I usaully get this when I add more salt. Usaully I try to get it right prior to installation but sometimes fall short of 3200ppm. I sometimes need to add another 80LB bag or two of salt. This sometimes causes a "Hi" reading. It goes away by the morning and everything is good and salt is up to 3200-3400.
However I've read that this could short out the PCB board or blow a fuse. Is this right? and if so how do we raise the salt level safely? btw I add salt to deep end around sides and not through the skimmer.
Any info is much appreciated.