Mitsubishi Electric MSZ-GS25VFD User manual

SPLIT-TYPE AIR CONDITIONERS
English
OPERATING INSTRUCTIONS For user
• To use this unit correctly and safely, be sure to read these operating
instructions before use.
MSZ-GS25VFD MSZ-GS35VFD MSZ-GS50VFD
MSZ-GS60VFD MSZ-GS71VFD MSZ-GS80VFD
INDOOR UNIT
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● OPERATING INSTRUCTIONS ●
CONTENTS
SAFETY PRECAUTIONS
nSAFETY PRECAUTIONS 1
nNAME OF EACH PART 3
nPREPARATION BEFORE OPERATION 4
nSELECTING OPERATION MODES 5
nFAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT 6
nECONO COOL OPERATION 6
nTIMER OPERATION (ON/OFF TIMER) 6
nDEMAND RESPONSE AND INDOOR UNIT OPERATION 7
nEMERGENCY OPERATION 7
nAUTO RESTART FUNCTION 7
nCLEANING 8
nWHEN YOU THINK THAT TROUBLE HAS OCCURRED 9
nWHEN THEAIR CONDITIONER IS NOT GOING TO BE USED FORALONG TIME 10
nINSTALLATION PLACE AND ELECTRICAL WORK 10
nSPECIFICATIONS 10
WARNING
Do not connect the power cord to an intermediate point, use an
extensioncord,orconnectmultipledevicestoasingleACoutlet.
• Thismaycauseoverheating,re,orelectricshock.
Make sure the power plug is free of dirt and insert it securely
into the outlet.
• Adirtyplugmaycausereorelectricshock.
Do not bundle, pull, damage, or modify the power cord, and do
not apply heat or place heavy objects on it.
• Thismaycausereorelectricshock.
Do not turnthebreakerOFF/ONordisconnect/connectthepower
plug during operation.
• Thismaycreatesparks,whichcancausere.
• AftertheindoorunitisswitchedOFFwiththeremotecontroller,
makesuretoturnthebreakerOFFordisconnectthepowerplug.
• Sincerotatingpartsandpartswhichcouldcauseanelectricshockareused
inthisproduct,besuretoreadthese“SafetyPrecautions”beforeuse.
• Sincethecautionaryitemsshownhereareimportantforsafety,besureto
observethem.
• Afterreadingthismanual,keepittogetherwiththeinstallationmanualina
handyplaceforeasyreference.
• Besure toreceive aguarantee cardfrom yourdealer andcheck thatthe
purchaseddateandshopname,etc.areenteredcorrectly.
Marks and their meanings
WARNING : Incorrect handling could cause serious hazard, such as
death,seriousinjury,etc.withahighprobability.
CAUTION : Incorrecthandlingcouldcauseserioushazarddepending
ontheconditions.
Meanings of symbols used in this manual
: Besurenottodo.
: Besuretofollowtheinstruction.
: Neverinsertyourngerorstick,etc.
: Neverstepontotheindoor/outdoorunitanddonotputanythingonthem.
: Dangerofelectricshock.Becareful.
: Besuretodisconnectthepowersupplyplugfromthepoweroutlet.
: Besuretoshutoffthepower.
: Riskofre.
Meanings of symbols displayed on indoor unit and/or outdoor unit
WARNING
(Riskofre)
Thisunitusesaammablerefrigerant.
Ifrefrigerantleaksandcomesincontactwithreorheatingpart,itwillcreateharmfulgasandthereisriskofre.
ReadtheOPERATINGINSTRUCTIONScarefullybeforeoperation.
ServicepersonnelarerequiredtocarefullyreadtheOPERATINGINSTRUCTIONSandINSTALLATIONMANUALbeforeoperation.
FurtherinformationisavailableintheOPERATINGINSTRUCTIONS,INSTALLATIONMANUAL,andthelike.
Do not expose your body directly to cool air for a prolonged
length of time.
• Thiscouldbedetrimentaltoyourhealth.
The unit should not be installed, relocated, disassembled,
altered, or repaired by the user.
• An improperly handled air conditioner may cause re, electric
shock,injury,orwaterleakage,etc.Consultyourdealer.
• Ifthepowersupplycordisdamaged,itmustbereplacedbythe
manufactureroritsserviceagentinordertoavoidahazard.
When installing, relocating, or servicing the unit, make sure that
no substance other than the specied refrigerant (R32) enters
the refrigerant circuit.
