ICM Controls ICM2813 General instructions

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
CAUTION
CAUTION
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.
CAUTION
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

2
Pin Time
1 - 2 180 seconds
3 - 4 120 seconds
5 - 6 90 seconds
7 - 8 60 seconds
PIN Time
9 - 10 2 seconds
10 - 11 45 seconds
HEAT BLOWER JUMPER SETTINGS
COOL BLOWER JUMPER SETTINGS
INSTALL NEW CONTROL
1. Ground yourself properly before installing the new ICM2813
control board.
2. Mount the new control using any screws and fasteners
previously removed.
3. Connect all line/low voltage, accessory, thermostat and
ground wires.
4. Verify the sequence of operation.
NOTE: The wire from the door switch to Line  VAC input

can extend the wire or use the  blue wire in kit.
*The heating and cooling OFF delay depends on the option
chosen by the jumper position. The default settings for the
heating and cooling OFF delays are 90 seconds and 45 seconds
respectively.
Pre Purge 
Ignitor Warm Up Time 
Trial for Ignition 
Retries retries
Interpurge 
Post Purge 
Lockout Time 
Heat Fan ON Delay 
Heat Fan OFF Delay* 
Cooling Fan ON Delay 
Cooling Fan OFF Delay* 
Auto Reset minutes
TIMING (IN SECONDS UNLESS SPECIFIED) SEQUENCE OF OPERATION
Upon a call for heat, the thermostat will energize the W terminal
with 24 VAC. With the heat call in place, the inducer fan and

safety switch. The control will enter a 15 second inducer pre

completion of the 15 second inducer pre-purge, the hot surface
igniter is energized. There is a 20 second igniter warm up period
before energizing the gas valve. Once the gas valve is energized,
gas flows into the burners where it is ignited by the hot surface
igniter. Once the burners are on, the flame is sensed by a flame

for ignition period where the control checks the flame signal and
proves the flame. Once flame is established, there will be a 45
second heat ON delay before energizing the main blower. When
the call for heat ends, the gas valve is de-energized, burners go

post purge to purge any residual exhaust gases from the system.



terminal is energized with 24 VAC and a 2 second cool blower ON

outputs are energized. Once the call for cooling ends, there is a
user selectable 2 second or 45 second cooling blower OFF delay
to purge the residual cool air from the duct work. At the end of the


3
Vertical mounting of the ICM2813 in the previous circuit board
location
1. Place the ICM mounting plate over the previous circuit board
location with arrow facing up as seen in Figure .
2. Move the ICM mounting plate over to the right ” for fresh
metal to drill through and mount the unit too.
3. Hold in place with your hand or use tape to secure.
4. With a pencil or marker, mark the () holes labeled “Drill
” Hole” as seen in Figure .
5. Remove ICM mounting plate and drill () holes with a ”
drill bit.
6. Line up the (ICM2813 with
the () holes shown on the ICM mounting plate. These two
components only connect one way.
 
each one snaps into the ICM mounting plate.
8. With the ICM2813
plate, line up the ()

holes drilled in Step 
above.
 
press each of the ()

snaps and locks into
the sheet metal surface.
Check to make sure all
(
fastened to the sheet metal.
Drill
3/16”
Hole
Drill
3/16”
Hole
Drill
3/16”
Hole
Drill
3/16”
Hole
Figure 1
Horizontal or Vertical mounting of the ICM2813 in a new
location
1. Select desired location for the ICM mounting plate.
2. Select orientation (horizontal down flow or vertical up flow)
for the ICM mounting plate.
3. Hold in place with your hand or use tape to secure.
4. With a pencil or marker, mark the () holes labeled “Drill
” Hole” as seen in Figure .
5. Remove ICM mounting plate and drill () holes with a ”
drill bit.
6. Line up the (ICM2813 with
the () holes shown on the ICM mounting plate. These two
components only connect one way.
 
each one snaps into the ICM mounting plate.
8. With the ICM2813
plate, line up the (
Step above.
 
each one snaps and locks into the sheet metal surface. Check
to make sure
all (
are securely
fastened to the
sheet metal.
Drill
3/16”
Hole
Drill
3/16”
Hole
Drill
3/16”
Hole
Drill
3/16”
Hole
Figure 2
1. Plug -pin wiring harness supplied with the ICM2813 board into
the  pin socket on the ICM2813 board as seen in Figure location
. It is a keyed connector and only connects one way. There are 
wires which have ¼ “quick connects attached to the ends as seen
in Figure labeled . Connect these wires as stated below:
 = Blue wire connects to transformer secondary side  or
inline fuse if used.

 = Green wire: Connects to Earth Ground
2. Plug the -pin wiring harness into the ICM2813 as seen in Figure 
location . It only connects one way.
3. Connect the opposite ends of both harnesses labeled & on
Figure to the mating connections of the harnesses on the furnace.
4. Ensure all other connections are wired per wiring diagram.
Figure 3
MOUNTING THE ICM2813
WIRE HARNESS CONNECTIONS

4
Flame not established
1. If the flame is not established or proven during the initial

will enter a retry mode. There will be four more successive
attempts allowed each having a 15 second inducer purge
between attempts.
 
