Swimables SW-41-024 stack flue sensor for MasterTemp and Max-E-Therm heatersSwimables Generic Stack Flue Sensor for MasterTemp and Max-E-Therm Heaters, SW-41-024 In stock$6199
Swimables SW-41-024 stack flue sensor for MasterTemp and Max-E-Therm heaters
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Swimables Generic Stack Flue Sensor for MasterTemp and Max-E-Therm Heaters, SW-41-024

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$6199
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Quick overview

  • Direct replacement Made to take the place of the original stack flue sensor on MasterTemp and Max-E-Therm heaters.
  • Aftermarket alternative A Swimables part rather than the factory sensor, for owners who want the lower cost option.
  • Watches flue temperature The stack sensor reports exhaust temperature to the control board, which uses it as a safety input.
  • A common fault code source Stack sensor failures are one of the standard reasons these heaters shut down and post a service code.
  • Sensor only Supplied as the sensor. Thermistors, high limit switches and control boards are separate parts.
  • Straightforward swap It replaces the existing sensor in the same position without changes to the heater.
Full description and specifications ↓

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Product details

The Swimables SW-41-024 is an aftermarket stack flue sensor for MasterTemp and Max-E-Therm pool heaters. It replaces the original stack sensor in the same position.

What the stack sensor does

The stack sensor sits in the exhaust path and reports flue temperature back to the heater control board. That reading is a safety input. If the exhaust runs hotter than the heater is designed for, the board shuts things down before damage happens. A sensor that has failed sends a reading the board will not accept, and the heater locks out even though nothing else is wrong.

Aftermarket, not factory

This is a Swimables part rather than the manufacturer sensor. It is the lower cost route to the same repair. The genuine sensor is available separately if you would rather stay with the factory component.

Before you order

Check the connector and wiring first, since a corroded or loose plug produces the same fault as a dead sensor. This listing covers the stack flue sensor alone. Thermistors, high limit switches and control boards for these heaters are separate parts.

Specifications
Brand Swimables
Manufacturer part number SW-41-024
UPC 810108820352
Type Stack flue sensor
Fits MasterTemp and Max-E-Therm heaters
Part grade Aftermarket replacement
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Is this a genuine Pentair part?
No. It is a Swimables aftermarket sensor made to replace the original. The factory stack flue sensor is sold under its own part number.
Which heaters does it suit?
MasterTemp and Max-E-Therm heaters.
What does the stack sensor do?
It measures the temperature of the exhaust leaving the heater and reports it to the control board, which shuts the heater down if that reading goes out of range.
My heater keeps posting a stack sensor fault, is this the fix?
Usually, once you have ruled out a loose or corroded connection at the plug. A failed stack sensor sends a reading the board cannot accept and the heater locks out rather than firing.
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