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Error code
Display of 5 indicator lights
Fault Code
Fault classification / Fault type
Outdoor defrost temperature sensor fault
H9
AI ECO light is always on，The timer light flashes 9 times
failure of indoor water pump discharge
H1
AI Energy-Saving Light Always On，The timer light flashes once
line controller communication failure
H2
AI ECO light is always on，The timer light flashes twice
Low pressure sensor failure
HA
AI ECO light is always on，The timer light flashes 10 times
High pressure sensor failure
HC
AI ECO light is always on，The timer light flashes 12 times
IPM module over temperature protection
HE
AI ECO light is always on，The timer light flashes 14 times
Compressor three-phase imbalance protection
HF
AI ECO light is always on，The timer light flashes 15 times