Gas Water Heater

Model # GCVH40L Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GCVH40L water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for
GCVH40L Water Heaters
Burner Tube 184823-000
#6

Water heater diagram

Burner tube

Part #184823-000

In Stock
Burner Tube 184825-000
#6A

Water heater diagram

Burner tube

Part #184825-000

In Stock
Inlet Tube 183776-033
#13

Water heater diagram

Inlet tube

Part #183776-033

Replaced by #100109239

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Manufacturer substitution
This part replaces 183776-033. Substitute parts can look different from the original.
In Stock
Drain Pan 23914-A
#26B

Water heater diagram

Drain pan

Part #23914-A

Replaced by #100108615

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Manufacturer substitution
This part replaces 23914-A. Substitute parts can look different from the original.
In Stock
Orifice 181791-050
#5A

Water heater diagram

Orifice

Part #181791-050

Replaced by #100109268

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Manufacturer substitution
This part replaces 181791-050. Substitute parts can look different from the original.
In Stock
Drain Pan 23912-A
#26

Water heater diagram

Drain pan

Part #23912-A

Replaced by #100108459

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Manufacturer substitution
This part replaces 23912-A. Substitute parts can look different from the original.
In Stock
Natural Gas Orifice 181508-033
#5

Water heater diagram

Natural gas orifice

Part #181508-033

Replaced by #100109266

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Manufacturer substitution
This part replaces 181508-033. Substitute parts can look different from the original.
In Stock
Pilot Assembly 183824-162
#19A

Water heater diagram

Pilot assembly

Part #183824-162

Replaced by #100109294

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Manufacturer substitution
This part replaces 183824-162. Substitute parts can look different from the original.
In Stock
Gasket 183162-000
#14

Water heater diagram

Gasket

Part #183162-000

Replaced by #100109214

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Manufacturer substitution
This part replaces 183162-000. Substitute parts can look different from the original.
In Stock
Restrictor 034894-000
#10

Water heater diagram

Restrictor

Part #034894-000

Replaced by #100110078

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Manufacturer substitution
This part replaces 034894-000. 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.

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

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

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

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

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.

How to read a wiring schematic video

How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.…

Easy DIY water heater repairs

Easy DIY water heater repairs

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

Water heater common questions

Water heater common questions

These common questions and answers can help you make the most of your water heater.…