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AO Smith
Gas Water Heater

Model # FPD40270 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FPD40270 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

Model diagram and schematic

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ALL PARTS
Showing 10 of 59 parts  |
Valve 76527-3
#55

Water heater diagram

Valve

Part #76527-3

Replaced by #9000071

?
Manufacturer substitution
This part replaces 76527-3. Substitute parts can look different from the original.
$15.54 | 
11% OFF Phone Price : $17.54
In Stock
Angle,l 181450
#14

Water heater diagram

Angle,l

Part #181450

This item is not returnable
$2.16
In Stock
Igniter Assembly 184047
#9

Water heater diagram

Igniter assembly

Part #184047

Replaced by #100109355

?
Manufacturer substitution
This part replaces 184047. Substitute parts can look different from the original.
$160.00
In Stock
Box Bottom 181490-1
#6

Water heater diagram

Box bottom

Part #181490-1

Replaced by #181490-001

?
Manufacturer substitution
This part replaces 181490-1. Substitute parts can look different from the original.
$31.99
In Stock
Anode Rod 183523-26
#1

Water heater diagram

Anode rod

Part #183523-26

Replaced by #100109624

?
Manufacturer substitution
This part replaces 183523-26. Substitute parts can look different from the original.
$31.11
In Stock
Collar 20172-21
#12

Water heater diagram

Collar

Part #20172-21

Replaced by #9004610115

?
Manufacturer substitution
This part replaces 20172-21. Substitute parts can look different from the original.
$15.99
In Stock
Natural Gas Burner 182730
#8

Water heater diagram

Natural gas burner

Part #182730

Replaced by #100109226

?
Manufacturer substitution
This part replaces 182730. Substitute parts can look different from the original.
$44.44
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
Inlet Tube 183359-41
#50

Water heater diagram

Inlet tube

Part #183359-41

Replaced by #183359-041

?
Manufacturer substitution
This part replaces 183359-41. Substitute parts can look different from the original.
This item is not returnable
$6.49
In Stock
Natural Gas Orifice 181508-123
#10

Water heater diagram

Natural gas orifice

Part #181508-123

Replaced by #9004327005

?
Manufacturer substitution
This part replaces 181508-123. Substitute parts can look different from the original.
$20.49
In Stock

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