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.

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Model diagram and schematic

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Showing 10 of 12 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
$17.72
10% OFF Phone Price : $19.72
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
Flue Baffl 9006436005
#3

Water heater diagram

Flue baffl

Part #9006436005

In Stock
Window Assembly 9006142015
#16

Water heater diagram

Window assembly

Part #9006142015

In Stock
Drain Pan 23914A
#20

Water heater diagram

Drain pan

Part #23914A

The manufacturer no longer makes this part, and there's no substitute part

Drain Valve 9001870015
#9

Water heater diagram

Drain valve

Part #9001870015

The manufacturer no longer makes this part, and there's no substitute part

Burner/door Asy 9006444005
#10

Water heater diagram

Burner/door asy

Part #9006444005

The manufacturer no longer makes this part, and there's no substitute part

Outer Door 700795-018
#11

Water heater diagram

Outer door

Part #700795-018

The manufacturer no longer makes this part, and there's no substitute part

Water Heater Burner Tube 9006445015
#19

Water heater diagram

Water heater burner tube

Part #9006445015

The manufacturer no longer makes this part, and there's no substitute part

Heat Trap 9003915015
Heat trap

Part #9003915015

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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

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

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

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

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

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

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

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.

How to read a wiring schematic video

How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.…

Easy DIY water heater repairs

Easy DIY water heater repairs

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Water heater common questions

Water heater common questions

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