Re: smeg oven fan stops
You cannot re-calibrate any of the thermostats. So, which one is faulty? Set the oven to a low temperature (say, 150c) – the heating lamp should come on. If the oven reaches temperature, the lamp should go out. This will prove that the oven thermostat is cycling as it should, therefore the safety cut-out is the one at fault.
Most SMEG ovens also have some sort of cooling fan in addition to the oven fan – is this running?
Also, please re-check the model number as I won’t be able to identify any spare part numbers from the info given.
Regards,
Penguin45.