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AO Smith
Gas Water Heater

Model # GDVH40L Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GDVH40L water heater, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 62 parts  |
Water Heater Manifold Inner Door 9000281
#10

Water heater diagram

Water heater manifold inner door

Part #9000281

$17.69 | 
10% OFF Phone Price : $19.69
In Stock
Extension Pipe 9000713
#25

Vent kit diagram

Extension pipe

Part #9000713

$8.49
In Stock
Extension Pipe 9001276
#39

Vent kit diagram

Extension pipe

Part #9001276

Replaced by #9001276005

?
Manufacturer substitution
This part replaces 9001276. Substitute parts can look different from the original.
$32.49
In Stock
Natural Gas Pilot 9003084
#11

Water heater diagram

Natural gas pilot

Part #9003084

Replaced by #100109101

?
Manufacturer substitution
This part replaces 9003084. Substitute parts can look different from the original.
$102.22
In Stock
Vent Cap 9000725
#56

Vent kit diagram

Vent cap

Part #9000725

Replaced by #9000725005

?
Manufacturer substitution
This part replaces 9000725. Substitute parts can look different from the original.
$148.99
In Stock
Thrmocoupl 9000876
#5

Vent kit diagram

Thrmocoupl

Part #9000876

Replaced by #100108462

?
Manufacturer substitution
This part replaces 9000876. Substitute parts can look different from the original.
$33.33
In Stock
Shield 185424-000
#61

Water heater diagram

Shield

Part #185424-000

Replaced by #9005693005

?
Manufacturer substitution
This part replaces 185424-000. Substitute parts can look different from the original.
$45.99
In Stock
Flue Pipe 9001283
#29

Vent kit diagram

Flue pipe

Part #9001283

Replaced by #9001283005

?
Manufacturer substitution
This part replaces 9001283. Substitute parts can look different from the original.
$30.99
In Stock
Extension Pipe 9001280
#26

Vent kit diagram

Extension pipe

Part #9001280

Replaced by #9001280005

?
Manufacturer substitution
This part replaces 9001280. Substitute parts can look different from the original.
$34.49
In Stock
Gas Valve 9002123
#6A

Water heater diagram

Gas valve

Part #9002123

Replaced by #9002123005

?
Manufacturer substitution
This part replaces 9002123. Substitute parts can look different from the original.
$278.36 | 
$12.00 OFF Phone Price : $290.36
In Stock

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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Why isn't my water heater heating my water?

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

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Why isn't my water heater making the water hot enough?

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

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Why is there water in my water heater's drain pan?

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

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Why does my hot water smell like rotten eggs?

Main causes: water supply needs chlorine treatment, anode rod too reactive…

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Why isn't my water heater making enough hot water?

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

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Why is my water heater making the water too hot?

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

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Why is my water heater's pressure relief valve dripping water?

Main causes: faulty pressure relief valve, water is overheating…

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Effective articles & videos to help repair your water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

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Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

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Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

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Easy DIY water heater repairs

Easy DIY water heater repairs

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