Hi all! Thanks in advance for any help you'd be able to give me. My pool is about two and a half years old and I live in Tampa florida. The temperature is currently in the 90s and has been every day for the last several weeks. I noticed this error on my panel of my true clear system yesterday, so I cleaned the cell, took a water sample to pinch a penny, and added some salt to the water as they told me to. I also cleaned the filter. After doing all that, the error went away but this morning the error is now back. Does anyone have any idea how I can check the cell to make sure it is functioning properly? Or for that matter, anything else I can do to try to resolve this without having to buy a new cell? I thought they lasted a while longer than this. Tia!