The water container is not positioned properly in the appliance.
Remove the water container and then insert it again.
System filling up appears on the coffee machine display but no water is being drawn in.
Remove the water container and then insert it again.
Descale the coffee machine.
In addition, check whether the selected water hardness matches the actual water hardness.
Check whether the float switch on the side of the water container moves when the container is shaken. Clean the water container if the float switch is jammed.