I have an older Naturesoft system and a brand new replacement t-15 cell from Compupool. I cannot generate cholorine and my system lights are telling me to "inspect cell" and "low salt". I have ruled out pool chemistry. My ph is 7.6, my phosphates are non existent, my salt level is testing at 2700 at the store. I even took my cell into the store and they put it on the tester machine and it passes. I don't know where to look next. My system is showing a salt level of 1200 so the system won't generate. Can someone please point me in the right direction? I tried the recalibration instructions I found online, but I never get a salt reading of higher than 1200 to reset to.