The No-Fault heater is a resistance component that heats up when voltage is applied. Operation of the heater is determined by the call for heat of the control thermostat. It is a water-cooled component and requires the presence of water at all times. The water required to operate the heater is provided by the circulation pump.
The No-Fault heater assembly consists of one heater element housed in hybrid polymer housing. The water flows through a stainless steel Tribend tube that keep the water separated from the heater elements. Additionally, the thermistors for both the spa high limit and control thermostat are located in the polymer housing.
Come standard with all 2003 and later Caspian, Bengal, and Sumatran model spas.
Retro-fit for all 97-2002 Hot Spring and Tiger River Spas