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Maytag
Gas Water Heater

Model # HM350NHDST Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HM350NHDST 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 40 parts  |
Gas Conversion Kit Valve 66001457
#17

Body diagram

Gas conversion kit valve

Part #66001457

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

Bracket, Manifold 66001461
#21

Body diagram

Bracket, manifold

Part #66001461

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

Burner Orifice 66001433
#14C

Body diagram

Burner orifice

Part #66001433

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

Manifold 66001026
#15

Body diagram

Manifold

Part #66001026

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

Wing Nut 66001459
#19

Body diagram

Wing nut

Part #66001459

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

Kit, Roof Jack Vent (95") (non-illus) 66001452
#3C

Body diagram

Kit, roof jack vent (95") (non-illus)

Part #66001452

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

Burner Orifice 66001167
#14B

Body diagram

Burner orifice

Part #66001167

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

Thermocouple 66001273
#12

Body diagram

Thermocouple

Part #66001273

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

Tube, Diffuser Dip (w/nipple) 66001419
#9

Body diagram

Tube, diffuser dip (w/nipple)

Part #66001419

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

Kit, Roof Jack Vent (60") (non-illus) 66001451
#3B

Body diagram

Kit, roof jack vent (60") (non-illus)

Part #66001451

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 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 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 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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