Display shows E06 and the grinder does not run when making coffee.

Safety first: Unplug the machine before accessing the bean hopper or grinder.

Basic cleaning:

• Empty the bean hopper completely.
• Remove the hopper (if removable) and vacuum out loose beans and grounds.
• Use a small brush to clean the upper burr and chute area. Do not use water inside the grinder.
• Check for foreign objects (stones, hard debris) that may have jammed the burrs.

Functional test:

• Reassemble the hopper, add a small amount of beans, plug in the machine, and attempt a grind cycle.

Advanced checks:

• If the grinder hums but does not turn, the burrs may still be jammed or the motor is weak.
• If there is no sound at all, check the grinder motor connectors and wiring harness on the PCB.
• With the unit unplugged, measure the grinder motor winding resistance and compare to specifications; an open circuit indicates a failed motor.

Replace the grinder motor or complete grinder assembly if it is seized or electrically open. PCB driver faults should be handled by a professional.