Display shows E14; machine may not recognize the brew group or may refuse to start brewing.

Safety first: Turn off and unplug the machine before removing the brew group or accessing the door area.

Step-by-step checks:

• Remove and clean brew group: Rinse under lukewarm water, dry, and ensure all moving parts operate smoothly.
• Inspect brew group tabs: Check for broken or worn plastic tabs that engage internal switches. Damaged tabs may prevent proper detection.
• Check door closure: Ensure the service door closes fully and latches. A misaligned door can prevent the door switch from activating.
• Reinsert brew group: Insert straight and firmly until it clicks into place.

When to call a technician: If E14 remains, the internal microswitches or wiring harness may be faulty and require professional service.