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2. General Troubleshooting
2.1 Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, an error code will be displayed. These error codes are described in
the following table:
Display Error Information Solution
E0/EA
Indoor unit EEPROM parameter error Page 61
E1
Indoor / outdoor units communication error Page 62
E3
The indoor fan speed is operating outside of the normal range Page 64
E4
Indoor room temperature sensor T1 is in open circuit or has short circuited Page 67
E5
Evaporator coil temperature sensor T2 is in open circuit or has short circuited Page 67
Eb
Communication error between the indoor PCB and display board Page 68
EF
Intelligent eye module error Page 66
F0
Overload current protection Page 69
F1
Outdoor ambient temperature sensor T4 open circuit or short circuit Page 67
F2
Condenser coil temperature sensor T3 is in open circuit or has short circuited Page 67
F3
Compressor discharge temperature sensor TP open circuit or short circuit Page 67
F4
Outdoor unit EEPROM parameter error Page 61
F5
The outdoor fan speed is operating outside of the normal range Page 64
p0
IPM malfunction or IGBT over-strong current protection Page 70
p1
Over voltage or over low voltage protection Page 71
p2
High temperature protection of IPM module Page 73
p4
Inverter compressor drive error Page 74
For other errors:
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a
temperature reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement.
If the unit responds, the display board requires replacement.
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