SiBE121021_C Troubleshooting for Outdoor Unit
Service Diagnosis 355
7.15 Output Overcurrent Detection
Remote
Controller
Display
L5
Outdoor Unit LED
Display
A
j
1
h
2
h
3
i
4
h
5
h
Method of
Malfunction
Detection
An output overcurrent is detected by checking the current that flows in the inverter DC section.
Malfunction
Decision
Conditions
îš„
A position signal error occurs while the compressor is running.
îš„
A speed error occurs while the compressor is running.
îš„
An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
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
Supposed
Causes
îš„
Defective power transistor
îš„
Wrong internal wiring
îš„
Abnormal supply voltage
îš„
Defective outdoor unit PCB
îš„
Closed stop valve
îš„
Defective compressor
îš„
Poor installation condition
To Next Page
Loading...
Need help?
General
