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Error code
Display of 5 indicator lights
Fault Code
Fault classification / Fault type
The timer light flashes once
F1
Module protection fault/120N three-phase fault
Compressor phase failure
L3
The timer light flashes once
Compressor startup fault
LA
The timer light flashes once
PFC current detection AD abnormal protection
LC
The timer light flashes once
Dc fan current detection AD abnormal protection
Ld
The timer light flashes once
Dc fan missing phase protection
LE
The timer light flashes once
Dc fan out of step protection
LF
The timer light flashes once
DC fan motor IPM protection
LH
The timer light flashes once
PFC protection fault/120N exhaust high temperature protection
F2
AI ECO light flashes twice
The compressor fails to start or runs out of step
F3
The timer light flashes three times