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Maytag
Gas Water Heater

Model # HV640COCT Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HV640COCT gas 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 33 parts  |
Dip Tube 66001646
#20

Body diagram

Dip tube

Part #66001646

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

Orifice, Burner (#50) (standard) 66001540
#3C

Body diagram

Orifice, burner (#50) (standard)

Part #66001540

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

Pilot 66001550
#5B

Body diagram

Pilot

Part #66001550

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

Gas Control Valve 66001576
#12A

Body diagram

Gas control valve

Part #66001576

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

Outer Door 66001506
#15

Body diagram

Outer door

Part #66001506

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

Burner Tube 66001581
#4A

Body diagram

Burner tube

Part #66001581

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

Orifice, Burner (#35) (high Altitude) 66001537
#3A

Body diagram

Orifice, burner (#35) (high altitude)

Part #66001537

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

Viewport Assembly 66001509
#19

Body diagram

Viewport assembly

Part #66001509

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

Burner Assembly 66001626
#1B

Body diagram

Burner assembly

Part #66001626

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

Drain Valve 66001647
#13

Body diagram

Drain valve

Part #66001647

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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