Just reinstalled my pentair ic40 and am wondering if I might have a bad cell. Brought the chlorine level up to 4ppm and turned the system on. According to my readings my FC needs to 5ppm with a cya level of 80. I started at 50 percent and have gradually increased now up to 80 percent. Currently I am hovering at 3.6 FC. Cleaned cell yesterday very little bubbles from the acid wash so the cell was clean. The cell has less than a season of use on it and all lights are reading as they should.
FC 3.6
TA 80
CH 300
CYA 80
PH 7.6
FC 3.6
TA 80
CH 300
CYA 80
PH 7.6