27
9.1 Indoor Unit Error Display
Operation
lamp
Timer lamp
Display
LED STATUS
☆
1 time
X
E0
Indoor unit EEPROM parameter error
☆
2 times
X
E1
Indoor / outdoor units communication error
☆
3 times
X
E2
Zero-crossing signal detection error
☆
4 times
X
E3
Indoor fan speed has been out of control
☆
5 times
X
E4
Indoor room temperature sensor T1 open circuit or
short circuit
☆
6 times
X
E5
Evaporator coil temperature sensor T2 open circuit or
short circuit
☆
7 times
X
EC
Refrigerant leakage detection
☆
1 times
O
F0
Overload current protection
☆
2 times
O
F1
Outdoor ambient temperature sensor T4 open circuit or
short circuit
☆
3 times
O
F2
Condenser coil temperature sensor T3 open circuit or
short circuit
☆
4 times
O
F3
Compressor discharge temperature sensor T5 open
circuit or short circuit
☆
5 times
O
F4
Outdoor unit EEPROM parameter error
☆
6 times
O
F5
Outdoor fan speed has been out of control
☆
1 times
☆
P0
IPM malfunction or IGBT over-strong current protection
☆
2 times
☆
P1
Over voltage or over low voltage protection
☆
3 times
☆
P2
High temperature protection of compressor top
diagnosis and solution(only for 9k,12k models)
☆
4 times
☆
P3*
Outdoor ambient temperature too low.
☆
5 times
☆
P4
Inverter compressor drive error
☆
6 times
☆
P5
Indoor units mode conflict (multi-zone ONLY)
O
（
light
）
X
（
off
）
☆（
flash
）
*P3
1) In heating mode, when the outdoor temperature is lower than -25 for 1 hour, the indoor unit display error code
P3.
2) If the OUTDOOR temperature is higher than -22c for 10 minutes and compressor stop for 1 hour OR outdoor
temperature is higher than -5C for 10 minutes, then the unit will return to work.
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