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Maytag
Gas Water Heater

Model # HR640YOCT Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HR640YOCT 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

Gas Conversion Kit Valve 66001504
#18

Body diagram

Gas conversion kit valve

Part #66001504

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

Burner Assembly 66001633
#1D

Body diagram

Burner assembly

Part #66001633

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

Gas Control Valve 66001575
#18B

Body diagram

Gas control valve

Part #66001575

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

Flue Baffle 66001501
#9

Body diagram

Flue baffle

Part #66001501

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

Burner Assembly 66001634
#1E

Body diagram

Burner assembly

Part #66001634

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

Shield, Thermostat 66001667
#19

Body diagram

Shield, thermostat

Part #66001667

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 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 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 making the water too hot?

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

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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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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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Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

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Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

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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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