103
Rev. 2
SCHEMATICS
TO AVOI
D
P
O
SSI
B
L
E ELECTRI
CAL SHOCK,
PERSONAL I
N
JURY,
OR DEATH,
DI
SCON
NECT THE POW
E
R
B
E
FORE SERVI
CI
NG.
WARNING
!
GUIV
WHITE-RODGERS 50A51-255 INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above, refer
to the appropriate wiring diagram for the unit being serviced.
CO
M
CL
LO
H
I
LI
NE
HO
T
12
0 V
A
C
LI
NE
NE
U
.00
1
1M
1M
K6
K1
HE
A
T
HI
C
OOL
K7
K8
36
E
2 S
T
A
G
E
G
AS VA
L
V
E
H
IGH
LIM
IT
AU
X
LIM
IT
1S
T
S
T
A
G
E
PR
E
SSU
R
E
SWI
T
C
H
FL
A
M
E
SE
N
SO
R
PR
O
BE
IGN
IT
OR
IGN
N
GN
D
MV
L
PS
2
PS
1
H
L
O
H
L
I
CI
RCUL
A
T
O
R
BL
O
W
ER
XF
M
R
XF
M
R
N
2
4
V.
A.
C
.
TH
R
TR
C
Y
G
W1
C
O
M
P
R
ESSO
R
CO
NT
A
CT
O
R CO
IL
T
H
E
R
M
O
ST
AT
R
Y
G
W1
HU
M
IDIF
IE
R
K9
B
HUM
N
INDUCE
R
AI
R
C
L
EAN
ER
AC
N
AC
HUM
K9
A
W2
W2
K3
B
MV
H
RO
L
L
O
UT
SWI
T
C
H
MV
CO
M
P
M
2
ND S
T
A
G
E
PR
E
SSU
R
E
SWI
T
C
H
C
H1
GN
D
FP
IGN
HE
A
T
LO
K2
K2
K1
K1
0
IN
D
HI
IN
D
NE
U
IN
D
LO
K3
A
K3
A
K4
CI
RCUL
A
T
O
R
BL
O
W
ER
IN
P
U
T