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38
Fuse
8.0 Amp 250V fuse
on the control board.
V
An easily replaceable
is conveniently located
EGND
– ACCESSORY
HYD/GAS
– FAN SWITCH
HI
LO
COM
A
B
KEY
C
D
E
F
TRANS 24V
24 VAC
– ACCESSORY
REMOTE THERMOSTAT
DIP SWITCH - HEAT
CONFIGURATION
G
H
I
J
K
L
M
N
O
P
SYN FAULT
IR REMOTE
ODC/IWC-
OUTDOOR COIL SENSOR
IDC
– INDOOR COIL SENSOR
RA
– RETURN AIR SENSOR
N.C.
– NORMALLY CLOSED
N.O.
– NORMALLY OPEN
COND
– CONDENSER MOTOR
REV
– REVERSING VALVE
GAS
– GAS VALVE
FAN
– EVAPORATOR MOTOR
S
T
U
W
X
Y
Z
AA
BB
CC
L2(N)
L2(N)
TRANS IN
TRANS 11V
N.O.
– COMPRESSOR
COM
– ELEC_L
N.O.
– ELEC_N
DISPLAY
COM
– COMPRESSOR
COM
– ELEC_N
N.O.
– ELEC_L
V FUSE
Q
R
W
X
Y
Z
AA
BB
CC
U
T
S
R
A
P
O
N M
C
Q
L
J
I
G
F
K
B
D
E
H
V
Fan Con/Cyc for
heating
Figure 22
Main Control Board
Main Control Board