ck's answer is correct - from my experience. However I managed to get a replacement thermal fuse from a small electrical appliance retailer / repairer - at a fraction of the price of a new element. Good luck!!
DB
February 2008
think there is two thermal links built into element.normally you find one or the other open circuit.you will need a multimeter to test this and you will have to remove back panel to gain access to heating element.if it is this then you have to buy whole element.not that cheap!!!
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix tumble dryers.