I have been having the same problem. I have an Aquarite Goldline generator. I replaced the cell about a year ago. It was working fine until lately it showed low salt levels at about 1800. My local pool store checked the salt and it read 4000! There is no chlorine being generated. I inspected the cell and cleaned it with a muriatic acid solution. It still reads low salt. Could it be something else like the flow sensor?