Hello. My Aquarite system (t15 cell) has been displaying "HI" for about a month. I was travelling and just had the neighbor add some chlorine. Now I am home and need to fix. I did a water test and it is showing a 3200 but the display, before it goes "HI" reads 5500. When I try to recalibrate it won't get lower than 5500 (starts counting backwards at 7000 or so.
I called the maker of the cell and they said HI salt is usuall a bad board in the control unit and to "get it tested". So, is it usually a board issue or cell issue? How do I test the board?