Watkins PART # 38416 Hi-Limit Thermistor for all Hot Spring and Tiger River spa's. Used in conjunction with the 38415 Control Thermistor and the No Fault Heater.
Each spa is equipped with a high limit thermistor that is used as temperature sensor. The thermistor is a semiconductor that changes resistance with temperature changes (as the temperature goes up, the resistance goes down). The high limit thermistor trips if the water temperature exceeds 118 degrees F.
NOTE: BYPASSING A THERMISTOR OR SHORTING THE TERMINALS WILL CAUSE THE SPA HEATER TO SHUT DOWN. NEVER ATTEMPT TO BYPASS OR ELIMINATE A THERMISTOR FROM THE CIRCUIT.
Includes install instructions.
Also, works in conjunction with 38415 Control Thermistor (also in our store).