Westinghouse WHU09DHA21S Service Manual page 30

Models: WHU09SZA21S, WHU12SZA21S, and WHU18SZA21S
USE COPPER SUPPLY WIRES
POWER TERMINAL PANEL
YEL/GRN
4-WAY VALVE
OPTIONAL
INDUCTOR
COMPRESSOR
YEL/GRN
Fan motor
Pin No. Terminal
Temperature
Thermistor
(Outdoor temp.)
Thermistor
(Coil temp.)
Thermistor
(Discharge temp.)
BRN AC-LIN (CN501)
L1
BLU
AC-NIN (CN502)
L2
EARTH (CN503)
YEL/GRN YEL/GRN
L
N WHT
N (CN602)
SI
RED
SI (CN601)
CONNECTION
TERMINAL
PANEL
4-WAY (CN507)
Heating Belt (CN509)
Heating Belt
OPTIONAL
Heating
Heating (CN508)
OPTIONAL
L1 (CN201)
L2 (CN202)
U/R RED U (CN103)
CM
V/S WHT V (CN102)
BLU
W/C W (CN101)
Function of terminal
code
1 FG Revolution pulse output
Vsp Speed control voltage input
2
Vcc Control power voltage input
3
4
GND GND
5
6 Vm Motor power voltage input
0 32
15 k
1.3 V
15 k
1.3 V
187 k
0.18 V
FG (CN901.1)
Vsp (CN901.2)
Vcc (CN901.3)
GND (CN901.4)
+310V (CN901.6)
Control Board
EEV (CN510)
OVER.H (CN704)
ROOM (CN703)
COIL (CN702)
DISS (CN701)
(CN2)
Lead wire
color
Blue
Yellow
White
Black
Red
F 20 68 F 30 86 F
6.5 k 4.5 k
2.2 V 2.7 V
6.5 k 4.5 k
2.2 V 2.7 V
72.1 k 46.5 k
0.43 V 0.64 V
- 29 -
DC FAN MOTOR
FG
Vsp
FM
Vcc
GND
+310V
ELECTRONIC
EXPANSION
VALVE
M
OVERHEAT
PROTECTOR
OPTIONAL
OUTDOOR TEMP.
COIL TEMP.
DISCHARGE TEMP.
Compressor
09 model: 2.08
12 model: 2.08
18 model: 1.72
( )
20 68 F