I know nothing of tumble dryers but I would suspect that a fan blows air over a heating element and the warmed air is used to dry the clothes - you have no heat so either the fan is not working and a thermal fuse may have melted to shut down the element (possibly) - OR - the heating element is defective.
You could dive inside and check it out or call an engineer or get a friend to fix it or buy a new one or just revert to outside drying.
Whatever you decide - Good luck...
Peccavi, July 2009
