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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.

There are a couple of ways to find the part or diagram you need:

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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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ALL PARTS
Showing 10 of 22 parts  |
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
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
Anode Mg 9003938005
#7A

Water heater diagram

Anode mg

Part #9003938005

$52.49
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 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 Anode Rod (replaces 183523-033, 183523-036, 183523-039, 183523-042, 183523-33, 183523-36, 183523-48, 4700276, 9003889, 9003892, 9004092, 9004335005) 9003892005
#6

Water heater diagram

Water heater anode rod (replaces 183523-033, 183523-036, 183523-039, 183523-042, 183523-33, 183523-36, 183523-48, 4700276, 9003889, 9003892, 9004092, 9004335005)

Part #9003892005

Replaced by #100109594

?
Manufacturer substitution
This part replaces 9003892005. Substitute parts can look different from the original.
$55.56
In Stock
Water Heater Pilot Assembly 9006666015
#NI

Water heater diagram

Water heater pilot assembly

Part #9006666015

Replaced by #100111380

?
Manufacturer substitution
This part replaces 9006666015. Substitute parts can look different from the original.
$53.33
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
Filter 9006616005
#NI

Water heater diagram

Filter

Part #9006616005

Replaced by #100111332

?
Manufacturer substitution
This part replaces 9006616005. Substitute parts can look different from the original.
$33.33
In Stock
Water Heater Thermocouple (replaces 194621, 6900725, 9000056, 9002322) 9000056015
#NI

Water heater diagram

Water heater thermocouple (replaces 194621, 6900725, 9000056, 9002322)

Part #9000056015

Replaced by #100108267

?
Manufacturer substitution
This part replaces 9000056015. Substitute parts can look different from the original.
$28.57
In Stock

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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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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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Wiring schematic symbols explained video

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