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Hot Spring Bengal

Bob Vass

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I have a 2003 Hot Spring Tiger River Bengal which won't heat.  I replaced both thermistors but if I have the main (4 pin) thermistor lead connected to the main board it trips the system (not the power feed ground leakage) and flashes the red light on control panel.  If I disconnect this sensor then main pump and lights work fine, the temperature display works and the (green) ready light on the control board is lit.  No heat to pool and ozone system seems to be inoperative.  Any clues, please ?  I'm about to test heater voltage when rain stops (!)  What should I expect to see, please ? 

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Your thermistors need to be connected correctly and have the correct ohm value for your heater to work. When the control box sends power to the heater you should have the same voltage going to your heater that you have coming into the heater relays. This could be 120 volts or 240 volts, depending on how you have your spa connected. Be careful anytime you are working around live electrical circuits. You can always contact your local HotSpring dealer for service.

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