Its probably just the thermostats.. there's usually 2 of them located on the rear of the machine..(note.. I'm not familiar with your machine but i think they all work on the same principle though)
Normally cost about £17 for the pair... replace both. Take a pic that shows wiring position... 2 wires into each stat... it really is simple.
Hope this helps.. I've just replaced mine on a Hotpoint and it took 15mins to do and I've never done anything like this before.. :-) if i can help anymore just post on here...
Ian
Ian
December 2006