BLACK
BLUE
BLACK
02-YB-43 (28)
RED
BLACK/WHITE
GREEN
WHITE
BLACK
RED
WHITE
RED
BLACK
BLACK
RED
RED
RED
YELLOW
BROWN
BROWN
BLACK
BLACK
GREEN
ORANGE
ORANGE
ORANGE
RED
YELLOW
YELLOW
BROWN
BROWN
BLUE
GREEN
BLUE
RED
BLACK
BLUE
BLUE
RED
WHITE
YELLOW
WHITE
ORANGE
YELLOW
BLACK
RED
BROWN
WHITE
BLACK
BLACK
YELLOW/BLACK
YELLOW
WHITE
BLACK
208/230 VoltDual Fuel Heating and Cooling Packaged System Single Phase / 60 Hz.
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
NOTES:
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 V
a la terre.
DEFROST BOARD OPERATION:
Heat Pump operates in heating mode until the combination of outdoor ambient
and outdoor coil temperatures initiate a defrost cycle. The outdoor coil
temperature must be at or below 32˚F before the defrost cycle begins.
There must be a minimum of 20 minutes between defrost cycles. After this
time, temperature conditions must call for defrost continuously for 4 1/2
minutes before a defrost cycle is initiated.
The defrost cycle ends when the outdoor temperature reaches 32˚F or the
defrost terminate time of 13 minutes 39 seconds is reached.
1
2
3
FAULT CONDITION STATUS LIGHT (RED)
Limit Circuit Open 1 Flash
Pressure Switch Stuck Open with Inducer On 2 Flashes
Pressure Switch Stuck Open with Inducer Off 3 Flashes
Ignition Failure (Check Ground) 4 Flashes
230 VAC & Neutral Reversed or No Ground 5 Flashes
False Flame or Gas Relay Shorted Continuous Flash
FAULT CONDITION STATUS LIGHT (YELLOW)
Low Flame Sensor Signal Continuous Flash
NOTES:
1. Disconnect power before servicing.
2. For supply connections use copper conductors only.
3. Not suitable on systems that exceed 150V to ground.
4. If any of the original wire as supplied with the furnace must be replaced,
it must be replaced with wiring material having a temp. rating of at least 105˚C.
5. For supply wire ampacities and overcurrent protection, see unit rating plate.
6. Ensure that wires from the blower remain connected to the board
thermostat terminals after making the field thermostat connections.
7. Wiring shown for single stage operation. For two stage operation, move brown wire from
low side of the gas valve to W2 on the terminal block and remove jumper from W1 to W2.
See installation instructions for an alternate means of controlling second stage.
8. A heat pump thermostat with fossil fuel back-up heat capability is REQUIRED for this system.
BROWN
WIRING DIAGRAM
7110720
0310
(Replaces 7108140)
¢711072w¤
R
S
C
L1
L2
T1
T2
TO 208/230 VAC
POWER SUPPLY
DUAL CAPACITOR
CHF
OUTDOOR
FAN MOTOR
54321
54321
VARIABLE
SPEED
BLOWER
MOTOR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
YELLOW
YELLOW
BLACK
GRAY
BLUE
BLUE
BROWN
ORANGE
ORANGE
RED
WHITE
GREEN
13
R
12
HUM
HUM
10
5
7
11
2
W
4
123456789
D1
D2
D3
D4
D5
D6
D7
D8
VARIABLE SPEED BOARD
FLAME
TWIN
STATUS
L1
XFMR
EAC
COOL
HEAT
M3
M2
M1
HUM
NEUTRALS
EAC
COM
3 AMP FUSE
BLOWER OFF
24V
HUM
1
2
3
4
5
6
7
8
9
4
5
6
1
2
3
RC YGW
HI LO
PRIMARY
GAS VALVE
C
PRESSURE
SWITCH
GROUND
LIMIT
SWITCH
FLAME ROLL-OUT
SWITCH
FLAME SENSOR
11
22
R
C
INDUCER MOTOR
IGNITOR
BROWN
BROWN
AMBIENT
SENSOR
TEST
LRCYO
W2
IN
W2
OUT
COND FAN
AMBIENT
AMBG
COILG
COIL
DEMAND
DEFROST CONTROL
BOARD
M
PRESS
SW
REV
VALVE
TERM.
STRIP
G
C
L
W1
R
Y2
E
O
Y1
W2
REV. VALVE SOL.
BLACK
LOW
PRESSURE
SWITCH
HIGH
PRESSURE
SWITCH
YELLOW/
BLACK
COIL
SENSOR
TRANSFORMER
240V 208V
24V
COM
COMPRESSOR
CONTACTOR
R
S
C
CCH
IF
EQUIPPED
YELLOW/
BLACK
YELLOW
BLACK
BLUE
BLACK
02-YB-43 (28)
RED
BLACK/WHITE
GREEN
WHITE
BLACK
RED
WHITE
RED
BLACK
BLACK
RED
RED
RED
YELLOW
BROWN
BROWN
BLACK
BLACK
GREEN
ORANGE
ORANGE
ORANGE
RED
YELLOW
YELLOW
BROWN
BROWN
BLUE
GREEN
BLUE
RED
BLACK
BLUE
BLUE
RED
WHITE
YELLOW
WHITE
ORANGE
YELLOW
BLACK
RED
BROWN
WHITE
BLACK
BLACK
YELLOW/BLACK
YELLOW
WHITE
BLACK
YELLOW
