Hmm. I see two possibilities: (1) a common issue with this device is a clogged ( Calcium) upper piston. The standard decalcification does not reach it. Fill a good decalcification fluid in the waterreservoir. Press both buttons for cleaning and grindet coffee at least for 3 seconds. The esam starts with a cleaning program which also reaches the piston. (2) Perhaps you have to change the valve for steam/hot water.