Hot Spring Hi-Limit Sensor 79005 (Replaces 39204)

Hot Spring OEM High-limit thermistor plugs into the motherboard, which is inside the IQ 2000 Box. If water temperature of spa reaches 46 degrees Celcius or over, this sensor will shut heater down in order to prevent damage or injury.

79005 replaces older style #39204 sensor.

Comes with replacement O-ring for seal.

See diagnostics here

79005 High Limit Sensor is for the following Hot Spring models:

Make	Model	Date Range
Hot Spring	Grandee	2001-Current
Hot Spring	Vista	2004-2013
Hot Spring	Envoy	2004-Current
Hot Spring	Vanguard	2001-Current
Hot Spring	Grandee NXT	2014-Current
Hot Spring	Envoy NXT	2014-Current
Hot Spring	Jetsetter NXT	2014-Current
Hot Spring	Prodigy	2001-Current
Hot Spring	Sovereign	2001-Current
Hot Spring	Accolade	2005-2006
Hot Spring	Aria	2007-Current
Hot Spring	Highlife ILE	2003
Tiger River	Bengal	2001-2010
Tiger River	Siberian	2001-2004
Tiger River	Caspian	2003-2010
Tiger River	Sumatran	2001-2010
Tiger River	Bengal Model MM	2005-2010
Limelight	Bolt	2012-2018
Limelight	Pulse	2008-Current
Limelight	Gleam	2013-2018
Limelight	Flair	2008-Current
Limelight	Glow	2008-2018
Limelight	Beam	2018-Current
Limelight	Flash	2018-Current
Limelight	Prism	2018-Current

Diagnostics

Hot Spring Hot Tub in Protection Mode?

1. Try a hard reset. Switch the power off, wait 2 minutes then switch back on. 
2. If the above does not work, suggests an issue with the Hi-Limit Sensor.

Hot Spring Hot Tub Stuck on 10 degrees and won’t heat

1. Try a hard reset. Switch the power off, wait 2 minutes then switch back on. 
2. If the above does not work, suggests an issue with the Hi-Limit Sensor.

Hot Spring Hot Tub Ready and Power Lights Flashing

1. Check the screen for further diagnostics, may suggest one of the above issues?
2. Try a hard reset. Switch the power off, wait 2 minutes then switch back on. 
3. If the above does not work, suggests an issue with the Hi-Limit Sensor.

Hot Spring Logo Light Flashing

1. Check the screen for further diagnostics, may suggest one of the above issues?
2. Try a hard reset. Switch the power off, wait 2 minutes then switch back on. 
3. If the above does not work, suggests an issue with the Hi-Limit Sensor.