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WHP36M4A21S/WHP42M5A21S
Main control board
NO.
1
Compressor Overheat Protection Switch
Discharge/Defrost/ Coil/Suction/Ambient
2
Sensor
3
Liquid A/Gas A/ Liquid B/Gas B Sensor
4
Liquid C/Gas C/ Liquid D/Gas D Sensor
5
Electronic Expansion Valve A
6
Electronic Expansion Valve B
7
Electronic Expansion Valve C
8
Electronic Expansion Valve D
9
P I
M
-
I S
1
0
D
r
v i
r e
1 1
A
C
n I
1
2
A
C
C
o
n
a t
t c
13
Base Heater
Description
r o
NO.
14
4-Way Valve
15
Compressor Heater-N
16
Compressor Heater-L
17
SI-N
18
SI-D
19
SI-C
20
SI-B
21
SI-A
2
2
E
E
2
3
C
h
e
c
e k
/ r
C
2
Low Pressure Switch
2
High Pressure Switch
- 39 -
Description
o
m
p
t u
r e
DIP SWITCH
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