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Error code
Display of 5 indicator lights
Fault Code
Fault classification / Fault type
The timer light flashes once
L3
Compressor phase failure
The timer light flashes once
L2
Compressor running out-of-step fault
The timer light flashes once
L1
Compressor phase current overcurrent protection
PFC overcurrent software protection
L6
The timer light flashes once
Compressor current detection AD abnormality protection
L7
The timer light flashes once
Shunt resistor imbalance fault
L8
The timer light flashes once
Compressor IPM temperature sensor fault
L9
The timer light flashes once
The timer light flashes once
L0
Dc overvoltage and undervoltage fault
PFC overcurrent hardware protection
L5
The timer light flashes once
Compressor driver module IPM failure
L4
The timer light flashes once