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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  |
Buter Case PM-12
#8

Replacement parts diagram

Buter case

Part #PM-12

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

Pilot Assembly 239-37380-00
#28

Replacement parts diagram

Pilot assembly

Part #239-37380-00

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

Interrupter 239-37349-00

#NI

All parts diagram

Interrupter

Part #239-37349-00

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

Pilot Tube 239-37348-00
#29

Replacement parts diagram

Pilot tube

Part #239-37348-00

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

Valve Assembly 239-37345-00
#17

Replacement parts diagram

Valve assembly

Part #239-37345-00

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

Eco Assy 239-37317-00
#20

Replacement parts diagram

Eco assy

Part #239-37317-00

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

Stop Button 239-3733-00
#33

Replacement parts diagram

Stop button

Part #239-3733-00

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

Chassis Assembly 239-37382-00
#1

Replacement parts diagram

Chassis assembly

Part #239-37382-00

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

Sensing Bulb 239-37323-00
#22

Replacement parts diagram

Sensing bulb

Part #239-37323-00

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

Reg W/valve 239-317329-00
#34

Replacement parts diagram

Reg w/valve

Part #239-317329-00

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?

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

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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…

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How to replace an electric water heater anode rod

How to replace an electric water heater anode rod

If your hot water begins to smell like rotten eggs, replace the anode rod with a zinc-aluminum anode rod following the i…

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Time required
 15 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…

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Repair difficulty
Time required
 30 minutes or less

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How to read a wiring schematic video

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