I have a zanussi washerdryer turbodryer 1000 model wda1055w serial no:10400283.The dryer is not working, I have taken the top off, the fan belt is going round,I can hear trickling water and what I think is the outlet covered in silver foil for the warm air is quite warm.But when I open the door to the washer the clothes are still damp and the drum is still cold, but if I put my finger inside the outlet at the top of the drum that is quite warm.Any thoughts on what is wrong!!! thank you