It's very unusual for an element to take one of our boards out, although I have seen fan motors do it.
Technical came back to me asking...
Does it happen every time
Does it clear if you power it off and on?
Does it stop oven functionality, both compartments or just one?
1) not quite sure in reference to what, but the error is always there, the top oven won't warm up fully ,except in grill or turbo grill.
2) the error wont clear, regardless of how long you leave it off.
3) bottom oven is fine. It only affects the top oven. Turbo grill and grill work in top oven and will get to temp. The other modes don't, which utilise the bottom element and ring element.
I don't think we ever used the bottom oven grill element and I used it one day and bang.
This element had gone to earth and tripped the RCD.
I isolated the element and then the top oven wouldn't warm up in normal convection mode, just hoovered around 100C.
I thought maybe it didn't like having the bottom grill element isolated, so I bought a new one, installed it and that all worked ok, but the top oven still wouldn't warm in normal convection mode.
So it really seems to be the element going that did it, as it was perfect before.