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State
Gas Water Heater

Model # GS640UOCT100 Official State water heater

Here are the diagrams and repair parts for Official State GS640UOCT100 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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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 19 parts  |
Water Heater Thermocouple (replaces 194621, 6900725, 9000056, 9002322) 9000056015
#NI

Water heater diagram

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

Part #9000056015

BEST SELLER
$17.19 | 
10% OFF Phone Price : $19.19
In Stock
Water Heater Manifold Door Gasket 9006141015
#15

Water heater diagram

Water heater manifold door gasket

Part #9006141015

$25.49 | 
19% OFF Phone Price : $31.49
In Stock
Window Assembly 9006142015
#16

Water heater diagram

Window assembly

Part #9006142015

$17.99
In Stock
Flue Baffl 9006436005
#3

Water heater diagram

Flue baffl

Part #9006436005

$51.49
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
#7

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
Draft Hood 700795-020
#1

Water heater diagram

Draft hood

Part #700795-020

Replaced by #100111362

?
Manufacturer substitution
This part replaces 700795-020. Substitute parts can look different from the original.
$34.44
In Stock
Ring 700795-021
#2

Water heater diagram

Ring

Part #700795-021

Replaced by #700795-021

?
Manufacturer substitution
This part replaces 700795-021. Substitute parts can look different from the original.
$16.25
In Stock
Water Heater Manifold Wire Connector 9006449015
#NI

Water heater diagram

Water heater manifold wire connector

Part #9006449015

Replaced by #100093865

?
Manufacturer substitution
This part replaces 9006449015. Substitute parts can look different from the original.
$27.78
In Stock
Water Heater Temperature And Pressure Relief Valve (replaces 9007483005) 9000728015
#8

Water heater diagram

Water heater temperature and pressure relief valve (replaces 9007483005)

Part #9000728015

Replaced by #100108455

?
Manufacturer substitution
This part replaces 9000728015. Substitute parts can look different from the original.
$35.56
In Stock
Igniter 9006143015
#NI

Water heater diagram

Igniter

Part #9006143015

Replaced by #100110936

?
Manufacturer substitution
This part replaces 9006143015. Substitute parts can look different from the original.
$32.22
In Stock

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