A.O. Smith AOSRE50400 Troubleshooting Guidelines, Problem Possible Causes Corrective Action

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TROUBLESHOOTING GUIDELINES

These guidelines should be utilized by a qualified service agent.

Problem

possible Cause(s)

corrective Action

 

 

 

WATER LEAKS

Improperly sealed, hot or cold supply connection,

Tighten threaded connections.

(See Leakage Checkpoints in this manual)

relief valve or drain valve.

 

 

 

 

 

Leakage from other appliances or water lines.

Inspect other appliances near water heater.

 

 

 

NO HOT WATER

No power to heater.

Turn on electrical switch. Check for blown

 

 

fuses or tripped breaker.

 

 

 

 

High Temperature Limit Switch open.

Reset. Check for source of trouble and correct.

 

 

 

 

Non-functioning thermostat.

Replace thermostat.

 

 

 

INSUFFICIENT HOT WATER

Non-functioning thermostat.

Replace thermostat.

 

 

 

 

Improper calibration.

Replace thermostat.

 

 

 

 

Thermostat set too low.

Set thermostat to desired temperature.

 

 

 

 

Sediment or lime in tank.

Drain. Determine if water treatment is needed.

 

 

 

 

Heater too small for job.

Install adequate water heater.

 

 

 

 

Wrong piping connections.

Correct piping.

 

 

 

 

Leaking faucets.

Repair faucets.

 

 

 

 

Wasted hot water.

Review and reduce hot water consumption.

 

 

 

 

Long runs of exposed pipe.

Insulate piping.

 

 

 

 

Hot water piping on outside wall.

Insulate piping.

 

 

 

HIGH OPERATION COSTS

Improper Calibration.

Replace thermostat.

 

 

 

 

Thermostat set too high.

Set thermostat to desired setting.

 

 

 

 

Sediment or lime in tank.

Drain. Flush-Provide water treatment if needed.

 

 

 

 

Heater too small for job.

Install adequate heater.

 

 

 

 

Wrong piping connections.

Correct piping.

 

 

 

 

Leaking faucets.

Repair faucets.

 

 

 

 

Wasted hot water.

Review and reduce hot water consumption.

 

 

 

 

Long runs of exposed piping.

Insulate piping.

 

 

 

 

Hot water piping in exposed wall.

Insulate piping.

 

 

 

SLOW HOT WATER RECOVERY

Non-functioning element.

Replace element.

 

 

 

DRIP FROM RELIEF VALVE

Excessive water pressure.

Use Pressure Reducing Valve and Pressure

 

 

Relief Valve.

 

Closed system.

See “Thermal Expansion” in the For Your Infor-

 

 

mation section.

THERMOSTAT DOES NOT SHUT OFF

Non-functioning thermostats.

Replace thermostats.

 

 

 

 

 

Improper calibration.

Replace thermostats.

 

 

 

WATER ODOR

Sulfides in the water.

See “Operational Conditions” in the For Your

 

 

Information section.

WATER HEATER SOUNDS

Scale accumulation on elements.

Contact dealer to clean or replace elements.

 

 

 

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Contents Residential Electric Safe INSTALLATION, USE and Service Important DefinitionsGeneral Safety Table of Contents IntroductionTypical Installation Mixing Valve Usage Hotter Water can ScaldFacts to Consider About the Location Read ALL Instructions Before Using this Water HeaterLocating the NEW Water Heater Insulation BlanketsInstalling the NEW Water Heater MountingWater Piping Temperature- Pressure Relief Valve Water Piping Pressure TestFilling the Water Heater Wiring Diagram Wiring Temperature Regulation Temperature AdjustmentFor Your Information Thermal ExpansionOperational Conditions Anode ROD Inspection Periodic MaintenanceTemperature-Pressure Relief Valve Operation DrainingReplacement Thermostat Removal / ReplacementElement Cleaning / Replacement RemovalHigh Limit Switch Removal and replacement ServiceTo Remove and Replace Anode Leakage Checkpoints Troubleshooting Guidelines Problem Possible Causes Corrective ActionRepair Parts List Residential Electric Warranty Conditions and ExceptionsLimitation on Implied Warranties Service and Labor ResponsibilityClaim Procedure DisclaimersPage

AOSRE50400 specifications

A.O. Smith AOSRE50400 is a high-efficiency water heater that exemplifies advanced technology and engineering, making it a popular choice for residential and commercial applications. This model is part of A.O. Smith’s comprehensive line of water heating solutions and is designed to provide reliable performance while maximizing energy efficiency.

One of the standout features of the AOSRE50400 is its high energy factor (EF), which greatly contributes to reduced energy bills and a smaller environmental footprint. With an EF rating of approximately 0.95, this water heater utilizes innovative design techniques to ensure that more of the energy consumed is converted into usable hot water. It meets and often exceeds the stringent energy efficiency standards set by the Department of Energy.

The AOSRE50400 is equipped with advanced insulating materials, which minimize heat loss and improve overall efficiency. This is particularly beneficial in maintaining water temperature for extended periods, reducing the need for excessive reheating. The tank has been designed with a glass-lined interior that offers enhanced durability and resistance to corrosion, extending the lifespan of the unit.

Another important characteristic of the AOSRE50400 is its large capacity. With a tank size of 50 gallons, it can effectively meet the hot water demands of medium to large households or businesses. This capacity allows for simultaneous usage across multiple outlets, ensuring that you never run out of hot water when you need it most.

The digital display and user-friendly interface provide homeowners with easy control over temperature settings and operation modes. This feature enhances user convenience and allows for customized hot water delivery that can cater to specific usage needs. Furthermore, the built-in diagnostic system alerts users to any potential issues, ensuring timely maintenance and reducing the risk of costly repairs.

A.O. Smith also prioritizes safety in the design of the AOSRE50400. It comes with multiple safety features, including a temperature and pressure relief valve, which helps prevent potential overpressure situations. This commitment to safety ensures peace of mind for users and compliance with local plumbing codes.

In summary, the A.O. Smith AOSRE50400 water heater exemplifies modern engineering and technology, offering high energy efficiency, a durable design, user-friendly controls, and a strong commitment to safety. Its large capacity and advanced features make it an exceptional choice for those seeking reliable and efficient hot water solutions.
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