R410A 60Hz EER 2.36 Series Service Manual
12. Troubleshooting
Fault Code Table
4LED Faults Digital display Failure description
Timer light flashing E2 Ambient temperature sensor (T1) failure
Running light flashing E3 Evaporator pipe temperature sensor (T2) failure
Defrost light flashing E5 Condenser pipe temperature sensor (T3) failure
Warning light flashing F5 Water fulfilled protection
Running light,
defrost light flashing
E1 Indoor unit and wire controller communication failure
Running light,
timer light flashing
P6 Indoor unit EEPROM failure
Defrost light,
timer light flashing
Indoor fan stall protection
(DC Motor)
Defrost light,
warning light flashing
F2
Outdoor protection
(220V Communication control)
F7 Outdoor unit over-current protection (Reserve)
Timer light,
warning light flashing
Indoor unit and outdoor unit communication failure
(RS485 Communication control)
Running light, defrost light, timer light
flashing
High pressure protection
(RS485 Communication control)
Defrost light, timer light, warning light
flashing
Low pressure protection
(RS485 Communication control)
Running light, timer light, warning
light flashing
Outdoor unit exhaust temperature over-high protection
(RS485 Communication control)
Running light, defrost light, timer light,
warning light flashing
Three-phase electricity phase sequence failure
(RS485 Communication control)
Note: the flashing frequency for all above indication lights is 1HZ