Troubleshooting SiUS071735EB
83 Service Diagnosis
4.16 OL Activation (Compressor Overload) or HPS Activation
(High Pressure Switch)
Applicable
Models
RX09/12RMVJU9A
Error Code E5
Method of Error
Detection
A compressor overload is detected through compressor OL.
Abnormality is detected when the contact of the high pressure switch opens.
Error Decision
Conditions
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Disconnection of discharge pipe thermistor
Disconnection of indoor or outdoor heat exchanger thermistor
Defective discharge pipe thermistor
Defective indoor or outdoor heat exchanger thermistor
Disconnection of connector S40
Disconnection of 2 terminals of OL (Q1L)
Disconnection of 2 terminals of HPS (S1PH)
Defective OL (Q1L)
Defective HPS (S1PH)
Broken OL and HPS harness
Defective electronic expansion valve or coil
Defective four way valve or coil
Defective outdoor unit PCB
Refrigerant shortage
Water mixed in refrigerant
Defective stop valve
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