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Thermar
Electric Water Heater

Model # K-I-0I-10M Official Thermar tankless water heater

Here are the diagrams and repair parts for Official Thermar K-I-0I-10M tankless water heater, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 39 parts  |
Igniter 239-37337-00
#30

Replacement parts diagram

Igniter

Part #239-37337-00

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

Blade Assembly 239-37327-00
#9

Replacement parts diagram

Blade assembly

Part #239-37327-00

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

Louver Assembly 239-37330-00
#7

Replacement parts diagram

Louver assembly

Part #239-37330-00

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

O-ring 239-37366-00
#6

Replacement parts diagram

O-ring

Part #239-37366-00

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

Thermostat Knob 239-37335-00

#NI

All parts diagram

Thermostat knob

Part #239-37335-00

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

Pilot Assembly 239-37379-00
#27

Replacement parts diagram

Pilot assembly

Part #239-37379-00

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

Drfthd Assy 239-37374-00
#2

Replacement parts diagram

Drfthd assy

Part #239-37374-00

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

Burner Orifice 239-37375-00
#10

Replacement parts diagram

Burner orifice

Part #239-37375-00

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

Flange 239-37347-00
#5

Replacement parts diagram

Flange

Part #239-37347-00

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

Housing Assembly 239-37320-00
#18

Replacement parts diagram

Housing assembly

Part #239-37320-00

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?

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