Problem solving guide
74
Issue Cause and remedy
F233 The cup rim sensor is not inserted or is incorrectly
inserted.
If the central spout is moving upwards and the cup
rim sensor is bumped, e.g. with a cup, the cup rim
sensor loses its reference position.
Confirm the message withOK.
Refit the cup rim sensor.
Cup rim detection remains inactive and the central
spout stays in the top position until the coffee
machine is next switched on. Cup rim detection is
reinitialised during the next switch-on operation.
F307or Remove the milk
valve and clean it
The milk valve is faulty.
Remove and clean the milk valve (see “Cleaning
and care – Removing and cleaning the milk valve”).
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