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Maytag
Gas Water Heater

Model # HR640HBRT Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HR640HBRT 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 48 parts  |
Nipple (w/he 66001705
#12

Body diagram

Nipple (w/he

Part #66001705

Replaced by #66001705

?
Manufacturer substitution
This part replaces 66001705. Substitute parts can look different from the original.
$21.67
In Stock
Inner Door 66001595
#6B

Body diagram

Inner door

Part #66001595

Replaced by #66001595

?
Manufacturer substitution
This part replaces 66001595. Substitute parts can look different from the original.
$46.44
In Stock
Dip Tube 66001303
#23

Body diagram

Dip tube

Part #66001303

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

Burner Assembly (standard) 66001491
#1

Body diagram

Burner assembly (standard)

Part #66001491

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

Orifice, Burner (#35) (high Altitude) 66001537
#3A

Body diagram

Orifice, burner (#35) (high altitude)

Part #66001537

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

Valve, T & P Relief 66001760
#14

Body diagram

Valve, t & p relief

Part #66001760

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

Drain Valve 66001016
#20

Body diagram

Drain valve

Part #66001016

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

Pilot Assembly (both Standard & High Alt) 66001519
#5A

Body diagram

Pilot assembly (both standard & high alt)

Part #66001519

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

Orifice, Burner (#33) (standard) 66001538
#3B

Body diagram

Orifice, burner (#33) (standard)

Part #66001538

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

Burner Tube 66001521
#4C

Body diagram

Burner tube

Part #66001521

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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