My oven does not work?

I have an indesit model FDU20IX double oven.Top oven works but the bottom oven would not heat up although the oven light came on, the fan worked and temperature knob light worked. So I bought a new fan element and installed it now nothing works in the bottom oven but the top one is working no problems. Can anyone give me advice. Are there any fuses that may have blown that I don't know about and if there are where would i find them?