I have a 3 way jandy valve for the main drain. The valve handle will only turn slightly to the left and to the right of the closed position giving me the impression that it's not fully open. There is water coming in from the main drain. Also, when the pool company closed the pool last year, they took the handle off of that particular valve..they left the handle on the one that controls the skimmers. why would they do that?
My other question is when I turn my filter off, I can hear water draining from the filter back into the system. I'm not seeing any leaks when the filter is running.
Thanks for your help.