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A.O. Smith 310 - TROUBLESHOOTING; PRELIMINARY CHECKLIST

A.O. Smith 310
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Troubleshootingξ˜ƒGuideξ˜ƒ
7|ξ˜ƒPageξ˜ƒ
ξ˜ƒ
ξ˜ƒ
5.ξ˜ƒTROUBLESHOOTINGξ˜ƒ
5.1ξ˜ƒPRELIMINARYξ˜ƒCHECKLISTξ˜ƒ
Checkξ˜ƒallξ˜ƒofξ˜ƒtheseξ˜ƒbasicξ˜ƒitemsξ˜ƒbeforeξ˜ƒproceedingξ˜ƒontoξ˜ƒanyξ˜ƒotherξ˜ƒsection:ξ˜ƒ
β€’ GAS/WATER/ELECTRIC:ξ˜ƒξ˜ƒ
o Theξ˜ƒgasξ˜ƒsupplyξ˜ƒvalveξ˜ƒshouldξ˜ƒbeξ˜ƒfullyξ˜ƒopen.ξ˜ƒ
o Verifyξ˜ƒtheξ˜ƒcorrectξ˜ƒgasξ˜ƒtypeξ˜ƒisξ˜ƒbeingξ˜ƒused,ξ˜ƒNGξ˜ƒorξ˜ƒLP.ξ˜ƒ
o Theξ˜ƒwaterξ˜ƒsupplyξ˜ƒvalveξ˜ƒshouldξ˜ƒbeξ˜ƒfullyξ˜ƒopen.ξ˜ƒξ˜ƒ
o Theξ˜ƒunitξ˜ƒshouldξ˜ƒbeξ˜ƒconnectedξ˜ƒ
toξ˜ƒaξ˜ƒ120ξ˜ƒVACξ˜ƒ60ξ˜ƒHzξ˜ƒpowerξ˜ƒsupply.ξ˜ƒξ˜ƒThisξ˜ƒcanξ˜ƒbeξ˜ƒverifiedξ˜ƒbyξ˜ƒ
observingξ˜ƒtheξ˜ƒcomputerξ˜ƒboardξ˜ƒ3‐digitξ˜ƒLEDξ˜ƒdisplay.ξ˜ƒξ˜ƒIfξ˜ƒitξ˜ƒisξ˜ƒnotξ˜ƒlit,ξ˜ƒtheξ˜ƒcomputerξ˜ƒboardξ˜ƒisξ˜ƒ
notξ˜ƒbeingξ˜ƒpowered.ξ˜ƒξ˜ƒCheckξ˜ƒtoξ˜ƒseeξ˜ƒifξ˜ƒtheξ˜ƒON/OFFξ˜ƒswitchξ˜ƒbelowξ˜ƒtheξ˜ƒfuseξ˜ƒboxξ˜ƒisξ˜ƒsetξ˜ƒtoξ˜ƒtheξ˜ƒ
onξ˜ƒposition,ξ˜ƒor
ξ˜ƒifξ˜ƒtheξ˜ƒfuseξ˜ƒinξ˜ƒtheξ˜ƒfuseξ˜ƒboxξ˜ƒisξ˜ƒblown.ξ˜ƒξ˜ƒ
β€’ REMOTE:ξ˜ƒξ˜ƒIfξ˜ƒyouξ˜ƒareξ˜ƒusingξ˜ƒaξ˜ƒremoteξ˜ƒcontroller,ξ˜ƒtheξ˜ƒremote’sξ˜ƒpowerξ˜ƒbuttonξ˜ƒmustξ˜ƒbeξ˜ƒturnedξ˜ƒon.ξ˜ƒξ˜ƒ
β€’ HIGHξ˜ƒALTITUDE:ξ˜ƒξ˜ƒIsξ˜ƒyourξ˜ƒlocationξ˜ƒatξ˜ƒanξ˜ƒaltitudeξ˜ƒofξ˜ƒoverξ˜ƒ3000ξ˜ƒfeet?ξ˜ƒThisξ˜ƒmayξ˜ƒcauseξ˜ƒaξ˜ƒlack ξ˜ƒofξ˜ƒair.ξ˜ƒξ˜ƒ
Seeξ˜ƒtheξ˜ƒhighξ˜ƒaltitudeξ˜ƒ
procedureξ˜ƒinξ˜ƒtheξ˜ƒTroubleshootingξ˜ƒProceduresξ˜ƒsection.ξ˜ƒ
β€’ HARDξ˜ƒWATER:ξ˜ƒξ˜ƒWhatξ˜ƒisξ˜ƒtheξ˜ƒhardnessξ˜ƒofξ˜ƒtheξ˜ƒwater?ξ˜ƒξ˜ƒAξ˜ƒsoftenerξ˜ƒisξ˜ƒalwaysξ˜ƒrecommended,ξ˜ƒbutξ˜ƒifξ˜ƒ
theξ˜ƒwaterξ˜ƒisξ˜ƒaboveξ˜ƒ7ξ˜ƒgrainsξ˜ƒofξ˜ƒhardnessξ˜ƒorξ˜ƒ70‐140ppm,ξ˜ƒoneξ˜ƒmustξ˜ƒbeξ˜ƒinstalled.ξ˜ƒξ˜ƒIfξ˜ƒthereξ˜ƒisξ˜ƒnoξ˜ƒ
