Mitsubishi Electric CITY MULTI PUMY-SP140YKM User Manual

Check code
Abnormal points and detection methods Causes and checkpoints
(1)AbnormalifTH4fallsintofollowingtemperatureconditions;
●exceeds105
[221°F]continuouslyfor5minutes  
●exceeds115 [239°F]
TH4:Thermistor<Compressor>
LEV:Linearexpansionvalve
Malfunctionofstopvalve
Over-heatedcompressoroperationcausedby
shortage of refrigerant
Defective thermistor
Defective outdoor multi controller circuit board
LEVperformancefailure
Defective indoor controller board
Clogged refrigerant system caused by foreign
object
Refrigerant shortage
(Refrigerantliquidaccumulationincompressorwhile
indoor unit is OFF/thermo-OFF.)
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnectinganyconnectors,orreplacingboards.
Diagnosis Remedy
1102
(U2)
Compressortemperaturetrouble
Yes
Yes
No
Yes
Yes
No
No
No
Is5101displayedwhenrestarted?
Istheoutdoorstopvalve(liquid/gas)
fullyopen?
Is there a refrigerant leak?
Is there any abnormality on
connectors/wiressuchasadisconnection,
half-disconnection or breakage?
Checktheconnectionforthermistorwiring
and indoor controller board connector.
Refer to the diagnosis of check code 5101.
Openthestopvalve(liquid/gas)fully.
Repairtherefrigerantleakage.
Connecttheconnectorproperly
(Repairorreplaceitincaseofabreakage).
(5101)
(1102)
(no leak)
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Mitsubishi Electric CITY MULTI PUMY-SP140YKM Specifications

General

Brand	Mitsubishi Electric
Model	CITY MULTI PUMY-SP140YKM
Category	Air Conditioner
Language	English