I am having an issue with my booster pump and pressure side pool cleaner (polaris 280). I noticed last week my pool cleaner was no longer moving, so I took it apart, cleaned it, and installed new screen. I also replaced all my booster pump hoses that attach the pump to my system. After doing all this, I started my booster pump again today and it is still not working. When I turn the booster pump off, the water will come back through the return we have the cleaner attached to, however, when I turn the booster pump on no more water goes through the return. Any help with what the issue might be would be greatly appreciated.