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Maytag
Gas Water Heater

Model # HR640HOCT Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HR640HOCT water heater, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 51 parts  |
Dip Tube 66001646
#23

Body diagram

Dip tube

Part #66001646

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

Burner Tube 66001497
#4A

Body diagram

Burner tube

Part #66001497

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

Pilot Assembly (high Altitude) 66001548
#5C

Body diagram

Pilot assembly (high altitude)

Part #66001548

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

Gasket, Inner Door 66001500
#7

Body diagram

Gasket, inner door

Part #66001500

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

Use And Care Manual 66001816
#24

Body diagram

Use and care manual

Part #66001816

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

Burner Head 66001511
#2A

Body diagram

Burner head

Part #66001511

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

Pilot Assembly (standard) 66001517
#5A

Body diagram

Pilot assembly (standard)

Part #66001517

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

Burner Head 66001494
#2

Body diagram

Burner head

Part #66001494

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

Insulation, T & P 66001709
#16

Body diagram

Insulation, t & p

Part #66001709

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

Orifice, Burner (#51) (both Standard & High Alt) 66001515
#3

Body diagram

Orifice, burner (#51) (both standard & high alt)

Part #66001515

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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