www.thetfor-europe.com
click on Service  WATCH THE DROP DOWN CLICK DOWNLOADS THEN CLICK CASETTE TOILETS SELECT  C200  SELECT REPAIR INSTRUCTIONS (Shown feint below the highlighted print.  AND FLIP THROUGH PAGES USING RIGHT HAND ARROW ON WINDOW THAT SHOWS. You should be able to save to your computer I did not have much luck but my computer is problematic .
Hope it helps (could be switch or could be pump has given up.
Check current in cable as well when pressing switch with pump out but IN water do not run pump dry if it is ok you'll damage it.
                
 BobUK
                
 February 2014