User manual

15
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
 3 times
X E2 Zero-crossing signal detection error
 4 times
X E3 Indoor fan speed has been out of control
 5 times
X E4
Indoor room temperature sensor T1 open circuit or short
circuit
 6 times
X E5
Evaporator coil temperature sensor T2 open circuit or
short circuit
 7 times
X EC Refrigerant leakage detection
 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(only for 9k,12k models)
 5 times 
P4 Inverter compressor drive error
O（light） X（off）  （flash）
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