Right. My mistake - again. The only thing I have paid is the call out charge plus the part. I thought I had paid the call out fee up-front, but that's not the case. So not too bad. jj4091 thanks for making me look into it.
Yes you are correct and that was my mistake: not understanding the difference between the 2 fans.
I did get the Bosch service technician out and he replaced the top cooling fan and that fixed it.
However - and I hope this helps others - the cost for the Bosch fix was (approx) £105 for the call...
Hi,
We inherited this oven when we moved in about 18 months ago. It was installed new about 6 or 7 years ago. It is one of Bosch's top of the range series 8 models.
Prouduct: https://www.bosch-home.co.uk/product-list/cooking-baking/ovens/built-in-ovens/HBG674BS1B
After turning the fan oven on...