title_body: Delonghi Magnifica - pump stops after 10 seconds with fault lights
upvoted_answer: Given that this fault showed with hot water from the steam nozzle, I was guessing a pump or flow sensor fault. It turned out to be the flow sensor.
  
  To repair:
  
  
  Unplug the coffee machine from the mains
  Remove the back panel, see here for instructions
  Locate the flow sensor:
  
  
  
  
  
  Unplug the electrical connection
  Disconnect the two tubes (noting which goes where)
  Remove the flow sensor
  Carefully twist the top and bottom to open it
  Rinse to remove any particles - mine had some coffee grounds in it which were probably jamming the mechanism
  Carefully reassemble the sensor and reattach it
  Replace the covers