I have a 2013 Grandee I bought from hot spring spas brand new.
Finally got it set up again after sitting empty all winter and most of the summer till our house was finished.
Water pH and Alk is balanced pretty good per what the strips say
I thought the Saltwater was reading perfect.
Well the green light started blinking which 99% of the time meant the ACE SW system was malfunctioning so I cleaned the salt cell (filled a small container full of spa water and added 3 tbs of "SPA down" put salt cell in for 10-15min .... that would clean the scaling issue most of the time.)
when I completed that and fired it back up it was reading "High salt" .... it kept saying this for 24 hours... next day I drained probably 100 gallons out and refilled back up.... still saying "high salt" ... test strips are reading low salt now if anything.... SO CONFUSED. I'm about to say screw it and run my hot tub normally and ignore that stupid salt cell.....
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I really don't want to drain my spa completely either, I just filled it a second time, (first time was to much foam and suds) and its balanced perfect (takes 6.5lbs of spa down to drop pH which costs $$$)