Indoor Unit Error Display - Pioneer WYC009AMFI20 Service Manual

9.1 Indoor Unit Error Display

Operation
Timer lamp
lamp
☆ 1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 7 times
☆ 1 times
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 1 times
☆ 2 times
☆ 3 times
☆ 5 times
Display LED STATUS
X E0 Indoor unit EEPROM parameter error
X E1 Indoor / outdoor units communication error
Zero-crossing signal detection error(only for
X E2 MS12F-12CRDN1-MP0W, MS12F-18CRDN1-NC2W,
MS12F-22CRDN1-MP5W)
X E3 Indoor fan speed has been out of control
Indoor room temperature sensor T1 open circuit or short
X E4
circuit
Evaporator coil temperature sensor T2 open circuit or
X E5
short circuit
X EC Refrigerant leakage detection
O F0 Overload current protection
Outdoor ambient temperature sensor T4 open circuit or
O F1
short circuit
Condenser coil temperature sensor T3 open circuit or
O F2
short circuit
Compressor discharge temperature sensor T5 open
O F3
circuit or short circuit
O F4 Outdoor unit EEPROM parameter error
O F5 Outdoor fan speed has been out of control
P0 IPM malfunction or IGBT over-strong current protection
☆
P1 Over voltage or over low voltage protection
☆
High temperature protection of compressor top
P2
☆
diagnosis and solution
P4 Inverter compressor drive error
☆
O（light） X（off）
☆（flash）
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