Hey all, thanks in advance for any advice on this issue, it's driving me nuts, eating up my weekend, and making my wife irritable as she can't get in the pool!
I noticed yesterday that our Pentair 320 was not taking in water, and thus no stabilized chlorine was making its way into our pool. This is probably what caused algae to show up in our pool when we opened it after a week of no use!
I fixed the "no-water" issue this morning by cleaning the screen at the bottom of the tower, as well as removing the control valve and spraying it down. Once I reattached everything and turned the pump on with the chlorinator lid off, the tower filled with water just above the last puck, and I reattached the lid. However, even with the control valve on 5 (max setting), there seems to be no water flow out of the pump - the water just appears to remain in the tower without dispersing. Moving the valve from 5 to 0 and back doesn't appear to cause any water to move within the tower. Filter PSI is at 17, slightly high but I wouldn't think high enough to cause an issue with chlorinator flow.
Any thoughts on what might be causing this issue? Are there any tests I can do to identify the problem (or that there even is a problem)? I've read that a failed check valve can cause issues, but not sure how to test for that.