• Anypresenceofforeignsubstancesuchasaircancauseabnormal
pressureriseandmayresultinexplosionorinjury.
•
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwill
causemechanicalfailure,systemmalfunction,orunitbreakdown.In
theworstcase,thiscouldleadtoaseriousimpedimenttosecuring
productsafety.
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SAFETY PRECAUTIONS
WARNING
Consult your dealer for installing the air conditioner.
• It should not be installed by the user since installation requires
specializedknowledgeandskills.Animproperlyinstalledaircon-
ditionermaycausewaterleakage,re,orelectricshock.
Provide a dedicated power supply for the air conditioner.
• Anon-dedicatedpowersupplymaycauseoverheatingorre.
Do not install the unit where ammable gas could leak.
• Ifgasleaksandaccumulatesaroundtheoutdoorunit,itmaycause
anexplosion.
Earth the unit correctly.
• Donotconnecttheearthwiretoagaspipe,waterpipe,lightning
rod,oratelephoneearthwire.Improperearthingmaycauseelectric
shock.
CAUTION
Install an earth leakage breaker depending on the installation
location of the air conditioner (such as highly humid areas).
• Ifanearthleakagebreakerisnotinstalled,itmaycauseelectric
shock.
Ensure that the drain water is properly drained.
• Ifthedrain passageisimproper, watermaydripdown fromthe
indoor/outdoorunit,wettinganddamagingthefurniture.
In case of an abnormal condition
 Immediatelystopoperatingtheairconditionerandconsultyourdealer.
For installation
This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance
by a person responsible for their safety.
Children should be supervised to ensure that they do not play
with the appliance.
Do not insert your nger, a stick, or other objects into the air
inlet or outlet.
• This may cause injury, since the fan inside rotates at high speeds
duringoperation.
In case of an abnormal condition (such as a burning smell),
stop the air conditioner and disconnect the power plug or turn
the breaker OFF.
• Acontinuedoperationintheabnormalstatemaycauseamalfunc-
tion,re,orelectricshock.Inthiscase,consultyourdealer.
When the air conditioner does not cool or heat, there is a pos-
sibility of refrigerant leakage. If any refrigerant leakage is found,
stop operations and ventilate the room well and consult your
dealer immediately. If a repair involves recharging the unit with
refrigerant, ask the service technician for details.
• Therefrigerantusedintheairconditionerisnotharmful.Normally,
itdoesnotleak.However,ifrefrigerantleaksandcomesincontact
withreorheatingpartofsuchafanheater,keroseneheater,or
cookingstove,itwillcreateharmfulgasandthereisriskofre.
The user should never attempt to wash the inside of the indoor
unit. Should the inside of the unit require cleaning, contact
your dealer.
• Unsuitabledetergentmaycausedamagetoplasticmaterialinside
the unit, which may result in water leakage. Should detergent
comeincontactwithelectricalpartsorthemotor,itwillresultin
amalfunction,smoke,orre.
• The appliance shall be stored in a room without continuously
operatingignitionsources(forexample:openames,anoperating
gasapplianceoranoperatingelectricheater).
• Beawarethatrefrigerantsmaynotcontainanodour.
• Donotusemeanstoacceleratethedefrostingprocessortoclean
theappliance,otherthanthoserecommendedbythemanufac-
turer.
• Donotpierceorburn.
The indoor unit must be installed in rooms which exceed the
oor space specied. Please consult your dealer.
This appliance is intended to be used by expert or trained users
in shops, in light industry and on farms, or for commercial use
by lay persons. CAUTION
Do not touch the air inlet or the aluminum ns of the indoor/
outdoor unit.
• Thismaycauseinjury.
Do not use insecticides or ammable sprays on the unit.
• Thismaycauseareordeformationoftheunit.
Do not expose pets or houseplants to direct airow.
• Thismaycauseinjurytothepetsorplants.
Do not place other electric appliances or furniture under the
indoor/outdoor unit.
• Watermaydripdownfromtheunit,whichmaycausedamageor
malfunction.
Do not leave the unit on a damaged installation stand.
• Theunitmayfallandcauseinjury.
Do not step on an unstable bench to operate or clean the unit.
• Thismaycauseinjuryifyoufalldown.
Do not pull the power cord.
• Thismaycauseaportionofthecorewiretobreak,whichmay
causeoverheatingorre.
Do not charge or disassemble the batteries, and do not throw
them into a re.
•
Thismaycausethebatteriestoleak,orcauseareorexplosion.
Do not operate the unit for more than 4 hours at high humidity
(80% RH or more) and/or with windows or outside door left open.
