it means the waterproof system has activated- something has leaked into the machine or the hosepipe has been damaged- basically if it wasnt a miele you would have a flooded house. the washer needs the front panel taken off and the inside "Leak Tray" needs to be totally dried- there is a grey disc about the size of a cup mat inside there- there will be water around that. Either vac it out or mop it out. power it up and you will see there is a leak. Sometimes the filter door leaks- thats enough to trigger it- might need a new seal!- or call miele service
paul short
March 2010