ICM Controls ICM292 User manual

7313 William Barry Blvd.
North Syracuse, NY 13212
ICM CONTROLS 800.365.5525
www.icmcontrols.com LIAF107-1
FEATURES SPECIFICATIONS
ICM292
Gas Ignition Control Board
• Control voltage:24VAC(18-30VAC),60Hz
• Line voltage:115VAC,60Hz
• Power consumption:0.3Aplusgasvalvecurrentat24VAC
• Operating temperature:-40°C(-40°F)to75°C(176°F)
Timing
• Pre-purge:30seconds
• Trial for ignition:7seconds
• Retries:Twogroupsoftwo,30secondsdelaywithinthe
groupand3minutesdelaybetweengroups
• Lockout:1hour
• Post-purge:90,120,160and180seconds
Inputs
• Power:24VACandCOM
• Thermostat interface:R,W,YandG
• System switches:VentPressureandLimitswitches
(MainandOver-temperatureswitchesinseries)
• Flame Sensing
• Heat blower OFF delay: SW1toggleswitch
Install New Control
1. Groundyourself.Whenhandlingcircuitboard,holditbytheedges.
2. Fastencircuitboardwithretainingscrews.
3. Connectalllinevoltage,lowvoltage,andaccessorywires.
4. Verifythesequenceofoperation.
Safety Considerations
Onlytrainedpersonnelshouldinstallorserviceheatingequipment.Whenworkingwithheatingequip-
ment,besuretoreadandunderstandallprecautionsinthedocumentation,onlabels,andontags
thataccompanytheequipment.Failuretofollowallsafetyguidelinesmayresultindamagetoequip-
ment,severepersonalinjuryordeath.
Introduction
TheICM292DSIgasignitioncontrolreplacesthefollowingRheemmodel:62-24140-04.TheICM292
hasincorporatedLEDdiagnosticstoassistintroubleshooting.Faultcodeinformationcanbefound
inthisapplicationguide.Pleasekeepthisapplicationguidewiththefurnaceinstallationmanualfor
futurereference.
Electrostatic Discharge (ESD) Precautions
CAUTION!
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. Disconnectallpowertothefurnace.Donottouchthecontrolorthewiringpriortodischargingyour
body’selectrostaticchargetoground.
2. Togroundyourself,touchyourhandandtoolstoaclean,metal(unpainted)furnacesurfacenear
thecontrolboard.
3. Servicethefurnaceaftertouchingthechassis.Yourbodywillrechargewithstaticelectricityasyou
shufeyourfeetormovearound,andyoumustregroundyourself.
4. Regroundyourselfifyoutouchungroundeditems.
5. Beforehandlinganewcontrol,regroundyourself;thiswillprotectthecontrol.Storeusedandnew
controlsinseparatecontainersbeforetouchingungroundedobjects.
6. ESDdamagecanalsobepreventedbyusinganESDservicekit.
AWcallfromthethermostatwillengagetheInducerDraftmotor.TheVentPressureswitchcloses.
Ignitionsequencebegins,gasvalveandsparkareengaged,providingthatsystemsafetyswitches
(MainandOver-temperatureswitchesinseries)areclosed.TheBlowermotorwillengageatHEAT
speed20secondsafterameisestablishedandsensed.OnWcallsatisfaction,theInducermotor
turnsoffafter10secondsandBlowermotorturnsoffaccordingtoHeatBlowerOffdelaysetting.
AGcallfromthethermostatwillengageBlowermotorwithoutdelayatFANspeed.Itdisengages
withoutdelaywhenGcallisremoved.
AYcallfromthethermostatwillengageBlowermotorwithoutdelayatCOOLspeed.Itdisengages
45secondsafterYcallissatised.
Sequence of Operation
Flame not established
1. Ifameisnotestablishedduringthe7secondinitialsequencethenthecontrolwillstartthenext
trialforignitionin30seconds.
2. Therewillbetwomoreattemptstoigniteafter3minutedelay,30secondsapartbeforethe
respectivefaultcodeistriggeredandignitiontrialsarestopped.