• This may cause the water condensation in the air conditioner,
whichmaydripdown,wettingordamagingthefurniture.
• Thewatercondensationintheairconditionermaycontributeto
growthoffungi,suchasmold.
Do not use the unit for special purposes, such as storing food,
raising animals, growing plants, or preserving precision devices
or art objects.
• Thismaycausedeteriorationofquality,orharmtoanimalsand
plants.
Do not expose combustion appliances to direct airow.
• Thismaycauseincompletecombustion.
Never put batteries in your mouth for any reason to avoid ac-
cidental ingestion.
• Batteryingestionmaycausechokingand/orpoisoning.
Before cleaning the unit, switch it OFF and disconnect the power
plug or turn the breaker OFF.
• This may cause injury, since the fan inside rotates at high speeds
duringoperation.
When the unit will be unused for a long time, disconnect the
power plug or turn the breaker OFF.
• Theunitmayaccumulatedirt,whichmaycauseoverheatingor
re.
Replace all batteries of the remote controller with new ones of
the same type.
• Usinganoldbatterytogetherwithanewonemaycauseoverheat-
ing,leakage,orexplosion.
If the battery uid comes in contact with your skin or clothes,
wash them thoroughly with clean water.
•
If the battery uid comes in contact with your eyes, wash them
thoroughlywithcleanwaterandimmediatelyseekmedicalattention.
Ensure that the area is well-ventilated when the unit is operated
together with a combustion appliance.
• Inadequateventilationmaycauseoxygenstarvation.
Turn the breaker OFF when you hear thunder and there is a
possibility of a lightning strike.
• Theunitmaybedamagediflightningstrikes.
After the air conditioner is used for several seasons, perform
inspection and maintenance in addition to normal cleaning.
• Dirtordustintheunitmaycreateanunpleasantodor,contribute
togrowthoffungi,suchasmold,orclogthedrainpassage,and
causewatertoleakfromtheindoorunit.Consultyourdealerfor
inspectionandmaintenance,whichrequirespecializedknowledge
andskills.
Do not operate switches with wet hands.
• Thismaycauseelectricshock.
Do not clean the air conditioner with water or place an object
that contains water, such as a ower vase, on it.
• Thismaycausereorelectricshock.
Do not step on or place any object on the outdoor unit.
• Thismaycauseinjuryifyouortheobjectfallsdown.
IMPORTANT
Dirty lters cause condensation in the air conditioner which will contribute
to the growth of fungi such as mold. It is therefore recommended to clean air
lters every 2 weeks.
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● OPERATING INSTRUCTIONS ●
Operationindicatorlamp
Remotecontrolreceivingsection
Emergency
operationswitch Page 7
Airinlet(backandside)
Refrigerant piping
Drainage hose
Airoutlet
Drainoutlet
Horizontalvane Verticalvane
Airoutlet
Fan
Airlter
Airinlet
Heatexchanger
Frontpanel
Outdoor unit
NAME OF EACH PART
Indoor unit
<GS71/80>
<GS25/35/50/60>
Remote controller
Outdoorunitsmaybedifferentinappearance.
Aircleaninglter
(Anti-allergyenzyme
lter,option)
Remote controller holder
• Installtheremote
controllerholderina
placewherethesignal
canbereceivedbythe
indoorunit.
Onlyusetheremotecontrollerprovided
withtheunit.
Donotuseotherremotecontrollers.
Iftwoormoreindoorunitsareinstalled
inproximitytooneanother,anindoor
unitthatisnotintendedtobeoperated
mayrespondtotheremotecontroller.
Fan guard
Operation indicator lamp
Remote control
receiving section
Emergency operation switch
Horizontalvane
Verticalvane
Airoutlet Fan
Fan guard
Airlter
Airinlet
Heat
exchanger
Frontpanel
Display section
Emergency
operationswitch Page 7
Signaltransmittingsection
Distanceofsignal:
About6m
Beep(s) is (are) heard
from the indoor unit
whenthesignalis
received.
Operation dis-
playsection
OFF/ON
(stop/operate)
button
Temperature
buttons
Page 5
Operation
selectbutton
Page 5
ECONO COOL
button Page 6
FAN speed
controlbutton
Page 6
VANEcontrol
button Page 6
TIMEsetbutton
Page 6
RESETbutton
Page 4
TIMER mode
selectbutton
Page 6
Aircleaninglter
(Anti-AllergyEnzyme
Filter,option)
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Before operation: Insertthe powersupply pluginto thepower outletand/or
turnthebreakeron.
