great company to work with, from tech support to delivery of my parts ( A+)On 05/01/2024 by M. K. (verified customer)
A thermistor is a semiconductor that changes resistance with temperature changes (as the temperature goes up, the resistance goes down). Tstats and High-limits can be found on older spas and have the same functionality as the Hi-limit/Control Thermistors.
Showing all 19 results
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Replaces the obsolete 39525 and obsolete 39204 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 ...read more
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Sku: 79006
Thermistor, Control Thermostat, Watkins No Fault Heater, Hot Spring, Tiger River and Limelight
Replaces the obsolete 39530 and obsolete 39205 Newly designed and includes o-ring This control thermistor is a safety device that measures the water temperature of your spa and communicates that temperature reading to the Motherboard It simply screws ...read more -
Replaces 38415 Newly designed and includes o-ring This control thermostat thermistor sensor detects the spa waters temperature and relays that information back to the system It simply screws into the No Fault Heater Housing (hand tight only) and plugs ...read more
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Replaces 38416 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws ...read more
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This newly designed high limit thermistor replaces the original black plastic-tipped version It is a safety device that will shut down power to the spa if the water temperature exiting the heater is too hot This would indicate a "low water flow" condition ...read more
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This Control Thermostat Thermistor communicates the actual water temperature to the controller (control box motherboard) to shut off the heater when the spa reaches the target temperature It is used on all 73859, 72469, 76840 and 76091 control boxes
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Sku: 34-01395-K
Thermistor, Control & Hi-Limit Sensor Kit, After Market
The after-market thermistor kit (1 control and 1 hi-limit sensor included with o-rings as well as adapters) that fit with either the 4kW or 6kW after-market PDR Titanium double-barrel heater These sensors can plug in directly to the motherboard located ...read more -
Sku: 30-01395-K
Thermistor Adapters, After-Market
The after-market thermistor adapters work to allow the after-market thermistors to connect to the outside of the control box instead of connecting directly to the motherboard of the control box -
This is the after-market replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water ...read more
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This is the replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water temperature to the ...read more
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Sku: 008019
Sensor Set, Oasis
High-limit and control thermostat sensor set for the Oasis spa models -
Sku: 39204
Thermistor, High-Limit, Hot Spring, Tiger River, Limelight
This item is obsolete and replaced by:
79005This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Sku: 39205
Thermistor, Control Thermostat, Hot Spring, Tiger River and Limelight
This item is obsolete and replaced by:
79006This control thermostat thermistor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Sku: 38415
Thermistor, Control Thermostat, Hot Spring and Tiger River
This item is obsolete and replaced by:
78970This control thermostat thermistor sensor detects the spa waters temperature and relays that information back to the system It simply screws into the No Fault Heater Housing (hand tight only) and plugs into the outside of the spa's control box If your ...read more -
Sku: 38416
Thermistor, High-Limit, Hot Spring and Tiger River
This item is obsolete and replaced by:
78969This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Cool gray temperature sensor fitting
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OBSOLETE This is the replacement thermistor for all 1994 Hot Spring spa models and 1995-1998 Hot Spot RE, RLX, SE & SLX spa models This Control Thermostat Thermistor communicates the actual water temperature to the controller to shut off the heater ...read more
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OBSOLETE-Use 39205 This control thermostat thermistor sensor detects the spa water's temperature and relays that information back to the system It simply screws into the No-Fault Heater Housing (hand tight only) and then plugs directly onto the ...read more
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Obsolete: Factory replacement suggestion item #39204 The high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws ...read more
Showing all 19 results