Miele KWFN 8705 SE ed Operating And Installation Instruction page 30

Condensate and frost can build up on
the back wall of the wine cooler whilst it
is in use. These are automatically
removed and defrosted by the
appliance.
The condensate is drained away via a
channel and drain hole into an
evaporation system at the back of the
appliance.
Ensure that the condensate channel
and drain hole are kept clean and
are never blocked so that
condensate can flow away without
hindrance.
30
This freezer is equipped with a "Frost
free" system. The freezer section
defrosts automatically.
The moisture generated by defrosting
collects on the condenser and is
automatically dissipated from time to
time.
This enables the freezer section to
remain permanently ice-free while the
food remains frozen. This system will
not cause food stored in the freezer to
defrost!