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:24VAC(18-30VAC),60Hz
• Line voltage:115VAC,60Hz
• Power consumption:0.3Aplusgasvalvecurrentat24VAC
• Operating temperature:-40°C(-40°F)to75°C(176°F)
Timing
• Pre-purge:30seconds
• Trial for ignition:7seconds
• Retries:Twogroupsoftwo,30secondsdelaywithinthe
groupand3minutesdelaybetweengroups
• Lockout:1hour
• Post-purge:90,120,160and180seconds
Inputs
• Power:24VACandCOM
• Thermostat interface:R,W,YandG
• System switches:VentPressureandLimitswitches
(MainandOver-temperatureswitchesinseries)
• Flame Sensing
• Heat blower OFF delay: SW1toggleswitch
Install New Control
1. Groundyourself.Whenhandlingcircuitboard,holditbytheedges.
2. Fastencircuitboardwithretainingscrews.
3. Connectalllinevoltage,lowvoltage,andaccessorywires.
4. Verifythesequenceofoperation.
Safety Considerations
Onlytrainedpersonnelshouldinstallorserviceheatingequipment.Whenworkingwithheatingequip-
ment,besuretoreadandunderstandallprecautionsinthedocumentation,onlabels,andontags
thataccompanytheequipment.Failuretofollowallsafetyguidelinesmayresultindamagetoequip-
ment,severepersonalinjuryordeath.
Introduction
TheICM292DSIgasignitioncontrolreplacesthefollowingRheemmodel:62-24140-04.TheICM292
hasincorporatedLEDdiagnosticstoassistintroubleshooting.Faultcodeinformationcanbefound
inthisapplicationguide.Pleasekeepthisapplicationguidewiththefurnaceinstallationmanualfor
futurereference.
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. 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.
3. Servicethefurnaceaftertouchingthechassis.Yourbodywillrechargewithstaticelectricityasyou
shufeyourfeetormove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usedandnew
controlsinseparatecontainersbeforetouchingungroundedobjects.
6. ESDdamagecanalsobepreventedbyusinganESDservicekit.
AWcallfromthethermostatwillengagetheInducerDraftmotor.TheVentPressureswitchcloses.
Ignitionsequencebegins,gasvalveandsparkareengaged,providingthatsystemsafetyswitches
(MainandOver-temperatureswitchesinseries)areclosed.TheBlowermotorwillengageatHEAT
speed20secondsafterameisestablishedandsensed.OnWcallsatisfaction,theInducermotor
turnsoffafter10secondsandBlowermotorturnsoffaccordingtoHeatBlowerOffdelaysetting.
AGcallfromthethermostatwillengageBlowermotorwithoutdelayatFANspeed.Itdisengages
withoutdelaywhenGcallisremoved.
AYcallfromthethermostatwillengageBlowermotorwithoutdelayatCOOLspeed.Itdisengages
45secondsafterYcallissatised.
Sequence of Operation
Flame not established
1. Ifameisnotestablishedduringthe7secondinitialsequencethenthecontrolwillstartthenext
trialforignitionin30seconds.
2. Therewillbetwomoreattemptstoigniteafter3minutedelay,30secondsapartbeforethe
respectivefaultcodeistriggeredandignitiontrialsarestopped.
3.Thegasvalveisenergizedonlyduringtheignitionsequenceof7seconds.
4. Blowermotorisoffuntil20secondsafterameisestablished.
Flame out
1. Flameoutisconsideredwhenameislostduringheating.
2. WhenWsignalispresentandameisnotsensed,thengasvalvewilldisengageuntilthenexttrial
forignition
3. Ifameisnotestablishedontheimmediatesequence(2above)thenthecontrolwillcontinuewith
additionaltrialsforignition
4. InducerandBlowermotorswillcontinuerunningduringameoutscenario
Flame out of sequence
1. FlameoutofsequencerepresentsascenariowhenameissensedwhileWsignalisnotpresent.
2. InducerandBlowermotorswillbeengaged(ifnotalreadyrunning)andkeeprunningforaslongas
thefaultconditionispresent.
3.Thereis1hourlockoutbeforeaWcallcanbeexecutedoronpowerreset
Troubleshooting Tips
LED Fault Codes
Outputs
• Spark:SE
• Gas Valve:GV
• Inducer draft motor:IDM
• Blower motor:FAN,COOLand
HEATspeeds
• Electric Air Cleaner:EAC
• Humidier 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), humidier (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 Normaloperation
1Flash Ignitionfailure(4trials)
2Flashes Pressureswitchstuckopen
3Flashes Limitswitchesopen
4Flashes Pressureswitchstuckclosed
5Flashes Twinfault
6Flashes Brownoutvoltage
7Flashes Hotandneutralreversedornoground
Continuous Gasvalverelayshort
YELLOW RapidBlink Flameoutofsequence
SlowBlink Lowameornoame
ON Flamepresent
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. 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.
CAUTION:Failure to turn off gas and electric supplies can result in explosion, re, death, or
personal injury.
4. Removefurnaceblowerandcontrolaccessdoors.
5. Disconnectthermostatwiresandhumidierwires(ifequippedwithahumidier).
6. Disconnectlinevoltage,blower,electronicaircleanerwires(ifequipped),andtransformerwires.
7. Removescrewsandanyotherfasteners,andtheoldcircuitboard.
8. Examinecontrolandcontrolboxtocheckforwaterstains.
9. Makerepairsifanysourcesofwaterleakagearefound.Besuretocheckhumidiers,evaporator
coils,andventsystemsintheareaofthecontrol.

ICM Controls ICM292 Specifications

General

Brand	ICM Controls
Model	ICM292
Category	Control Unit
Language	English