Thanks, I’m not sure on dipswitch, electrician/plumber set that up, not sure how to access actually, looks like just top 2 screws and cover drops down? Can I test that switch is on otherwise by using service mode (currently auto) and pressing aux3 or spa mode? Spillover is working though, with pool and spa returns open, and I’ve put in spa mode to test that spa drain opens and spa jets open, while returns close and spillover stops during spa mode so it seems working properly.That speed is fine. Your HP will determine the minimum flow rate that you can run. It is probably around 1750-2000 rpm.
Is SPILLOVER mode turned on with dipswitch #3 on?