I have a brand new Hayward Chlorinator and it worked for 2 months and now sticks full on. I'm not sure how to fix it. Chlorine levels go high and then I have to adjust by controlling the number and amount of pucks in the unit. Pretty bad system. Any ideas as to how this simple device could fail in such a manner? Also any clues on how to verify or confirm that it is not working properly? When I open the top I see water full in the chamber. And water circulating around and coming over the top. On any setting of the control dial. It doesn't seem to change the amount of swirling water.