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American Water Heaters
Gas Water Heater

Model # L40S62-403 Official American Water Heaters water heater

Here are the diagrams and repair parts for Official American Water Heaters L40S62-403 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.

Owner’s manual
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 13 parts  |
Water Heater Pilot And Igniter Assembly 6911144
#12

Water heater diagram

Water heater pilot and igniter assembly

Part #6911144

Replaced by #100093983

?
Manufacturer substitution
This part replaces 6911144. Substitute parts can look different from the original.
$56.92
| 
10% OFF Phone Price : $62.92
In Stock
American Water Heaters Water Heater Electronic Control Board (replaces 100112339) 6911136
#10

Water heater diagram

American water heaters water heater electronic control board (replaces 100112339)

Part #6911136

$178.03
| 
6% OFF Phone Price : $190.03
In Stock
Anode Rod 4700375
#7

Water heater diagram

Anode rod

Part #4700375

Replaced by #100108571

?
Manufacturer substitution
This part replaces 4700375. Substitute parts can look different from the original.
$90.00
In Stock
Temperature And Pressure Valve 6900828
#8

Water heater diagram

Temperature and pressure valve

Part #6900828

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

Water Heater Burner Assembly 6911167
Water heater burner assembly

Part #6911167

Replaced by #100094004

?
Manufacturer substitution
This part replaces 6911167. Substitute parts can look different from the original.
$198.00
In Stock
Drain Valve 6900820
#9

Water heater diagram

Drain valve

Part #6900820

Replaced by #100108269

?
Manufacturer substitution
This part replaces 6900820. Substitute parts can look different from the original.
$18.57
In Stock
L.p. Cast Burner 185913-000
#13B

Water heater diagram

L.p. cast burner

Part #185913-000

Replaced by #9006603005

?
Manufacturer substitution
This part replaces 185913-000. Substitute parts can look different from the original.
$48.83
In Stock
Water Heater Dip Tube 4710743
#6

Water heater diagram

Water heater dip tube

Part #4710743

Replaced by #100110924

?
Manufacturer substitution
This part replaces 4710743. Substitute parts can look different from the original.
$24.44
In Stock
Outer Door 321345-000
#11

Water heater diagram

Outer door

Part #321345-000

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

Draft Hood 185917-003
#1

Water heater diagram

Draft hood

Part #185917-003

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

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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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

How to read a wiring schematic video

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

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Easy DIY water heater repairs

Easy DIY water heater repairs

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

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Water heater common questions

Water heater common questions

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

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