Yes with Temp and Salt level correct the system works automatically. Test the Salt level like JamesW said to verify the actual salinity and if it is more than a couple of hundred off I would clean the cell and then let the system check it after the cell is clean.Ok, does it automatically work when temp right
You're getting two different salinity readings on positive vs negative polarity, which usually means that the cell is bad.
What are the first 4 of the cell serial number?