American Water Heaters
Gas Water Heater

Model #L40S62-403 Official American Water Heaters water heater

Here are the diagrams and repair parts for 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:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manualError Codes

Showing 10 of 13 parts

Water Heater Burner Assembly

See All Related Diagrams

Water heater burner assembly

Part #6911167
BEST SELLER
In Stock
$89.50 | 
5% OFF 
Phone Price: $94.50
Water Heater Burner (replaces 100111320)#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.
In Stock
$48.83
Water Heater Electronic Control Board (replaces 100112339)#10

Water heater Diagram

In Stock
$190.72 | 
5% OFF 
Phone Price: $200.72
Water Heater Dip Tube#6

Water heater Diagram

In Stock
$28.09 | 
15% OFF 
Phone Price: $33.09
Water Heater Pilot and Igniter Assembly (replaces 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.
In Stock
$31.13 | 
14% OFF 
Phone Price: $36.13
Water Heater Drain Valve#9

Water heater Diagram

Drain valve

Part #6900820
Replaced by #9000058015
?
Manufacturer substitution
This part replaces 6900820. 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 Anode Rod (replaces 4700375, 9000279, 900029, 9000379, 9000707, 9001543)#7

Water heater Diagram

Anode rod

Part #4700375
Replaced by #9001453
?
Manufacturer substitution
This part replaces 4700375. Substitute parts can look different from the original.
In Stock
$84.82 | 
6% OFF 
Phone Price: $89.82
Temperature and Pressure Valve#8

Water heater Diagram

Temperature and pressure valve

Part #6900828

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

Outer Door#11

Water heater Diagram

Outer door

Part #321345-000

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

Draft Hood#1

Water heater Diagram

Draft hood

Part #185917-003

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

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