Miele CVA 7440 Operating And Installation Instructions page 72

Frequently Asked Questions
Problem
A maintenance program
is prematurely aborted
and the following
appears in the display:
Push the water container in
until it engages .
F233
F 307 or Remove the milk
valve and clean it
72
Possible cause and solution
The water container has not been filled and inserted
correctly.
 Check that you have filled to the correct mark.
The symbols marked on the water container indicate
the amount of water required for the
Descale the appliance
maintenance programs.
 Fill the water container up to the relevant mark and
restart the process.
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 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.
The milk valve is faulty.
 Remove and clean the milk valve (see "Cleaning
and care – Removing and cleaning the milk valve").
:  and Clean milk pipework : 