Hi I have a built in hotpoint oven sa2 540 h ix which has a flashing LED “F24” error code and nothing works. There is nothing in the manual on this number. I tried switching it off at the mains and back on which seemed to temp fix it so I could grill some turkey last night, but I woke up this morning and it has returned. The bulb did go last week so i’m going to replace that today and see if that works, but could it be anything else? There is nothing online except an article about buttons being stuck but im confident it’s not that as they are on the glass bit. Please help !!