Midea MEHS-09NIH2 Service Manual page 39

No. Problems
1 standby for normal
2 Operation normally
3 IPM malfunction or IGBT over-strong current protection
4 Over voltage or too low voltage protection
5 Over voltage or too low voltage protection
6 Inverter compressor drive error
7 Inverter compressor drive error
8 Inverter compressor drive error
For MCHS-22NiH2,
O（light） X（off）
LED4
(Green)
O
X
☆
O
O
X
☆
☆
☆（2.5Hz flash）
37
LED3
IU display
(Red)
X
O
X P0
O P1
☆
P1
☆
P4
O P4
☆
P4