SiBE121021_C Troubleshooting for Outdoor Unit
Service Diagnosis 343
7.9 Compressor Sensor System Abnormality
Remote
Controller
Display
H0
Outdoor Unit LED
Display
A
j
1
i
2
i
3
h
4
h
5
h
Method of
Malfunction
Detection
îš„
Fault condition is identified by the supply voltage and the DC voltage which is detected
before the compressor startup.
îš„
Fault condition is identified by the compressor current which is detected right after the
compressor startup.
îš„
If the error repeats 16 times, the system is shut down.
îš„
Reset condition: Continuous run for about 5 minutes without any other error
Malfunction
Decision
Conditions
îš„
The detected value of the supply voltage and the DC voltage is obviously low or high.
îš„
The compressor current does not run when the compressor is started.
Supposed
Causes
îš„
Disconnection of reactor
îš„
Disconnection of compressor
îš„
Defective outdoor unit PCB
îš„
Defective compressor
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