A.O. Smith GDVH, XDVS, GDVS owner manual Troubleshooting

Page 23

TROUBLESHOOTING

Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first.

PROBLEM

POSSIBLE MALFUNCTION

SERVICE TO BE PERFORMED

 

POSSIBLE SOLUTION

NO HOT WATER

1)

No pilot

 

 

 

 

 

A.

No gas to pilot

Check gas supply

 

Turn on, check pressure

 

 

 

 

Check gas valve

 

Turn on or replace if needed

 

 

 

 

Check pilot orifice for obstruction

 

Clean with air or replace

 

 

 

 

Check pilot tube for kink or leaks

 

Replace pilot tube

 

 

B.

Pilot will not stay lit

Check gas pressure

 

 

 

 

 

 

Check thermostat MV drop-out voltage

 

 

 

 

 

 

Check thermocouple connection and

 

Tighten if loose, replace

 

 

 

 

MV output

 

as necessary

 

 

 

 

Check thermocouple placement in pilot flame

 

3/8- should be in flame

 

 

 

 

Check pilot for proper flame

 

Change pilot orifice

 

 

 

 

Check ECO operation

 

Replace gas valve

 

 

 

 

Check for air in pilot tube

 

Bleed as necessary

 

 

C.

Pilot blows out

Leaking joints

 

Check all vent joints for proper seal.

 

 

 

 

 

 

Make sure to check inner and outer

 

 

 

 

 

 

pipe and check rear air tube seals.

 

 

 

 

 

 

Refer to installation manual.

 

 

 

 

Check for proper vent cap

 

Install A. O. Smith provided vent cap

 

 

 

 

Check for bent, missing, or mislocated

 

 

 

 

 

 

pilot shield (natural gas units only)

 

Replace or reposition

 

 

 

 

Check outer door seal

 

Replace gasket if missing

 

 

 

 

 

 

Tighten screws if loose

 

 

 

 

 

 

Install gasket properly if misinstalled

NOT ENOUGH

1)

Incorrect burner orifice

Check orifice size

 

Replace with correct size

HOT WATER

2)

No gas to main burner

Check gas supply

 

Correct as needed

 

 

 

 

Check thermostat operation

 

Replace as needed

 

3)

Heater too small

Confirm sizing requirements

 

Replace with larger heater, add

 

 

 

 

 

 

another heater, or decrease

 

 

 

 

 

 

water usage.

YELLOW FLAMES

1)

Excessive or low gas

Check gas pressure

 

 

OR SOOT

 

pressure

 

 

 

 

2)

Combustion air restricted

Check vent for restrictions

 

Correct as necessary

 

 

 

 

Check venting for extra piping

 

Re-install as recommended in

 

 

 

 

 

 

the installation manual

CONDENSATION

1)

Water on floor under heater

See page 21 “CONDENSATION”

 

 

 

 

 

 

 

 

BURNER WILL

1)

Low gas pressure

Check gas supply pressure

 

 

NOT STAY LIT

 

 

 

Check thermostat operation

 

 

 

2)

Downdraft or

Check for proper vent cap

 

Install proper vent cap

 

 

backdraft condition

Check location of heater

 

Re-install in correct location

 

 

 

 

Check for proper vent sealing

 

Reseal venting

 

 

 

 

Check top and/or bottom air supply

 

Seal as necessary

 

 

 

 

box for air leaks

 

 

 

 

 

 

Check outer door seal

 

Replace gasket, tighten screws

 

 

 

 

 

 

or re-install gasket as necessary

 

 

 

 

 

 

 

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Contents Direct Vent GAS Models Replacement Parts Typical InstallationExtended NON-USE Periods Vent KIT Assembly ComponentsExternal Damage Chemical Vapor CorrosionGAS Connections Water Potable Heating and Space HeatingClosed Water System Vent Pipe Termination Relief ValveVenting Venting Clearances Optional Wire GrillCombustion AIR and Ventilation Possible Extension Combinations Flue ExtensionsCutting the Opening Through Outside Wall ALL InstallationsVertical Extension KIT Height Horizontal Extension KITWater Heater Attitude Standard Vent KIT Installation #1Page Gallon Equation C a -10 =Page Page Optional Horizontal Vent KIT #900124-7 Installation #3 Page Capacity Natural Equation C a 10 =Insert the 6 telescoping vent section into the wall Page Filling High Altitude InstallationsTemperature Regulation Valve and Pipe InsulationForce For Your Safety Read Before LightingDraining Temperature & Pressure Relief ValvePilot and Main Burner Cathodic Protection Anode Anode ROD MaintenanceCondensation Troubleshooting Limitation on Implied Warranties Service and Labor ResponsibilityClaim Procedure Conditions and ExceptionsPage Page Page Tennessee Waltz PARKWAY, Ashland CITY, TN

GDVH, XDVS, GDVS specifications

A.O. Smith is a leading manufacturer of water heating solutions, renowned for offering innovative products that cater to both residential and commercial needs. Among its impressive lineup, the GDVH, XDVS, and GDVS models stand out, showcasing advanced features and technologies that enhance performance and efficiency.

The A.O. Smith GDVH series is designed for high-efficiency gas water heating. These units come equipped with the latest condensing technology, which allows them to utilize heat that would otherwise be lost in traditional systems. This process results in improved energy efficiency and significant cost savings on energy bills. The GDVH series is also noted for its EcoSmart feature, which adjusts the operational settings according to water usage patterns, further optimizing energy consumption.

The XDVS model, on the other hand, is a testament to A.O. Smith's commitment to durability and performance. Constructed with high-quality materials, the XDVS offers exceptional resistance against corrosion, thereby prolonging the lifespan of the unit. This model features advanced controls that provide real-time diagnostic information, enabling users to monitor performance and schedule maintenance effectively.

The GDVS series bridges the gap between affordability and performance. These water heaters are designed with a user-friendly interface, allowing for simple operation and easy adjustments. The GDVS models utilize a high-efficiency burner system that ensures rapid heating capabilities while keeping energy costs down. Additionally, the units are compact, making them ideal for homes with limited installation space, without compromising on output performance.

All three models incorporate A.O. Smith’s proven heating technologies that prioritize safety and efficiency. They feature advanced flame sensors and integrated safety controls that protect against overheating and ensure reliable operation. Furthermore, these models are compatible with various installation configurations, making them versatile options for diverse applications.

In conclusion, A.O. Smith's GDVH, XDVS, and GDVS water heaters present a blend of cutting-edge technology, rugged durability, and user-friendly features, catering to the needs of modern households and businesses. With energy efficiency as a hallmark of their design, these models not only promise excellent performance but also contribute to sustainable energy usage, making them an ideal choice for eco-conscious consumers.
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