Product Overview

ICM2805A
FURNACE CONTROL MODULE
LIS229-2
Low cost, form, fit and functional replacement control board
• Controls gas valve, inducer draft motor, circulating
blower and hot surface ignitor
• Monitors timing, trial for ignition, flame sensing,
lockout, plus pressure, rollout and limit switches.
• Microprocessor-based precision
• Twinning compatible with another ICM2805A furnace
control
• Diagnostic LEDs aid in testing and troubleshooting
• Replaces: Nordyne 903106-Kit (for use with G3, G4,
G5, G6, M2 and M3 furnace modules)
Features
Specifications
Voltage Range: Line 120/240 VAC @ 60Hz
Ignitor: 5A, 120 VAC
Cool Blower: 10A, 2HP, 240 VAC
Heat: 5A, ½ HP, 250 VAC
Inducer Blower: 4A, 120 VAC
Gas Valve: 1A, 24 VAC
Humidifier Motor: 0.5A, 24 VAC
Electronic Air Cleaner: 1A, 120 VAC
Wiring Diagram #1
For Models G(3,4)R(-) Gas Furnaces with
UTEC Control Board #624631
HUM
12
11
10
9
8
7
6
5
4
3
2
1
24V
COM
L
ML
MH
H
C
1 2 3 4 5 6
BLACK
BLUE
ORANGE
RED
ORANGE
RED
BLUE
BLACK
WHITE W/ BLACK STRIPES
24V
BLACK W/ WHITE STRIPES
WHITE
WHITE
120/240V
BLACK
BLACK
TRANSFORMER
SWITCH
BLOWER DOOR
WHITE OR ORANGE
3 OR 4
SPEED
MOTOR
SWITCH LIMIT
BLOWER
(Down-Flow
Units Only)
SWITCH
LIMIT
SWITCH
FLAME
ROLL-OUT
SWITCH
VENT
LIMIT
GAS
VALVE
BLUE
BLUE
ORANGE
ORANGE
WHITE
BLUE
RED
YELLOW
BROWN
WHITE
BLUE
BLUE
ORANGE
ORANGE
WHITE
BLUE
RED
YELLOW
BROWN
WHITE
BLACK
PRESSURE SWITCH
INDUCER
IGNITOR
FLAME SENSOR
1 4
2 5
3 6
1 4 7
2 5 8
3 6 9
BLACK
BLACK
LI
XFMR
EAC
COOL
HEAT
M3 M2 M1
HUM
EAC
NEUTRALS
TWIN
3 AMP FUSE
WGYCR
W
G
Y
R
FLAME
STATUS
120/240 INPUT
VOLTAGE
JUNCTION BOX
GROUND
YC
ROOM
THERMOSTAT
AIR CONDITIONER
CONDENSING UNIT
BLOWER OFF
60
90
120
180
BLACK
WHITE
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.
Use copper conductors only.
LEGEND
• Field Wiring
Factory Wiring:
• Low Voltage
• High Voltage