: Purge with a small amount of steam after every use and wipe the outside.
Users on forums like McGrp.ru and Komtra often highlight these common issues: bosch tca 4101 forum instruktsiia
: Fill the water tank and ensure the filter holder (portafilter) is clean. : Purge with a small amount of steam
: Place the sieve for either one cup (11a) or two cups (11b) into the holder. bosch tca 4101 forum instruktsiia
: This is frequently caused by a worn-out large round sealing ring at the top of the brewing unit.