Installing the remote controller batteries
PREPARATION BEFORE OPERATION
Note:
• Makesurethepolarityofthebatteriesiscorrect.
• Donotusemanganesebatteriesandleakingbatteries.Theremotecontroller
couldmalfunction.
• Donotuserechargeablebatteries.
• Replaceallbatterieswithnewonesofthesametype.
• Batteriescanbeusedforapproximately1year.However,batterieswithex-
piredshelfliveslastshorter.
• PressRESETgentlyusingathininstrument.
 IftheRESETbuttonisnotpressed,theremote controllermaynotoperate
correctly.
2. Insert the negative
poleofAAA
alkalinebatteriesrst.
1. Removethebacklid.
3. Installthebacklid.
4. PressRESET.
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● OPERATING INSTRUCTIONS ●
SELECTING OPERATION MODES
Note:
Operation indicator lamp
Theoperationindicatorlampshowstheoperationstateoftheunit.
Indication Operation state Room temperature
Theunit isoperating toreach theset
temperature
About2°C or more
awayfromsettem-
perature
The room temperature is approach-
ing the set temperature About1to2°Cfrom set temperature
Demand Response mode Page 7 —
Lit  Blinking  Notlit
Enjoycoolairatyourdesiredtemperature.
Note:
DonotoperateCOOLmodeatverylowoutsidetemperatures(lessthan
-10°C).Watercondensedintheunitmay dripandwetordamagefurni-
ture,etc.
COOL mode
DRY mode
HEAT mode
FAN mode
Dehumidifyyourroom.Theroommaybecooledslightly.
TemperaturecannotbesetduringDRYmode.
Enjoywarmairatyourdesiredtemperature.
Circulatetheairinyourroom.
Note:
After COOL/DRY mode operation, it is recommended to operate in the
FANmodetodryinsidetheindoorunit.
1Press tostarttheoperation.
2Press toselectoperationmode.Eachpress
changesmodeinthefollowingorder:
3Press or tosetthetemperature.
Eachpressraisesorlowersthetemperatureby1°C.
Press tostoptheoperation.
(COOL) (DRY) (HEAT) (FAN)
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FAN SPEED AND AIRFLOW
DIRECTION ADJUSTMENT
Press toselectfanspeed.Eachpresschanges
fanspeedinthefollowingorder:
•TwoshortbeepsareheardfromtheindoorunitwhensettoAUTO.
•Usehigherfanspeedtocool/heattheroommorepowerfully.Itisrec-
ommendedtolowerthefanspeedoncetheroomiscool/warm.
•Uselowerfanspeedforquietoperation.
Fan speed
Up-down Airflow direction
Press toselectairowdirection.Eachpress
changesairowdirectioninthefollowingorder:
(AUTO).........Thevaneissettothemostefcientairowdirection.COOL/
DRY/FAN:horizontalposition.HEAT:downwardposition.
 (Manual).......For efficient air conditioning, select the upward position for
COOL/DRY, and the downward position for HEAT. If the
downwardpositionisselectedduringCOOL/DRY,thevane
automaticallymovestothehorizontalpositionafter0.5to1
hourtopreventanycondensationfromdripping.
 (Swing).........Thevanemovesupanddownintermittently.
• TwoshortbeepsareheardfromtheindoorunitwhensettoAUTO.
■To change the horizontal airow direction.
 Movetheverticalvanemanuallybeforestartingoperation.
Note:
Iftheverticalvanesareadjustedwhiletheunitisnotoperating,besuretoreturn
thehorizontalvanestotheoriginalclosedposition.
Left-right Airflow direction
ECONO COOL OPERATION
Swingairow(changeofairow)makesyoufeelcoolerthanstationaryairow.
Thesettemperatureandtheairowdirectionareautomaticallychangedbythe
microprocessor.Itispossibletoperformcoolingoperationwithkeepingcomfort.
Asaresultenergycanbesaved.
Press during COOL mode page 5 to start
ECONOCOOLoperation.
Theunitperformsswingoperationverticallyinvariouscycleaccording
tothetemperatureoftheunit.Settemperatureisset2°Chigherauto-
matically.
Press againtocancelECONOCOOLoperation.
• Pressing alsocancelsECONOCOOLoperation.
TIMER OPERATION (ON/OFF TIMER)
(AUTO) (Low) (Med.) (High) (SuperHigh)
(AUTO) (1) (2) (3) (4) (5) (SWING)
1Press duringoperationtosetthetimer.
