777,
Run this test..
Set the cell output to 50% and then watch the "Cell" light.. It should come on for about 2.5 minutes, and then it will be off for about 2.5 minutes.. This cycle will just keep repeating.. If this test works, then most likely the cell is making chlorine.
Keep in mind the cell cannot make more chlorine than your pool can consume, if you have algae.. Even if you can't see it yet..
What color is your water? Do you see any algae?
What is your CYA level?
How large is your pool in gallons?
How long do you run the pump each day?
What is your cell's output level? What FC level do you try to maintain?
How old is the cell? Most cells last 5 to 7 years.
Thanks,
Jim R.