AO Smith
Gas Water Heater

Model #GCV40 Official AO Smith water heater

Here are the diagrams and repair parts for AO Smith GCV40 water heater, as well as links to manuals and error code tables, if available.

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Parts List

Showing 10 of 35 parts

Water Heater Igniter (replaces 183798, 183798-000)#18

Water heater Diagram

Igniter assembly

Part #183798-000
Replaced by #9003410
?
Manufacturer substitution
This part replaces 183798-000. Substitute parts can look different from the original.
BEST SELLER
In Stock
$20.91 | 
19% OFF 
Phone Price: $25.91
Water Heater Gas Valve (replaces 182791-004, 182791-4)#11

Water heater Diagram

Control valve

Part #182791-004
Replaced by #9003407005
?
Manufacturer substitution
This part replaces 182791-004. Substitute parts can look different from the original.
BEST SELLER
In Stock
$137.53 | 
7% OFF 
Phone Price: $147.53
Water Heater Temperature and Pressure Relief Valve (replaces 6900816, 9000071)#23

Water heater Diagram

Release valve

Part #076527-000
Replaced by #9000071015
?
Manufacturer substitution
This part replaces 076527-000. Substitute parts can look different from the original.
BEST SELLER
In Stock
$15.54 | 
11% OFF 
Phone Price: $17.54
Water Heater Pilot Assembly (replaces 183824-190, 9003530)#19

Water heater Diagram

Pilot assembly

Part #183824-190
Replaced by #9003542
?
Manufacturer substitution
This part replaces 183824-190. Substitute parts can look different from the original.
BEST SELLER
In Stock
$76.94 | 
6% OFF 
Phone Price: $81.94
Water Heater Air Intake Screen (replaces 183159, 183159-000, 9003983)#1

Water heater Diagram

Screen

Part #183159-000
Replaced by #9003406
?
Manufacturer substitution
This part replaces 183159-000. Substitute parts can look different from the original.
This item is not returnable
In Stock
$17.66 | 
10% OFF 
Phone Price: $19.66
Water Heater Manifold Door Gasket (replaces 183162, 183162-000)#14

Water heater Diagram

Gasket

Part #183162-000
Replaced by #9003401
?
Manufacturer substitution
This part replaces 183162-000. Substitute parts can look different from the original.
This item is not returnable
In Stock
$18.29 | 
10% OFF 
Phone Price: $20.29
Water Heater Propane Gas Control Valve (replaces 182792, 182792-000, 9003408105)#11A

Water heater Diagram

Control valve

Part #182792-000
Replaced by #9003408005
?
Manufacturer substitution
This part replaces 182792-000. Substitute parts can look different from the original.
In Stock
$307.99 | 
$10.00 OFF 
Phone Price: $317.99
Water Heater Burner#4

Water heater Diagram

Burner head

Part #183504-000
Replaced by #9003385005
?
Manufacturer substitution
This part replaces 183504-000. Substitute parts can look different from the original.
In Stock
$21.67 | 
19% OFF 
Phone Price: $26.67
Burner Tube#6A

Water heater Diagram

Burner tube

Part #184825-000
In Stock
$20.49
Burner Tube#6

Water heater Diagram

Burner tube

Part #184823-000
In Stock
$20.49

Symptoms common to all water heaters

Choose a symptom to see related water heater repairs.

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
Main causes: faulty pressure relief valve, water is overheating
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failure, bad thermocouple
Main causes: water supply needs chlorine treatment, anode rod too reactive
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

Articles and videos common to all 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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Cleaning your appliances after a drinking water advisory

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August 01, 2015

Easy DIY water heater repairs

Easy DIY water heater repairs

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