Troubleshooting Sheet

After power on, LED3(Green color) and LED2(Red color) will be flash if the unit has some problems.
No.
Problems
LED
3
(Green)
LED2
(Red)
IU display
1
standby for normal
O
X
2
Operation normally
X
O
3
IPM malfunction or IGBT ov
er-strong current protection
☆
X
P0
4
Over voltage or too low voltage protection
O
O
P1
5
EEPROM parameter error
O
☆
E5
6
Inverter compressor drive error
X
☆
P4
7
Inverter compressor drive error
☆
O
P4
8
Inverter compressor drive error
☆
☆
P4
O（light） X（off） ☆（2.5Hz flash）