ICM2805A WIRING DIAGRAM
For Models G5R(-) Gas Furnace with UTEC Control Board #624631
MOTOR PLUG
6
5
WHITE
BLACK
BLACK
4
BLUE
3
ORANGE
2
BLACK
RED
1
BLACK
BLACK
M1
M2
HUM
M3
HEAT
COOL
LI
EAC
INDUCER
XFMR
WHITE
RED
BLUE
ORANGE
BLACK
BLACK
1
4
2
5
3
6
IGNITOR
BLACK
HUM
EAC
WHITE
WHITE
BROWN
YELLOW
C
2
5
8
3
6
9
GAS
VALVE
RED
FLAME SENSOR
FLAME
Y
C
G
STATUS
W
7
Y
4
C
3 OR 4 SPEED
MOTOR
1
AIR CONDITIONER
CONDENSING UNIT
L
NEUTRALS
ML
MH
H
TWIN
BLOWER OFF
180
120
90
60
R
24V
COM
3 AMP FUSE
W
BLACK W/ WHITE STRIPES
BLACK
120/240V
G
24V
Y
VENT SAFETY
SWITCH (SELECT
MODELS ONLY)
WHITE
WHITE W/ BLACK STRIPES
R
TRANSFORMER
ROOM
THERMOSTAT
GROUND
BLOWER
DOOR
SWITCH
120/240 INPUT
VOLTAGE
JUNCTION BOX
BLACK
WHITE
ORANGE
ORANGE
BLUE
VENT PRESSURE
SWITCH
(93+ MODELS ONLY)
PRESSURE
SWITCH
VENT SAFETY
SWITCH (SELECT
MODELS ONLY)
FLAME ROLL-OUT
SWITCH
(ALL MODELS)
BLUE
AIR SUPPLY
LIMIT SWITCH
(SELECT
MODELS ONLY)
BLOWER DECK
SWITCH (SELECT
MODELS ONLY)
FLAME ROLL-OUT
SWITCH (SELECT
MODELS ONLY)
FAULT CONDITION
STATUS RED LIGHT
Power ON
ON
Limit circuit open
1 FLASH
Pressure switch stuck open
2 FLASHES
Pressure switch stuck Closed
3 FLASHES
Ignition failure (check ground)
4 FLASHES
115 VAC & neutral reversed or no ground
5 FLASHES
NOTE:
If any of the original wire as supplied with
the furnace must be replaced, it must be
replaced with wiring material having a
temperature rating of at least 105 C.
False flame or gas relay shorted
Continuous
Use copper conductors only.
Power OFF
OFF
FAULT CONDITION
FLAME YELLOW LIGHT
Low flame sensor signal
Continuous flash
• Low Voltage
Flame present
ON
• High Voltage
LEGEND
• Field Wiring
Factory Wiring:
LAPP48-1