Compressor Sensor System Abnormality - Daikin CTXG09QVJUW Service Manual

Troubleshooting for Outdoor Unit

7.14 Compressor Sensor System Abnormality

H0
Error Code
Outdoor Unit LED A
Display
Method of Error
Detection
Error Decision
Conditions
Supposed
Causes
178
j i i h h
1 2 3 4
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.
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.
Disconnection of reactor
Disconnection of compressor harness
Defective outdoor unit PCB
Defective compressor
h
5
+
Power
DC voltage
Module
–
DC current
Compressor
SiUS121632EA
PCB
(R22001)
Service Diagnosis