USSC 5660 - Troubleshooting; Ignition and Startup Problems

34
TROUBLESHOOTING
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Seefigure26,page31,forcomponentlocations.
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Theheaterwillnotlight:
 Checkthattheheaterispluggedinandthatthewalloutlethaspower.
 UnplugtheunitthencheckallelectricalconnectionsagainsttheWiringDiagraminthismanual.
 Checkthefuseonthecircuitboard.
 Ifathermostatisused,ensureitiscallingforheat.
 Ifyourheaterstilldoesnotlight,contactyourlocaldealerforservice.
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Theheaterwillnotoperatewhenhot.
 Checkthatthefuelhopperhasenoughpellets.
 Checkthatthecombustionairinletisnotblocked.Insufficientair supplymaycausethefiretoburn
coldandmaycausefuelbuildup,inthepot,andsmotherthefire.
 Check that the exhaust fan is operating. If the fan is not operating properly, it may not generate
enoughvacuuminthefirebox.
 Checkthe200°Fhighlimitswitch.Thisswitchismanuallyreset.Checkifithastripped.Ifso,letcool
andresetswitch.Checkforcauseof overheating.Ifswitchtrips again,contactyour localdealerfor
service
 CheckthevacuumswitchbyshortingoutthevacuumswitchthendepressON/OFFbuttonto"OFF"
andbackto“ON”.Iftheunitstartstooperatechangethevacuumswitch.
 Checktheexhausttemperatureswitch(locatedontheexhaustblower)byshorting outthe exhaust
temperature switch then depress ON/OFF button  to "OFF" and back to “ON”. If the unit starts to
operatechangetheexhausttemperatureswitch.
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Exhaustblowerdoesnotoperatenormally.
 Checkallwiringconnections.
 Apply120voltsdirectlytotheexhaustblower.Iftheblowerdoesnotrunreplacetheblower.
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Circulationblowerdoesnotoperatenormally.
 Checkallwiringconnections
 Apply120voltsdirectlytothecirculationblower.
Iftheblowerdoesnotrun,replacetheblower.
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Igniterwillnotlightfuel.
 Checkelectricalconnections(includingfuse)totheigniter
 Check that the igniter  tube, which touches the burn pot, is not plugged with ash. If it is plugged
removethedebris(besuretowaituntileverythinghascooledtoroomtemperature)
 Checktoseethatburnpotisinstalledcorrectly(seepage29)
 Ifigniterstilldoesnotwork,replaceit.
Note:Theignitershouldbeglowingorangewheninoperation.
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