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AO Smith
Gas Water Heater

Model # GCV40-200 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GCV40-200 water heater, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
Error Codes

Model diagram and schematic

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Showing 10 of 22 parts  |
Kenmore Water Heater Temperature And Pressure Relief Valve (replaces 6900816, 9000071) 9000071015
#8

Water heater diagram

Kenmore water heater temperature and pressure relief valve (replaces 6900816, 9000071)

Part #9000071015

BEST SELLER
$14.36 | 
12% OFF Phone Price : $16.36
In Stock
Water Heater Manifold Door Gasket 9006141015
#NI

Water heater diagram

Water heater manifold door gasket

Part #9006141015

$25.49 | 
19% OFF Phone Price : $31.49
In Stock
Water Heater Burner (replaces 100110929) 9006136005
#NI

Water heater diagram

Water heater burner (replaces 100110929)

Part #9006136005

$23.93 | 
20% OFF Phone Price : $29.93
In Stock
Anode Mg 9003938005
#7A

Water heater diagram

Anode mg

Part #9003938005

$52.49
In Stock
Ring 9000275015
#2

Water heater diagram

Ring

Part #9000275015

Replaced by #100108369

?
Manufacturer substitution
This part replaces 9000275015. Substitute parts can look different from the original.
$27.78
In Stock
Water Heater Anode Rod (replaces 9003920) 9006299005
#6B

Water heater diagram

Water heater anode rod (replaces 9003920)

Part #9006299005

Replaced by #100111073

?
Manufacturer substitution
This part replaces 9006299005. Substitute parts can look different from the original.
$44.44
In Stock
Water Heater Inlet Tube Gasket 9002277015
#NI

Water heater diagram

Water heater inlet tube gasket

Part #9002277015

Replaced by #100108744

?
Manufacturer substitution
This part replaces 9002277015. Substitute parts can look different from the original.
$24.44
In Stock
Water Heater Vent Draft Hood 9006647005
#1

Water heater diagram

Water heater vent draft hood

Part #9006647005

Replaced by #100111362

?
Manufacturer substitution
This part replaces 9006647005. Substitute parts can look different from the original.
$34.44
In Stock
Water Heater Drain Valve 9004330015
#9

Water heater diagram

Water heater drain valve

Part #9004330015

Replaced by #100263839

?
Manufacturer substitution
This part replaces 9004330015. Substitute parts can look different from the original.
$34.44
In Stock
Water Heater Burner Access Door 9006648005
#11

Water heater diagram

Water heater burner access door

Part #9006648005

Replaced by #100111363

?
Manufacturer substitution
This part replaces 9006648005. Substitute parts can look different from the original.
$35.56
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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