Melitta Caffeo CI E970 - Water in drip tray

Hello everyone
,I have a problem with my Melitta Caffeo CI E970, year 2017, about 9000 covers.

The water ran into the drip tray, so I have replaced the drain valve and also immediately the outlet valve and the associated seals.

Now when I start a flush, everything runs as it should. Also powdered coffee runs correctly. (I didn't want to put beans in for now to prevent unnecessary messes)

However, when I do a descale or rinse, a lot of the water runs through the drain valve into the drip tray

.

Additionally, it drips down the inside of the cabinet all weird. And there's no end to the descaling, so apparently the machine must sense something is wrong.

Have already tried three different brewing units which work in my other machine - always the same. So a defect in the BE can be ruled out.

Anybody got any ideas?

Thank you and best regardsSaschaMelitta


Caffeo CI