SiBE121135 Troubleshooting for Outdoor Unit
Service Diagnosis 323
7.19 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, the system is shut down.
îš„ Reset condition: Continuous run for about 5 minutes without any other error
Supposed
Causes
îš„ Poor installation condition
îš„ Closed stop valve
îš„ Defective power module
îš„ Wrong internal wiring
îš„ Abnormal power supply voltage
îš„ Defective outdoor unit PCB
îš„ Defective compressor
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