37
No. Problems
LED4
(Green)
LED3
(Red)
IU display
1 standby for normal O X
2 Operation normally X O
3 IPM malfunction or IGBT over-strong current protection
☆
X P0
4 Over voltage or too low voltage protection O O P1
5 Over voltage or too low voltage protection O
☆
P1
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）
For MCHS-22NiH2,
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