c,
Sounds to me like one of your automated valves is not working, or at least not working correctly..
In theory, your pool should work as follows...
In the Pool Mode..... Pool water should be sucked through the "Intake" valve by the pump and pushed through your filter and back through the "Return" valve and out the pool eyeballs..
In the Spa Mode..... Spa water should be sucked through the "Intake" valve by the pump and pushed through your filter and back through the "Return" valve and out the Spa jets..
Spillover mode.. Pool water should be sucked through the "Intake" valve by the pump and pushed through your filter and back through the "Return" valve and out the Spa jets.. Since more water is coming into the Spa then leaving, it will spillover into the pool..
Please put your EasyTouch into the three modes and watch the automated Intake and Return valves and ensure they are moving to the correct positions..
Let us know what you find..
Thanks,
Jim R.