Maytag
Gas Water Heater

Model # HJ640NORSCGA Official Maytag water heater

Here are the diagrams and repair parts for Official Maytag HJ640NORSCGA 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 10 of 31 parts  |

Anode Rod 66001157
#4

Body diagram

Anode rod

Part #66001157

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

Drain Valve 66001181
#6A

Body diagram

Drain valve

Part #66001181

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

Burner Orifice 66001161
#11

Body diagram

Burner orifice

Part #66001161

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

Natural Gas Pilot 66001023
#8

Body diagram

Natural gas pilot

Part #66001023

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

Manifold 66001326
#12

Body diagram

Manifold

Part #66001326

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

Drain Valve 66001016
#6

Body diagram

Drain valve

Part #66001016

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

Water Heater Temperature And Pressure Relief Valve 66001216
#5A

Body diagram

Water heater temperature and pressure relief valve

Part #66001216

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

Gas Conversion Kit Valve 66001410
#14C

Body diagram

Gas conversion kit valve

Part #66001410

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

Draft Hood 66001032
#1

Body diagram

Draft hood

Part #66001032

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

Dip Tube 66001304
#3

Body diagram

Dip tube

Part #66001304

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

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: 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.…