waterξ˜ƒsoftenerξ˜ƒinstalled,ξ˜ƒexistingξ˜ƒinstallationsξ˜ƒwillξ˜ƒgraduallyξ˜ƒaccumulateξ˜ƒ
scaleξ˜ƒbuildupξ˜ƒonξ˜ƒtheξ˜ƒ
heatξ˜ƒexchangerξ˜ƒandξ˜ƒcauseξ˜ƒaξ˜ƒleak.ξ˜ƒξ˜ƒHeatξ˜ƒexchangerξ˜ƒfailuresξ˜ƒdoξ˜ƒtoξ˜ƒhardξ˜ƒwaterξ˜ƒscaleξ˜ƒareξ˜ƒnotξ˜ƒ
coveredξ˜ƒunderξ˜ƒtheξ˜ƒwarranty.ξ˜ƒ
β€’ NEWξ˜ƒINSTALLATIONS:ξ˜ƒξ˜ƒIsξ˜ƒthisξ˜ƒinstallationξ˜ƒaξ˜ƒfewξ˜ƒyearsξ˜ƒoldξ˜ƒorξ˜ƒbrandξ˜ƒnew?ξ˜ƒξ˜ƒξ˜ƒ
o Aξ˜ƒunitξ˜ƒthatξ˜ƒhasξ˜ƒworkedξ˜ƒproperlyξ˜ƒforξ˜ƒaξ˜ƒwhileξ˜ƒbutξ˜ƒisξ˜ƒnowξ˜ƒstruggling
ξ˜ƒmayξ˜ƒhaveξ˜ƒbecomeξ˜ƒ
scaledξ˜ƒupξ˜ƒorξ˜ƒcontainsξ˜ƒaξ˜ƒdirtyξ˜ƒburner.ξ˜ƒ
o Aξ˜ƒnewξ˜ƒinstallationξ˜ƒmostξ˜ƒlikelyξ˜ƒisξ˜ƒinstalledξ˜ƒorξ˜ƒplumbedξ˜ƒincorrectly.ξ˜ƒ
β€’ EXTERNALξ˜ƒPROBLEM:ξ˜ƒξ˜ƒTestξ˜ƒwhetherξ˜ƒtheξ˜ƒproblemξ˜ƒisξ˜ƒwithinξ˜ƒtheξ˜ƒunitξ˜ƒorξ˜ƒexternalξ˜ƒtoξ˜ƒtheξ˜ƒunitξ˜ƒ(i.e.ξ˜ƒinξ˜ƒ
theξ˜ƒplumbingξ˜ƒsystem)ξ˜ƒbyξ˜ƒattemptingξ˜ƒtoξ˜ƒrunξ˜ƒhotξ˜ƒwaterξ˜ƒlocallyξ˜ƒthroughξ˜ƒ
theξ˜ƒpressureξ˜ƒreliefξ˜ƒvalveξ˜ƒ
(PRV).ξ˜ƒξ˜ƒξ˜ƒ
o Doesξ˜ƒtheξ˜ƒheaterξ˜ƒigniteξ˜ƒandξ˜ƒremainξ˜ƒrunningξ˜ƒproperly? ξ˜ƒξ˜ƒOrξ˜ƒdoesξ˜ƒtheξ˜ƒheaterξ˜ƒshutξ˜ƒdownξ˜ƒintoξ˜ƒ
anξ˜ƒerrorξ˜ƒcode?ξ˜ƒξ˜ƒIfξ˜ƒitξ˜ƒrunsξ˜ƒfineξ˜ƒthroughξ˜ƒtheξ˜ƒPRVξ˜ƒtheξ˜ƒplumbingξ˜ƒsystemξ˜ƒisξ˜ƒatξ˜ƒfault.ξ˜ƒ
ξ˜ƒ
ξ˜ƒ
NEXTξ˜ƒSTEP:ξ˜ƒξ˜ƒFinally,ξ˜ƒcheckξ˜ƒtoξ˜ƒseeξ˜ƒifξ˜ƒtheξ˜ƒunitξ˜ƒhasξ˜ƒanξ˜ƒerrorξ˜ƒcode.
ξ˜ƒξ˜ƒTheξ˜ƒerrorξ˜ƒcodeξ˜ƒwillξ˜ƒbeξ˜ƒdisplayedξ˜ƒonξ˜ƒtheξ˜ƒ
sevenξ˜ƒsegmentξ˜ƒLEDξ˜ƒonξ˜ƒtheξ˜ƒbottomξ˜ƒleftξ˜ƒofξ˜ƒtheξ˜ƒcomputerξ˜ƒboard.ξ˜ƒξ˜ƒSeeξ˜ƒfiguresξ˜ƒ4ξ˜ƒandξ˜ƒ5.ξ˜ƒ
β€’ Ifξ˜ƒitξ˜ƒisξ˜ƒdisplayingξ˜ƒanξ˜ƒerrorξ˜ƒcode,ξ˜ƒproceedξ˜ƒtoξ˜ƒtheξ˜ƒErrorξ˜ƒCodesξ˜ƒsectionξ˜ƒ(p.ξ˜ƒ12).ξ˜ƒ
β€’ Ifξ˜ƒthereξ˜ƒisξ˜ƒnoξ˜ƒerrorξ˜ƒcode,ξ˜ƒproceedξ˜ƒtoξ˜ƒtheξ˜ƒ
Generalξ˜ƒProblemsξ˜ƒsectionξ˜ƒ(p.ξ˜ƒ8).ξ˜ƒ
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