Don't know if this will be useful.  I had a similar problem where the thermostat had cut out because the vent was blocked.  There was a reset button (though didn't look like anything other than a bit of red plastic) at the back of the machine which I had to press and it worked fine. Check on your manual or get the manual online if you can't locate it. 
Good luck
                
 Valerie
                
 June 2007