Machine displays E16 and grinder does not run when brewing

Safety first: Unplug the machine before touching the grinder area.

Checks:

• Fill hopper: Ensure the bean hopper has enough beans and that no foreign objects are present.
• Unjam grinder: Follow the grinder cleaning steps: empty hopper, vacuum loose grounds, inspect for stones, and clean the top burr area.
• Test operation: Plug in and start a coffee cycle. Listen for grinder operation.

Sensor inspection (advanced):

• Access the grinder motor and sensor (often a Hall sensor or optical encoder).
• Check that the sensor is correctly positioned and that its wiring is intact.

If the grinder runs but the machine still reports E16, replace the grinder sensor. If the grinder does not run at all, the motor or control board may be faulty and require professional service.