AO Smith
Gas Water Heater

Model # FCG100244 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FCG100244 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 29 parts  |

Restrictor 35405
#17

Water heater diagram

Restrictor

Part #35405

This item is not returnable
In Stock
Label 182734
#23

Water heater diagram

Label

Part #182734

Replaced by #182734-000

?
Manufacturer substitution
This part replaces 182734. Substitute parts can look different from the original.
In Stock
Anode Rod 183523-48
#1

Water heater diagram

Anode rod

Part #183523-48

Replaced by #100109594

?
Manufacturer substitution
This part replaces 183523-48. Substitute parts can look different from the original.
In Stock
Burner 41157-8
#4

Water heater diagram

Burner

Part #41157-8

Replaced by #9004089005

?
Manufacturer substitution
This part replaces 41157-8. Substitute parts can look different from the original.
In Stock
Thermocouple 35489-2
#7

Water heater diagram

Thermocouple

Part #35489-2

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

Valve 180193-5
#11

Water heater diagram

Valve

Part #180193-5

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

Label 41259
#19

Water heater diagram

Label

Part #41259

Replaced by #041259-000

?
Manufacturer substitution
This part replaces 41259. Substitute parts can look different from the original.
This item is not returnable
In Stock
Nipple 194135
#25

Water heater diagram

Nipple

Part #194135

Replaced by #9004228005

?
Manufacturer substitution
This part replaces 194135. Substitute parts can look different from the original.
In Stock
Anode Rod 183463-48
#1A

Water heater diagram

Anode rod

Part #183463-48

Replaced by #100108660

?
Manufacturer substitution
This part replaces 183463-48. Substitute parts can look different from the original.
In Stock
Inner Door 39923
#12

Water heater diagram

Inner door

Part #39923

Replaced by #100109442

?
Manufacturer substitution
This part replaces 39923. Substitute parts can look different from the original.
In Stock

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…

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

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

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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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Using a wiring schematic to trace a current video

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Easy DIY water heater repairs

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