Harman Super Magnum Coal Stoker - Troubleshooting; Troubleshooting Common Issues

23
Do Not Burn Wet Coal!
Super-Magnum Coal Stoker Stove
3-90-02702R8_11/13
Symptom Possible Cause Corrective Action
WithProperinstallation,operation,andmaintenance,yourappliancewillprovideyearsoftrouble-freeservice.Ifyoudo
experienceaproblem,thistroubleshootingguidewillassistaqualiedpersoninthediagnosisofaproblemandthecorrective
actiontobetaken.Thistroubleshootingguideisintendedforusebyqualiedservicetechniciansonly.
Pluginappliance-No
response.
Nocurrenttooutlet.
Defectivepowercord/connection.
Defectivefuseoncircuitboard.
Circuitboarddefective.
Checkcircuitbreakeratservicepanel.
Re-connectorreplacepowercord.
Replace6ampfuseonboard.
Replacecircuitboard.
Fireout,nofuelongrates. Outoffuel.
Wetcoalbridgedinhopper.
Foreignobjectobstruction-Hopper.
Foreignobjectobstruction-Feeder.
Feedsystemmalfunction.
Checkhopper.Fillwithfuel.
Donotloadwetcoalinhopper.
Emptythehopper,searchingforobject.
Withhopperemptyexaminefeedthroat.
Verifyoperationofmotor,pusherarm,and
pusherblock.
Fireout,gratesfulloffuel. Combustionblowerrestrictorclosed.
Combustionblowerpositioning.
Ashbuild-upundergrates.
Failedstartingprocess.
ESPfailure-temponDDMreadsabnor-
mallyhighwhenstoveiscold.
Re-setrestrictorusingdraftmeter.
Besurethattheblowerisinitsmount.
Removegratesandcleanairchamber.
Followstartupprocedure.
ReplaceESP.
Unburnedorpartiallyburned
coal in ash pan.
Blackrocksincoal.
Feedratetoohigh.
Try different coal.
Setfeedadjustertolowersetting.
Coalpushingoutthesidesof
thegrateframe.
Clinkersinashesrestrictingowoffuel
overtheburngrates.
Re-setrestrictorusingdraftmeter.Toomuch
airowwillcausetheashestofusetogether.
Wetcoalwillnotowproperly.
Excessivenesinnestray. Dirtycoalsupply.
Feedrestrictioncausinggrinding.
Finesscraperadjustment.
Try different coal.
Removecoalfromhopperandcheckfora
foreignobjectorlargepieceofcoal.
Re-adjustscraper(SeePage29).
Turnedto"OFF"won'tshut
down.
Notenoughtimeallowed.
DirtyorfailedESP.
Modeselectornottrulyinthe"OFF"
position.
Shut-downsequence:Minimumfeeduntil
ESPcools.Combustionblowershouldbeoff
unlessreisatmaximumtemp.
Removeandcleanprobe.
AttachDDMtomonitortemperatureand
shut-downparameters.
Thestatuslightwillturnoffwhentheknob
isinthe"OFF"position.(unlessthereisa3
blinkerrorcode.)
DistributionBlowernotoperat-
ing.
RoomTemperaturedemandmet.
Insuccessfulignition.
Uponmeetingtheroomtemperatureset-
point,theblowerwillstop.
Also,thedistributionblowerwillnotrununtil
theESPsensesahighenoughtemperature
toensurethatthedischargedairiswarm.
9
Troubleshooting
Contact your dealerforadditionalinformationregardingoperationandtrouble-shooting.Visitwww.harmanstoves.comto
ndadealer.