Thanks for all the help. My SWG is definitely not working right. Either not at all or not correctly. I know this because all my lights on the display are blinking (which may be from slightly high salt, but that is what I am working on testing by diluting my pool which is a process). Blinking lights are not at all normal and they just blink on and off. If I were betting, I think something is wrong with the SWG. My most recent pool test results are as follows (and we have had VERY high heat and humidity these last many days).
FC= 1.5 (usually I am around 4 or 5)
CC= 0.5
PH=7.7
TA=130 (it’s often 110 to 130 but with a vinyl liner I don’t get too concerned here)
CH= 50
CYA=54
Salt=4300
SWG normal operation is at 4000 according to the manual, but I spoke to a tech support person today and they prefer 3500…not sure why the manual says 4000! I typically keep my salt around 3600-3800 and have never had this problem. I am in my 7th season. I shocked my pool on July 14th due to some clear algae and added salt because I had a reading of 3300 and somehow I got taken by surprise and ended up with quite high salt. I just don’t think a salt reading of 4300 would cause my SWG to go out of whack. The tech said he has seen that before. I think it is coincidence, but I am trying to rule it out by diluting my water which is a process. So…I need to add bleach and it appears I can do this for quite some time. If anyone has any additional thoughts, please feel free but I am not confident my SWG will suddenly work fine again. I am running the filter all night to let the added water filter through. SWG is off.