Pentair Intellichlor IC20 Chlorine Generator

A flashing light means the cell isn't producing chlorine. You need to manually add some now.

you also need to clean the cell and even possibly replace it. How many hours are on the cell? How old is the cell?
 
>> Any idea how much time is left before replacement?

If you can borrow a Pentair IntelliWand, it will tell you detail diagnostics for your cell. Many pool pro's have them and some stores may have a unit in their repair dept. I paid about 110.00 from online store.
 
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