A.O. Smith 310 - ERROR CODE 031 INCORRECT DIPSWITCH SETTINGS; ERROR CODE 111 IGNITION FAILURE

TroubleshootingGuide
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ERRORCODE031[510(T‐D2)],ONEFLASH/03[110(T‐KJR 2),310(T‐K4)]
INCORRECTDIPSWITCHSETTINGS
1) Turnoffthepowersupply.
2) Removefrontcoverandlocatethedips witchesonthecenterofthecomputerboard.
3) Checkthedipswitchsettingsontheleftandrightbanks.Refertop.19forthecorrectdipswitch
positions.
a. Gastypeisacommondipswitcherror.
b. Mostotherswitchesshouldbeondefault
settingUNLESStheparticularsetuprequires
otherwise.
c. Easy‐Linksystems:Themasterheatershallhavethenumber10dipswitchontherightbankin
theONposition(left).Theremainingheaters(theslaveheaters)willhavethenumber10
dipswitchintheOFFposition(right)andthecommunicationwireswill
beattachedtotheslave
in/outplugs.
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ERRORCODE101[510(T‐D2)],FIVE FLASHES/10[110(T‐KJR2),310(T‐K4)]
ABNORMALCOMBUSTION
1) Blockageintheairway.Checkthefollowingareas:
a. Ventinglengthobstruction(Birds’nests,trash,etc.)
b. Backflowpreventerinstalledbackwards
c. Heatexchanger
d. Fan
2) Checkthemanifoldpressure(p.22).Adjustthemanifoldpressuretothecorrectvaluesifnecessary.
3) Ifintakeairiscontaminatedwith
dust,lint(laundrymachinenearby),grease(kitchens),orother
contaminants,cleantheburner.Seep.26onproceduresforcleaningtheburner&rodassembly.
4) Weatherrelatedissues:highwinds,frozenventterminationflap,etc.
5) Installationsataltitudesaroundorover3000feet:Changedipswitchesonthecomputer
boardfor
FM+modes.Seedipswitch explanationsonpage19.
6) Makesurealldipswitchesaresetproperlyforthetypeofinstallation.
7) Ifthecauseofthe101errorcodehasbeendeterminedandsolved,resetthecomputerboardto
cleartheerrorcode(p.23).
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ERRORCODE111[510(T‐D2)],THREEFLASHES/11(110[T‐KJR2),310(T‐K4)]
IGNITIONFAILURE
Heaterdoesnotfireafterthreefailedattemptsatignition.
1) Verifythatthehi‐limitswitchisnottripped.Turnthe
powerofftotheunit.Pushthewhitebuttonin.The
switchwillresetwhenyouhearandfeelthebuttonclick.
Turnthepowerbackonandtest
theheater.Iftheunit
fireson,thecauseofthehi‐limittripmustbedetermined.
PleasecontacttheTechnicalServiceDepartmentfor
furthertechnicalsupport.
2) Checkthegassupply.Verifythatsufficientgasisbeing
suppliedtotheheaterandthegaslineisclearofdebris
or
anyair.Purgethelineofairifneeded(p.22).
a. Itispossiblethereisafaultypressureregulatoratthe
Figure6