Heater Repair Kit for Pentair Mastertemp and Max-E-Therm Heaters

The Optimum Pool Technologies Heater Repair Kit for Pentair MasterTemp and Max-E-Therm heaters is your go-to solution for maintaining and troubleshooting your pool heater. This comprehensive kit includes all the essential replacement parts specifically designed for the MasterTemp® and Max-E-Therm® swimming pool heaters. Crafted by Optimum Pool Technologies, each component is engineered for durability and compatibility, ensuring that your heater operates efficiently and safely.

Included in the kit are critical components such as the Stack Flue Sensor, Thermistor, Pressure Switch, Gas Shutoff, and High Limit Switch. The Stack Flue Sensor (OPT-42002-0024S) functions to prevent flue gas output from exceeding 500°F—ideal for avoiding overheating and ensuring your system remains error-free. The Thermistor (OPT-42001-0053S) is vital for accurate temperature readings, replacing faulty units for optimal performance.

Safety is paramount, and the Pressure Switch (3902) plays a crucial role by monitoring water flow in the heater. The Gas Shutoff Switch (OPT-42002-0025S) ensures that your heat exchanger doesn’t exceed safe temperatures, while the High Limit Switch (OPT-42001-0063S) acts as a fail-safe, automatically shutting off warnings and preventing dangerous overheating.

These components are not just replacements; they are enhancements, designed to restore your heater's functionality and improve energy efficiency. Whether you're facing specific error codes or carrying out a general tune-up, this kit ensures you have everything you need for a successful repair. Easy to install and built to last, the Heater Repair Kit for Pentair MasterTemp and Max-E-Therm heaters is the ultimate choice for pool owners seeking reliable and efficient heating solutions. Stay ahead of heater issues and enjoy worry-free swimming season after season.

This Kit Includes:

(1) Stack Flue Sensor Replacement 42002-0024S
(1) Thermistor Replacement 42001-0053S
(1) Pressure Switch Replacement 3902
(1) Gas Shutoff 140°F Replacement 42002-0025S
(1) High Limit 135°F Replacement 42001-0063S

Included Parts Description:
OPT-42002-0024S: 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.

OPT-42001-0053S: Thermistors often display a temperature that is much too high when they reach the end of their lifespan. Fix this issue easily by replacing your worn-out thermistor temperature sensor with this Optimum replacement brass thermistor.

42001-0060S (3902): The Pentair® Heater Pressure Switch is a safety mechanism designed to detect water flow in your heater using pressure.

OPT-0025S: The Pentair® Sta-Rite® Gas Shutoff Switch is an important switch in your Max-E-Therm® or MasterTemp® pool heater, and is used to detect when your heat exchanger outlet temperature has exceeded a safe level (140°F) and the switch immediately opens when that happens. Your MasterTemp® heater will indicate when it is time to replace the High Limit Switch when the “AGS” LED is displayed.