Siemens fridge freezer - fan?

[Daljit]

Hi

Siemens KG30NVW25G fridge freezer is cooling the freezer, not the fridge, which sits above. I’ve removed inner rear panels and there doesn’t seem to be any obstruction to the shaft leading from the cooling pipes in the top part of the freezer to the fridge. It’s now been defrosted. When I switch electricity on, I can hear gases / compressor working, however the fan isn’t turning. Before ordering new fan, I just wanted to check if there’s anything else I might be missing?

cheers

Daljit

 

[Daljit]

Just found out fan works when both door switches are activated.

Anyway, will reassemble and see if it works even tho I’ve not done anything to it other than clean a little.