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Model # HJ640NBPDT Official Maytag gas water heater
Here are the diagrams and repair parts for Official Maytag HJ640NBPDT gas water heater, as well as links to manuals and error code tables, if available.
Error CodesBy Schematic
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Browse Parts for
HJ640NBPDT Water Heaters
#29A
Body diagram
Anode rod
Part #66001189
The manufacturer no longer makes this part, and there's no substitute part
#27
Body diagram
Water heater temperature and pressure relief valve
Part #66001216
The manufacturer no longer makes this part, and there's no substitute part
#1
Body diagram
Ve terminal
Part #66001255
The manufacturer no longer makes this part, and there's no substitute part
#14
Body diagram
Mounting bracket
Part #66001295
The manufacturer no longer makes this part, and there's no substitute part
#21
Body diagram
Inner door
Part #66001029
The manufacturer no longer makes this part, and there's no substitute part
#26
Body diagram
Wiring harness
Part #66001526
The manufacturer no longer makes this part, and there's no substitute part
#10
Body diagram
Baffle adapt
Part #66001315
The manufacturer no longer makes this part, and there's no substitute part
#12A
Body diagram
Air switch
Part #66001332
The manufacturer no longer makes this part, and there's no substitute part
#18
Body diagram
Access door
Part #66001206
The manufacturer no longer makes this part, and there's no substitute part
#3
Body diagram
Ven adapter
Part #66001289
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.
Learn some of the most common symbols found in a wiring diagram and what they mean.…
Find out what’s wrong with your appliance by following a circuit.…
Read about some water heater repairs that you can easily do yourself.…