MXS Service Manual

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)