Troubleshooting
SiBE041012_A
107
Service Diagnosis
4.20 CT or Related Abnormality (50 Class)
Remote
Controller
Display
H8
Method of
Malfunction
Detection
A CT or related error is detected by checking the compressor running frequency and CT-
detected input current.
Malfunction
Decision
Conditions
The compressor running frequency is more than 55 Hz, and the CT input current is below
0.5 A.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Defective power module
Breakage of wiring or disconnection
Defective reactor
Defective outdoor unit PCB