Water Heater

Model # 8-40-1AT47 Official Thermo-King electric water heater

Here are the diagrams and repair parts for Official Thermo-King 8-40-1AT47 electric water heater, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for8-40-1AT47 Electric Water Heater

  • Water Heater Temperature And Pressure Relief Valve 9000071
    #2

    Functional replacement parts diagram

    Water heater temperature and pressure relief valve

    Part #9000071

    $22.29
    21% OFF Phone Price : $28.29
    In Stock
  • Thermostat 9000507
    #14

    Functional replacement parts diagram

    Thermostat

    Part #9000507

    In Stock
  • Thermostat 9000508
    #12

    Functional replacement parts diagram

    Thermostat

    Part #9000508

    Replaced by #9000509015

    ?
    Manufacturer substitution
    This part replaces 9000508. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
  • Water Heater Thermostat Bracket 9000309
    #9

    Functional replacement parts diagram

    Water heater thermostat bracket

    Part #9000309

    Replaced by #100108380

    ?
    Manufacturer substitution
    This part replaces 9000309. Substitute parts can look different from the original.
    In Stock
  • Anode Rod 9001834
    #4

    Functional replacement parts diagram

    Anode rod

    Part #9001834

    Replaced by #100109434

    ?
    Manufacturer substitution
    This part replaces 9001834. Substitute parts can look different from the original.
    In Stock
  • Water Heater Heating Element Gasket 9000308
    #8

    Functional replacement parts diagram

    Water heater heating element gasket

    Part #9000308

    Replaced by #9000308005

    ?
    Manufacturer substitution
    This part replaces 9000308. Substitute parts can look different from the original.
    $30.62
    16% OFF Phone Price : $36.62
    In Stock
  • Anode Rod 9000705
    #3

    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.
    $56.92
    10% OFF Phone Price : $62.92
    In Stock
  • Thermostat 9000510
    #5

    Functional replacement parts diagram

    Thermostat

    Part #9000510

    Replaced by #9001954015

    ?
    Manufacturer substitution
    This part replaces 9000510. Substitute parts can look different from the original.
    In Stock
  • Water Heater Drain Valve 9000254
    #16

    Functional replacement parts diagram

    Water heater drain valve

    Part #9000254

    Replaced by #100108361

    ?
    Manufacturer substitution
    This part replaces 9000254. Substitute parts can look different from the original.
    In Stock
  • Cooktop Main Top 9000336
    #1

    Functional replacement parts diagram

    Cooktop main top

    Part #9000336

    Replaced by #100066374

    ?
    Manufacturer substitution
    This part replaces 9000336. 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: 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: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Main causes: faulty pressure relief valve, water is overheating…

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,…

Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

Repair difficulty
Time required
 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Repair difficulty
Time required
 15 minutes or less

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.…