link1 year ago000The hoover is suddenly very loud. We have cleaned the filter and everything else. Unfortunately, I can't find any operating instructions online. Can anyone help?Show in original language (German)matthsupay51 year ago000 Helpful answerWe had something like that once, something had got stuck in the pipe.Show in original language (German)CommentMRoemmel1 year ago000Here is the link to the operating instructions:https://www.philips.ch/c-p...Show in original language (German)Comment