Replace the rear cover and call out the service agent, play dumb - they should repair it free of charge. If no joy, the seal is held in place by a channel running round the circumference. This channel locates in the oval hole which the element appears to have come from. Try to work it back in again to form a watertight seal.
Check out my site for info: www.2ndwave.co.uk/manual.html
washerman, March 2008