I have an issue where my steam boiler overfills. When I turn on the steam wand, liquid water comes out rather than steam. When cool, and when I turn on the machine, the vacuum release valve immediately pops up indicating the tank is overfilling.
I'm not a great fixer upper so took it to my local espresso repair. They thought it might be the circuit board. It got replaced and the unit worked great for about two weeks.
Now it is happening again....same thing.
Any ideas from you out there?
Bruce in Winnipeg