributororcontractor.
● Donotoperatetheindoorunitwithouttheelectricalboxcoverandtheairinletgrille.Itisunusually
dangerousthattheindoorfanandelectricalpartsareexposed.Inaddition,itmaycauseanelectricshock
duetotouchtheelectricalparts.
● Whentheairconditionerisnecessarytoberepairedorrelocated,contactyourdistributororcontractor.
Iftherepairandtheinstallationarenotcompleted,itmaycauseanelectricshockorare.
● Donotperformtheinstallationwork,therefrigerantpipingwork,thedrainpump,thedrainpipingand
electricalwiringconnectionwithouttuningOFFthemainpowersource.
Itmaycauseanelectricshockorinjury.
● Performthemaintenanceworkwithstablefooting.Ifnot,itmaycausefallingorinjury.
● Donotspraywaterordetergenttotheindoorunitwhenperformingthemaintenancework.
Itmaycauseanelectricshockorarebyelectricalshort-circuit.
● Protectsecurelytheelectricalpartsandconnectorsnottosplashwaterwhenperformingthemaintenance
work.Ifnot,itmaycauseanelectricshockorarebyelectricalshort-circuit.
● Theinsidepipingchargedrefrigerantishighpressure.Performsecurelytherefrigerantpipingworkbythe
authorizedinstaller.Ifnot,itmaycauseaseriousaccident.
Additional safety information for R32 refrigerant air conditioner and heat pump according
to IEC 60335-2-40: 2018.
Explanationofsymbolsdisplayedontheindoorunitoroutdoorunit.
WARNING
Thissymbolshowsthatthisequipmentusesa
ammablerefrigerant(A2L).
Iftherefrigerantisleaked,togetherwithanexternal
ignitionsource,thereisapossibilityofignition.
CAUTION ThissymbolshowsthattheOperationManualshould
bereadcarefully.
CAUTION
Thissymbolshowsthataservicepersonnelshould
behandlingthisequipmentwithreferencetothe
InstallationManual.
CAUTION Thissymbolshowsthatthereisinformationincludedin
theOperationManualand/orInstallationManual.
NOTE

A10762290A 5
● Donotsteporputanymaterialontheproduct.
● Donotputanyforeignmaterialontheunitorinsidetheunit.
●DonotturnOFFthemainpowersourceoftheindoorunitduringtheseasonofheatingandcooling.
Thewatercannotbedischargedforcedlysothatoverowsfromthedrainpan.
Astheresult,theoorandtheceilingsurfacearesmudged.
●Holdtheairlterandtheairinletgrillebyhandwhenattaching(removing).
Ifnot,itmaycausefallingorinjury.
● Donotblowcoldairtoapersonforalongtimeorovercool.
Itmaycausedeteriorationofphysicalconditionandhealthimpairment.
● Donothandletheunitbyoneperson.Althoughtheunitmaybepackedbypolypropyleneband,donot
useitfortransportation.Iftheunitishandledbyhand,thensurfaceofheatexchangercausesacut.
● Donotinstalltheindoorunit,outdoorunit,wiredcontrollerandcablewithinapproximately3metersfrom
strongelectromagneticwaveradiatorssuchasmedicalequipments.
● Supplyelectricalpowertothesystemtoenergizetheoilheaterfor12hoursbeforestartupafteralong
shutdown.
● Makesurethattheoutdoorunitisnotcoveredwithsnoworice,beforeoperation.
● Insomecases,thepackagedairconditionermaynotbeoperatednormallyunderthefollowingcases.
* Incasethatelectricalpowerforthepackagedairconditionerissuppliedfromthesamepower
 transformerasthedevice*.
*Incasethatthepowersourcewiresforthedevice*andthepackagedairconditionerarelocatedcloseto
 eachother.
Device*: (Ex) Lift,containercrane,rectierforelectricrailway,inverterpowerdevice,arcfurnace,
 electricfurnace,large-sizedinductionmotorandlarge-sizedswitch.
Itconsumesalargequantityofelectricalpower.
 Regardingthecasesmentionedabove,surgevoltagemaybeinductedinthepowersupplywiringforthe
packagedairconditionerduetoarapidchangeinpowerconsumptionofthedeviceandanactivationof
switch.
Therefore,checktheeldregulationsandstandardsbeforeperformingelectricalworkinordertoprotect
thepowersupplyforthepackagedairconditioner.
● Donotinstalltheunitintheplacewheretheairowdirectlycatchestoanimalsorplants.
