Pool was installed in 2007 with Aqua Rite 20. The salt level reads 1700 but it tests 3100. The panel won’t reset. I had the t-cell 5 tested and it is good. We did the acid wash and it is clean. I am unable to verify what cell the panel is set for. The diagnostic screen won’t display the option to set the cell size. When I run through the diagnostic buttons the readings are 1700, 68, 33.5, 0, 54P, -0, 88-1, 8.80. Then it goes back to 1700. Every video I’ve watched says you reset the cell size on screen 8 but I don’t have 8 options. The pool company wants to sell me a new system for $1700! Please help!