IG Vinyl Pool/Spa with Pentair EasyTouch 8 Control System w/ IntelliFlow 160 pump. My question is on the cold evenings my freeze protection works perfectly at 35 degrees. During freezes, it switches between the pool and the spa every 15 minutes. What my concern is, the SPA seems to drain it's self several gallons during the valve change process. The spa in my mind has gotten dangerously close to loosing all it's water in about 8 hours of cold weather. What my solution was, I also have a SPILLLWAY for the raised spa which waterfalls into the pool. On the EasyTouch, I turned the freeze protection on the spillway to give the spa a "fill" in the process. When I do this, the EasyTouch seems to "ignore" the setting and not activate the spillway circuit, however the indicator lights indicate the spillway is on. The spillway DOES function normally otherwise during both manual and pre-programmed intervals.