Machine shuts off unexpectedly during brewing or steaming without any error code.

Safety first: Unplug the machine and allow it to cool if it feels hot to the touch.

Step-by-step checks:

• Check ventilation: Ensure the machine has adequate space around it and is not enclosed in a tight cabinet.
• Use stable power: Plug directly into a wall outlet, avoiding long extension cords.
• Restart after cooling: Wait 20–30 minutes, then restart and monitor operation.

When to call a technician: Repeated unexpected shutdowns indicate a possible internal fault with the thermal protection or control board and require professional diagnosis.