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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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