Hi, Thanks Sean I will give that a try and see what happens. I just cleaned my cell and drained my pool down do to high CH.I have been slowly adding salt back to get it where I need to be.I am at 2900 right now and the red light is still flashing.I will get it up to 3500 and see what happens.All the chemicals are perfect right now.I could never figure out why my CH keep going up. ( I was up to 580 ) Now I am at 190 CH.Well thanks again I will let you know how it goes.