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NOTE 6
WW
Y1
PU
Y
Y2
W
G
R
W
G
R
PU
BL
Y
G
R
Y1
C
Y2
G
R
THC-NO ECONOMIZER
NOTE 5
PL
NOTE 3
NOTE 2
NOTE 5
NOTE 4
THC-WITH ECONOMIZER
BL C
STRIPPED LEAD
FROM TERMINAL BLOCK
FROM ECON. PLUG
STRIPPED LEAD
PS
TROUBLESHOOTING THIS APPLIANCE. STATUS LIGHT CODES ARE AS FOLLOWS:
THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO
CC
STICKING GAS VALVE
STATUS LIGHT
EQUIP. STATUS
FALSE FLAME SENSED
OPEN LIMIT SWITCH
6 BLINKS
5 BLINKS
3 BLINKS
2 BLINKS
4 BLINKS
NORMAL OPERATION
1 BLINK
OFF
ON
VSTB
TB
INSTALLER/SERVICEMAN
TO THC
R
R
G
G
W/W2
W
Y/ Y2
Y1
C
C
Y1
GRW
ECON
9
7
10
8
12
11
C
Y1
CHECK
-
B4312005 Rev. A
THC-FIELD WIRING
4. CRANKCASE HEATER (OPTIONAL).
231
56
4
208-230/1/60
GV
VSM
1
5
IIC
6
3
FS
FUSE
4
RS
ALS
LS
FS
IGN
L1
L1 D1
L1
L1
H
C
TRANS
VM
CC
L1
T1
C
COMP
R
S
L1
CAP1H
C
F
T2
CC
CM
SUPPLY VOLTAGE
208-230/1/60
CH
FIELD INSTALLED POWER
VSTB VARIABLE SPEED TERM. BLOCK
IIC INTEGRATED IGNITION CONTROL
THC THERMOSTAT HEAT & COOL
2
NOTES
TB TERMINAL BLOCK
VSM VAR. SPEED MOTOR
TRANS TRANSFORMER
RS ROLLOUT SWITCH
VM VENT MOTOR
PS PRESSURE SWITCH
IGN IGNITOR
GV GAS VALVE
LS LIMIT SWITCH
PL PLUG
L2
L2
L2
R RED
Y YELLOW
W WHITE
FIELD INSTALLED CONTROL
BL BLUE
PK PINK
PU PURPLE
G GREEN
O ORANGE
BR BROWN
WIRE CODE
B BLACK
ALS AUXILLARY LIMIT SWITCH
COMP COMPRESSOR
CM CONDENSER MOTOR
CC CONTACTOR
CH CRANKCASE HEATER
FS FLAME SENSOR
COMPONENT LEGEND
CAP CAPACITOR
L2
L2
MARKED TERMINAL
LINE VOLTAGE
LOW VOLTAGE
UNMARKED TERMINAL
WIRING
WIRE SPLICE
SOL SOLENOID (2 STAGE)
nd
Y1
SOL
Y/ Y2
Y2
1. REPLACEMENT WIRE MUST BE THE SAME SIZE AND TYPE OF
INSULATION AS ORIGINAL.(USE COPPER CONDUCTOR ONLY).
2. FOR 208 VOLT TRANSFORMER OPERATION MOVE BLACK WIRE
FROM TERMINAL 3 TO TERMINAL 2 ON TRANSFORMER.
3. SOME MODELS HAVE VENT MOTORS EQUIPPED WITH A 230V LEAD (RED)
AND A 208V LEAD (BLACK). IF EQUIPPED, CONNECT VENT MOTOR BLACK
LEAD IN PLACE OF RED LEAD AT UII (D1) FOR 208V OPERATION.
5. ACCESSORY ECONOMIZER PLUG (ON SELECT MODELS) ADJACENT
TO BLOWER HOUSING IN RETURN AIR COMPARMENT.
6. TWO STAGE THERMOSTAT CONNECTIONS IF USED WITH ECONOMIZER
OPTION INSTALLED.
NO POWER OR
INTERNAL CONTROL
FAULT
IGNITION FAILURE
OR
OPEN ROLLOUT
SWITCH
OR
OPEN AUX. LIMIT
SWITCH
PRESSURE SWITCH
OPEN
PRESSURE SWITCH CLOSED
WITHOUT INDUCER ON
COMPRESSOR
OUTPUT DELAY
3 MIN. COMP.
ANTI-CYCLE TIMER
MAIN LIMIT OPEN
BAD SWITCH
CHECK
PRESSURE SWITCH
CHECK
PRESSURE SWITCH
GAS FLOW
GAS PRESSURE
GAS VALVE
FLAME SENSOR
FLAME ROLLOUT
BAD SWITCH
AUX. LIMIT OPEN
CHECK INPUT POWER
CHECK FUSE ON CONTROL
REPLACE CONTROL
GPG13(60)1A WIRING DIAGRAM
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 is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.