Steam, Ground Coffee, Generic Alarm, and No Beans lights flash alternately with strange noise — Coffee grinder blocked by a stone

What does lights 4, 5, 6, 7 flash alternately and machine makes strange noise mean?

If all four lights flash alternately and the coffee grinder makes a very noisy, strange sound, it indicates that a small stone or hard object has blocked the coffee grinder.

• A small stone or foreign object is present in the coffee beans, blocking the grinder.

Click steps to track your progress.

1. 1

   Immediately switch off the machine.

2. 2

   Do not attempt to clear the blockage yourself, as this can damage the machine.

3. 3

   Contact an authorized De'Longhi service centre for professional assistance.