I have an Aquarite T-15 Salt Cell that is showing some signs of failure. It give a current active salt reading of - 0 and the average is 2500 (was 3000 2 days ago). The temp does appear to be working (it fluctuates when water passes thru it), the readings do not change when the panel 'clicks' to indicate the cell should be producing Chlorine. After a brief period the lights kick back to check salt and inspect cell. The cell is less than 3 years old and its current (and unchanging) stats are:
What type of troubleshooting would be recommended first?