Troubleshooting for Outdoor Unit SiUS121736EA
197 Service Diagnosis
7.14 Compressor Sensor System Abnormality
Error Code H0
Outdoor Unit LED
Display
A j 1 i 2 i 3 h 4 h 5 h
Method of Error
Detection
The system checks the power supply voltage and the DC voltage before the compressor starts.
The system checks the DC current of the compressor right after the compressor starts.
Error Decision
Conditions
The power supply voltage and the DC voltage is obviously low or high.
The DC current of the compressor does not flow when the compressor starts.
Supposed
Causes
Disconnection of reactor
Disconnection of compressor harness
Defective outdoor unit PCB
Defective compressor
+
–
PCB
Compressor
DC voltage
DC current
Power
Module
(R22001)
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