I’m new here, so if I’m posting in the wrong place please move it and PM me where to find the answers.

I have a 7 year old saltwater pool that has worked great. I have had very little trouble with it. At the end of last year I replace the pool pump and cleaner pump. I have been very happy with my pool over the years.

But now I’m getting an error on my RS6 Controller in the house. My Jandy Aqualink RS6 is showing the message saying “Solar sensor shorted” . I don’t have anything hooked up to those pins inside the outside control box by my pool equipment. I called my pool installer and he and I tried to trouble shoot the error, but we just could not get it to clear. We tried to reset by cutting the power to the unit. Then we reset the Rs6 by clear all controls back to factory. Then had to reprogram the rs6 back like it was before to run my equipment. (pool pump-cleaner-water fall- lights-blower-heater-ect…)
None of this worked, I still have the error “Solar sensor shorted”, what the heck is going on here?

My Jandy Aqualink RS6 is also showing the salt % to be 3500ppm, but I knew it could not still be that high after the rain over the weekend. Yesterday, I took a water sample to the pool store and had them check the salt % and found it to be 1400ppm. So the reading inside my house is 3500 and the reading from the pool store is 1400ppm. They also said I had zero % chlorine in the sample. I went home and added 4 bags of salt, and shocked the pool. I took my pool T-cell 15 back to the pool shop and they ran a test and said my cell passed.
My pool guy and I are not sure what the heck is going on here. He said he was going to research the errors before trying to replace anything.
I stopped by Lowes today and bought some more salt and some chlorine tablets. I plan to use the chlorine tablets until I get this problem solved.
So there you have it?
Anyone have any ideas where to start?
What tests should I run first?


Thanks
Mark