Am I supposed to leave the system in Solar Preferred mode always? If I do, will solar ALWAYS run, or will it only turn on when it recognizes the solar sensor is a high enough temperature that it will actually result in heating the pool?
I just got solar installed, and I'm still trying to understand it. Currently, it's a cloudy day and the solar immediately kicked on this morning even though it's cold outside. The air temp was reading 56 degrees, and the solar temp was reading 80 degrees, which I highly doubt considering it's cold and cloudy. Is it kicking on because that solar sensor needs to be calibrated?