I have a Questachlor Xtra salt chlorinator (30 grams/hr) and apart from a brand new cell about 31/2 years ago I've had absolutely no trouble with it. The unit has reverse polarity and the frequency is set to about every 10 days. Red light/green light indicates which cycle it's on.
Cell is clean and I use a pool shop cell cleaner when the calcium build up occurs but this is infrequently.
I've noticed the last couple of weeks that the needle on the green cycle falls to the middle of the low salt indicator, so I checked the salt level with a proprietary strip and the salt level is sitting at 5500ppm which I believe according to my pool shop test sheets is just right for my pool. When the cycle changes to the red indicator the needle sits at the high end of the winter range (gauge indicates low salt, winter, summer and overload) and the chlorine output is noticeably stronger. There is chlorine output on the other cycle but its much less.
Chlorine levels in the pool at this stage being the midst of winter and the water is freezing are fine according to test strips.
So, I'm wondering is there a problem with the cell or the control unit?? Or no problem at all?