Fault F233 appears on the coffee machine display (built-in appliance).
The cup rim sensor is located under the central spout. Clean the cup rim sensor at least once a week and more often if heavily soiled.
Proceed as follows to clean the cup rim sensor:
Press the two latches together, see Fig. 1. The cup rim sensor is released.
Clean the cup rim sensor in the dishwasher or by hand using warm water and a little washing-up liquid.
To refit the cup rim sensor, press it into the holder on the central spout from below.
Fit the cup rim sensor correctly. 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.
Press the OK button to acknowledge the message.
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.
Position the container so that the sensor can detect the rim.
Use a different container or position the existing one so that the sensor can detect the rim.
Position a container that is tall enough and does not have a spoon in it so that the container is touching the cup rim sensor.
Use a taller container.
Assemble the drip tray correctly. The lid is fitted correctly if it is pushed under the lug on the drip tray, see Fig. 3.
Insert the milk pipework correctly, see Fig. 4.
Insert the central spout cover correctly.
Try to press the central spout, Fig. (2), up slightly.
If the central spout can be moved up, this means the spout is not clipped into place.
Take hold of the central spout at the side and pull the spout down with force.
The central spout audibly clips back into place. The emergency release is revoked.
