SiE18-201 Troubleshooting - Outdoor Unit Related
Service Diagnosis 233
3.3.22 Operation Halt Due to Detection of Output Overcurrent
Outdoor Unit
Indication
L5
Method of
Malfunction
Detection
The output overcurrent is detected using amperage that flows through the DC unit of inverter.
Malfunction
Decision
Conditions
When the output overcurrent was input into microcomputer from the output overcurrent
detection circuitry.
Supposed
Causes
Overcurrent due to faulty power transistor
Overcurrent due to faulty connection of internal wiring
Overcurrent due to power supply voltage error
Overcurrent due to faulty PC board
Incorrect detection due to faulty PC board
Overcurrent due to [CLOSED] stop valve
Overcurrent due to faulty compressor
Overcurrent due to incorrect site installation
Faulty indoor unit solenoid valve
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