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9. Troubleshooting
9.1 Indoor unit error display
Display LED STATUS
E0 EEPROM parameter error
E1 Indoor / outdoor units communication protection
E2 Zero-crossing signal error
E3 Fan speed out of control
E5 Open or short circuit of outdoor temperature sensor
E6 Open or short circuit of room or evaporator temperature sensor
P0 IGBT over-strong current protection
P1 Over voltage or too low voltage protection
P2 Temperature protection of compressor top.
P4 Inverter compressor drive error
Note: E4 & P3: Reserved function
9.2 Diagnosis and Solution
9.2.1 EEPROM parameter error diagnosis and solution
Replace indoor PCB
Shut off the power supply and turn on it 5s later
The problem comes out again
Is the EEPROM chip plugged in indoor PCB well?
No
Correct the connection
Replace the main PCB of indoor unit
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