I just recently replaced my Hayward circuit board with an after market board by Optimum. The prob I have is that when I start the system up, the power light and no flow light comes on. When the no flow light goes out, the generating light comes on for about 2 mins and then goes out and the check salt and check cement lights come on steady. I have checked the cell, re-installed it, pushed the diagonistic button and held for 3 secs, but the check salt does not reset - stays on steady. My salt reading has been at 2200 but today started showing 2100. Do I just need to add more salt or could my cell need replacing?