I have a DIG220 and it is about 6 years old. I very recently replaced the cell with a Compupool and it worked just fine for about a month. I now intermittently see Check/C together with Low Amp error messages flashing in alternate fashion. Sometimes the messages show up and other times they do not. I cleaned the cell but as can be expected after a short time in use it hardly had any scaling. It seems to be chlorinating but I am guessing not too efficiently. I had my water tested and adjusted all parameters as suggested. This did not change the errors. I checked both fuses on the main board and both tested fine.
Any insight will be greatly appreciated.