Have had a Jandy Aquapure 1400 for about 4 years. Love the thing. Went out to the pool last weekend and noticed cloudy water. Checked chlorine level - ZERO. No error codes on Aquapure control panel, but when I go back in the house, I notice a "check Aquapure" on my Jandy AquaLink control box. Go back out to the Aquapure control box and notice the "cell reversing" light is on. Every time I check over the next few days, I have the same thing. No error code on Aquapure, "cell reversing" light on, and "check Aquapure" on my Aqualink. I even rebooted the whole system - no change. Only other thing I can add is that I replaced the Aquapure sensor about two years ago, and the salinity has always read low (when compared to the salt drop kit test I have). About two weeks ago, it started reading below 2000 with test kit showing salinity at 3400. I cleaned the sensor (like I have numerous times) and no change, so I recalibrated the salinity reading to match the test kit at 3400. The problems with being stuck on cell reversing and no chlorine started a few days later. Any thoughts?