INSTALLATION, OPERATION & APPLICATION GUIDE
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ICM2813
Integrated Furnace Control Board
• Electrical Rating @ 77°F (25°C)
• Input Voltage: 18-30 VAC, 60 Hz
• Ignitor Current: 2.0 amp @ 80 VAC, 60 Hz (resistive)
• Inducer Relay: 2.2 FLA–3.5 LRA @ 120 VAC
• Blower Relay: 9.5 FLA–25.0 LRA @ 120 VAC (Heat / Cool / Fan)
• Gas Valve Relay: 1.5 amp @ 25 VAC, 60 Hz 0.6 pf
Environmental
• Operating Temp Range: -40° to 176°F (-40° to 80°C)
• Humidity Range: 5 to 95% relative humidity (non-condensing)
SPECIFICATIONS
INTRODUCTION AND OPERATION
The ICM2813
Lennox and White Rodgers boards shown in the cross reference
section of this guide. The ICM2813 automated gas ignition
control board monitors the ignition sequence including the
inducer, pressure switch, hot surface igniter, gas valve, flame
sense, and circulating blower while maintaining full safety circuit
monitoring including the high limit switch, roll out switch and
auxiliary limit switch circuits. Onboard diagnostics will indicate
when a fault condition exists.
REMOVE EXISTING CONTROL
To service control, and prior to disconnection,
label all wires. Failure to do so may result in
wiring errors which can cause dangerous operation.
1. Turn thermostat to OFF position or set it to the lowest
possible setting.
2. Turn OFF electrical supply to furnace.
3. Turn OFF gas supply to furnace.
4. Remove furnace blower and control access doors.
5. Remove control box cover.
Failure to turn o gas and electric supplies can
result in explosion, re,death, or personal injury.
7. Disconnect line voltage, blower, electronic air cleaner wires
(if equipped), and transformer wires.
8. Remove wiring harness from circuit board.
9. Remove screws or any other fasteners and old circuit board.
10. Examine control and control box to check for water stains.
11. Make repairs if any sources of water leakage are found.
systems in the area of the control.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
Use caution when installing and servicing
the furnace to avoid and control electrostatic
discharge; ESD can impact electronic components. These
precautions must be followed to prevent electrostatic discharge
from hand tools and personnel. Following the precautions will
protect the control from ESD by discharging static electricity
buildup to ground.
1. Disconnect all power to the furnace. Do not touch the control
or the wiring prior to discharging your body’s electrostatic
charge to ground.
2. To ground yourself, touch your hand and tools to a clean,
metal (unpainted) furnace surface near the control board.
around, and you must reground yourself.
4. Reground yourself if you touch ungrounded items.
5 Before handling a new control, reground yourself, this will
protect the control. Store the used and new controls in
separate; containers before touching ungrounded objects.
6. ESD damage can also be prevented by using an ESD service
kit.
Lennox: 10M9301, 12L6901, 32M8801, 56L8401, 24L8501,
63K8901, 97L4801, 100925-01, 100925-03, 17W9201, 23W5101,
30W2501, 69M0801, 69M1501, 83M00
White-Rodgers: 50A65-120, 50A65-121, 50A62-120, 50A62-121,
50A62-820, 21D83M-843, 50A66-122, 50A66-123
REPLACES
