Pentair Max-E-Therm/MasterTemp Thermistor (42001-0053S)

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Replace a worn temperature-sensing component with this thermistor for compatible Max-E-Therm and MasterTemp heaters. The thermistor helps the control system read water temperature so the heater can cycle properly and maintain the selected set point.A failing thermistor may cause inaccurate temperature readings, erratic heater operation, or diagnostic errors. This replacement is a practical option when testing confirms the sensor is out of range or physically damaged by age, heat, or exposure. Temperature sensor for select heater systems Supports accurate water temperature feedback Helps resolve temperature-reading problems Compatible with certain Max-E-Therm and MasterTemp models Match part number before ordering Show more