Model # FG12140S403NOV Official American Water Heaters water heater

Here are the diagrams and repair parts for Official American Water Heaters FG12140S403NOV water heater, as well as links to manuals and error code tables, if available.

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Owner’s manual

Error Codes

Model diagram and schematic

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Showing 6 of 6 parts |

Water Heater Igniter Assembly (replaces 100093756) 6910561

#12A

Water heater diagram

Water heater igniter assembly (replaces 100093756)

Part #6910561

$60.49 |

9% OFF Phone Price : $66.49

In Stock

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#10

Water heater diagram

Water heater natural gas valve

Part #6910555

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

#12

Water heater diagram

Water heater gas control valve

Part #6910817

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

#17

Water heater diagram

Door

Part #6910581

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

#16

Water heater diagram

Door

Part #6910580

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

#NI

Water heater diagram

Shttr scrw

Part #4100143

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

Most common symptoms to help you fix your water heaters

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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…

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,…

Why does my hot water smell like rotten eggs?

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

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…

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

Main causes: faulty pressure relief valve, water is overheating…

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…

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…

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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Model # FG12140S403NOV Official American Water Heaters water heater

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Most common symptoms to help you fix your water heaters

Why isn't my water heater heating my water?

Why is there water in my water heater's drain pan?

Why does my hot water smell like rotten eggs?

Why isn't my water heater making enough hot water?

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

Why isn't my water heater making the water hot enough?

Why is my water heater making the water too hot?

Effective articles & videos to help repair your water heaters

How to read a wiring schematic video

Easy DIY water heater repairs

Water heater common questions

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