Gas Water Heater

Model # HJ640NOVETCGA Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HJ640NOVETCGA water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for
HJ640NOVETCGA Water Heaters
Manifold (na 66001386
#19B

Body diagram

Manifold (na

Part #66001386

Replaced by #66001386

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Manufacturer substitution
This part replaces 66001386. Substitute parts can look different from the original.
In Stock
Temperature Valve 66001079
#12

Body diagram

Temperature valve

Part #66001079

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

Drain Valve 66001016
#13

Body diagram

Drain valve

Part #66001016

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

Burner 66001027
#17

Body diagram

Burner

Part #66001027

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

Draft Blower 66001366
#9

Body diagram

Draft blower

Part #66001366

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

Stand, Water 66001243
#14

Body diagram

Stand, water

Part #66001243

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

Manifold Liquid Propane 66001387
#19C

Body diagram

Manifold liquid propane

Part #66001387

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

Cover, Air P 66001258
#23

Body diagram

Cover, air p

Part #66001258

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

Dip Tube 66001307
#10

Body diagram

Dip tube

Part #66001307

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

Gas Conversion Kit Valve 66001296
#20A

Body diagram

Gas conversion kit valve

Part #66001296

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.

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

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

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

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

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

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

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

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.

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.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…

Water heater common questions

Water heater common questions

These common questions and answers can help you make the most of your water heater.…