Can you post the full model number please.
Also is it a fan assist oven?
If so is the fan running?
Does the little red light come on the front panel when you turn the oven on?
The model number is ***** a sticker at the bottom of the main oven. Open the oven door and its at the bottom there.
Also just checking it was the round fan element you replaced?
That's it thanks.
If you have replaced the element and the little light is coming on then the thermostat is fine.
Its more then likely the thermal cut out stat on the back.
If you remove the back panel and look to the right in the bottom oven cavity you will see a small thermostat with 2 wires going to it. You need to test this with a multi meter and see if faulty. If it is then the thermal cut out is faulty and will need to be replaced.
Check that out and see what you find and let me know.