Troubleshooting
Electrical Control System 201
2.3 Outdoor unit malfunction
12k
Indoor Display Malfunction or Protection
LED6
(Green)
LED5
(Red)
P0 IGBT over-strong current protection
☆ X
P1 Voltage protection of compressor O O
P4 Indoor / outdoor units communication error ☆ ☆
O(light) X(off) ☆(flash at 2.5Hz)
18~60k
Display Malfunction or Protection
E0 Outdoor EEPROM malfunction
E2
Indoor / outdoor units communication error
E3
Communication malfunction between IPM board and outdoor main board
E4 Open or short circuit of T3 or T4 temperature sensor
E5 Voltage protection of compressor
E6 PFC module protection (Only for 36K, 48K with 1 phase)
P0 Top temperature protection of compressor
P1 High pressure protection(Only for 30K~60K)
P2 Low pressure protection(Only for 30K~60K)
P3 Current protection of compressor
P4 Discharge temperature protection of compressor
P5 High temperature protection of condenser
P6 IPM module protection
P7 High temperature protection of evaporator
In low ambient cooling mode, the LED displays“LC” or alternative displays between running frequency
and “LC”(each displays 0.5s)
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