Frequently asked questions
Problem Possible cause and solution
F233 The cup-rim sensor is not inserted or is incorrectly
inserted.
If the central spout is moving upward and the cup-
rim sensor is bumped, e.g., with a cup, the cup-rim
sensor loses its reference position.
Confirm the message withOK.
Reinstall 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
reinitialized 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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