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AO Smith
Gas Water Heater

Model # FPSE75235 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FPSE75235 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 49 parts  |
Restrictor 35405
#3

Water heater diagram

Restrictor

Part #35405

This item is not returnable
$3.05
In Stock
Lock Nut 29001
#8

Water heater diagram

Lock nut

Part #29001

This item is not returnable
$2.16
In Stock
Wall Plate 181557
#28

Water heater diagram

Wall plate

Part #181557

Replaced by #9004364105

?
Manufacturer substitution
This part replaces 181557. Substitute parts can look different from the original.
$10.99
In Stock
Pilot Tube 23330
#12

Water heater diagram

Pilot tube

Part #23330

Replaced by #9004473115

?
Manufacturer substitution
This part replaces 23330. Substitute parts can look different from the original.
$29.49
In Stock
T & P Valve 23740-1
#42

Water heater diagram

T & p valve

Part #23740-1

Replaced by #100108279

?
Manufacturer substitution
This part replaces 23740-1. Substitute parts can look different from the original.
$32.22
In Stock
Sealant 181564
#29

Water heater diagram

Sealant

Part #181564

Replaced by #9004365105

?
Manufacturer substitution
This part replaces 181564. Substitute parts can look different from the original.
$14.49
In Stock
Inner Door 39923
#17

Water heater diagram

Inner door

Part #39923

Replaced by #100109442

?
Manufacturer substitution
This part replaces 39923. Substitute parts can look different from the original.
$30.00
In Stock
Label 182734
#NI

Water heater diagram

Label

Part #182734

Replaced by #182734-000

?
Manufacturer substitution
This part replaces 182734. Substitute parts can look different from the original.
$13.99
In Stock
Relief Valve 43151-2
#42A

Water heater diagram

Relief valve

Part #43151-2

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

Owner's Manual 182586
#NI

Water heater diagram

Owner's manual

Part #182586

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

Most common symptoms to help you fix your water heaters

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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 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's pressure relief valve dripping water?

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

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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 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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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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How to read a wiring schematic video

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