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R410A50Hz Universal Outdoor Series Technical Manual
94
GUANGDONG CHIGO HEATING & VENTILATION EQUIPMENT CO., LTD.
12 Troubleshooting
Fault code Table
Fault Description
4LED fault indication
Digital display Wired controller display
Three-phase power phase
sequence fault
E0
E0
Indoor and outdoor unit
communication failure
Timing lights flash
E1
E1
Temperature sensor (T1) fault
Running lights flash
E2
E2
Pipe temperature sensor in the
evaporator (T2) fault
Running lights flash
E3
E3
Pipe temperature sensor in the
evaporator (T2B) fault
Running lights flash
E4
E4
Outdoor unit failure
E5
E5
The indoor unit EEPROM fault
Defrost lights flash slowly
E7
E7
Water over protection
Warning lights flash
EE
EE
Indoor unit with line controller
communication failure
E9
E9
Indoor air blower stall protection
F0
F0
Note: The flash frequency for each of the above indicator is 2.5Hz, slow flashing frequency is 1Hz