Diplomat HD715 / ADP4520 Fan Double Oven?

Hi,
We have moved into a home with a 6 month old fan heated double Diplomat oven. The main oven has stopped heating up and we have no paperwork for it. Does anyone know if it is the element that would have most probably gone so that i can order a new one? Also, i can't find the manufacture website to find out if it may still be under guarantee!
Kind regards
Elaine.