Maytag
Gas Water Heater

Model #HJ640NORTCGA Official Maytag water heater

Here are the diagrams and repair parts for Maytag HJ640NORTCGA water heater, as well as links to manuals and error code tables, if available.

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Error Codes

    Showing 10 of 33 parts

    Tubing Pilot#10A

    Body Diagram

    Tubing pilot

    Part #66001276

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

    Drain Valve#6

    Body Diagram

    Drain valve

    Part #66001016

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

    Burner#13

    Body Diagram

    Burner

    Part #66001027

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

    Gas Conversion Kit Valve#14A

    Body Diagram

    Gas conversion kit valve

    Part #66001078

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

    Burner Orifice#11A

    Body Diagram

    Burner orifice

    Part #66001167

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

    Drain Valve#6A

    Body Diagram

    Drain valve

    Part #66001181

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

    Flue Baffle#2A

    Body Diagram

    Flue baffle

    Part #66001382

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

    Burner Orifice#11C

    Body Diagram

    Burner orifice

    Part #66001171

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

    Anode Rod#4

    Body Diagram

    Anode rod

    Part #66001189

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

    Flue Baffle#2

    Body Diagram

    Flue baffle

    Part #66001220

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

    Symptoms common to all 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 failure, bad thermocouple
    Main causes: water supply needs chlorine treatment, anode rod too reactive
    Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
    Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
    Main causes: faulty pressure relief valve, water is overheating
    Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
    Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

    Articles and videos common to all water heaters

    Use the advice and tips in these articles and videos to get the most out of your water heater.

    October 24, 2022

    Easy DIY appliance repairs that anyone can do

    By Lyle Weischwill

    Get advice on simple DIY fixes for appliances that you can safely do on your own.

    August 18, 2021

    Wiring schematic symbols explained video

    By Lyle Weischwill

    Learn some of the most common symbols found in a wiring diagram and what they mean.

    April 10, 2020

    Cleaning your appliances after a drinking water advisory

    By Julie Riebe

    Find out how to clean and flush household appliances once a boil water advisory is lifted.