In my experience, this is a sign that the solenoid has something inside it. Your best bet is to take it apart and do a full descale.
This video takes you through the whole process. https://www.youtube.com/watch?v=N9i-EH7qXOc
It's not as big a task as it might seem, and it will definitely get everything flowing again
I've heard this said many times, and I'm sure there's truth to it. Raw meat needs to be treated carefully because the risk exists.
I'm not sure the risk is as severe as this comment suggests, though since many cultures have a version of raw minced beef like this https://en.m.wikipedia.org/wiki/Steak_tartare