Gonna revive an old thread rather than start a new one. My pool is <1 year old (opened in April). Temps here in Oceanside CA have the pool consistently below 70 (currently 69). My IC-40 produces chlorine just fine and the light indicates good salt level (not flashing or red). However, the salt meter reads 0ppm on my ScreenLogic app. I find it odd that I'm not getting a low salt warning but the app reads 0ppm. I used the Taylor kit to test salt levels (it changed from a milky white/yellow after 21 drops to a salmon/brick red instantaneously at the 22nd drop.)
With Taylor reading 4200pm (which is what I started at in April - it didn't drop at all the entire season?), the IC-40 saying everything's good, but the SWG reading 0ppm salt. Does this sound like a salt sensor failure or a water temperature issue?