[ReelMagic]

Tclass, I believe the filter cover is not installed correctly as what you describe is exactly the problem I had.. Re-installing the filter cover was my problem as the gasket wasn't seated correctly. The same problem has happened several times over the years and I now know what to do when the system won't prime after cleaning the filter.... If the filter doesn't fill quickly then that's the problem. Air is getting past the rubber gasket. Not sure why the gasket is such a problem but it is. M2C... Good luck