if the top oven woirks then it's wired OK
Sometimes on some ovens the clock/timer controls the big oven - you need to set the clock before it will work - sometimes when cleaning the front the timer gets set into Auto Mode and the big oven is disabled - on my oven when this happens I cycle the power to get the clock to flash then press & hold buttons 2&3 and set the time - then the big oven works.
Peccavi
November 2009