Nilrem882

New to the Forum. Looking for some help with a CalSpa 2000. Spa is running in a limited capacity. I am getting an "SF" error when turn on the jets only when the topside selector is active on the "Dome Jet" option, but not the "Wall Jet" option. I have put in a new filter and checked for blockages on within the tub. Can't seem to figure out what is causing this issue. Also a question that I have about this selector switch.... Should I be able to change between Dome or Wall jets while the tub is running? I remember being able to do that over the summer but now when the jets are running, the selector is frozen in position. To change from Dome to Jet, I have to shut of the jets then make the selection. Is this normal? Any insight will be appreciated.