It looks like a battery symbol. My only guess would be that the unit contains some form of small battery to retain settings in a power outage. That could possibly be dead?? IDK, just my first thought.This redsea doser symbol is alluding me. There is nothing in the manual, non of the LFS redsea dealers have seen it before. Tried reboot, hard reset, unplug plug back in. Everything seems fine with liquids. Anyone seen this before?
I think those batteries are just cheap so it's always a possibility that they break. It should be pretty easy to fix if its a CMOS battery. It should look something like this :
