FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 heater shutdown fix available at

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preventing water ingress and protecting the light's integrity

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FDXLTER1931 | Hayward Thermistor For HC-Series HDF400 Swimables SW-27-242 heater shutdown fix available atOEM 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