The condenser unit has probably come away from drum, very common, hell to fix, part replacent cost 11-10-06 £54.24p.
It's attached by 2 screws on the heater element box, one bolt right hand side half way down unit and 3 screws at the bottom with 7mm nut heads. These are very difficult to access.
The problem arises because the unit is made from nylon or polypropelyne and is attached to steel at all points.
Part no is 1601754-WD51
Howard Lane, October 2006