I replaced the mother board and the unit worked fine for two days. This morning when I checked, the check salt and inspect cell lights are both solid, not blinking. The cell is new, installed in May of this year. I took it out and looked at it and it is clean as a whistle. The salt reading this morning said 1600, then it went to 400 and now it reads 200. I will take the cell to be tested tomorrow.
Any ideas at this point?
My pool chemistry is always in near perfect balance and my CSI stays ~ -.03
Latest test as of today at 4 EST:
FC: 6
CC: 0
PH: 7.7
TA: 70
CH: 270
CYA: 70
Salt: 3400 (Taylor tested)
Borates: 32