A.O. Smith Dve-52/80/120 Troubleshooting Checklist, Not enough or no hot water, Replacement Parts

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TROUBLESHOOTING CHECKLIST

CHECKLIST

Before calling for service, check the following points to see if the cause of trouble can be identified and corrected.

Reviewing this checklist may eliminate the need of a service call and quickly restore hot water service. See Figures 1 and 2 in this manual to identify and locate water heater components.

Not enough or no hot water

1.Be certain the electrical disconnect switch serving the water heater is in the ON position.

2.Check the fuses.

•The electrical disconnect switch usually contains fuses.

•The heater has fusing.

3.If the water was excessively hot, and is now cold, the high limit switch may have activated.

•See the Temperature Regulation section of this manual for more information on how to reset the ECO high limit controls.

4.The capacity of the heater may have been exceeded by a large demand for hot water.

•Large demands require a recovery period to restore water temperature.

5.Cooler incoming water temperature will lengthen the time required to heat water to the desired temperature.

6.Look for hot water leakage.

7.Sediment or pipe scale may be affecting water heater operation.

ABNORMAL SOUNDS

1.Sediment or lime scale accumulations on the elements causes sizzling and hissing noises when the heater is operating.

•The sounds are normal, however, the tank bottom and elements should be cleaned. See the Maintenance section of this manual.

2.Some of the electrical components of the water heater make sounds which are normal.

•Contactors will “click” or snap as the heater starts and stops.

•Transformers and contacts often hum.

Water leakage is suspected

Refer to Leakage Checkpoint on the following page.

1.Check to see if the heater drain valve is tightly closed.

2.If the outlet of the relief valve is leaking it may represent:

•Excessive water temperature.

•Faulty relief valve.

•Excessive water pressure.

3.Excessive water pressure is the most common cause of relief valve leakage. It is often caused by a “closed system”. See “Closed Water Systems” and “Thermal Expansion” in the Installation section of this manual for more information.

4.Examine the area around the element for gasket leakage.

•Tighten the elements or, if necessary, follow the WATER AND LIME SCALE REMOVAL procedure to replace the gaskets.

IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE OF MALFUNCTION

1.Turn the power supply to the water heater off.

2.Close the supply water inlet valve to the heater.

3.Contact a Qualified Service Agency in your area. Call the toll free phone number on the back cover of this Instruction Manual for assistance in locating a service agency in your area.

REPLACEMENT PARTS

Call the toll free phone number on the back cover of this Instruction Manual for assistance in locating replacement parts.. When ordering parts, specify complete model no., serial no., (see rating plate), quantity and name of part desired. Standard hardware items should be purchased locally.

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Contents Optional Installation Operation Service Maintenance Limited WarrantyQualified Installer or Service Agency Safe INSTALLATION, USE, and ServiceImportant Definitions Ansi Z223.1 2006 SecPrecautions General Safety InformationHydrogen GAS Flammable Grounding InstructionsIntroduction Table of ContentsStandard DRE/DVE Model DifferencesBTU KW Input Hour 100 110 120 130 140Model and Rating ApprovalsFeatures and Components Surface Mount Control Models Facts to Consider About the Location Locating the NEW Water HeaterInstallation Water Line Connections Closed Water SystemsThermal Expansion 16. Allowable Ampacities of Insulated Conductors ElectricalAmperage TABLE/OVERCURRENT Protection Heater Circuits Electronic Control ModelsControl CIRCUIT- Electronic Control Models Wiring Diagrams Power Circuit Diagrams Electronic Control Models Nine Element Single and Three Phase Diagram Conversion to Single Phase Conversion to Three PhasePower Circuit Diagrams Surface Mount Control Models Nine Elements Single and Three Phase Diagram Conversion to Single PhaseGeneral OperationFilling the Water Heater Initial Start UPHigh Temperature Limit Controls ECO Temperature RegulationThermostat Settings Surface Mount Control Thermostat ControlsControl System Features Thermostat Settings electronic CONTROLsElectronic Control Models Operation Control System NavigationStatus Icons Description Discreet Menu Contact Information From the Desktop ScreenOperating States Temperatures MenuState Description Control System MenusDifferential Settings Temperature SettingsOperating Sequence Tank Probe OffsetHeater Status Menu Economy Mode Setup MenuSetpoint Adjustment Value Economy Mode SettingsTime Clock Settings Daily Operating Mode Settings Display Settings Menu Alarm Output Setup MenuHeater Information Menu TOP of Menu Bottom of MenuFault Occurrence Menu Current Fault / Alert MenuFault History Menu Restore Factory Defaults MenuMaintenance Anode Inspection and ReplacementRestore Factory Defaults Flushing Maintenance ScheduleSediment Removal Lime Scale RemovalChecklist Troubleshooting ChecklistReplacement Parts Not enough or no hot waterLeakage Checkpoints ONE Temperature with Circulating Loop Piping DiagramsPiping Diagrams Piping Diagrams TWO Temperature with Mixing Valve Circulating Loop Piping Diagrams Piping Diagrams Piping Diagrams Manifold Kits TWO Heaters Manifold KitsThree Heaters Four HeatersTank Warranty

Dve-52/80/120 specifications

The A.O. Smith DVE-52/80/120 is an innovative water heater designed to meet the diverse needs of both residential and commercial applications. Known for its efficiency and reliability, it stands out in the market due to its advanced features and cutting-edge technologies.

One of the main characteristics of the DVE series is its high energy efficiency, contributing to lower energy bills and a smaller carbon footprint. The units are designed with a high-efficiency burner that can achieve an energy factor (EF) rating significantly above average, ensuring more hot water is produced for less fuel consumption. This makes the A.O. Smith DVE-52/80/120 an environmentally friendly choice without sacrificing performance.

These water heaters also incorporate a unique flame rod technology that enhances the safety and reliability of the system. This feature continuously monitors the ignition of the burner and ensures an optimal combustion process, contributing to both safety and performance. Moreover, their design includes an advanced digital control system that facilitates ease of use and precise temperature management, allowing users to customize their hot water needs efficiently.

The construction of the DVE series is robust, featuring a durable glass-lined tank that resists corrosion and extends the lifespan of the heater. Insulation is another highlight, as A.O. Smith employs thick foam insulation to minimize heat loss, further improving efficiency.

The DVE-52/80/120 models also come equipped with various capacity options, catering to different household sizes and usage patterns. Whether for a small home or a larger establishment, the flexibility in capacity ensures users have consistent hot water availability according to their demands.

Additionally, the A.O. Smith DVE series is compatible with various smart home systems, making it an ideal choice for modern households seeking integrated solutions. The compatibility with Wi-Fi allows for remote monitoring and control, giving users greater convenience and peace of mind.

In summary, the A.O. Smith DVE-52/80/120 water heater is engineered with advanced technologies and reliable features that ensure optimal efficiency, safety, and performance, making it a smart investment for any hot water needs. Its blend of durability, customizable capacity, and smart technology integration positions it as a leading choice in the water heating market.
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