Itcouldbethecauseofadversea󰀨ecttoanimalsorplants.
● Donotcreateanupper-slopeorriseforthedrainpipingsincedrainwatercanowbacktotheindoorunit
andleakageintotheroomwilloccur.
● Donotapplyexcessiveforcetothearenutwhentightening.Ifitisapplied,thearenutmaycrackdue
toageddegradationandrefrigerantleakagemayoccur.Usethespeciedtighteningtorque.
● Itisrecommendedthattheroomwillbeventilatedevery3to4hours.
● Theheatingcapacityoftheheatpumpunitisdecreasedaccordingtotheoutdoorairtemperature.
Therefore,itisrecommendedthatauxiliaryheatingequipmentbeusedintheeldwhentheunitsis
installedinalowtemperatureregion.
NOTICE
NOTE
CAUTION

2.1 E󰀩cientUseofIndoorUnit
●Do not leave a window or a door open.
Theoperatinge󰀩ciencywillbedecreased.
Itmaycausedewcondensationoftheindoorunit.(Ventilatearoomsu󰀩cientlytoo.)
●Attach a curtain or a blind to a window.
Directsunlightispreventedandthecoolinge󰀩ciencywillbeincreased.
●Do not use heating appliances during the cooling operation as possible.
Thecoolinge󰀩ciencywillbedecreased.Itmaycausedewcondensationanddroppingdew.
●Use a circulator if warm air stays around ceiling.
Thecomfortabilitywillbeincreased.Contactyourdistributorforthedetail.
●Turn OFF the main power source if the indoor unit is not used for a long time.
Ifnot,thestandbyelectricitychargeswillhavetobepaideveniftheindoorunitisunused.
2.2 E󰀩cientUseofCoolingandHeating
COOLING
(1) AirFlowDirection
Theappropriateairoutletangleisapprox.10o.
Ifthecoolingisnotsu󰀩cient,changetheairow
direction.
 (Refertotheitem4.3ontheoperationmanual
ofPC-ARF1.)
(2) AirFlowVolume
”MED”shouldbeusuallyused.Iftheairowvolume
issetas“HIGH”,theairowwillbespreadwiderthan
“MED”.
(3) Temperature
Therecommendedsettemperatureis27to29oC.
Ifthecoolingisnotsu󰀩cient,setthelower
temperature.
Louver Angle
Air Outlet Angle
10o
HEATING
(1) AirFlowDirection
Theappropriateairoutletangleisapprox.35o.
Iftheheatingisnotsu󰀩cient,changetheairow
direction.
 (Refertotheitem4.3ontheoperationmanual
ofPC-ARF1.)
(2) AirFlowVolume
”MED”shouldbeusuallyused.Iftheairowvolume
issetas“HIGH”,theairowwillbespreadwiderthan
“MED”.
(3) Temperature
Therecommendedsettemperatureis18to20oC.
Iftheheatingisnotsu󰀩cient,setthehigher
temperature.
Louver Angle
Air Outlet Angle
35o
6 A10762290A
2. Before Operation
NOTE
<AboutSETFREESeries>
Whenthenumberofindoorunitortheoperatingmodeischanged,theairoutlettemperaturemaybe
changedandtheindoortemperatureischanged.Inthiscase,setasfollows.
●DuringCooling:Lowerslightlythetemperaturesetting.
●DuringHeating:Raiseslightlythetemperaturesetting.

Indoor Unit
Air Outlet
Louver
Motion Sensor
(Option)
Air Inlet Grille
(Theairlterisattached
inside.)
Wired Controller
(Option,
Theoperatingconditionis
visiblebytheLCDindication.)
Indication Place
for Indoor Unit Model
● Itisindicatedinthespecication
plateattachedatthefancasing.
(Checkitbyopeningtheairinlet
grille.)
NOTE
● Presslightlytheswitchestocontrolthewiredcontroller.
● Donotpressthewiredcontrollerbysharpobjectssuchaspen.
Itmaycausebreakageofcontrolpart.
● Tocontroltheindoorunitbytheoptionalwirelesscontroller,thedetailshallbereferredtotheinstallation
manualofitself.
WARNING Label
A10762290A 7
3. Name of Parts and Indication of Safety Consideration
Thesafetyconsiderationsareindicatedontheindoorunitinordertobeusedsafety.
Readandunderstandthismanualbeforeusingtheindoorunit.
