Stack Flue Sensor Replacement For Pentair® Sta-Rite® Max-E-Therm® & MasterTemp® by Optimum Pool Technologies

Save $28.61
Optimum Pool TechnologiesSKU: STACK-P-MTP

Sale price$14.99 Regular price$43.60


A stack flue sensor, located on the exhaust elbow of a pool heater, prevents the flue gas output from exceeding 500°F. When this fails, your system will show error codes E05 or E06 to indicate that the stack flue sensor must be replaced.

This replacement stack flue sensor from Optimum Pool Technologies is compatible with Pentair® MasterTemp®, Max-E-Therm®, and other Pentair® Sta-Rite® heaters. It is designed specifically to replace the Sta-Rite® heater stack flue sensor.


  • Compatibility: Pentair’s® MasterTemp®, MiniMax®, Max-E-Therm®, and other Pentair® Sta-Rite® heaters
  • Replaces: Pentair® Sta-Rite® 42002-0024S

Replacing your broken stack flue sensor is easy! Just follow these steps:

  1. Turn off the filter pump and all electrical power to the pool heater.
  2. Allow the heater to cool for at least 30 minutes before proceeding to the next step.
  3. Unbolt and remove both the upper left and upper right jackets from the heater.
  4. Disconnect the wires from the old indoor stack flue sensor.
  5. Remove the old sensor by turning it counter-clockwise with a ½” open end wrench.
  6. Install the new sensor, sealing it with a bead of RTV sealant before threading it into the exhaust elbow.
Statements of compatibility here are 100% guaranteed by Pool Guy Supply, Inc. and are not attributable to or made by Hayward® or any other original equipment manufacturer (OEM) of products sold on this website.

Payment & Security

American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard PayPal Shop Pay Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

CA Residents: Prop 65 Warning Prop 65 Warning

Customer Reviews

Based on 12 reviews
Greg Orr
Stack Flue Sensor Replacement

Quick delivery and everything was like they said. Put it in and works like promised.

Daniel R. Boerem

Stack Flue Sensor Replacement For Pentair® Sta-Rite® Max-E-Therm® & MasterTemp® by Optimum Pool Technologies

Michael Lee
stack flue sensor

Excellent shipping and delivery. it was not an original equipment which I had hoped for, but so far is lasting.

alan hollensbe
Quick fix

Absolutely a quick inexpensive replacement for the original part, received it reasonably fast.


Part worked and the proce was wonderful.

You may also like

Recently viewed