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Maytag
Gas Water Heater

Model # HJ640NBPDT Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HJ640NBPDT 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 42 parts  |
Air Switch 66001313
#12

Body diagram

Air switch

Part #66001313

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

Switch Vent 66001342
#7

Body diagram

Switch vent

Part #66001342

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

Flue Baffle 66001331
#11A

Body diagram

Flue baffle

Part #66001331

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

Burner Orifice 66001171
#24C

Body diagram

Burner orifice

Part #66001171

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

Burner Orifice 66001041
#24B

Body diagram

Burner orifice

Part #66001041

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

Power Cord 66001372
#16

Body diagram

Power cord

Part #66001372

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

Control, Gas (lp) 66001528
#15A

Body diagram

Control, gas (lp)

Part #66001528

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

Wall Collar 66001343
#2

Body diagram

Wall collar

Part #66001343

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

Control, Gas (nat) 66001527
#15

Body diagram

Control, gas (nat)

Part #66001527

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

Burner Orifice 66001035
#24A

Body diagram

Burner orifice

Part #66001035

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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