Thermar
Gas Water Heater

Model #TL200 Thermar tankless water heater

Here are the diagrams and repair parts for Thermar TL200 tankless water heater, as well as links to manuals and error code tables, if available.

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Error Codes

    Showing 10 of 34 parts

    Injector Liquid Propane#9A

    Gas burners and manifold Diagram

    Injector liquid propane

    Part #19-12782

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

    Ch/he Assy#2

    Combustion chamber and cabinet Diagram

    Ch/he assy

    Part #10-14689

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

    Button#22

    Gas burners and manifold Diagram

    Button

    Part #10-14641

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

    Thermocouple#11

    Gas burners and manifold Diagram

    Thermocouple

    Part #10-13848

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

    Nut#4

    Combustion chamber and cabinet Diagram

    Nut

    Part #10-12212

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

    Cover Assembly#7

    Combustion chamber and cabinet Diagram

    Cover assembly

    Part #10-14784

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

    In/fil Assy#20

    Gas burners and manifold Diagram

    In/fil assy

    Part #10-12872

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

    O-Ring#27

    Gas burners and manifold Diagram

    O-ring

    Part #20-12335

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

    Igniter#21

    Gas burners and manifold Diagram

    Igniter

    Part #10-11935

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

    O-Ring#28

    Gas burners and manifold Diagram

    O-ring

    Part #20-14834

    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.

    August 18, 2021

    Wiring schematic symbols explained video

    By Sears PartsDirect staff

    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.

    August 1, 2015

    Easy DIY water heater repairs

    By Sears PartsDirect staff

    Read about some water heater repairs that you can easily do yourself.