SiBE121021_C Troubleshooting for Outdoor Unit
Service Diagnosis 347
7.11 CT or Related Abnormality
Remote
Controller
Display
H8
Outdoor Unit LED
Display
A
j
1
i
2
i
3
h
4
h
5
h
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
îš„
The compressor running frequency is more than
A
Hz and input current is below
B
A.
îš„
If the error repeats 4 times, the system is shut down.
îš„
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
îš„
Defective power transistor
îš„
Breaking of wiring or disconnection
îš„
Defective reactor
îš„
Defective outdoor unit PCB
A (Hz) B (A)
50-75 class 55 0.5
80/90 class 32 0.5
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