Ground coffee flows out of the collection container
This is a normal event, and the static load is usually the cause.
The engine does not start or makes abnormal noises as if running under load.
The grinding mechanism is smothered or blocked. Unplug the appliance immediately and clean the mechanism as described in the section "Cleaning and care".
The beans are not milled and the mill produces a high-pitched squeaking sound.
Due to their special shape, the beans can get stuck inside the grinding mechanism. Set the grinder to position 1 and unplug the appliance. Stir the grains with a spoon to release those stuck in the mechanism.