Troubleshooting - Outdoor Unit Related Si18-201
284 Service Diagnosis
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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