25
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
WIRING DIAGRAM
0140G04534-B
PU
RD
BK
BK
RD
BL
PU
PU
PU
PU
OR
BL
BK
PU
IGN
ALS
SOL
BK
YL
RD
GR
SEE NOTE 3
EM
208
BK
PU
L1
G
L2
240
3
TR
2
RD
24V
C
1
YL
BL
208-230/1/60
POWER SUPPLY
GND
PU
PU
RD
BK
BR
PU
BK
R
S
COMP
C
T2
T1
CC L2
L1
CM
PU
SEE NOTE 3
BL
BK
SEE NOTE 2
YL
YL
YL
YL
YL
YL
YL
YL
FS
RD
HI COOL
LO COOL
HI HEAT
LO HEAT
P2
MVC
MVH
MVL
PSW
PSW
HLO
TH
2
3
5
6
4
1
5
7
9
8
6
3
1
2
L1
L1
HI
LO
HI
SOL
GV
CC
C
H
M
RS
PS
LS
ALS
TR
EM
VM
H
F
RCCF C
L2
T2
208-230/1/60
CM
L1
R
T1
S
COMP
C
L1
SUPPLY VOLTAGE
P1
IN
TE
G
R
AT
ED
IG
N
IT
IO
N
C
O
N
TR
O
L
CC
CC
COM
HLI
SEE NOTE 2
IN
TE
R
G
RA
TE
D
IG
N
IT
IO
N
C
O
N
TR
O
L
F
Y1
R
C
Y2
W2
W1
TO
MICRO
IN
TE
G
R
AT
ED
IG
N
IT
IO
N
C
O
N
TR
O
L
L1
LO
L2
L2
L2
L2
HPS
1
2
3
SEE
NO
TE
5
RUN CAPACITOR FOR COMPRESSOR/FAN
FACTORY WIRING
SOLENOID (2ND STAGE COOL)
SOL
RCCF
FUSE
F
VARIABLE SPEED TERMINAL BOARD
VSTB
COMPRESSOR
COMP
LINE VOLTAGE
OPTIONAL HIGH VOLTAGE
HIGH VOLTAGE
FIELD WIRING
LOW VOLTAGE
LOW VOLTAGE
BK BLACK
WIRE CODE
PK PINK
OR ORANGE
GR GREEN
BR BROWN
BL BLUE
RD RED
WH WHITE
YL YELLOW
PU PURPLE
ALS
CC
COMPONENT LEGEND
CONTACTOR
AUXILLARY LIMIT SWITCH
GAS VALVE
GV
FS
GND
IGNITOR
PS
LS
IGN
IIC
EQUIPMENT GROUND
PRESSURE SWITCH
LIMIT SWITCH
INTEGRATED IGNITION CONTROL
FLAME SENSOR
TR
TRANSFORMER
ROLLOUT SWITCH
RS
EM
EVAPORATOR MOTOR
ODF
OUTDOOR FAN
HIGH PRESSURE SWITCH
HPS
NOTES
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. USE COPPER CONDUCTORS ONLY
4. FOR 208V OPERATION, REMOVE BLUE LEAD FROM INDUCER LOW
TERMINAL. MOVE BLACK LEAD FROM PARK TERMINAL ONTO
INDUCER LOW TERMINAL. PLACE BLUE LEAD ON PARK TERMINAL.
5. USE NEC CLASS 2 WIRE FOR THERMOSTAT FIELD WIRING.
6. FOR ALTERNATE CONTINUOUS FAN SPEED, CONNECT FAN TERMINAL
FROM ROOM THERMOSTAT TO GREEN WIRE FROM VSTB; SEE
INSTALLATION INSTRUCTIONS FOR DETAILS.
7. FOR DEHUMIDIFICATION, CONNECT A 24VAC DEHUMIDISTAT THAT
OPENS ON HUMIDITY RISE TO GRAY WIRE FROM THE VSTB AND TO
R ON IIC; SEE INSTALLATION INSTRUCTIONS FOR DETAILS. CUT
"HUM" JUMPER ON VSTB.
REPLACE CONTROL
3 MIN COMP. SHORT
CYCLE DELAY
COMPR. SHORT CYCLE DELAY
6 FLASHES
FLASHES
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
CHECK GAS VALVE
CHECK ROLLOUT LIMIT SW.
CHECK AUXILIARY LIMIT SW.
