After 5 years, 1st problem with polaris and filtration system. Polaris went on and worked fine. When I turned of the Polaris switch, it went off, and then 5 seconds later, the filter lost its prime and water flow stopped. Doesn't happen every time I turn off the polaris, but enough where I am worried. If I turn the polaris back on quick enough after the water stops, it will re-prime itself and start up. Of course, when the pool guy came over, it wouldn't do it. Anyone have any ideas? I have my own theory, but want to see if anyone else experienced anything like this.