Creda Europa 48145 oven cleaning cock up

A friend of mine who lives a distance away has had an oven cleaning firm round. Oven bulb blew immediately he had left and they came back to replace it saying they had probably not dried the socket completely 😯 .
Now when they use it the cooling fan runs all the time which they say has never worked before :rolls: .

Is there a trigger pcb on this relic or is it a stat which controls the time out on the fan. Anyone have a dusty manual hanging around in their drawers :clown:

Cheers

TC