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Thorm Em
Gas Water Heater

Model # EM1-PM1000 Official Thorm Em tankless water heater

Here are the diagrams and repair parts for Official Thorm Em EM1-PM1000 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 39 parts  |
Valve Body 239-37381-00
#23

Replacement parts diagram

Valve body

Part #239-37381-00

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

Manifold Assembly 239-37343-00
#12A

Replacement parts diagram

Manifold assembly

Part #239-37343-00

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 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

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

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

Ig Button 239-37334-00
#31

Replacement parts diagram

Ig button

Part #239-37334-00

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

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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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 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 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 making the water too hot?

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

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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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Effective articles & videos to help repair your water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

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Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

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Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

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Easy DIY water heater repairs

Easy DIY water heater repairs

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

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