Eachpresschangestimermodeinthefollowingorder:
2Press tosetthetimeoftimer.
Eachpressincreasesordecreasesthesettimeby1hour.
Press until“TIMERRELEASE”isselectedto
releasetimer.
Note:
• ONandOFFtimerscannotbeusedincombination.
• IfpowerfailureoccurswhileON/OFFtimerisset,see page 7 “Autorestart
function”.
(OFF TIMER) (ON TIMER)
TIMER
RELEASE
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● OPERATING INSTRUCTIONS ●
Demand response
ThisunithasdemandresponsecapabilitywhichiscompliantwithAS/NZS4755.3.1.
Toactivatethisfunction,youneedtomakeacontractwithremoteagentssuchaselectricsupplycompany,thenthisunitshouldbeconnectedtoDemandresponseenabling
devise(DRED).Forfurtherinformation,consultyourdealer.
Demandresponserepresentstheautomatedalterationofanelectricalproduct’snormalmodeofoperationinresponsetoaninitiatingsignaloriginatingfromordened
byaremoteagent.
Thisunitsupports3DemandResponseModes(DRMs).
DRM Description of operation in this mode Operation indicator lamp
Lighted  Notlighted
DRM 1 Compressor off Theairconditionerdoesnotperformcoolingorheatingopera-
tionduringthedemandresponseevent.
Upperlampislighted.
Lowerlampblinks.
2.5 sec 2.5 sec0.5 sec
2.5 sec
DRM2
Theairconditionercontinuestoperformcoolingorheating
operationduringthedemandresponseevent,buttheelec-
tricalenergyconsumedbytheairconditionerinahalfhour
period is not more than 50% of the total electrical energy
thatwouldbeconsumedifoperatingattheratedcapacityin
ahalfhourperiod.
DRM 3
Theairconditionercontinuestoperformcoolingorheating
operationduringthedemandresponseevent,buttheelec-
tricalenergyconsumedbytheairconditionerinahalfhour
period is not more than 75% of the total electrical energy
thatwouldbeconsumedifoperatingattheratedcapacityin
ahalfhourperiod.
Note:
 •DRMisautomaticallyactivatedorreleasedaccordingtothesignalsfromDRED.
  DRMcannotbeinvalidatedorchangedmanually.
 •YoumightfeelthisunitdoesnotsufcientlyperformcoolingorheatingoperationduringDRM.
 •OperationsettingscanbechangedasusualwiththeremotecontrollerduringDRM.
  However,youmightnotfeelcoolorwarmenoughasDRMisprioritized.
DEMAND RESPONSE AND INDOOR UNIT OPERATION
Operation indicator lamp
When the remote controller cannot be used...
Emergencyoperationcan be activated bypressing the emergency operation
switch(E.O.SW)ontheindoorunit.
EachtimetheE.O.SWispressed,theoperationchangesin
thefollowingorder:
Ifapowerfailureoccursorthemainpoweristurnedoffduringoperation,“Auto
restartfunction”automaticallystartsoperationinthesamemodeastheoneset
withtheremotecontrollerjustbeforetheshutoffofthemainpower.Whentimeris
set,timersettingiscancelledandtheunitstartsoperationwhenpowerisresumed.
If you do not want to use this function, please consult the service repre-
sentative because the setting of the unit needs to be changed.
Settemperature:24°C
Fan speed : Medium
Horizontalvane:Auto
Emergency COOL
Emergency HEAT
Stop
Note:
• The rst 30 minutes of operation is test run. Temperature
controldoesnotwork,andfanspeedissettoHigh.
• Intheemergencyheatingoperation,thefanspeedgradually
risestoblowoutwarmair.
EMERGENCY OPERATION AUTO RESTART FUNCTION
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1.Liftthefrontpaneluntila“click”isheard.
2.Holdthehingesandpulltoremoveasshownintheaboveillustration.
• Wipewithasoftdryclothorrinseitwithwater.
• Donotsoakitinwaterformorethantwohours.
• Dryitwellinshade.
3.Installthefrontpanelbyfollowingtheremovalprocedureinreverse.Close
thefrontpanelsecurelyandpressthepositionsindicatedbythearrows.
Air outlet and Fan (before cleaning, make sure that the fan is stopped)
CLEANING
5Installthehorizontalvanesby
followingtheremovalprocedure
inreverse.
• If the horizontal vanes are not installed
correctly,allLEDlampsblinkwhenpower
isturnedon.
