5
5
.
.
E
E
L
L
E
E
C
C
T
T
R
R
I
I
C
C
A
A
L
L
D
D
A
A
T
T
A
A
36
2)CONTROL BOARD（AMW3-24U4SKC、AMW4-28U4SKC AMW4-36U4SAC ）
D Valve
Drving
C Valve
Drving
B Valve
Drving
A Valve
Drving
High Pressure Protection
Compressor Discharge Sensor
Outdoor/
Suction/
Condensor
Sensor
Liquid
Pipe A/B/C
Sensor
Gas
A/B/C
Sensor
Gas D Sensor
Liquid Pipe
D Sensor
Defrose
Sensor
Overload
Protection
Communication
Signal A
Communication
Signal B
Communication
Signal C
Communication
Signal N
Communication
Signal D
IPM
POWER
To Filter
Board
To IPM
Board
DC in
CONTROL BOARD（AMW3-20U4SZD AMW3-24U4SZD）
AC N IN
AC L IN
Communication
signal A
Communication
signal B
Communication
signal C
Communication
signal N
High pressure
switch
Gas A/B/C sensor
Liquid pipe A/B/C sensor
Outdoor/suction/coil sensor
Defrost sensor
Discharge sensor
Electric expansion valve C
Electric expansion valve A
Electric expansion valve B
DC+ in
DC- in
Fan motor N OUTHeater N
4-way valve
Heater L
IPM power
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