Miele CVA 7440 Operating And Installation Instructions page 76

Problem solving guide
Problem
F233
F 307 or
Remove the milk
valve and clean it
76
Possible cause and remedy
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 with OK.
 Refit the cup rim sensor.
Cup detection is deactivated until the next time the
coffee machine is switched on and the central spout
remains in the highest position. Cup detection is
initialised again the next time the machine is
switched on.
The milk valve is faulty.
 Remove and clean the milk valve (see "Cleaning
and care – Removing and cleaning the milk valve").