Note:
Donotapplyexcessiveforcetothefanorfanguard.
Air cleaning lter
(Anti-Allergy Enzyme Filter, option)
Back side of air lter
Clean every 3 months:
• Removedirtbyavacuumcleaner.
• Putitbacktoitsoriginalposition,andinstallalltabsoftheairlter.
When dirt cannot be removed by vacuum cleaning:
• Soakthelteranditsframeinlukewarmwaterbeforerinsingit.
 (Dilutedmilddetergentscanbeusedwhendirtcannotberemoved.)
•
 Afterwashingwithwater,dryitwellinshade.Installalltabsoftheairlter.
Every year:
• Replaceitwithanewaircleaninglter
forbestperformance.
• PartsNumber
 GS25/35/50/60: MAC-408FT-E
GS71/80: MAC-2350FT-E
Important
• Clean the lters regularly for best performance and to
reduce power consumption.
• Dirty lters cause condensation in the air conditioner
which will contribute to the growth of fungi such as
mold. It is therefore recommended to clean air lters
every 2 weeks.
Air lter
• Clean every 2 weeks
• Removedirtbyavacuumcleaner,orrinsewithwater.
• Afterwashingwithwater,dryitwellinshade.
Pulltoremovefromthe
airlter
1Turnthehorizontalvanedown-
ward.Then,removethevaneas
shownin➀ and ➁.
Vane
Unlock
Turnthehorizontalvanesdown-
ward.Then,removetheupper
vaneasshownin➀ and ➁.
• Repeat ➀ and ➁ forthelowervane.
<GS25/35/50/60>
Upper vane
Unlock
2Swingoutthetwoverticalvanes
onebyone.
3Cleantheairoutletandfan.
• Wipewithasoftdrycloth.
4Puttheverticalvanesbacktotheir
originalpositionscorrectlyoneby
one,intotheirrespectiveguide.
• Pushthevanesuntiltheyclickintoplace.
Guide
Hinge
<GS71/80>
<GS71/80>
GS71/80 only
Front panel
<GS25/35/50/60>
Hole
Instructions:
• Switchoffthepowersupplyorturnoffthebreakerbeforecleaning.
• Becarefulnottotouchthemetalpartswithyourhands.
• Donotusebenzine,thinner,polishingpowder,orinsecticide.
• Useonlydilutedneutraldetergents.
• Donotuseascrubbingbrush,ahardsponge,orthelike.
• Donotsoakorrinsethehorizontalvane.
• Donotusewaterhotterthan50°C.
• Donotexposepartstodirectsunlight,heat,orretodry.
• Donotapplyexcessiveforceonthefanasitmaycausecracksorbreakage.
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● OPERATING INSTRUCTIONS ●
Even if these items are checked, when the unit does not recover from the
trouble, stop using the air conditioner and consult your dealer.
Symptom Explanation & Check points
Indoor Unit
Theunitcannotbeoperated. • Isthebreakerturnedon?
• Isthepowersupplyplugconnected?
• IstheONtimerset? Page 6
AllLEDlampsontheindoor
unitareblinking.
• Arethehorizontalvanesinstalledcorrectly?
Page 8
Thehorizontalvanedoesnot
move.
• Arethehorizontalvaneandtheverticalvane
installedcorrectly? Page 8
• Isthefanguarddeformed?
Theunitcannotbeoperatedfor
about3minuteswhenrestarted.
• This protects the unit according to instruc-
tionsfromthemicroprocessor.Pleasewait.
Mist is discharged from the air
outletoftheindoorunit.
• Thecoolairfromtheunitrapidlycoolsmois-
ture in the air inside the room, and it turns
intomist.
Theswingoperationofthe
HORIZONTALVANEis
suspendedforawhile,then
restarted.
• ThisisfortheswingoperationoftheHORI-
ZONTALVANEtobeperformednormally.
Theairowdirectionchanges
duringoperation.
Thedirectionofthehorizontal
vanecannotbeadjustedwith
theremotecontroller.
• When the unit is operated in COOL or DRY
mode, if the operation continues with air
blowingdownfor0.5to1hour,thedirection
oftheairowisautomaticallysettohorizon-
talpositiontopreventwaterfromcondensing
anddripping.
• Intheheatingoperation,iftheairowtem-
peratureistooloworwhendefrostingisbe-
ingdone,thehorizontalvaneisautomatically
settohorizontalposition.
Theoperationstopsforabout
10 minutes in the heating
operation.
