this mod adp3250 customer says it keeps tripping rcd after a few mins when the grill is used ive changed the element and the stat with no joy so i took the oven home and tried it, all is ok? they have had a electrician in to check the supply out any they say it is all ok. i have heard of nuisance tripping mentioned before but not come across it. has anyone else and could that be the fault? 😕 😕