Intellichlor IC40. Neither salt light is on. The cell light is blinking. I have acid washed the cells 3 times....no effect. I called Pentair. They asked if the cells are black and said if they are black that I had super chlorinated too much. I don't think I did. I just push the super chlorinate button a few times a year. I doesn't make sense to me that the salt lights would show nothing. So, do I now have a $700 boat anchor? This is the second IC40 I have had. The new one shows less than 20% usage. It would be cheaper for me just to buy chlorine.