• Outdoorunitisindefrost.
Since this is completed in max. 10 minutes,
pleasewait.(Whentheoutside temperatureis
toolowandhumidityistoohigh,frostisformed.)
Theunitstartsoperationby
itselfwhenthemainpoweris
turnedon,butisn’treceived
signfromtheremotecontrol-
ler.
• Thesemodelsareequippedwithanautore-
startfunction.Whenthemainpoweristurned
offwithoutstoppingtheunitwiththeremote
controller and is turned on again, the unit
startsoperationautomatically in the same
modeastheonesetwiththeremotecontrol-
lerjustbeforetheshutoffofthemainpower.
Referto“Autorestartfunction” Page 7 .
Theindoorunitdiscolorsover
time.
• Althoughplasticturnsyellowduetotheinu-
enceofsomefactorssuchasultravioletlight
and temperature, this has no effect on the
productfunctions.
Outdoor Unit
The fan of the outdoor unit
does not rotate even though
thecompressorisrunning.
Even if the fan starts to rotate,
itstopssoon.
• Whentheoutsidetemperatureislowduring
coolingoperation,thefanoperatesintermit-
tentlytomaintainsufcientcoolingcapacity.
Waterleaksfromtheoutdoor
unit. • During COOL and DRY operations, pipe or pipeconnectingsectionsarecooledandthis
causeswatertocondense.
• Intheheatingoperation,watercondensed
ontheheatexchangerdripsdown.
• In the heating operation, the defrosting
operationmakesiceformingontheoutdoor
unitmeltanddripdown.
Whitesmokeisdischarged
fromtheoutdoorunit. •
Intheheatingoperation,vapor generatedby
thedefrostingoperationlookslikewhitesmoke.
Remote controller
Thedisplayontheremote
controllerdoesnotappearor
itisdim.Theindoorunitdoes
not respond to the remote
controlsignal.
• Arethebatteriesexhausted? Page 4
• Isthepolarity(+,-)ofthebatteriescorrect?
Page 4
• Areanybuttonsontheremotecontrollerof
otherelectricappliancesbeingpressed?
Symptom Explanation & Check points
Does not cool or heat
Theroomcannotbecooled
orheatedsufciently. • Is the temperature setting appropriate?
Page 5
• Isthefansettingappropriate?Pleasechange
fanspeedtoHighorSuperHigh. Page 6
• Aretheltersclean? Page 8
• Isthefanorheatexchangeroftheindoorunit
clean? Page 8
• Arethereanyobstaclesblockingtheairinlet
oroutletoftheindoororoutdoorunit?
• Isawindowordooropen?
• Itmaytakeacertaintimetoreachthesetting
temperatureor maynot reach that depending
onthesizeoftheroom,theambienttempera-
ture,andthelike.
Theroomcannotbecooled
sufciently.
• When a ventilation fan or a gas cooker is
usedinaroom,thecoolingloadincreases,
resultinginaninsufcientcoolingeffect.
• When the outside temperature is high, the
coolingeffectmaynotbesufcient.
Theroomcannotbeheated
sufciently.
• When the outside temperature is low, the
heatingeffectmaynotbesufcient.
Airdoesnotblowoutsoonin
theheatingoperation.
• Pleasewaitastheunitispreparingtoblow
outwarmair.
Poorcoolingorheating
performance.
• Doyouhaveanarrangementwithyourelec-
triccompanyforDemandResponse?
Airow
The air from the indoor unit
smellsstrange.
• Aretheltersclean? Page 8
• Isthefanorheatexchangeroftheindoorunit
clean? Page 8
• Theunitmaysuckinanodoradheringtothe
wall,carpet,furniture,cloth,etc.andblowit
outwiththeair.
Sound
Crackingsoundisheard. • This soundisgenerated bytheexpansion/
contraction of the front panel, etc. due to
changeintemperature.
“Burbling”soundisheard. • Thissoundisheardwhentheoutsideairis
absorbedfromthedrainhosebyturningon
therangehoodortheventilationfan,making
waterowinginthedrainhosetospoutout.
 Thissoundisalsoheardwhentheoutsideair
blowsintothedrainhoseincasetheoutside
windisstrong.
Mechanicalsoundisheard
fromtheindoorunit.
• Thisistheswitchingsoundinturningoff/on
thefanorthecompressor.
Thesoundofwaterowing
isheard. • This is the sound of refrigerant or condensed waterowingintheunit.
Hissing sound is sometimes
heard.
