A.O. Smith BL-80 - Troubleshooting Guidelines; Water Leaks and T&P Valve Issues; Pilot and Burner Issues; Hot Water and Sound Issues

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TROUBLESHOOTING GUIDELINES
Theseguidelinesshouldbeutilizedbyaqualiedserviceagent.
 Problem Cause Solution
WATER LEAKS
Improperlysealed,hotorcoldsupplyconnection,relief
valve,drainvalve,orthermostatthreads.
Tightenthreadedconnections.
Leakagefromotherappliancesorwaterlines. Inspectotherappliancesnearwaterheater.
Condensationofueproducts. RefertoCONDENSATION.
LEAKING T&P VALVE
Thermalexpansioninclosedwatersystem. Installthermalexpansiontank(DONOTplugT&Pvalve).
Improperlyseatedvalve.
Checkreliefvalveforproperoperation
(DONOTplugT&Pvalve).
SMELLY WATER
Highsulfateormineralcontentinwatersupply. Drainandushheaterthoroughly,thenrell.
Bacteriainwatersupply. Chlorinate or aerate water supply.
PILOT WILL NOT LIGHT
Gascontrolknobnotpositionedcorrectly. RefertoLIGHTINGINSTRUCTIONS.
Maingassupplyoff. Turnonmaingasshutoffvalve.
Thermocouplemalfunction. Replacepilotassemblyand/orthermocouple.
BURNER WILL NOT
STAY LIT
Thermocouplemalfunction. Replacepilotassemblyand/orthermocouple.
DefectiveGasControl. ReplaceGasControl.
PILOT OUTAGE
Dirty pilot burner. Cleanpilotassembly.
Thermocouplemalfunction. Replacepilotassemblyand/orthermocouple.
DefectiveGasControl. ReplaceGasControl.
Thermocoupletipisnotincontactwithpilotame. Insertthermocouplecorrectly.
NOT ENOUGH
HOT WATER
Heaternotlitorthermostatnoton. RefertoLIGHTINGINSTRUCTIONS.
Thermostatsettoolow. RefertoTEMPERATUREREGULATION.
Heater undersized. Reducehotwateruse.
Lowgaspressure. Contactyourgassupplier.
Incomingwaterisunusuallycold. Allowmoretimeforheatertore-heat.
Leakinghotwaterpipesorxtures. Haveplumbercheckandrepairleaks.
Hightemperaturelimitswitchactivated. Contactaservicetechniciantodeterminecause.
WATER TOO HOT Thermostatsettoohigh. RefertoTEMPERATUREREGULATION.
WATER HEATER SOUNDS Condensationdrippingonburner. RefertoCONDENSATION.
SIZZLINGOR
RUMBLING
Sedimentorcalciuminbottomofheatertank.
Cleansedimentfromtank.RefertoDRAINING
instructionsinMaintenancesectionofmanual.
SOOTING Impropercombustion.
Noadjustmentavailable.Contactaservice
techniciantodeterminecause.
VENT GAS ODORS
Lackofsupplyair.
Contactaservicetechniciantodeterminecause.
Improperlyinstalledventpiping.
Downdraft.
Poorcombustion.