3.1 IndoorUnit

8 A10762290A
3.2 WiredController
 Model:PC-ARF1(Optional)
Display Part
LOUV. Adj.
A/C
COOL
Meeting Room
MODE SPEED LOUV. TEMP
FLTR
OK
Motion Sensor ON
Menu
Back/Help ECO
On/Off
Avoid
Filter Sign Indicator
FLTR
Itisindicatedatthesetperiodfor
ltercleaning.
Operation Lock Indicator
Itisindicatedwhentheoperation
lockfunctionisset.(*)
Schedule Timer Indicator
Itisindicatedwhentheschedule
timerfunctionisset.(*)
Directional Key Enter Key
On/O󰀨 Switch
Run Indicator
Itlightswhiletheunitis
operated,anditashes
inabnormalconditions.
Operation Mode
Indicator
Theindicationsof
“HEAT”and“AUTO”are
indicatedonlyforthe
heatpumptypemodels.
Operation Guide
Indicator
“CentralControl”is
indicatedwhilethe
controlleroperationis
prohibited.
Operation Part
ECO Switch (*)
Back/Help Switch
Toreturntotheprevious
screen.
Menu Switch (*)
TodisplayMenu.
Fan Speed Indicator
Room Name
Indicator (*)
Theexamplebelowreferencesthecontrolpanelandall
adjustablesettings.Thewiredcontrollerdisplaymaybe
di󰀨erentduringactualoperation.
Motion Sensor
Indicator
Itisindicatedonlyforthe
lowercoverwithmotion
sensor.
Cold Draft Rest
Indicator
Setting Temperature
Indicator
Swing Louver Indicator
Avoid Air and Receive
Indicator
Itisonlyforthelowercover
withmotionsensor.(*)
NOTE
● ThismanualshowsexamplePC-ARF1isutilized.Ifothermodelsofthecontrollerareutilized,operatethe
unitaccordingtothemanualforthatcontroller.
● Presstheswitcheslightlytocontrolthewiredcontroller.Donotpressthewiredcontrollerwithasharp
objectsuchasapen.Itmaycausedamagetothecontrolpart.
● (*):Fordetailsdescription,refertotheoperationmanualforthewiredcontroller.

Connecting Rod
Louver
Vertical Deflector
1 Set
●AdjustingVerticalDeector
Theverticaldeectorswhichconsist3setsof
deectorareconnectedbytheconnectingrod.
Adjusttheverticaldeectorsbyhandtothe
requireddirection.Toadjustthem,stopswinging
thelouverduringtheoperation.
●SwingLouverDirectionduringHeatingOperation
●AutomaticSettingofLouver
 Theswinglouverisstoppedandmovedby
controllingthewiredcontroller.
When“Stop”switchispressedfromthewired
controller,theswinglouverwillbeclosed
automaticallyandtheoperationisstopped.
●When“RUN”switchispressedfromthewired
controller,theswinglouverwillbeopened
automatically.Atthistime,forcooling,dryand
fanoperation,theindoorunitisoperatedwith
thesettemperatureafterthefanspeed“SLOW”
operationisperformedforapproximately20
seconds.
Duringtheheatingoperation,themovementis
sameas“HotStartduringHeatingOperation”.
(Refertotheitem11.)
Horizontal
* Whentheheatingoperationstarts
* Whenthedefrostoperationstarts
* Whenthermo-controlleractivates
 Thelouverangleisxedhorizontally.
 Whenthedischargetemperatureis
higherthan30oC,thelouverangleis
automaticallyreturnedtothesetting
condition.
CAUTION
Do not move the louver by hand. If moved, the
louver mechanism will be damaged and the air
ow direction may not be set.
Louver
Do not move
the louver by hand.
6. Operation
RefertotheoperationmanualofPC-ARF1.
7. Operation Lock
RefertotheoperationmanualofPC-ARF1.
8. Menu Operation
RefertotheoperationmanualofPC-ARF1.
A10762290A 9
4. Operation Method
RefertotheoperationmanualofPC-ARF1.
5. Setting Method
RefertotheoperationmanualofPC-ARF1.

10 A10762290A
9. Motion Sensor
Thissettingisavailableonlyforthemotionsensor
kit.
9.2 DetailsforMotionSensorControl
Themotionsensorcontroladjustsautomatically
thefollowingitemsdependingonasituation.
* SettingTemperature:
Thetemperatureisadjusted1oCor2oCfor
savingcapacity.