3.Thegasvalveisenergizedonlyduringtheignitionsequenceof7seconds.
4. Blowermotorisoffuntil20secondsafterameisestablished.
Flame out
1. Flameoutisconsideredwhenameislostduringheating.
2. WhenWsignalispresentandameisnotsensed,thengasvalvewilldisengageuntilthenexttrial
forignition
3. Ifameisnotestablishedontheimmediatesequence(2above)thenthecontrolwillcontinuewith
additionaltrialsforignition
4. InducerandBlowermotorswillcontinuerunningduringameoutscenario
Flame out of sequence
1. FlameoutofsequencerepresentsascenariowhenameissensedwhileWsignalisnotpresent.
2. InducerandBlowermotorswillbeengaged(ifnotalreadyrunning)andkeeprunningforaslongas
thefaultconditionispresent.
3.Thereis1hourlockoutbeforeaWcallcanbeexecutedoronpowerreset
Troubleshooting Tips
LED Fault Codes
Outputs
• Spark:SE
• Gas Valve:GV
• Inducer draft motor:IDM
• Blower motor:FAN,COOLand
HEATspeeds
• Electric Air Cleaner:EAC
• Humidier relay:HUM
• Heat/Cool relay:H/C
LED indicators
• Power, green LED:PWR
• Status, green LED:OK
• Flame status, yellow LED:FLAME
• Direct Spark Ignition (DSI) control board
• Microprocessor-based
• Controls inducer motors, air cleaner (if equipped), humidier (if
equipped), spark ignitor and the gas valve
• Monitors timing, trial for ignition, system switches, ame sensing
and lockout
• 100% lockout safety feature
• Compatible with LP or Natural Gas
• LED indication for status and fault codes to aid in troubleshooting
• Replaces: Rheem 62-24140-04
LEDS Flashes Fault condition
GREEN ON Normaloperation
1Flash Ignitionfailure(4trials)
2Flashes Pressureswitchstuckopen
3Flashes Limitswitchesopen
4Flashes Pressureswitchstuckclosed
5Flashes Twinfault
6Flashes Brownoutvoltage
7Flashes Hotandneutralreversedornoground
Continuous Gasvalverelayshort
YELLOW RapidBlink Flameoutofsequence
SlowBlink Lowameornoame
ON Flamepresent
CAUTION!
To service control, and prior to disconnection, label all wires. Failure to do so may result in wiring
errors that can cause dangerous operation.
Remove Existing Control
1. TurnthermostattoOFFpositionorsetittothelowestpossiblesetting.
2. TurnOFFelectricalsupplytofurnace.
3. TurnOFFgassupplytofurnace.
CAUTION:Failure to turn off gas and electric supplies can result in explosion, re, death, or
personal injury.
4. Removefurnaceblowerandcontrolaccessdoors.
5. Disconnectthermostatwiresandhumidierwires(ifequippedwithahumidier).
6. Disconnectlinevoltage,blower,electronicaircleanerwires(ifequipped),andtransformerwires.
7. Removescrewsandanyotherfasteners,andtheoldcircuitboard.
8. Examinecontrolandcontrolboxtocheckforwaterstains.
9. Makerepairsifanysourcesofwaterleakagearefound.Besuretocheckhumidiers,evaporator
coils,andventsystemsintheareaofthecontrol.

