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WIRING DIAGRAM
L1
IIC
L1
ODF
INDUCER
F
R
W1
W2
TO
MICRO
Y2
C
Y1
G
TO
MICRO
LO HEAT
HI HEAT
COOL
R
W1
C
R
C
W1
DIAGNOSTIC
LED - RED
ON
OFF
1 FLASH
2 FLASHES
3 FLASHES
4 FLASHES
5 FLASHES
6 FLASHES
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
SUPPLY VOLTAGE
208-230/1/60
SEE NOTE 7
CH
CHS
SEE NOTE 8
T2
C
T1
R
C
COMP
S
H
RCCF C
DC
F
DF2
CM
DF1
HVDR
LO
HI
LO
VM
HI
SEE NOTE 3
L1
EM
SEE NOTE 2
2
L1
3
1
TR
P1
2
ALS
LS
RS
1
3
PS
6
8
9
M
GV
7
HI
5
C
P2
DR
1
6
4
4
2
5
1
3
3
HPS
6
RVC
2
DC
R
C-RV
O-RV
Y
CNT
R-DFT
DFT
R-PS1
LPS
DFT
C
1
T1
SEE NOTE 6
T2
EM C
2
T3
T5
T4
5
P9
SEE NOTE 5
2
W2
G
Y1
Y2
1
3
OTP
Y1
G
O
W2
++
THERMOSTAT
STATUS
NORMAL OPERATION
CHECK INPUT POWER
NO POWER OR
INTERNAL CONTROL
FAULT
IGNITION FAILURE
CHECK PRESSURE SWITCH
PRESSURE SWITCH OPEN
CHECK VENT MOTOR
PRESSURE SWITCH CLOSED
CHECK PRESSURE SWITCH
WITHOUT INDUCER ON
CHECK WIRING FOR SHORTS
CHECK MAIN LIMIT SWITCH
OPEN LIMIT SWITCH
CHECK AUXILIARY LIMIT SW.
CHECK ROLLOUT LIMIT SW.
CHECK GAS VALVE
FALSE FLAME DETECTED
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
3 MIN COMP. SHORT
COMPR. SHORT CYCLE DELAY
L2
COMPONENT LEGEND
ALS
AUXILLARY LIMIT SWITCH
C
CONTACTOR
CH
CRANKCASE HEATER
CHS
CRANKCASE HEATER SWITCH
C
CM
CONDENSER MOTOR
COMP
COMPRESSOR
DC
IIC
DFT
DR
EM
PARK
L2
F
FS
L2
GND
L2
GV
HPS
IIC
L2
IGN
L2
LPS
LS
OTP
P1
P2
PS
RCCF
RS
RVC
TR
VM
NOTES
1. REPLACEMENT WIRE MUST BE THE SAME SIZE AND TYPE OF
INSULATION AS ORIGINAL (AT LEAST 105°C). USE COPPER
CONDUCTOR ONLY.
2. FOR 208V TRANSFORMER OPERATION MOVE BLACK WIRE FROM
TERMINAL 3 TO TERMINAL 2 ON TRANSFORMER.
3. FOR 208V VENT MOTOR OPERATION, REMOVE BLUE LEAD FROM
INDUCER LOW TERMINAL. MOVE BLACK LEAD FROM PARK TERMINAL
TO INDUCER LOW TERMINAL, AND PLACE BLUE LEAD ON PARK.
4. USE COPPER CONDUCTORS ONLY.
++
USE NEC CLASS 2 WIRE.
5. FOR OUTDOOR THERMOSTAT, REMOVE PLUG FROM HARNESS AND
CONNECT PLUG FROM OUTDOOR THERMOSTAT TO HARNESS.
6. TO CHANGE AIRFLOW MOVE YELLOW WIRE (COOLING / HEAT PUMP),
WHITE WIRE (LOW STAGE GAS), OR BROWN WIRE (HIGH-STAGE GAS)
O
W
TO SPEED TAP T1, T2, T3, T4, OR T5 AT EVAPORATOR MOTOR.
PS2
C
REFER TO UNIT AIRFLOW TABLES FOR TO DETERMINE THE
APPROPRIATE SPEED TAP FOR APPLICATION. UNITS SHIPPED WITH
YELLOW, WHITE, AND BROWN ON T4, T1, AND T2 RESPECTIVELY.
7. CRANKCASE HEATER AND CRANKCASE HEATER SWITCH FACTORY
EQUIPPED WHEN REQUIRED.
8. DOUBLE POLE CONTACTOR SHOWN. SINGLE POLE CONTACTOR
COULD BE FACTORY EQUIPPED AS AN ALTERNATE CONFIGURATION.
INTEGRATED CONTROL
PLUG CONNECTION
SWITCH (PRESS.)
DIAGNOSTIC
CHECK
CHECK
LED - RED
-
-
7 FLASHES
CHECK FUSE(S)
REPLACE CONTROL
8 FLASHES
GAS FLOW
GAS PRESSURE
GAS VALVE
FLAME SENSOR
9 FLASHES
CHECK TUBING
DIAGNOSTIC
LED - AMBER
OFF
ON
1 FLASH
CYCLE DELAY
2 FLASHES
25
DEFROST CONTROL BOARD
DEFROST THERMOSTAT
DEFROST RELAY
EVAPORATOR MOTOR
FUSE
FLAME SENSOR
EQUIPMENT GROUND
GAS VALVE
HIGH PRESSURE SWITCH
INTEGRATED IGNITION CONTROL
IGNITOR
LOW PRESSURE SWITCH
LIMIT SWITCH
OUTDOOR THERMOSTAT PLUG
9 PIN CONNECTOR PLUG
6 PIN CONNECTOR PLUG
PRESSURE SWITCH
RUN CAPACITOR COMPRESSOR / FAN
ROLLOUT SWITCH
REVERSING VALVE COIL
TRANSFORMER
VENT MOTOR
JUNCTION
EQUIPMENT GROUND
TERMINAL
FIELD GROUND
INTERNAL TO
FIELD SPLICE
SWITCH (TEMP)
IGNITER
OVERCURRENT
PROT. DEVICE
STATUS
LIMIT OPEN 5 TIMES IN
SAME CALL FOR HEAT
CHECK AUXILIARY LIMIT SW.
CHECK JUMPER BETWEEN
IDT/ODT OPEN
PSW/LOC OPEN
STATUS
NO FLAME PRESENT
NORMAL FLAME PRESENT
LOW FLAME SIGNAL
FALSE FLAME DETECTED
FACTORY WIRING
LINE VOLTAGE
LOW VOLTAGE
OPTIONAL HIGH
VOLTAGE
FIELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
WIRE CODE
BK BLACK
BL BLUE
BR BROWN
GR GREEN
OR ORANGE
PK PINK
PU PURPLE
RD RED
WH WHITE
YL YELLOW
CHECK
CHECK MAIN LIMIT SWITCH
1 AND 4 ON 6-CIRCUIT
CONNECTOR
CHECK OPTIONAL
REFRIGERANT SWITCHES
CHECK REFRIGERANT
SWITCHES FOR LOSS OF
CHARGE OR HIGH HEAD
PRESSURE
CHECK
-
-
GAS FLOW
GAS PRESSURE
GAS VALVE
FLAME SENSOR
CHECK GAS VALVE
CHECK FOR SHORTS IN
FLAME SENSOR WIRING
0140G04501-B
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