What could be wrong with my double fan oven 1 year old)? It works, but has tripped the 40A rcd twice. On inspection, one of the connection terminals on the back of the cooker has melted. Does anyone know what would cause this? Trips when main fan oven on for about 20 min. It's on a circuit with the hob, and the wiring was new a year ago

Clare, December 2010