26
A/GPUM3 [24/30/36/42/48]***41
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WIRING DIAGRAM
A2
PSS
PSG
PS VCC
PLI
NC BTS
NC BTS
PLO
GV RETURN
TR 24 VAC
TR GND
GV OUTPUT
PLM
12
11
10
9
8
7
6
5
4
3
2
1
FLAME ROD (T7)
COOL FAN
HEAT FAN
J5
PCBBL216
9
8
7
6
5
4
3
2
1
12
11
10
J8
1
2
3
3
2
1
J4
IDC (20 VDC)
I (PWM) C
I (RPM) F
PLM
FAN
PLM
DSI
5
4
3
2
1
L2
L2
L1
GND
J3
5
4
3
2
1
PLM
3A
BK RD
GR
RDWH
PLM PLF
GPT
3
2
1
2
1
BK
GR
RD
RD
BR
GV
BR
CC
T1
T2
BK
CM
BR
RC
GR
YL
BR
BK
PU
COM
H
F
RD
PU
BK
PU
COMP
M
1~
M
1~
M
1~
PLF
PLM
5
4
3
2
1
VM
YL
OR
C
L
G
N
BK
PU
BL
GR
PU
BK
T1
T2
T3
T4
T5
M
1~
YL
WH
EM
FS
YL
BL
RD
GND
TON
t = 180s
R1
Y1
BL
Y2
R2
YL
3
5
4
3
2
1
YL
GR
LINE
VOLTAGE
208-230V/1PH/60Hz
R
C
S
RD
L1
L2
BK
PU
G
R
W
Y
C
5
4
3
2
1
HPS
YL
GR
COM
TR
BR
RD
BK
RD
BK
RD
YL
OR
BR
YL
OR
BR
YL
WH
BL
WH
BK
OR
YL
BR
R C G W Y
1
1
TO THERMOSTAT
2
BK
WH
VM
GR
GR
GR
CCH
GR
GR
GR
GR
YL
WH
3
YL
YL
BL
BK
BK
RD BL GRWH
YL
1
REPLACEMENT WIRE MUST BE SAME SIZE AND TYPE OF
INSULATION AS ORIGINAL (AT LEAST 105° C). USE COPPER
CONDUCTORS ONLY. USE N.E.C. CLASS 2 WIRE FOR ALL
LOW VOLTAGE FIELD CONNECTIONS. USE COPPER
CONDUCTORS FOR UNIT SUPPLY POWER.
FOR 208V SUPPLY POWER, MOVE WIRES FROM THE 240V
TAP TO THE 208V TAP.
TO CHANGE COOLING SPEED, MOVE YL WIRE TO EITHER
THE T4 (LOW COOL) OR T5 (HIGH COOL) SPEED TAP. TO
CHANGE THE HEATING SPEED, MOVE WH WIRE TO EITHER
THE T2 (LOW HEAT) OR T3 (HIGH HEAT) SPEED TAPS.
2
NOTES
3
ALS
AUXILIARY LIMIT SWITCH
BTS
BURNER TEMPERATURE SWITCH
CC
COMPRESSOR CONTACTOR
CCH
CRANKCASE HEATER
CM
CONDENSER MOTOR
COMP
COMPRESSOR
EM
EVAPORATOR MOTOR
FPS
FREEZE PROTECTION SWITCH
FS
FLAME SENSOR
GND
EQUIPMENT GROUND
GPT
GAS PRESSURE TRANSDUCER
GV
GAS VALVE
COMPONENT LEGEND
HPS
HIGH PRESSURE SWITCH
IGN
IGNITOR
PLF
FEMALE PLUG/CONNECTOR
PLM
MALE PLUG/CONNECTOR
PLS
PRIMARY LIMIT SWITCH
RC
RUN CAPACITOR
TON
ON - DELAY TIMER RELAY
TR
TRANSFORMER
VM
VENT MOTOR
WIRE CODE
BLACK
BLUE
BROWN
GREEN
GRAY
ORANGE
PINK
PURPLE
RED
TAN
WHITE
YELLOW
BK
BL
BR
GR
GY
OR
PK
PU
RD
TN
WH
YL
HIGH VOLTAGE
LOW VOLTAGE
OPTIONAL HIGH VOLTAGE
OPTIONAL LOW VOLTAGE
CHASSIS GROUND
FIELD WIRING
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
EARTH GROUND
0140G04631-A
PLS
BTS
ALS
PU
PU
PU
ALS
PLM PLF
PU
PU
2
1
2
1
YL
RD
RD
YL
BL
BL
BL
BL
BL
RD
BK
BK
PU
BK
BK
BK
BK BK
BK
RD
PU
WH
PU
RD
PU
PU
BK
BK
BK
BK
BK
WH
PU
YL
A1
CC
GR
240V
GR
THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS
APPLIANCE. SOME MORE USEFUL STATUS LIGHT CODES ARE BELOW:
THE FAULT CONDITION MUST BE CLEARED FOR 30 SECONDS BEFORE NORMAL OPERATION CAN RESUME.
A POWER CYCLE WILL ALSO RESET ANY LOCKOUT.
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1
2
1
IGN
GR
B
A
OR
OR
