CHECK TO SEE IF FAN WORKING IF NOT WORKING THERE IS A P.C.B. THAT CONNECTS TO FAN MOTOR ON REAR OF COOKER ,THAT CAN GO FAULTY SO YOU DONT GET ANY AIR FLOW FOR GRILL OR OVEN  CAUSING IT TO OVERHEAT AND SHUT DOWN. SERVICE ENGINEER FROM NEW WORLD HAS JUST REPLACED MINE ALL OK.CONTACT NEW WORLD THEY CAN OFFER A SERVICE CONTRACT FOR £14.90 A MONTH TO REPAIR  AND 12 MONTHS WARRANTY
                 VW SPARKY
                
 February 2009