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Maytag
Gas Water Heater

Model # HJ640NOVIT2 Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HJ640NOVIT2 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 37 parts  |
Ignitor, Hot Surface 66001525
#19

Body diagram

Ignitor, hot surface

Part #66001525

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

Stand, Water 66001243
#25

Body diagram

Stand, water

Part #66001243

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

Manifold (nat) 66001653
#18C

Body diagram

Manifold (nat)

Part #66001653

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

Control, Gas (lp) 66001656
#9C

Body diagram

Control, gas (lp)

Part #66001656

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

Draft Blower 66001366
#3

Body diagram

Draft blower

Part #66001366

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

Inner Door 66001029
#15

Body diagram

Inner door

Part #66001029

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

Manifold (lp) 66001531
#18A

Body diagram

Manifold (lp)

Part #66001531

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

Control, Gas (nat) 66001655
#9B

Body diagram

Control, gas (nat)

Part #66001655

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

Drain Valve 66001181
#14A

Body diagram

Drain valve

Part #66001181

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

Air Switch 66001369
#7

Body diagram

Air switch

Part #66001369

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 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 does my hot water smell like rotten eggs?

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

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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 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 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 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 enough hot water?

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

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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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