I just found same fault on my own drier after checking heating element, cabling etc. I should have checked the web first. The switch in question is readily available online for about £15. A couple of notes of caution... for a technician fitting the switch is easy but take care that appliance is checked for any other related fault (in case it's not just the switch at fault). Obviously appliance must be unplugged before any repair is attempted as switch may be live. See also cautioary note on foot of page.
Peter Mc
September 2007