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State
Gas Water Heater

Model # GS640HOCT Official State water heater

Here are the diagrams and repair parts for Official State GS640HOCT 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.

Error Codes

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ALL PARTS
Showing 10 of 28 parts  |
Drain Pan 23913-A
#26A

Water heater diagram

Drain pan

Part #23913-A

Replaced by #100108616

?
Manufacturer substitution
This part replaces 23913-A. Substitute parts can look different from the original.
$64.44
In Stock
Drain Pan 23914-A
#26B

Water heater diagram

Drain pan

Part #23914-A

Replaced by #100108615

?
Manufacturer substitution
This part replaces 23914-A. Substitute parts can look different from the original.
$92.22
In Stock
Igniter Assembly 183798-000
#18

Water heater diagram

Igniter assembly

Part #183798-000

Replaced by #100109221

?
Manufacturer substitution
This part replaces 183798-000. Substitute parts can look different from the original.
$25.71
In Stock
Screen 183159-000
#1

Water heater diagram

Screen

Part #183159-000

Replaced by #100109216

?
Manufacturer substitution
This part replaces 183159-000. Substitute parts can look different from the original.
$22.86
In Stock
Outer Door 183458-000
#17

Water heater diagram

Outer door

Part #183458-000

Replaced by #100109299

?
Manufacturer substitution
This part replaces 183458-000. Substitute parts can look different from the original.
$35.56
In Stock
Shield 191259-001
#24

Water heater diagram

Shield

Part #191259-001

Replaced by #9003696005

?
Manufacturer substitution
This part replaces 191259-001. Substitute parts can look different from the original.
$77.79 | 
7% OFF Phone Price : $83.79
In Stock
Gasket 183162-000
#14

Water heater diagram

Gasket

Part #183162-000

Replaced by #100109214

?
Manufacturer substitution
This part replaces 183162-000. Substitute parts can look different from the original.
$31.11
In Stock
Restrictor 034894-000
#10

Water heater diagram

Restrictor

Part #034894-000

Replaced by #100110078

?
Manufacturer substitution
This part replaces 034894-000. Substitute parts can look different from the original.
$27.78
In Stock
Drain Pan 23912-A
#26

Water heater diagram

Drain pan

Part #23912-A

Replaced by #100108459

?
Manufacturer substitution
This part replaces 23912-A. Substitute parts can look different from the original.
$63.33
In Stock
Burner Head 182730-000
#4

Water heater diagram

Burner head

Part #182730-000

Replaced by #100109226

?
Manufacturer substitution
This part replaces 182730-000. Substitute parts can look different from the original.
$44.44
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

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