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SiUS121827E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 229
7.19 Output Overcurrent Detection
Error Code L5
Outdoor Unit LED
Display
A j 1 h 2 h 3 i 4 h 5 h
Method of Error
Detection
An output overcurrent is detected by checking the current that flows in the inverter DC section.
Error Decision
Conditions
A position signal error occurs while the compressor is running.
A rotation speed error occurs while the compressor is running.
An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Supposed
Causes
Poor installation condition
Closed stop valve
Defective power module
Wrong internal wiring
Abnormal power supply voltage
Defective outdoor unit PCB
Supply voltage out of specification
Defective compressor
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