FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 Note: This cartridge may be

Note: This cartridge may be compatible with your filter

heater shutdown fix available at retail location

oem booster pump part for polaris system

safety shutoff triggered by temperature spike

and industrial use

FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 Note: This cartridge may beOEM 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