I keep my polaris 280 connected and running year round (freeze protection only during the winter). Last fall when we put the safety cover on, it worked perfect. Took the cover off a couple of weeks ago and water/pressure was blowing extremely hard from the pressure relief valve....almost like a jet is point up toward the surface. The old inline screen was pretty ragged so I ordered and replaced that along with a new pressure relief valve. Still a lot of pressure coming from valve. The cleaner actually moves pretty good and still gets around the pool but it just seems bad hearing and seeing all of that pressure
I disconnected the lines and back up valve to make sure there was good flow through all and no clogs. Still the same thing. I would have taken the backup valve apart but could not get it apart.
visually inspected the unit itself and it appears that the internal hose is still connected.
I read somewhere to reduce flow by decrease the flow through a valve at the pump - dont think I have a valve specifically for that
could turning the adjustment screw one way or the other impact that? Any other suggestions?