* AirFlowVolume:
Theairowvolumeisadjustedtolowerone
volumeorto“Slow”(exceptduringthedry
operation).
* AirFlowDirection:
Theairowdirectionisadjustedtohorizontal.
9.1 Function
● Themotionsensordetectsahumanactivityby
thechangeoftheinfraredlight.
Thisfunctionsavestheairconditioningcapacity
(adjustingthesettemperature,theairow
volumeandtheairowdirection)automatically
dependingonasituation.
● Theoperationafterthemotionsensordetectsas
absencecanbeselectedfrom“ON”,“Stand-by”
or“OFF”onthewiredcontrollerwiththecapacity
saving.
● Donotusethemotionsensorfunctionwhena
babyorahandicappedpersonstaysbyoneself.
Themotionsensormaydetectasabsenceand
theoperationmaybestoppedinthecaseof
stayingforlongtimewithabitmotion.
● Themotionsensordetectsthehumanactivity.
However,ifsomeoneisinaroomwithabit
motion,themotionsensormaydetectas
absence.
● Themotionsensormaydetectashuman
activityiftheindoorunitwiththemotionsensor
isinstallednearamovingobject(ex.swing
operationofaheatingappliance)whichis
di󰀨erenceintemperatureagainstatmosphere.
● Inthecasethattheindoorunitsareoperatedby
2wiredcontrollers,themotionsensorsettingis
availableonlyfromthemainwiredcontroller.
● Theindoorunitoperationcanbestoppedbythe
motionsensorcontrol.
NOTE:
Theindoorunitwithoutthemotionsensorand
theindoorunitwiththemotionsensorcanbe
mixedtoinstall.
Inthiscase,whentheoperationisstoppedby
themotionsensorcontrol,theindoorunitwithout
themotionsensorwillalsostoptheoperation.
● Whiletheairconditioningcapacityissavedor
theoperationisstoppedbythemotionsensor
control,“Motionsensorisactivated”isdisplayed
onLCD.
● Ifthefunction“Prohibitingoperationbywired
controller”isusedfromthecentralizedcontroller,
selectthecommand“ON”or“Stand-by”in“If
absent”atthemotionsensorcontrolsetting.
 If“OFF”isselected,themotionsensorcontrol
cannotbeperformedcorrectlyasfollows.
* Inthecasethat“OFF”isselectedinthe
motionsensorcontrolsettingand“Prohibiting
operationbywiredcontroller”(forallitems)is
setbythecentralizedcontroller,theoperation
willnotbestoppedevenifthemotionsensor
controlfunctionchangestothestoppage
condition.
* Inthecasethat“OFF”isselectedinthe
motionsensorcontrolsettingand“Prohibiting
operationbywiredcontroller”(forpartof
items)issetbythecentralizedcontroller,the
indoorunitoperationcannotberestarted
fromthecentralizedcontrolleralthoughthe
operationcanbestoppedunderthestoppage
conditionbythemotionsensorcontrol
function.

A10762290A 11
9.3 DescriptionsforSettingItems
● MotionSensorSetting
Theoperationmodeforactivationsforfunction
canbeselectedasfollows:
* ALLMODES:
Functionisavailablewhentheoperationmode
is“COOL”,“DRY”,“HEAT”or“FAN”.
* COOL+DRY:
Functionisavailablewhentheoperationmode
is“COOL”,“DRY”or“FAN”.
* HEAT:
Functionisavailablewhentheoperationmode
is“HEAT”.
* OFF:
Functionsisnotavailable.
(Thedefaultsettingis“ALLMODES”.)
● Ifabsent
“Ifabsent”issetfortheindoorunitoperation
afterthemotionsensordetectsasabsencefor
settimein“Checkinterval”.Theoperationcan
beselectedfrom“ON”,“Stand-by”or“OFF”on
thewiredcontroller.
(Thedefaultsettingis“ON”.)
* ON:
Theoperationiscontinuedwithsavingthe
capacityafterdetectedasanabsence.
Ifthehumanactivityisdetectedforaperiodof
time,thenormaloperationwillbeperformed
again.
* Stand-by:
Theoperationmodeisthefanoperationat
“Slow”speed.Ifthehumanactivityisdetected
foraperiodoftime,thenormaloperationwill
beperformedagain.
* OFF:
Theoperationisstoppedbythewired
controllerwhenalltheindoorunitswithmotion
sensordetectabsencewhichareconnected
withsamewiredcontroller.
