Re: SMEG SE335SS keeps tripping out
Is this on the fan oven setting, and was it the fan element that was replaced?
It may just be that the new element is tripping, sometimes it happens (although normally in the winter when elements have been stored in cold humid warehouses)
It may also be that some wiring is earthing somewhere but IME experience that only happens on old grease-soaked cookers.
If it was replaced only recently then the best bet is to give the repairer another call 😉