I have a Pentair IC40 that was installed in late 2010 and the "Cell" light was blinking green. The flow and salt lights were good so I pulled it out to clean. It had a good deal of buildup so I acid washed it completely and reinstalled. The blinking green light is still blinking. I held down the "More" button and got a read out of 80% telling me that it is about time to get a new cell.
My question is: does this blinking just mean that I need to be aware of the end of life or does it mean that I am not producing chlorine? My pool seems just fine now but is it about to take a walk down the green side? Since it took 3.5 years to get to 80% I figured I might have another 5 months until I complete the process.