Ifthehumanactivityisdetectedforaperiodof
timebythestoppage,thenormaloperationis
performedagain.
● CheckInterval
Whenthemotionsensordetectsanabsence
atselectedcheckintervaltime,thefunction“If
absent”willbeexecuted.Theintervalcanbe
selectedfrom30,60,90120or180minutes.
(Thedefaultsettingis30minutes.)
(1) Press“Menu”.
Select“MotionSensorSetting”fromthe
menubypressing“ ”or“ ”andpress“OK”.
(2) “MotionSensorSetting”isdisplayed.
Thehighlighteditemisshiftedto“Sensor”,
“Ifabsent”and“Checkinterval”bypressing
“”or“ ”.
(3) Press“ ”or“ ”andselect“Sensor”.
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
(4) Thedisplayisswitched“ALLMODES”,
“COOL+DRY”,“HEAT”and“OFF”inorderby
pressing“ ”or“ ”andchangethesetting.
Ifothersettingsarenotrequired,moveto
procedure(9).
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
9.4 SettingofMotionSensor
• Toset“Sensor”,movetoprocedure(3).
• Toset“Ifabsent”,movetoprocedure(5).
• Toset“Checkinterval”,movetoprocedure(7).
OK
Menu
Back/Hel
p
OK
Menu
Back/Hel
p
Menu
Motion Sensor Setting
Total Heat Exchanger SET
VENTI
Louver Open/Close 03
/
05
Individual Louver Setting
15:10(Fri)
Entr RtrnSel. OK Back
OK
Menu
Back/Hel
p
OK
Menu
Back/Hel
p
OK
Menu
Back/Hel
p
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back

12 A10762290A
9.5 FrostWash
RefertothemanualforPC-ARFG.
9.6 PreventExcessiveCooling
RefertothemanualforPC-ARFG.
9.7 AirowOptimizationinHeatingMode
RefertothemanualforPC-ARFG.
(5) Press“ ”or“ ”andselect“Ifabsent”.
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
OK
Menu
Back/Hel
p
(6) Thedisplayisswitched“ON”,“Stand-by”and
“OFF”inorderbypressing“ ”or“ ”and
changethesetting.
Ifothersettingsarenotrequired,moveto
procedure(9).
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
OK
Menu
Back/Hel
p
(7) Press“ ”or“ ”andselect“Checkinterval”.
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
OK
Menu
Back/Hel
p
(8) Thedisplayisswitched“30min”,“60min”,
“90min”,“120min”and“180min”inorderby
pressing“ ”or“ ”andchangethesetting.
Ifothersettingsarenotrequired,moveto
procedure(9).
Motion Sensor Setting
Sensor ALL MODES
If absent ON
Check interval
30min
Entr RtrnSel. Adj. OK Back
OK
Menu
Back/Hel
p
(9) Press“OK”afterthesettingiscompleted.
Theconrmationscreenwillbedisplayed.
Select“Yes”bypressing“ ”or“ ”and
press“OK”.Themotionsensorsettingwill
beconrmedandthescreenwillreturntothe
normalmode(operationmodeindication).
A/C
20.0
Motion Sensor ON
SPEED
MODE SPEED
HEAT
TEMP
Meeting Room
Adj.
LOUV.
OK Back
Save changes in
motion sensor setting?
Motion Sensor Setting
YesNo
Sel. Entr Rtrn
OK
Menu
Back/Hel
p
OK
Menu
Back/Hel
p
OK
Menu
Back/Hel
p

A10762290A 13
10. Other Indications
10.1 InNormalCondition
A/C
20.0
Motion Sensor ON
SPEED
MODE SPEED
HEAT
TEMP
Meeting Room
Adj.
LOUV.
Turned ON
10.1.2 MotionSensorControl
“MotionsensorON”isturnedONduringthe
motionsensorcontrol.
Inthiscase,theoperationisperformedwith
savingthecapacityorstoppedbythemotion
sensorcontrol.
10.1.3 Defrost
"Defrost"isturnedONandtheindoorfanstops
duringdefrostingoperation.Thelouverisxedin
ahorizontalposition.
•OperationStoppageduringDefrostingOperation
Iftheunitoperationisstoppedduringdefrosting
operation,theoperationcontinueswiththeRUN
indicator(Green)turnedOFF.Theoperation
stopsafterdefrostingoperation.
Turned ON
10.1.4 OperationControl
•SupplyingMainElectricalPower
“Preheating”isturnedONatpower-on.
