Haier AU55NFIAIA Service Manual page 79

Electronic expansion valve wiring diagram
indoor 1
NOTE：
Valve box power supply and communication wire must be connected with the corresponding
indoor,wiring sequence must be correspondent respectively,L and N must not be connected
reversely,otherwise will cause the unit not work and damaged.
On running, "indoor 1" must be electrified always,or air conditioner does not work normally.
Commercial Air Conditioner
electronic
expansion
valve 3
M
EEV 2
M
EER 1
M
black
white
brown
black
FUSE T3.15A/250VAC
CN1 live wire 1
CN2 neutral wire 1
CN3 COM1 control board
live wire 2 CN4
neutral wire 2
CN5
COM2 CN6
CN15 valve 3
CN14 valve 2
CN13 valve 1
6 5 2 1
4 3
black
white
white
brown
brown
indoor 2
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Model: AU55NFIAIA
MP3 wiring diagram:
CN7 live wire 3
CN8 neutral wire 3
CN9 COM3
SERIAL
1 2
CN16
CN10
CN11
CN12
yellow／green
indoor 3