The green cell light is flashing and the pool has no chlorine. I checked chemistry and everything seems to be in line, except the chlorine and stabilizer. pH 7.4, TA 110, and salt 3000. I added some stabilizer and bleach to shock. I also added a little salt to bring it closer to 3600, which is recommended by Pentair. I then cleaned the cell with Muratic acid, but it didn't seem to change anything. This swcg allows you to check for life left in the cell, which shows 40% left. I'm at a loss as to what to do next. Any assistance would be appreciated. Thanks.