The only other valve I see is the red one of the attached picture. Is it the one you are referring to?OK -- MultiPortValve. A DE filter normally has a valve on it that you can select Filter, Backwash, Waste, Recirculate. That or it has a handle that is called Push Pull. Take a picture of the filter and post it.
Best guess is that the equipment is below the pool. If not, that plumbing in front of the pump should be lowered to be in line with the pump suction post.As I have mentioned, it allows me to put the 'OFF' part of the valve only in 4, 6 or 8 o'clock. It can't go up to 11. Am I doing something wrong?