if its leaking between the door glass and gasket it is possible a build up of limescale is causing the issue if so  clean thoroughly, if its leaking inside the front panel onto floor you must have a hole in gasket which would then need replacing, a simple way of checking is slip a sheet of newspaper in under it and fill it it will leak directly downwards which will indicate where to look for source
                 keymatic
                
 July 2012