Rheem
Gas Water Heater

Model #44X40-1 Official Rheem 40-gallon gas water heater

Here are the diagrams and repair parts for Rheem 44X40-1 40-gallon gas water heater, as well as links to manuals and error code tables, if available.

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Error Codes

    Showing 10 of 17 parts

    Thrmcouple#6

    Thermostat and burner Diagram

    Thrmcouple

    Part #AP-6379-F

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

    Water Heater LP Pilot Burner#5A

    Thermostat and burner Diagram

    Burner

    Part #AP-8980-C
    Replaced by #SP8980C
    ?
    Manufacturer substitution
    This part replaces AP-8980-C. Substitute parts can look different from the original.
    In Stock
    $34.03
    PILOT BURNER, L.P. GAS#5

    Liquefied petroleum gas models (with cast iron burner) Diagram

    Pilot burner, l.p. gas

    Part #AP-8915-C

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

    Burner Supply Tube#2

    Liquefied petroleum gas models (with cast iron burner) Diagram

    Burner supply tube

    Part #AP-5216-P

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

    BURNER AIR SHUTTER#8

    Liquefied petroleum gas models (with cast iron burner) Diagram

    Burner air shutter

    Part #AS-25789

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

    THERMOSTAT, L.P. GAS

    See All Related Diagrams

    Thermostat, l.p. gas

    Part #AP-8456-D

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

    Pilot Supply Tube#4

    Thermostat and burner Diagram

    Pilot supply tube

    Part #AS-35137-H

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

    ORIFICE, BURNER (L.P. GAS) (WHEN ORDERING THIS PART, THE MODEL, TYPE OF GAS, AND SERIAL NUMBER MUST BE INCLUDED)

    See All Related Diagrams

    Orifice, burner (l.p. gas) (when ordering this part, the model, type of gas, and serial number must be included)

    Part #AP-7492

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

    PILOT BURNER, NATURAL GAS#5

    Thermostat and burner Diagram

    Pilot burner, natural gas

    Part #AS-8980-B

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

    Pilot Supply Tube#4

    Liquefied petroleum gas models (with cast iron burner) Diagram

    Pilot supply tube

    Part #AE-36159

    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.