Inthiscase,thecompressorisunderpreheating.
DonotturnOFFthepowersupplyoftheoutdoor
unitduringthehighseasonforCooling/Heating
operation.Otherwise,theoperationmightnotbe
availableforMax.4hours.
•DuringHotStart(forHeatingOperationOnly)
“HOT-START”isturnedON.
Turned ON
Turned ON
10.1.1 CentralControl
• Whenremotecontroloperationisrestricted
(allfunctions)
 “CentralControl”and“ ”areturnedON.
Iftheremotecontrolrestrictionissetfrom
thecentralcontroller,thesettingsforRUN,
OperationMode,TemperatureSetting,
FanSpeedandLouverwillnotbeaccessible
fromthecontroller.
• Whenremotecontroloperationisrestricted
(somefunctions)
“ ”isturnedON.
Thefunctionoperationwhichisrestrictedfrom
thecentralcontrollercannotbeset.
Turned ON
Turned ON

14 A10762290A
● The“ControlCoolAir”functionmaynothave
muche󰀨ectdependingontheoperating
conditionsoftheoutdoorunit.
● Incaseoneoutdoorunitisconnectedtomultiple
indoorunitsandtherateoftheseindoorunits
whichareequippedwiththe“ControlCoolAir”
functionislow,thisfunctionmaynothavemuch
ofane󰀨ect.
● Whenthisfunctionisset,itmaytakeafew
minutestocooltheentireroom.
● Whilethisfunctionisactivated,“Colddraftrest.”
isdisplayedontheLCDcontrolpanelofthe
wiredcontroller.
10.1.6 AutomaticHeating/CoolingOperation
Incasedualsetpointisselectedinautomatic
heating/coolingoperation,duringautomodeboth
coolingsetpointandheatingsetpointcanbe
selected.
Bydefault,temperaturewhentheheating/cooling
modechangesareasfollows.
Coolingmodechangestoheatingmodewhenthe
indoortemperatureisheatingsetpoint-1oC.
Heatingmodechangestocoolingmodewhenthe
indoortemperatureiscoolingsetpoint+1oC.
Ifthetemperatureforchangingmodesrequires
tobechanged,refertothe“Installation&
MaintenanceManual”forthewiredcontrollerand
the“ServiceManual”fordetails.
Anautomaticheating/coolingoperationrequires
extrasettings.
Refertothe“Installation&MaintenanceManual”
forthewiredcontrollerandthe“ServiceManual”
fordetails.
A/C
MODE SPEED TEMP
AUTO
Meeting Room
LOUV.
Avoid
HEAT TEMP Adj.LOUV.
28 .5 26 .5
COOL HEAT
A/C
MODE SPEED TEMP
AUTO
LOUV. Adj.
Meeting Room
LOUV.
Cold draft rest.
Avoid
28.0
•Di󰀨erentOperationMode
Whentheoperationmodesetbythewired
controllerisdi󰀨erentfromtheoutdoorunit
operationmode,theactualoperationmode
ashesontheLCD.
(exceptfortheheatrecoverysystemmodels)
Theabovedisplayshowsthecasethat
thecoolingmodeissetfromthewired
controllerwhileactualoperationmode
oftheoutdoorunitisheating.
Flashing
Thecurrentoperationmodeandthemessage
“OtherremoteareinHEATsetting”willbe
ashing.
10.1.5 ColdDraftControlduringCoolingOperation
(1) Function
Thisfunctioncontrolstheovercoolingairow
topreventofcolddraft.
(2) SettingItems
*OFF :Thisfunctionisnotavailable.
*LOW:
Theover-coolingairow
 temperatureiscontrolledlowdegree.
*MID :Theover-coolingairow
 temperatureiscontrolledmedium
 degree.
*HIGH:Theover-coolingairow
 temperatureiscontrolledhigh
 degree.
(Thedefaultsettingis“OFF”)
(3) SupplementofFunction
•Thedischargeairtemperatureiselevated
higherin“HIGH”>“MID”>“LOW”order.
•Therecommendeddischargeair
temperaturesettingis“LOW”.
(Whenfeelingcoldat“LOW”,changethe
settingto“MID”or“HIGH”.)
*Thisfunctionalsoreducestheformationof
dewcondensationontheindoorunitwhen
thedischargeairtemperatureislowerthan
theinletairtemperatureinaveryhumid
room.
(Therecommendeddischargeair
temperaturesettingis“LOW”.)