When you set the oven going does the fan run ok and does the small thermostat light come on?
Also has this only happened after replacing the grill element?
Ok can you post a picture of the back of the oven with the panel removed so i can see the wiring. As it sounds like it could be a wiring issue if it happened just after replacing the grill element.
No worries thats fine.
What ive done instead is uploaded the service info on this. In there is the wiring diagram. Have a look at that and check the wiring. As the neutral feed is linked through the grill element so that could be were the fault is with the wiring link.
So check that first and see what you find. If the wiring isnt the case then just get back to me.
Your very welcome.
Just wondering how you got on with the oven as the question is still open and ive not heard back from you.