My T-CELL 15 is only about 3 years old. System is no longer generating chlorine (inspect cell and check salt illuminated) because average salinity reading drops below 2300 each night. I recalibrate each morning and instant salinity matches what tests indicate, 3100ppm. It starts generating chlorine because the salinity level is in range. Cell tested good at pool store.
Is the cell nearing end of life or is this a PCB issue?