Hayward FDXLTER1930 FD Series Thermistor - HS Error

Hayward FDXLTER1930 FD Series Thermistor The Hayward FDXLTER1930 FD Series Thermistor is a genuine replacement part that acts as a temperature sensing thermistor in the manifold adapter inlet and controls the heater operation. When the inlet water temperature drops below the temperature set on the operating control, the burner controller supplies power to the combustion air blower through a series of safety interlocks to heat your water back up to the desired, set temperature. Hayward FDXLTER1930 FD Series Thermistor Features: This device is compatible with Hayward Universal H-Series Low NOx Pool Heater Models: h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, and h250fdp. Also compatible with Hayward Universal H-Series Low NOx Pool Heater Models: h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, and h400fdp. Installation and Maintenance Manual