Troubleshooting
Page 74
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 75
E1
Indoor / outdoor units communication error Page 76
E3
The indoor fan speed is operating outside of the normal range Page 78
E4
Indoor room temperature sensor T1 is in open circuit or has short circuited Page 80
E5
Evaporator coil temperature sensor T2 is in open circuit or has short circuited Page 80
Eb
Communication error between the indoor PCB and display board Page 81
EC
Refrigerant leakage detection Page 82
F0
Overload current protection Page 83
F1
Outdoor ambient temperature sensor T4 open circuit or short circuit Page 80
F2
Condenser coil temperature sensor T3 is in open circuit or has short circuited Page 80
F3
Compressor discharge temperature sensor TP open circuit or short circuit Page 80
F4
Outdoor unit EEPROM parameter error Page 75
F5
The outdoor fan speed is operating outside of the normal range Page 78
p0
IPM malfunction Page 84
p1
Over voltage or over low voltage protection Page 85
p2
High temperature protection of IPM module Page 87
p4
Inverter compressor drive error Page 88
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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