Ensure safe heater operation with the Swimables SW‑41‑024 stack flue sensor, a direct replacement for Pentair part 42002‑0024S. Built to OEM specifications, this sensor prevents overheating by regulating exhaust temperatures in MasterTemp and Max‑E‑Therm heaters.

Key Features

• OEM Replacement – Directly replaces Pentair part number 42002‑0024S, ensuring compatibility with MasterTemp and Max‑E‑Therm heaters.

• Safety Mechanism – Monitors exhaust gas temperatures to prevent overheating, protecting the heater and surrounding components.

• Durable Construction – Made from high-quality materials to withstand the high-temperature environment of pool heater exhaust systems.

• Easy Installation – Designed for straightforward replacement; typically requires a ½" open-end wrench for installation.

• Error Code Resolution – Addresses common error codes such as E‑05 and E‑06, often associated with faulty stack flue sensors.

Product Overview

The Swimables SW‑41‑024 Stack Flue Sensor is engineered to meet or exceed OEM specifications, providing a reliable solution for replacing the Pentair 42002‑0024S sensor in MasterTemp and Max‑E‑Therm pool heaters. This sensor plays a critical role in monitoring and regulating exhaust gas temperatures, ensuring that the heater operates within safe thermal limits.

Over time, the stack flue sensor can degrade due to exposure to high heat, leading to inaccurate readings and potential overheating. Replacing a faulty sensor can resolve common error codes such as E‑05 and E‑06, which are often triggered by overheating issues .

Installation is straightforward for those with basic mechanical skills. After ensuring the heater is powered off and has cooled, the old sensor can be removed and the new one installed using a ½" open-end wrench. It's advisable to apply a bead of RTV sealant to the threads of the new sensor before installation to ensure a proper seal.