The float switches in the water container have got stuck.
Clean the water container:
Remove the water container after each use. To do this, push it upwards slightly as you take it out of the appliance.
Empty the water container. Water can drip into the container compartment when the water container is removed.
Dry the compartment.
Rinse the water container by hand or in the dishwasher. The water container is dishwasher-safe.
Dry the water container with a cloth to prevent limescale.
Descale the water container:
Rinse the water container with clean water.
Fill the water container with lukewarm water.
Add 1 descaling tablet to the water container.
Leave the descaling solution to work for approx. 10 minutes.
Clean the float switches with a small bottle brush.
Thoroughly rinse out the water container with clean water.
For thorough and gentle descaling of the water container, we recommend genuine Miele descaling tablets that have been formulated for use with your appliance.