Display Board & Fault Codes
8.1 Indoor Unit Error Display
Operation
lamp
Timer lamp Display LED STATUS
1 time
X E0 Indoor unit EEPROM parameter error
2 times
X E1 Indoor / outdoor units communication error
4 times
X E3 Indoor fan speed has been out of control
5 times
X E4
Indoor room temperature sensor T1 open circuit
circuit
6 times
X E5
Evaporator coil temperature sensor T2 open circuit or
short circuit
7 times
X EC Refrigerant leakage detection
1 times
O F0
Overload current protection
2 times
O F1
Outdoor ambient temperature sensor T4 open circuit or
short circuit
3 times
O F2
Condenser coil temperature sensor T3 open circuit or
short circuit
4 times
O F3
Compressor discharge temperature sensor T5 open
circuit or short circuit
5 times
O F4 Outdoor unit EEPROM parameter error
6 times
O F5 Outdoor fan speed has been out of control
1 times
P0 IPM malfunction or IGBT over-strong current protection
2 times
P1 Over voltage or over low voltage protection
3 times
P2
High temperature protection of compressor top
diagnosis and solution
5 times
P4 Inverter compressor drive error
O
light
X
off
flash
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