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Gas Water Heater

Model # 5-40-NKRS8-2 Official Sentry gas water heater

Here are the diagrams and repair parts for Official Sentry 5-40-NKRS8-2 gas water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for5-40-NKRS8-2 Water Heaters

  • Anode Rod 9000705
    #6

    Functional replacement parts diagram

    Anode rod

    Part #9000705

    Replaced by #100300397

    ?
    Manufacturer substitution
    This part replaces 9000705. Substitute parts can look different from the original.
    $89.10
    6% OFF Phone Price : $95.10
    In Stock
  • Pilot 9000284
    #15

    Functional replacement parts diagram

    Pilot

    Part #9000284

    Replaced by #100109070

    ?
    Manufacturer substitution
    This part replaces 9000284. Substitute parts can look different from the original.
    Back Order
  • Dip Tube 9001839
    #5

    Functional replacement parts diagram

    Dip tube

    Part #9001839

    Replaced by #100108765

    ?
    Manufacturer substitution
    This part replaces 9001839. Substitute parts can look different from the original.
    In Stock
  • Wheelers Water Heater Temperature And Pressure Relief Valve 9000728
    #20

    Functional replacement parts diagram

    Wheelers water heater temperature and pressure relief valve

    Part #9000728

    Replaced by #100108455

    ?
    Manufacturer substitution
    This part replaces 9000728. Substitute parts can look different from the original.
    In Stock
  • Water Heater Manifold Inner Door 9000281
    #18

    Functional replacement parts diagram

    Water heater manifold inner door

    Part #9000281

    Replaced by #100108371

    ?
    Manufacturer substitution
    This part replaces 9000281. Substitute parts can look different from the original.
    In Stock
  • Drain Pan 9000743
    #26B

    Functional replacement parts diagram

    Drain pan

    Part #9000743

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

  • Ring 9000275
    #3

    Functional replacement parts diagram

    Ring

    Part #9000275

    Replaced by #100108369

    ?
    Manufacturer substitution
    This part replaces 9000275. Substitute parts can look different from the original.
    In Stock
  • Water Heater Thermocouple 9000283
    #14

    Functional replacement parts diagram

    Water heater thermocouple

    Part #9000283

    Replaced by #H06E-36

    ?
    Manufacturer substitution
    This part replaces 9000283. Substitute parts can look different from the original.
    $14.91
    12% OFF Phone Price : $16.91
    In Stock
  • Thermostat 9000249
    #9

    Functional replacement parts diagram

    Thermostat

    Part #9000249

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

  • Water Heater Burner 9000390
    #16A

    Functional replacement parts diagram

    Water heater burner

    Part #9000390

    Replaced by #100108399

    ?
    Manufacturer substitution
    This part replaces 9000390. Substitute parts can look different from the original.
    In Stock

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.…

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