The oven works ok at all temps up to 200C at 200 and above it works for about 20mins and then cuts out but left for about 30 mins it comes back on. I have checked all the fitting dimensions in case it was over heating. I have checked all the electrical connections they’re fine I have even removed it from the cabinet sat it on supports and operated it and it still does it. I’m thinking faulty thermostat but any thoughts would be most welcome