Ok, I have seen similar threads on here, with possible solutions of replacing the thermistor, but it seemed that those people that fixed their problem with that solution were getting no power whatsoever .
Problem: noticed today pool was greening , was surprised since the swim pure supposedly said my salt was at 3600 ( hasn't changed in a while).
Looked at control unit and the "power" and "generating" would come on, stay on for 4-5 seconds, you would hear an audible click , and the lights would go out. Wait 30 seconds and it comes back on again, and repeat ad nauseam. When the lights go off however, there IS still power to the unit, because I can cycle through the diagnostics. The cell voltage display will count up while the lights are off, then when it turns on the voltage drops very low, then repeats. Appears that there is no cell current based on the diagnostic display, regardless of whether generating light is on at the moment or not. Instant salt is minuscule. Just replaced flow switch within last 6 months. I pulled the cell off (t-9) and it looks like it is perfectly clean, though it's got to be a few years old ( we bought house one year ago with this cell in use already).
So..... It has power, it's turning itself off and on at specific intervals, so it doesn't seem like a short . Is it the cell or this elusive thermistor? I don't have money to just wildly nilly buy a cell if that's not problem. I can *probably* replace a part if all it requires is a bit of soldering .