Hi there. Is the above situation normal. Even from engine cold when I started the car this afternoon the engine fan came on as the AC was on. When I turn the air con off again the fan stops. But it is loud enough to hear over the engine when stationary. The car is a 1.9 tdi pd 105. Just recently bought the car so am just getting used to what’s normal. Many thanks

Yes. When A/C is switched on, rad fan is triggered by refrigerant pressure exceeding a threshold value, independently of any engine coolant temperature trigger.

Thank you Wino. I don’t need to have the refrigerant drained and re-gassed then? 

Not unless the cooling of cabin air isn't adequate. If it ain't broke, don't fix it.

 

 

 

Aye, fan on with ac is normal

Edited 13 July, 20187 yr by Excision

The fans force air though the condenser to cool it, it's not like fridge or freezer they don't have them, just a big black grid on the back or where the compressor is.

 

Trev