Wiring diagrams
Models: WHS09WMA21S, WHS12WMA21S, and
WHS18WMA21S
FAN MOTOR
CONTROL UNIT
PIPE TEMP.
ROOM TEMP.
INDOOR
UNIT
OUTDOOR
UNIT
Thermistor
( Pipe temp. )
15 k
6.5 k
4.5 k
1.3 V
2.2 V
2.7 V
20
30
0
68 F
F
86 F
32
Temperature
Thermistor
( Room temp. )
15 k
6.5 k
4.5 k
1.3 V
2.2 V
2.7 V
Fan motor
1
2
3
4
5
Pin No. Terminal
code
C
S
R
Function
of terminal
Running coil
COM
Starting coil
Lead wire
color
White
Black
Red
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Summary of Contents for WHS09SZA11S
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