Display shows “Error 50”; machine may not detect the grinder or may refuse to grind beans.

Safety first: Unplug the machine before working on the grinder. Sharp burrs can cause injury.

Step 1 – Check beans:

• Remove very oily or caramelized beans; they can clog the grinder.
• Use fresh, medium-roast beans recommended for superautomatic machines.

Step 2 – Empty and clean grinder inlet:

• Empty the bean hopper.
• Vacuum out loose beans and grounds from the hopper and grinder inlet.

Step 3 – Test grinder:

• Refill with a small amount of suitable beans.
• Run a coffee cycle and listen for normal grinding; if the motor hums but does not turn, it may be jammed.

Step 4 – Advanced grinder service:

• Remove the housing (unplug first).
• Access the grinder and check for compacted coffee blocking the burrs.
• Disassemble the grinder top burr carrier and clean thoroughly.
• Inspect burrs for wear; replace if dull or chipped.

Step 5 – Replace faulty parts:

• Replace the grinder motor if it does not run under load.
• Replace the grinder assembly if the motor sensor/tachometer is defective.