• Thisisthesoundwhentheowofrefrigerant
insidetheunitischanged.
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
In the following cases, stop using the air conditioner and consult your dealer.
• Whenwaterleaksordripsfromtheindoorunit.
• Whentheupperoperationindicatorlampblinks.
• Whenthebreakertripsfrequently.
• TheremotecontrolsignalisnotreceivedinaroomwhereanelectronicON/
OFFtypeuorescentlamp(inverter-typeuorescentlamp,etc.)isused.
• OperationoftheairconditionerinterfereswithradioorTVreception.Anampli-
ermayberequiredfortheaffecteddevice.
• Whenanabnormalsoundisheard.
• Whenanyrefrigerantleakageisfound.
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Installation place
Avoid installing the air conditioner in the following places.
• Wherethereismuchmachineoil.
• Saltyplacessuchastheseaside.
• Wheresuldegasisgeneratedsuchashotspring,sewage,wastewater.
• Whereoilissplashedorwheretheareaislledwithoilysmoke(suchascook-
ingareasandfactories,inwhichthepropertiesofplasticcouldbechanged
anddamaged).
• Wherethereishigh-frequencyorwirelessequipment.
• Wheretheairfromtheoutdoorunitairoutletisblocked.
• Wheretheoperationsoundorairfromtheoutdoorunitbothersthehousenext
door.
• The mounting height of indoor unit 1.8m to 2.3m is recommended. If it is
impossible,pleaseconsultyourdealer.
• Donotoperatetheairconditionerduringinteriorconstructionandnishing
work,orwhilewaxingtheoor.Beforeoperatingtheairconditioner,ventilate
theroomwellaftersuchworkisperformed.Otherwise,itmaycausevolatile
elementstoadhereinsidetheairconditioner,resultinginwaterleakageor
scatteringofdew.
• Theindoorunitmustbeinstalledinroomswhichexceedtheoorspacespeci-
ed.Pleaseconsultyourdealer.
Electrical work
• Provideanexclusivecircuitforthepowersupplyoftheairconditioner.
• Besuretoobservethebreakercapacity.
If you have any questions, consult your dealer.
INSTALLATION PLACE AND
ELECTRICAL WORK
SPECIFICATIONS
To prevent the effects
ofauorescentlamp,
keepasfarapartas
possible.
wall,etc.
Inverter-type
uorescentlamp
Keep a space
to prevent the
picture distortion
orthenoise.
1 m
or more
Radio
100 mm or
more
(GS25,35,
50,60,71 / 80)
200/500mmor
more
Fortheoptimumefciency
andtoextendthelifetime
of using, the outdoor unit
shouldbeinstalledinwell-
ventilateddryplace.
TV
Cordless
phone or
Portable
phone
3 m or
more
1 m
or more
Theinstallationlocationoftheoutdoorunitshould
beatleast3mawayfromtheantennasforTVsets,
radios,etc.Inareaswherethereceptionisweak,
providegreaterspacebetweentheoutdoorunitand
the antenna of the affected device if operation of the air
conditionerinterfereswithradioorTVreception.
1OperatebyCOOLmodewiththehighesttemperature
set or FAN mode for 3 to 4 hours. Page 5
• Thisdriestheinsideoftheunit.
• Moistureintheairconditionercontributestogrowthoffungi,suchas
mold.
2Press tostoptheoperation.
3Turnoffthebreakerand/ordisconnectthepowersup-
plyplug.
4Removeallbatteriesfromtheremotecontroller.
When using the air conditioner again:
1Cleantheairlter. Page 8
2Checkthattheairinletandoutletoftheindoorand
outdoorunitsarenotblocked.
3Checkthattheearthisconnectedcorrectly.
4Refertothe“PREPARATIONBEFOREOPERATION”,
andfollowtheinstructions. Page 4
WHEN THE AIR CONDITIONER IS NOT
GOING TO BE USED FOR A LONG TIME
Indoor Outdoor
Cooling
Upperlimit 32°CDB
23°CWB
46°CDB
—
Lowerlimit 21°CDB
15°CWB
-10°CDB
—
Heating Upperlimit 27°CDB
—24°CDB 18°CWB
Lowerlimit 20°CDB
—-15°CDB -16°CWB
Guaranteed operating range
DB :DryBulb
WB:WetBulb
JG79Y822H02_en.indd 10 2021/03/25 8:58:17

JG79Y822H02
HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
JG79Y822H02_Cover(Helvetica_Neue_LT_Std).indd 2 2021/03/25 8:59:38