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Thermar
Gas Water Heater

Model # TL200 Official Thermar tankless water heater

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

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 34 parts  |
Thermostat 10-13486
#18

Gas burners and manifold diagram

Thermostat

Part #10-13486

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

Man Assy Lp 10-13746
#25A

Gas burners and manifold diagram

Man assy lp

Part #10-13746

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

Button Assembly 10-14639
#24

Gas burners and manifold diagram

Button assembly

Part #10-14639

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

Flange 10-12213
#5

Combustion chamber and cabinet diagram

Flange

Part #10-12213

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

Case Assembly 10-13473
#1

Combustion chamber and cabinet diagram

Case assembly

Part #10-13473

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

Sensing Tube 10-13495
#26

Gas burners and manifold diagram

Sensing tube

Part #10-13495

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

O-ring 20-10047
O-ring

Part #20-10047

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

Insert 10-13846
#14

Gas burners and manifold diagram

Insert

Part #10-13846

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

Sensing Tube 10-14923
#26A

Gas burners and manifold diagram

Sensing tube

Part #10-14923

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

Manual Gasket 10-12848
#12

Gas burners and manifold diagram

Manual gasket

Part #10-12848

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

Most common symptoms to help you fix your water heaters

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Why isn't my water heater heating my water?

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu...

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Why is there water in my water heater's drain pan?

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,...

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Why does my hot water smell like rotten eggs?

Main causes: water supply needs chlorine treatment, anode rod too reactive...

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Why isn't my water heater making enough hot water?

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse...

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Why is my water heater's pressure relief valve dripping water?

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

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Why isn't my water heater making the water hot enough?

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess...

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Why is my water heater making the water too hot?

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

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How to read a wiring schematic video

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