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
The compressor running frequency is more than
A
Hz and input current is below
B
A.
If the error repeats 4 times, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Defective power transistor
Breaking of wiring or disconnection
Defective reactor
Defective outdoor unit PCB
A
(Hz)
B
(A)
50-75 class
55
0.5
80/90 class
32
0.5
