Watkins, Hot Spring Control Thermistor 78970

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Watkins, Hot Spring High-Limit 78970
Watkins, Hot Spring High-Limit 78970

Control Thermistor

This part is a replacement control thermostat for select Hot Spring hot tubs. If the temperature of your spa reaches 118 degrees F, the thermostat sensor will turn the heater off.

Screw the sensor into the No Fault Heater Housing and plug it onto the IQ 2020 control box. Compatible with 1994 to current Hot Spring Highlife, Limelight, and Tiger River spa models.

*Check specs section for full list of compatible models and years.


Make Model Date Range
Hot Spring Grandee 1997-2003
Hot Spring Jetsetter 1997-2000
Hot Spring Prodigy 1997-2000
Hot Spring Sovereign 1997-2000
Hot Spring Classic 1997-2000
Hot Spring Classic 1998-2000
Hot Spring Landmark 1997-2000
Tiger River Bengal 1997-2000
Tiger River Siberian 1997-2000
Tiger River Sumatran 1997-2000
Tiger River Tondi 1995-1996
Tiger River Khyber 1995-1996
Tiger River Manora 1995-1996
Tiger River Tondi PH 220 1996
Tiger River Manora MH 220 1996


Item Description Part #
1 T-stat Control Thermistor 38415
2 O-ring Control Thermistor 34878
3 Hi-limit Thermistor Assy 78970
2 O-ring Hi-limit Thermistor 34879

ITEM Description Serial No Used Part No
1a Thermistor Assy Hi- Limit see below matrix 78970
1b Thermistor Assy Control see below matrix 38415
* O- Ring Control Thermistor All-151001-current 34878
* O- RIng Hi- Limit Thermistor All-151001-current 34879

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