is still not established and proven there will be a 1 hour lock
out before the system will reset automatically. To reset the

on the 24 VAC power to the board. If the problem is not a
false flame, the board can also be reset by cycling the heat

detected when the gas valve is de-energized and there is no
flame), cycling the heat call will not reset the board.
Flame out
1. Flame out is considered when flame is lost during heating.
2. When a W signal is present and flame is lost and no longer
sensed, the gas valves will disengage until the next trial
for ignition. The circulating blower and inducer will remain
running.
3. If all retry attempts fail and the flame is still not proven,
there will be a 1 hour lock out before the system resets
automatically.
False flame
1. Flame out of sequence represents a scenario when flame is
sensed while gas valve is de-energized.
2. Inducer and Blower motors will be engaged (if not already
running) and keep running for as long as the fault condition is
present.
FLAME SENSE TROUBLESHOOTING TIPS
LOCKOUT FEATURES
There is a 5 minute self healing recovery which occurs if the
pressure switch is stuck open. The inducer will run for 150
seconds then enter a 5 minute self healing recovery. This cycle
will repeat until the pressure switch closes.
There will be a 1 hour lock out if the flame is not established and

the control will reset automatically.
LED
Status Description Trouble Shooting Tips
ON Normal
Operation N/A
OFF Control Board
Failure
Check for proper input voltage and
check the fuse; if not resolved replace
control.
1Ignition Failure

Clean or replace the flame sensor,
check the igniter for proper operation &
input voltage, check the transformer’s
common is grounded to earth ground.
2Pressure Switch
Stuck Closed
Check for contaminated or defective
pressure switch.
3Pressure Switch
Stuck Open
Check for obstructed pressure switch
tubing or defective pressure switch.
Check for oxidation on terminals,
broken wires, or defective inducer
motor.
4Limit Switch
Fault
Checked for blocked airflow, blocked

replace high limit switch if defective.
5Flame Out of
Sequence
Check for intermittent or defective gas
valve and check for dirty or defective
flame sensor.
6Roll Out Switch
Fault
Check for a cracked heat exchanger,
defective rollout switch, broken wires
on the roll out switch, or replace roll
out switch if required.
7Weak Flame
Weak flame is caused by carbon build
up on the flame sensor, poor grounds,
or improper placement of flame
sensor . Clean or replace flame sensor,
reassure grounds, ensure flame sensor
is fully enveloped in the flame.
8Miswired Gas
Valve
Check for shorted or miswired gas
valve, check harness wires for any
shorts or breaks, and check the
pressure switch for proper operation.
9Unused N/A
10 Hot and Neutral
Reversed
Check for proper polarity of incoming
voltage on the primary and secondary
of the transformer.
11 Brownout
A brownout fault indicates a low
voltage condition. Check the voltage
on the primary and the secondary of
the transformer and ensure there is no
excessive load on the transformer.
LED FAULT CODES

5
WIRING DIAGRAM
WIRING HARNESS 9 TO 12 PIN WIRING HARNESS 4 TO 6 PIN
T1 T3
T2 T4
T5
HEAT OFF DELAY
60 90 120 180
COOL OFF DELAY
45 2
LED1
HUM
XFRM
LINE
EAC
HEAT
PARK
FAN
COOL
PARK
120 VOLT HOT
FS
ICM2813
24V
ONLY
HUM
L2 120
VAC
L1
NEUTRAL
LINE
INDUCED
DRAFT
MOTOR
NEUTRAL
*See 1A under
Wire Harness
Connections
See NOTE in Install
section on page 2.
LINE
24V SEC
PRI
GND
HSI
BLOWER
MOTOR
BRN
BRN
GRN/YEL
CAP-1
Cool Speed
Heat Speed
Continuous Fan
Flame Sensor
P1 P2
Neutral
PIN 11
PIN 10
PIN 9
PIN 7 PIN 8
PIN 5 PIN 6
PIN 3 PIN 4
PIN 1 PIN 2
24V SEC
PRI
GND
121110987654321
PRS
NOC
RS 1
Chassis
GND
GAS
VALVE
LS
Primary
RS 2
LS 2 LS 2
120 VOLT NEUTRALS
INLINE FUSE*
120 VOLT HOT
DOOR SWITCH

800.365.5525

www.icmcontrols.com
P1 Plug Pin Out
 = High limit output
 = N/A
 =  VAC
 = N/A
 = Rollout switch 1
 =  VAC common
 = High limit input
 = Ground
 = Main Valve common
 = Pressure switch
 = Rollout switch 
 = Main valve
P2 Plug Pin Out
 = Inducer blower
 = Hot surface ignitor
 = Neutral
4 = Neutral
Legend
EAC = Electronic air cleaner
FS = Flame sensor
GND = Ground
HSI = Hot surface ignitor
  
LS = Limit switch
PRI = Primary
PRS = Pressure switch
RS = Rollout switch
SEC = Secondary
XFRM = Transformer
(Limit Switch In)
Connected to Pin 
(Rollout Switch)
 (Gas valve)
 (Pressure Switch)
 (Limit Switch Out)

 (Rollout Switch)
Earth Ground)
Hot Surface Ignitor

Neutral
Inducer Blower

Neutral
 (Limit Switch Out)

input

(Rollout Switch)

Earth Ground)
 (Limit Switch In)
Earth Ground

Earth Ground)
 (Pressure Switch)
 (Rollout Switch)
 (Gas valve)
Inducer Blower
Hot Surface Ignitor
Neutral
Neutral
Chassis
ground Earth ground
P1 Harness (9-Pin End) P2 Harness (6-Pin End)P1 Harness (12-Pin End) P2 Harness (4-Pin End)