Mastertemp and screen logic not the same temp

Use your multimeter and test the water temperature sensor connected to the EasyTouch and the thermistor temperature sensor in your heater and see which one is off.

It helps to know the actual water temperature using an accurate thermometer.

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Did things ever work correctly?

When did the spa properly heat to 104F?
 
Rick,

You can use ScreenLogic and calibrate the water temp probe.

See this set up page.

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It does now work well if you try to make big changes.. Change it about 3 degrees and save it and then you can do it again.

Thanks,

Jim R.