Maytag
Gas Water Heater

Model # HN4940SCAN Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HN4940SCAN 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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Showing 8 of 8 parts  |

Valve, Drain-5/8" Shank - Series 10 66001080
#3

Body diagram

Valve, drain-5/8" shank - series 10

Part #66001080

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

Draft Hood 66001032
#17

Body diagram

Draft hood

Part #66001032

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

Valve, Relief-5/8"shank - Series 10 66001079
#1

Body diagram

Valve, relief-5/8"shank - series 10

Part #66001079

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

Manual, Use & Care - Series 9 66001097
#17B

Body diagram

Manual, use & care - series 9

Part #66001097

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

Tank, Expansion (2 Gal.) - Series 10 66001013
#17A

Body diagram

Tank, expansion (2 gal.) - series 10

Part #66001013

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

Dip Tube 66001030
#15

Body diagram

Dip tube

Part #66001030

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

Burner Orifice - Series 10 0230141
#9A

Body diagram

Burner orifice - series 10

Part #0230141

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

Baffle, Flue - Series 10 9002649
#16A

Body diagram

Baffle, flue - series 10

Part #9002649

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

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.…