A.O. Smith WATER HEATERS instruction manual Troubleshooting Guidelines, Problem Cause Solution

Page 16

TROUBLESHOOTING GUIDELINES

These guidelines should be utilized by a qualified service agent.

Problem

Cause

Solution

WATER LEAKS

Improperly sealed, hot or cold supply connection,

Tighten threaded connections.

(See Leakage Checkpoints on 14)

relief valve or drain valve.

 

 

 

 

 

Leakage from other appliances or water lines.

Inspect other appliances near water heater.

 

 

 

LEAKING TEMPERATURE

Thermal expansion in closed water system.

Install thermal expansion tank

AND PRESSURE

 

(DO NOT plug T&P valve).

RELIEF VALVE

 

 

Improperly seated valve.

Check relief valve for proper operation

 

 

 

(DO NOT plug T&P valve).

 

 

 

HOT WATER ODORS

High sulfate or mineral content in water supply.

Drain and flush heater thoroughly, then refill.

(CAUTION: UNAUTHORIZED REMOVAL OF THE

 

 

 

 

ANODE(S) WILL VOID THE WARRANTY FOR

Bacteria in water supply.

Chlorinate water supply.

FURTHER INFORMATION, CONTACT YOUR

 

 

DEALER)

 

 

 

 

 

NOT ENOUGH

Power supply to heater is not on.

Turn disconnect switch on or contact

OR

 

electrician.

NO HOT WATER

Thermostat set too low.

Refer to temperature regulation.

 

 

 

 

 

Heater undersized.

Reduce hot water use.

 

 

 

 

Incoming water is usually cold (Winter).

Allow more time for heat to reheat.

 

 

 

 

Leaking hot water from pipes or fixtures.

Have plumber check and repair leaks.

 

 

 

 

High temperature limit switch activated.

Contact dealer to determine cause. See

 

 

temperature regulation.

HOT WATER TOO HOT

Thermostat set too high.

Refer to temperature regulation.

 

 

 

 

High temperature limit switch activated.

Contact dealer to determine cause. See

 

 

temperature regulation.

 

 

 

WATER HEATER SOUNDS

Scale accumulation on elements.

Contact dealer to clean or replace elements.

 

 

 

 

Sediment build-up on tank bottom.

Drain and flush heater thoroughly, then refill.

 

 

 

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Contents Residential Electric Safe INSTALLATION, USE and Service Important DefinitionsGeneral Safety Table of Contents Preparing for the Installation IntroductionLowboys Uprights Typical InstallationCompacts Table Tops Wiring Diagrams Mixing Valve Usage HotterwatercanscaldInstalling the NEW Water Heater Locating the NEW Water HeaterFacts to Consider about the Location Insulation BlanketsTEMPERATURE-PRESSURE Relief Valve Filling the Water Heater Valve and Pipe Insulation On Selected ModelsTemperature Regulation TemperatureadjustmentPeriodic Maintenance For Your InformationOperational Conditions Anode ROD InspectionTEMPERATURE-PRESSURE Relief Valve Operation Drain Valve Washer ReplacementService DrainingLeakage Checkpoints Repair Parts List Part DescriptionTroubleshooting Guidelines Problem Cause SolutionPXHT, Pxhs Conditions and ExceptionsService and Labor Responsibility Claim ProcedureInstallation Information Limitation on Implied Warranties