Message My machine has been running very slowly and I am getting the message "ventilate"?

Having read the other reviews here, I was prepared for the cryptic "VENTILATE" message. (The manual refers to this procedure as "Loading the circuit", which doesn't help to clarify things.) Of course this refers to what Americans would call "priming" the machine. As mentioned in another review, there is a plastic hand pump supplied for priming, but that is only needed in the event that the electric pump fails to self-prime. All I had to do (following the quick-start instructions) was to select the Hot Water function; the internal pump quickly primed itself. clean machine with the Saeco scale remover thank you ,Lee Davidian