>> I have ordered the blue dot Stirrup thermostat and will report back with the results.
It arrived today (great work Zanussi!) and I made its installation into a 20-minute electrical engineering lesson for the boys.
It hasn't fixed the problem :/
I don't know whether the cooling fan is supposed to operate from the moment the heating element is switched on; or whether it should only fire up a minute or two into the heating-up period when the temperature of the cavity rises above a preset point. The thermostat I replaced today doesn't have a probe of any sort; it's screwed to the outside of the cooking cavity and measures the temperature of the metal it's screwed to.
I'm beginning to wonder if it's an electronic control unit fault... time to see if there's a relay somewhere.
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