FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 and JEP pumps

and JEP pumps

heater shutdown fix available at retail location

safety shutoff triggered by temperature spike

Note: This cartridge may be compatible with your filter

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FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 and JEP pumpsOEM Hayward Thermistor FDXLTER1931 is a critical sensing component for Universal HC Series HDF400 heaters, precisely regulating water temperature to maintain consistent heating performance. Engineered for compatibility with standard Cupro Nickel heat exchangers, it provides excellent resistance to saltwater and chemical exposure, making it ideal for demanding pool environments. Its accurate readings and robust construction ensure safe heater operation