Gas Water Heater

Model # FSG50231 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FSG50231 water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for
FSG50231 Water Heaters
Pilot 182165-4
#7A

Water heater diagram

Pilot

Part #182165-4

In Stock
Hanger 181360
#3

Water heater diagram

Hanger

Part #181360

Replaced by #9004362115

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Manufacturer substitution
This part replaces 181360. Substitute parts can look different from the original.
In Stock
Gas Valve 181775-2
#27

Water heater diagram

Gas valve

Part #181775-2

Replaced by #9003408005

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Manufacturer substitution
This part replaces 181775-2. Substitute parts can look different from the original.
$288.57
$12.00 OFF Phone Price : $300.57
In Stock
Insert 181235
#19

Water heater diagram

Insert

Part #181235

Replaced by #183360-000

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Manufacturer substitution
This part replaces 181235. Substitute parts can look different from the original.
In Stock
Orifice,pg 181791-50
#8

Water heater diagram

Orifice,pg

Part #181791-50

Replaced by #100108722

?
Manufacturer substitution
This part replaces 181791-50. Substitute parts can look different from the original.
In Stock
Baffle 181589
#2

Water heater diagram

Baffle

Part #181589

Replaced by #100111607

?
Manufacturer substitution
This part replaces 181589. Substitute parts can look different from the original.
In Stock
Drain Valve 42037
#29

Water heater diagram

Drain valve

Part #42037

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

Dip Tube 21067-37
#28

Water heater diagram

Dip tube

Part #21067-37

Replaced by #100109602

?
Manufacturer substitution
This part replaces 21067-37. Substitute parts can look different from the original.
In Stock
Thrmocoupl 23673
#9

Water heater diagram

Thrmocoupl

Part #23673

Replaced by #100108462

?
Manufacturer substitution
This part replaces 23673. Substitute parts can look different from the original.
In Stock
Restrictor 34894
#4

Water heater diagram

Restrictor

Part #34894

Replaced by #100110078

?
Manufacturer substitution
This part replaces 34894. 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.

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

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

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

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.

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…