
53
Inordertodiagnosemalfunctions,makesurethatthereareno
electricalproblemsbeforeinspectingtherefrigerationcycle.
Suchproblemsincludeinsufficientinsulation,problemwiththe
powersource,malfunctionofcompressororfan.
Thenormaloutletairtemperatureandpressureofthe
refrigerationcycledependsonvariousconditions,thestandard
valuesforthemareshowninthetabletotheright.
Normalpressureandoutletairtemperature(standard)
Coolingmode
Gassidepressure
Mpa
(kg/cmG)
2
0.6~0.96(6~9.6)12~16
Outletair
temperature
()
Condition:indoorfanspeed:high
outdoortemperature:
35(Coolingmode)
7(Heatingmode)
Differenceinthe
intakeandoutlet
airtemperature
Morethan8
(15minutesafteran
operationisstarted)atthecoolingmode
Normal
Measuringelectriccurrent
duringoperation
Measuringgasside
pressure
Lessthan14attheheatingmode.
Valueofelectric
current
duringoperation
Higherthan
specified
Dustyheatexchanger
preventingheatradiation
Excessiveamount
ofrefrigerant
Lowerthanspecified
Gassidepressure
Cooling
mode
High
Low
Low
Inefficientcompressor
Insufficientrefrigerant
cloggedstraineror
capillarytube
12.1.Refrigerationcyclesystem
12TroubleshootingGuide
Measuringtheair
temperaturedifference
Heatingmode
2.25~3.36(22.5~33.6)
36~45
Morethan14
(15minutesafteran
operationisstarted)
attheheatingmode
Lessthan8atthecoolingmode.
Inefficientcompressor
Insufficientrefrigerant
cloggedstraineror
capillarytube
Low
Low
Heating
mode
Low
CS-UW9GKE/CU-UW9GKE/CS-UW12GKE/CU-UW12GKE
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