Cause not known.
As soon as the steam button has been activated, the descaling process cannot be stopped. It must now be completed through to the end. This is a security setting to ensure that the appliance is completely descaled.
Press ENTER once.
The programme is closed.
If there is descaler in the water container, empty the water container.
To make sure that no descaler residue is left in the water container, rinse the water container thoroughly with clean water.
