A.O. Smith 197835-001 Water Heater User Manual


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PROBLEMS
NOT ENOUGH HOT WATER
1.)Blowerwillnotrun.
a.“ON/OFF”controlswitchturnedoff. Turnswitchtothe“ON”position.
b.Blowerunplugged. Plugblowerbackinto115VACoutlet.
c.Nopoweratoutlet. Repairservicetooutlet.
d.Thermostatdefective. Replacethermostat.
e. Control harness defective. Replacecontrolharness.
f.Highlimitcontrolcircuitopen.
Reducethewatertemperaturebelow140°F.
Turnthepowerswitchtotheoffposition.
Wait10seconds.Turnthepowerswitchto
theonposition.Reducethe
temperatureset
pointtominimizelikelihoodofreoccurrence.
If
thisdoesnotsolvetheproblem,replacethe
thermostat.
g.Blowermotordefective. Replaceblowerassembly.
2.)Thermostatproblems
a.Thermostatsettoolow. Adjusttemperaturecontrolhigher.
b.ThermostatorECOdefective Replacethermostat.
3.)Others
a.Heaterundersized.. Reduce hot water use.
b.Lowgaspressure Contact dealer.
c.Incomingwaterisusuallycold. Allowmoretimeforheatertoreheat.
d.Leakinghotwaterpipesoffixtures. Haveplumbercheckandrepairleaks.
e.Heaternotlitorthermostatnoton. Refer to LIGHTING INSTRUCTIONS.
VENT PIPE TOO HOT (ABOVE 170°F [77°C]) Wrongburnerorice. Turnoffheaterandgas,cleanburnerhead.
YELLOW FLAME
Dirtinburnerports. Turnoffheaterandgas,cleanburnerhead.
Combustionairpathrestricted.
Checkexhaustventingandairopenings
inbottombase pan for obstructionsor
blockage.
CONDENSATION Waterontheoorunderheater. See CONDENSATION section.
WATER LEAKS
Improperly sealed,hot orcoldsupply
connections, relief valve, drain valve or
thermostatthreads.
Checkforleaks.SeeFigure1.
Leakagefromotherappliancesorwaterlines.
Inspectotherappliancesnearwaterheater.
Condensationofueproducts. Refer to CONDENSATION section.
LEAKING T & P
Thermalexpansioninclosedwatersystem.
Installthermalexpansiontank(Donotplug
T&Pvalve).
Improperlysealedvalve.
Checkreliefvalveforproperoperation(Do
notplugT&Pvalve).
HOT WATER ODORS
(refer to cathodic protection)
Highsulfateormineralcontentinwater
supply.
Drainandushheaterthoroughlythenrell.
Bacteriainwatersupply. Chlorinatewatersupply.
HOT WATER TOO HOT Thermostatsettoohigh.
Refer to TEMPERATURE REGULATION
section.
WATER HEATER SOUNDS Condensationdrippingonburner. Refer to CONDENSATION above.
SIZZLING - RUMBLING Sedimentatbottomofheatertank.
Clean sediment from tank. Refer to
DRAINING.
SOOTING Impropercombustion. RefertoAirRequirements.
BURNER WILL NOT STAY LIT-GOES OUT
4-5 SECONDS
Outletpolarityisreversed. Testpolarityandcorrect.
Highambientroomtemperature.
Contact aqualified serviceagencyto
determinecause.
Defectivegascontrolvalvethermostat
. Replace
gascontrolvalvethermostat
.
VENT GAS ODORS
Lackofairsupply.
Shutoffwaterheaterimmediatelyandcontacta
qualiedserviceagencytodeterminecause.
Improperlyinstalledventpiping.
Downdraft
PoorCombustion
TROUBLESHOOTING GUIDELINES
Theseguidelinesshouldbeutilizedbyaqualiedserviceagent.
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