CHECK MAIN LIMIT SWITCH
CHECK WIRING FOR SHORTS
CHECK PRESSURE SWITCH
PRESSURE SWITCH CLOSED
CHECK VENT MOTOR
CHECK TUBING
CHECK FUSE(S)
CHECK INPUT POWER
-
GAS PRESSURE
FLAME SENSOR
GAS VALVE
GAS FLOW
CHECK PRESSURE SWITCH
OFF
ON
1 FLASH
3 FLASHES
2 FLASHES
4 FLASHES
5 FLASHES
FALSE FLAME DETECTED
OPEN LIMIT SWITCH
WITHOUT INDUCER ON
PRESSURE SWITCH OPEN
IGNITION FAILURE
NORMAL OPERATION
NO POWER OR
INTERNAL CONTROL
FAULT
STATUS
CHECK
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
-
NORMAL FLAME PRESENT
-
GAS PRESSURE
FLAME SENSOR
GAS VALVE
GAS FLOW
CHECK GAS VALVE
ON
OFF
1 FLASH
2 FLASHES
FALSE FLAME DETECTED
LOW FLAME SIGNAL
NO FLAME PRESENT
PSW/LOC OPEN
9 FLASHES
CHECK JUMPER BETWEEN 1
AND 4 ON 6-CIRCUIT
CONNECTOR
IDT/ODT OPEN
8 FLASHES
CHECK MAIN LIMIT SWITCH
LIMIT OPEN 5 TIMES IN SAME
CALL FOR HEAT
7 FLASHES
CHECK REFRIGERANT
SWITCHES FOR LOSS OF
CHARGE OR HIGH HEAD
PRESSURE
EQUIPMENT GROUND
FIELD GROUND
FIELD SPLICE
SWITCH (TEMP)
IGNITER
SWITCH (PRESS.)
OVERCURRENT
PROT. DEVICE
JUNCTION
TERMINAL
INTERNAL TO
INTEGRATED CONTROL
PLUG CONNECTION
CM
CONDENSER MOTOR
VENT MOTOR
VM
GY GRAY
DIAGNOSTIC
LED
RED
AMBER
HPS
HI
LOW
ODF
L1
HIGH
FS
T1
LOW
INDUCER
L2
PARK
F
OR
OR
YL
PU
BR
NONE
5 MIN
10 MIN
180
150
120
90
Y2
Y1
G
W2
W1
C
R
BLOWER
OFF DELAY
STAGE
DELAY
ECON
LO HEAT
HI HEAT
HI COOL
LO COOL
24VAC COM
5
4
3
2
1
1
2
3
4
5
6
7
8
9
P1
BL
P2
5
4
2
1
3
6
YL
YL
YL
YL
SEE NOTE 5
H
C
F
H
C
M
GV
GAS
VALVE
W. R.
PS
LS
RS
1 2
1 2
RCCF
OR
OR
YL
YL
PU
PU
PU
PU
BL
BR
YL
YL
PU
PU
BL
YL
BR
WH
RD YL
BR
PU
PU
RD
BL
BK
BK
YL
SEE
NOTES
6 & 7
E/W1
W/W2
Y1
Y/Y2
HUM
G
C
R
F
SEE NOTE 4
GY GR
SEE
NOTES
6 & 7
VSTB
RD
RD
BL
GY
YL
GR
PU
BR
WH
VM
BK
BK
BL
RD
RD
VSTB
SEE
NOTE 4
BK
ECON
SW
ITC
H
8
7
6
5
4
3
2
1
W
1
O
T1
O
T2
HU
M
PJ6
PJ2
PJ4
W
2
C
R
9
H
EA
TE
R
W
1
W
2
C
R
24
V
AC
C
R
8
C
R
7
C
R
6
J3
C
R
5
C
2
4
1
J2
C
R
2
DS1
C
R
1
R
5
OFF
ON
DIP
E
F1
3
A
M
P
C
R
10
R
3
PN
. P
C
B0010
2
(C
FM
)
C
O
N
FI
G
UR
A
TI
O
N
.
D
IP
S
W
IT
C
H
FO
R
P
R
O
PE
R
TO
M
AN
U
AL
PL
EA
SE
RE
FE
R
R
1
R
2
ED
W
2
O
C
O
M
YC
O
N
R
H
EA
TP
U
M
P
CONDENS
ER
O
U
TD
OO
R
TH
ER
M
O
S
TA
TS
HU
M
ID
IS
TA
T
HU
M
Y/
Y2
G
Y1
R
C
O
T2
O
T1
O
TC
O
W
/W
2
E\
W
1
J1
1
Y1
5
HLO HI LIMIT OUTPUT
HLI HI LIMIT INPUT
PSW PRESSURE SWITCH
MVL MAIN GAS VALVE LOW
MVH MAIN GAS VALVE HIGH
TH TRANSFORMER HIGH
MVC MAIN GAS VALVE COMMON
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.
