Hi, so this is an information post. My radiator fans were not spinning when I switch the air conditioning on (2010 superb 2.0 tdi dsg with climatronic) the car is not overheating either.

 

The air conditioning worked great, nice and cold when driving. I had the a/c refrigerant level and pressure checked and were fine. I replaced the radiator as it was faulty, but the new radiator was still not spinning.

I have also checked the fuses in the cabin and in the engine compartment e-box (blade fuses and strip fuses) and they all seem good.

 

So I replaced the a/c pressure switch situated at he front of the a engine bay on the left (circled). You will need a 17mm crow foot spanner (pictured) attached to a long extention to get the old pressure switch off and the a/c system won't need degassed as it's on a schrader valve.

Fans spin now and a/c works perfectly👍👍👍

Thanks for the informative post...!  Good you have your air con sorted.