I've got no SWCG control board just the IC40 & it's LEDs. For salt testing I've got a LaMotte Salt Tester that I've had for a few years. My levels have been fine.
CYA reading has been 50-60 ppm, so that's not the problem. (I abbreviated it CA in original post).
I'm testing FC,TC,PH, CYA CH & TA w/a Taylor K-2006. All have been fine. That's why I suspected a problem w/ the SWGcell.
I've been adding bleach and getting my FC up to 10 ppm. I thoroughly brush my gunite, removing any algae that my exist. Then when I let just the SWG pick up from there the FC steadily decreases to 1.5 ppm, regardless of my run time (now up to 16 hrs) our my SWG output setting (now up to %100).
The Pentair technician claims it has to be high phosphate levels. I'm not convinced. I just ordered a Taylor K-1106 and will get back to him when I confirm my phosphate levels.
Thanks for your input kelemvor