Miele KF 7500 SNE ed-3 Operating And Installation Instruction page 37

The drain hole is blocked.
^ Clean the condensate channel and
drain hole.
If you still cannot remedy the fault
having followed these suggestions,
please contact the Miele Service
Department.
To prevent unecessary loss of
temperature it is advisable not to
open the door while waiting for the
appliance to be serviced.
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