Thermistor, High Limit, Solana and Hot Spot

Item #: 73992
$34.11

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. Secondly, if this sensor is faulty then the spa can shut down requiring you to shut off power to the spa, then re-establish power in order to reset the unit. This thermistor is for Hot Spot spa models beginning in 2006, (except Sprint & Dash) and all Solana spa models beginning in 2006.

This part can be found on many Hot Spot, Solana models from 2006 to 2022

View compatibility table & diagrams

Description

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. Secondly, if this sensor is faulty then the spa can shut down requiring you to shut off power to the spa, then re-establish power in order to reset the unit. This thermistor is for Hot Spot spa models beginning in 2006, (except Sprint & Dash) and all Solana spa models beginning in 2006.

Test Procedure
1. Set the meter to 20K on the OHM scale.
2. Record the temperature of the spa water.
3. Unplug the thermistor from the control box.
4. Meter across the two Thermistor leads.
5. Refer to the Temperature versus Resistance chart below to find the correct resistance value for the temperature measured. If the temperature and resistance does not match that of the chart, this test has failed and the thermistor must be replaced. Remember if the spa has been inactive, the spa water temperature may be different than the water temperature in the heater housing.

Click this chart to show the OHM range of the thermistor

View compatibility table & diagrams

Ref. Diagram
# 4 Hawk Control Box (Current) (Hot Spot 2019 - 2019) View Diagram
# 7 Control Box (Cedric) (Solana 2006 - 2010) View Diagram
# 4 Heater Assembly 2006-Forward (Hot Spot 2008 - 2009) View Diagram
brand model years
Hot Spot Relay (REL) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Rhythm (RHY) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Stride (STD) 2019, 2020, 2021
Hot Spot SX (SX) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Hot Spot Tempo (TEM) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Hot Spot TX (TX) 2019, 2020
Hot Spot La Palma (LAP) 2008, 2009
Hot Spot Mallorca (MAL) 2006, 2007, 2008, 2009
Hot Spot Hot Spot Pace (PAC) 2020, 2021
Hot Spot Tobago (TOB) 2006, 2007
Hot Spot Relay (REL) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Rhythm (RHY) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Stride (STD) 2019, 2020, 2021
Hot Spot SX (SX) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Tempo (TEM) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Hot Spot TX (TX) 2019, 2020, 2021
Hot Spot Hot Spot Pace (PAC) 2020, 2021
Solana RX (RX) 2006, 2007, 2008, 2009, 2010
Hot Spot SX (SX) 2011, 2012
Hot Spot TX (TX) 2011, 2012
Hot Spot La Palma (LAP) 2008, 2009
Hot Spot Mallorca (MAL) 2006, 2007, 2008, 2009
Hot Spot Mallorca (MALS) 2006, 2007, 2008, 2009
Hot Spot Relay (REL) 2010, 2011, 2012
Hot Spot Rhythm (RHY) 2011, 2012
Hot Spot Sorrento (SOR) 2006, 2007, 2008, 2009
Hot Spot Sorrento (SORS) 2006, 2007, 2008, 2009
Hot Spot Tempo (TEM) 2010, 2011, 2012
Hot Spot Tobago (TOB) 2006, 2007
Hot Spot Trinidad (TRI) 2006, 2007, 2008, 2009
Hot Spot La Palma (LAP) 2008, 2009
Hot Spot Mallorca (MAL) 2006, 2007, 2008, 2009, 2010
Hot Spot Mallorca (MALS) 2006, 2007, 2008, 2009, 2010
Hot Spot Relay (REL) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Rhythm (RHY) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Sorrento (SOR) 2006, 2007, 2008, 2009, 2010
Hot Spot Sorrento (SORS) 2006, 2007, 2008, 2009, 2010
Hot Spot SX (SX) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Hot Spot Tempo (TEM) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Hot Spot Tobago (TOB) 2006, 2007
Hot Spot Trinidad (TRI) 2006, 2007, 2008, 2009, 2010
Hot Spot TX (TX) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021

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