Maytag
Gas Water Heater

Model # HJ640NBDS Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HJ640NBDS water heater, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 88 parts  |

Vent Wall 9000724
#23

Body diagram

Vent wall

Part #9000724

Replaced by #66001214

?
Manufacturer substitution
This part replaces 9000724. Substitute parts can look different from the original.
In Stock
Burner Orifice 0230223
#9C

Body diagram

Burner orifice

Part #0230223

Replaced by #Y0230223

?
Manufacturer substitution
This part replaces 0230223. Substitute parts can look different from the original.
This item is not returnable
In Stock
Vent Cap Assembly 9000725
#24

Body diagram

Vent cap assembly

Part #9000725

Replaced by #66001215

?
Manufacturer substitution
This part replaces 9000725. Substitute parts can look different from the original.
In Stock
Collar Liner 9000723
#22

Body diagram

Collar liner

Part #9000723

Replaced by #66001213

?
Manufacturer substitution
This part replaces 9000723. Substitute parts can look different from the original.
In Stock
Burner Orifice 0230225
#9E

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
Pilot W/electrode (lp) 66001473
#11A

Body (models with piezo ignitor) diagram

Pilot w/electrode (lp)

Part #66001473

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

Manifold 9002415
#6A

Body diagram

Manifold

Part #9002415

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

Tube Pilot 66001188
#8

Body (models with piezo ignitor) diagram

Tube pilot

Part #66001188

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

Burner Orifice 66001041
#4C

Body (models with piezo ignitor) diagram

Burner orifice

Part #66001041

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

Flu Adapter 66001237
#21A

Body (models with piezo ignitor) diagram

Flu adapter

Part #66001237

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

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

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

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.

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.…

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.…

Easy DIY water heater repairs

Easy DIY water heater repairs

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