Thermar
Gas Water Heater

Model # PM1000 Official Thermar tankless water heater

Here are the diagrams and repair parts for Official Thermar PM1000 tankless water heater, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 39 parts  |

Sensing Tube 239-37332-00
#25

Replacement parts diagram

Sensing tube

Part #239-37332-00

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

Gasket 239-37368-00
#16

Replacement parts diagram

Gasket

Part #239-37368-00

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

Regulator 239-37370-00
#35

Replacement parts diagram

Regulator

Part #239-37370-00

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

Start Button 239-37321-00
#32

Replacement parts diagram

Start button

Part #239-37321-00

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

Control Valve 239-37319-00
#14

Replacement parts diagram

Control valve

Part #239-37319-00

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

Valve 239-37340-00
#21

Replacement parts diagram

Valve

Part #239-37340-00

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

Electrode 239-37318-00
#15

Replacement parts diagram

Electrode

Part #239-37318-00

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

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

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

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

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