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AO Smith
Gas Water Heater

Model # GPCR40100 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPCR40100 water heater, as well as links to manuals and error code tables, if available.

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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 45 parts  |
Access Parts 183509-002
#23

Water heater diagram

Access parts

Part #183509-002

$54.49
In Stock
Water Heater Owner's Manual 184674-001
#NI

Water heater diagram

Water heater owner's manual

Part #184674-001

$8.49
In Stock
Restrictor 184502-000
#29

Water heater diagram

Restrictor

Part #184502-000

$10.99
In Stock
Restrictor 184501-000
#28

Water heater diagram

Restrictor

Part #184501-000

This item is not returnable
$2.16
In Stock
Hex Nut 183717
#14

Water heater diagram

Hex nut

Part #183717

Replaced by #184746-000

?
Manufacturer substitution
This part replaces 183717. Substitute parts can look different from the original.
$11.99
In Stock
Wiring Harness 183506-1
#44

Water heater diagram

Wiring harness

Part #183506-1

Replaced by #9006022015

?
Manufacturer substitution
This part replaces 183506-1. Substitute parts can look different from the original.
$40.60
In Stock
Igniter Assembly 184047
#17

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
Label 183765
#NI

Water heater diagram

Label

Part #183765

Replaced by #183765-000

?
Manufacturer substitution
This part replaces 183765. Substitute parts can look different from the original.
$8.49
In Stock
Nox Screen 183619
#15

Water heater diagram

Nox screen

Part #183619

Replaced by #100111088

?
Manufacturer substitution
This part replaces 183619. Substitute parts can look different from the original.
$55.56
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

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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 making the water too hot?

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

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Why is my water heater's pressure relief valve dripping water?

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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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Wiring schematic symbols explained video

Wiring schematic symbols explained video

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Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

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Easy DIY water heater repairs

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