Typical Wiring Diagram
7
1
4
2
5
6
3
8
9
7
1
4
2
5
6
3
8
0
BL
Y
BR
PR
R
R9
7
1
4
2
5
6
3
8
9G
R/W
PR
BR
R
R/W
G
MRLCLC MRLC
MRLC
R
R
Overtemperature Switches
(3-Maximum)
Main Limit
Control
NPC
GPR
Vent System
Pressure Switch
Drain System
Pressure Switch
NPC
BLMV BL
Y
G
MV
GND
GND
M
P
C
1
2
3
BL
Y
Honeywell
Gas Valve
White
Rogers
C RY WG
G Y W R
G Y W R
TH
LT OK
LT FLAME
LT PWR
24 VAC
24 VAC
Y
CT
X
2.0 AMP
Slowblow
Fuse
FU
P1
Integrated
Furnace Control
M2
M1
Heat/Cool
Fan
Cool
Heat
EACEAC L1Neutrals
R
BL
Y
BK BR
BR
M-HI
M-LO
LO
HI
IBM
COM
RC
IBM
BK
W
XFWR-PR1
W
W
W
32 41
32 41 4-Pin Connector P-8
G
G
FU
B K
PBS (Blower Door Switch)
Junction Box
N
H
DISC
To 115/1/60
Power Supply
G
W
BK
G
GND
3
2
43
4
1
6
53
2
4
1
6
5
3
4
6
53
4
6
5BK
W
BR/W
BK
W
BR/W
BR/W
BR/W
RCIDM
6-Pin
Connector
P-4 2-Pin
Connector
P-2
IDM
4-Pin
Connector
P-9
P-2
9-Pin
Connector
P-1
Flame Sensor
9-Pin
Connector
P-5
GND
SE
To CC
Unused Motor
Lead(s) 3
2.0 AMP
Slowblow Fuse CT
FU
GND
LC
MRLC MRLC
MRLC
P5-8 P1-8
P5-3 P1-3
P5-6 P1-6
P5-5
P1-4
P1-5
GVR
NPC
NPC
CR YW G
GND
MGV
P5-4
BR
FR
HCR
IDR
HUM
GVR
FLMS
GND
SE
P5-7
P1-7
IFC
24 VAC
L1
24 VAC
115 VAC NEU
COM
P9-4 P2-2P4-4
P8-1
P8-2
NEU
P9-3P4-3P2-1
IDR
GND
NEU
IBM
IDM
GND
GND
P4-5
P9-2
P4-6
P9-1
RC
RC
GND
PBS
M2
HCR
Heat
Fan
FR
HUM
BR
EAC
Heat/Cool
Cool
P8-3
FU
H N
To 115/1/60
Power Supply
DISC or CB
L1
P1-9
Notes:
1. Iffactorywiringofheatingand
coolingspeedsisnotdesirable,
refertospecicationssection
forappropriatespeeds.
2. Connectunusedmotorleadsto
M1and/orM2.
3. Modelswith3speedmotors;
•Blueleadisformediumspeed
•Noyellowleadonmotor
Legend:
ALC Aux.LimitControl(Temp)
BR BlowerRelay
CC CompressorContactor
CT ControlTransformer
DISC DisconnectSwitch
EAC ElectricAirCleaner
FR FanRelay
FLMS FlameSensor
FU Fuse
GND Ground
GVR GasValveRelay
HCR Heat/CoolRelay
HUM HumidierRelay
IBM IndoorBlowerMotor
IDM IndoorDraftMotor
IDR IndoorDraftRelay
IFC IntegratedFurnaceControl
IR IgnitionRelay
LC LimitControl
MGV MainGasValve
MRLC MainResetLimitControl
MV MainValve
NPC NegativePressureControl
PBS PushButtonSwitch
PL Plug
RC RunCapacitor
SE SparkIngitionElectrode
TH Thermostat(H/C)
WireNut
Wiring Information:
LINEVOLTAGE
•Factorystandard
•FactoryOption
•FieldInstalled
LOWVOLTAGE
•Factorystandard
•FactoryOption
•FieldInstalled
REPLACEMENTWIRE
•Mustbethesamesizeandtypeof
insulationasoriginal(105C*Min.)
WARNING
•Cabinetmustbepremanently
groundedandconformtoI.E.C.,
N.E.C,C.E.C,andlocalcodes
Wire Color Codes:
BK Black
BR Brown
BL Blue
G Green
GY Gray
Electrical Wiring Diagram:
•UpowBlowerInducedDraft
•GasFiredForcedAirFurnace
•SingleStageHeat
•SingleStageCool
•DirectSparkIgnition
O Orange
PR Purple
R Red
W White
Y Yellow
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