Gas Water Heater

Model # HJ640NOVET Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HJ640NOVET gas water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for
HJ640NOVET Water Heaters
Manifold (na 9003137
#19B

Body diagram

Manifold (na

Part #9003137

Replaced by #66001386

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Manufacturer substitution
This part replaces 9003137. Substitute parts can look different from the original.
In Stock
Burner Orifice 0230225
#18

Body diagram

Burner orifice

Part #0230225

Replaced by #Y0230225

?
Manufacturer substitution
This part replaces 0230225. Substitute parts can look different from the original.
This item is not returnable
In Stock
Water Heater Exhaust Vent Blower Assembly 9003081
#9

Body diagram

Water heater exhaust vent blower assembly

Part #9003081

Replaced by #100109099

?
Manufacturer substitution
This part replaces 9003081. Substitute parts can look different from the original.
In Stock
Washer, Drai 66001021
#13B

Body diagram

Washer, drai

Part #66001021

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

Use And Care Manual 66001120
#25

Body diagram

Use and care manual

Part #66001120

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

Cover, Air P 9001971
#23

Body diagram

Cover, air p

Part #9001971

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

Flue Baffle 9003093
#5

Body diagram

Flue baffle

Part #9003093

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

Wall Collar 9001993
#2

Body diagram

Wall collar

Part #9001993

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

Power Cord 9003095
#6

Body diagram

Power cord

Part #9003095

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

Burner Orifice 66001041
#18C

Body diagram

Burner orifice

Part #66001041

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

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

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

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

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

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

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

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.…