Display shows E08; grinder does not run or stops shortly after starting, no ground coffee is delivered.

Safety: Unplug the machine before accessing the bean hopper or grinder. Keep fingers away from burrs.

User-level steps:

• 1. Empty bean hopper: Remove all beans from the hopper. Use a vacuum with a narrow nozzle to remove remaining beans and dust.
• 2. Adjust grind setting: Set the grind to a coarser setting and try a cycle. Very fine settings can overload the grinder.
• 3. Check for foreign objects: Shine a light into the hopper and grinder inlet. Look for stones, metal fragments, or hard objects. Carefully remove any obstructions.

Advanced steps:

• 4. Access grinder assembly: Remove the top cover and detach the grinder. Inspect upper and lower burrs for caked coffee or damage. Clean thoroughly with a brush.
• 5. Test grinder motor: Apply the rated DC voltage briefly to the motor (off the board) to confirm operation. Replace if it does not spin or is noisy and weak.

Resolution: Most E08 errors are due to bean jams or overly fine grind settings. If the motor or driver circuit is defective, replace the grinder motor assembly or main control board as appropriate.