Don't want to scare you, but I had the same problem with my IC40. After ~18 months, the Clean Cell light began coming on all the time. Even after cleaning the cell, it would not stop blinking. Then, my salt readings went all over the place, but mostly to zero, which prevented the cell from doing anything at all.
Anyway, eventually the cell died altogether. One day, all the lights just stopped working, period. I've verified that I'm getting power from the controller.
You may want to call Pentair tech support asap, as there is a (small) chance that the unit is still under warranty. Pentair offers a three year warranty if the pool was built with 3 or more Pentair components. For example, a Pentair pump, filter, and control center or Intellichlor would extend the warranty from 1 year to 3 years on all three components.
My salt cell was built in ~fall 2008. If your's was installed in that same timeframe, you just might have a couple of months remaining on the warranty.
