A:Answer I recently experienced the same issue with my SS-15. Will not brew, and the three cup-size lights are flashing on and off. Nothing that I tried would start the unit working, and I did not find any solution to this on the internet.
So....I called Cuisinart customer service....and a person answered!!!
They informed me that there is a "reset process" for this problem:
Per Cuisinart customer service:
remove water reservoir
locate toggle switch on the Right side of unit
flip toggle on and off for 60 seconds
unplug machine for at least 10 minutes
Re-attach reservoir and plug unit back in....the unit should have reset.
Once unit is working, descale unit with 50/50 white vinegar and water in reservoir. (3-4 brewed cups) then flush unit out by brewing 4-6 cups of plain water.
I'm in the process of trying the above solution, not finished with it yet.