We are newbies with hot tubs and have a new Hot Springs Grandee. Have had it for 3 months. The green "logo" light recurs on blinking errors. We have cleaned the filters (which were pristine). We check the diagnostics screen and it will first show as in the yellow. Then we turn off the tub, wait, and turn back on. Then the same screen shows all in the green. A few hours later, we have to do it all over again. Manual chemical test strips show everything where it should be. Any suggestions as to what the issue is?
