My salt cell turns off after 30-40 minutes of operation. If I reset it, it will run another 30-40 minutes. It is a T-Cell-15 (40,000 gallon). The salt cell is 4 years old and I run it at 35%. I remove and clean it every fall. The 'inspect cell' error message is always on, but I think it works sometimes because of the voltage readings, however the voltage, current, and salt readings change over time during the 30-40 minutes it is operating. I attached a file with the readings. The actual salt level is about 3200. The controller is a AQL-PS-4. Anybody know what the problem is? Thanks.