This is normally caused by air in the milk tube or an empty milk container.

• Check the milk container is properly filled and connected.
• Ensure the tube is not kinked or blocked.
• Prime the milk system: 
  1. On the home screen, tap settings menu >maintenance menu. 
  2. Enter your access code. If you haven’t changed it during the initial machine setup, the default access code is 8888.
  3. Select milk system rinse. 

If this does not resolve the problem, please contact us using the Live Chat in the bottom right or call our Nespresso team on 0808 100 5000.