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Maytag
Electric Water Heater

Model # HRE3940L Official Maytag electric water heater

Here are the diagrams and repair parts for Official Maytag HRE3940L electric 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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Showing 10 of 22 parts  |
Nipple (w/he 66001705
#22

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
Use And Care Manual 66001711
#24

Body diagram

Use and care manual

Part #66001711

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

Bracket, The 66001054
#9

Body diagram

Bracket, the

Part #66001054

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

Terminal Cover 66001064
#16

Body diagram

Terminal cover

Part #66001064

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

Drain Valve 66001015
#4

Body diagram

Drain valve

Part #66001015

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

Insulation, Pipe 66001708
#23

Body diagram

Insulation, pipe

Part #66001708

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

Terminal Cover 66001272
#13

Body diagram

Terminal cover

Part #66001272

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

Valve, T & P Relief 66001682
#1

Body diagram

Valve, t & p relief

Part #66001682

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

Insulation, T & P 66001709
#2

Body diagram

Insulation, t & p

Part #66001709

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

Thermostat 66001008
#12

Body diagram

Thermostat

Part #66001008

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 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's pressure relief valve dripping water?

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

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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 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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Repair guides for electric water heaters

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How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater anode rod

How to replace an electric water heater anode rod

If your hot water begins to smell like rotten eggs, replace the anode rod with a zinc-aluminum anode rod following the i…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

Read more
Repair difficulty
Time required
 30 minutes or less

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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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.…

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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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Water heater common questions

Water heater common questions

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

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