Hitachi RPC-6.0FSR - Contacting the Distributor

A10762290A
19
14. Troubleshooting
14.1 ThisisNotAbnormal
Phenomenon Cause and Action
Operation Stopped
Allindicationlampsonthe
wiredcontrollerareturned
OFF.
Themicro-computerisactivatedtoprotectthe
devicefromelectromagneticwaves.Restartthe
operation.
“MotionSensorON”isturned
ONonthewiredcontroller.
Theoperationisstoppedautomaticallybecause
themotionsensorissetas“Ifabsent:OFF”and
itdetectsasabsenceforaperiodoftime.(Allthe
indoorunitsconnectedtothesamewiredcontroller
arestopped.)
AfterPowerFailure
Restarttheoperation.Iftheinstantaneouspower
failureiswithin2seconds,theoperationrestarts
automatically.
White Steam
from Indoor Unit
DuringHeatingOperation
Thismightoccurduringthedefrostingoperationin
theheatingoperation.
White Smoke
from Indoor Unit
AtBeginningofHeating
OperationSeason
Thismightoccurwhendustattachedtotheheat
exchangerhasbeendried.
Mist from Indoor Unit
InRestaurantorKitchen
Thismightoccurwhenoilattachedtothensmight
decreasetheheatexchangee󰀩ciency.
DuringDryOperation
Thismightoccurwhentheairoutlettemperature
becomeslower.Changetheoperationmode.
DuringCoolingOperation
inHumidEnvironment
Thismightoccurwhentheairoutlettemperature
becomeslower.
Raisethesettemperatureandtheairowvolume.
DuringFrostWash
Thismightoccurwhenfrostisformedonthensof
theheatexchanger.
Odor from Indoor Unit
OdorDischargedAirfrom
IndoorUnit
Thismightoccurwhenthesmellofcigarettesmoke
orroomstucktotheinsideoftheindoorunit.
Ventilatetheunitwellinthefanmodeandcleanthe
airlter,theairoutletandtheairinletgrille.
Sound from Indoor Unit
Grateisheardwhenstarting
orstoppingtheoperation.
Thisisthesoundmadewhenthecomponentsare
rubbingagainsteachotherduetotheextension
andcontractionoftheresinpartscausedbythe
temperaturechange.
Soundofwaterowingor
burblingisheardduringthe
operation.
Thisisthesoundmadewhentherefrigerantows
orthedrain-upmechanismdrainswater.Thesound
maybeheardespeciallywhenstartingtheoperation
orstoppingthecompressor(forapprox.3minutes).
Growlingsoundmaybeheard
temporarilyrightaftertheair
owvolumeischanged.
Itisgeneratedbecausethefanmotormakes
temporarysoundbychangeoffanspeed.
Cracklingsoundorsound
offrostmeltingduring
FrostWash.
Thisisthesoundoftheheatexchangernsfreezing
andthawingandthesoundofresinpartsextension
andcontractionduetochangesintemperature.
Dew Condensation on
Indoor Unit
Dewcondensationon
AirInletGrilleorCabinetor
DewDrops
Thismightoccurwhentheoperationisperformedin
humidplace(relativehumidityisapprox.80%)fora
longtime.
Dewcondensationon
AirInletGrilleorCabinet
duringorafterFrostWash
Thismightoccurwhentheoperationisperformedin
humidplace(relativehumidityisapprox.80%)and
hightemperatureplace(higherthan30
o
C).
Temperature Irregularity
Theairowvolumeand
temperatureofeachairoutlet
areirregular.
Thismightoccurforstructuralreasons,suchasthe
sizeofairoutletandthelocationofheatexchanger.
“HOT-START” or “Preheating” on LCD Turned ON
Thismightoccuraccordingtotheoperationmode
oroperationconditions.
Operation Mode on LCD Flashing