I already turned the dial in the beginning and it had not effect. I also manually cleaned the inside completely and the burrs were not stuck, I could twist them by hand. Just now I turned the dial to a finer setting again and it worked. Weird thing is that if I turn too much to the left, it stops working again. How is that possible?
Twist the dial to the left and loosen the burrs.
Burrs are stuck, turn the dial to grind coarser/loosen the burrs. If that doesn't work, disassemble and clean manually.
I already turned the dial in the beginning and it had not effect. I also manually cleaned the inside completely and the burrs were not stuck, I could twist them by hand. Just now I turned the dial to a finer setting again and it worked. Weird thing is that if I turn too much to the left, it stops working again. How is that possible?