C5 Mk3 2012 1.6 Thp Air Conditioning Not Working

[Brian50]

Hi

 

I have a petrol 1.6 THP 2012 C5 ( 20k on the clock) with the air conditioning not working.  Got a local garage to fully charge it with gas which they did but the compressor is still not working.   They said there was no leaks found.  

 

Any suggestions what it could be, any common faults etc.  Thanks in advance

 

Brian

[paul.h]

I have moved this to the C5 section since it is more likely to be read by C5 owners.

 

To find the fault you may need to have a diagnostic check at a Citroen dealer.

 

When you switch on the air con, (needs the cabin blower to be on also), can you hear the air con compressor kicking in ?

Does the engine fan work since this also needs to run when the air con is working ?

 

It could be a pressure sensor on the compressor is faulty but to check this will need a diagnostic and possibly to replace it the refrigerant will need removing and then putting back in. It could also be a fault with the temperature sensor which prevents the air con working if below about 6°C.

[Brian50]

Many thanks for your help/advice on this. I have the blower on and the compressor does no kick inI can this this when looking at it (the clutch does not move). I have priced a pressure switch from Citroen 115 pounds plus vat!!!!. I also priced a compressor 635 pounds plus vat!!!!

I will check if the cooling fan is cutting in I did not know that if that was faulty it would cause the air conditioning not to work.

 

Thanks again Brian

[Brian50]

Hi I checked if the cooling fan was cutting in andfound it wasn't. WHERE I live Idon't sit in traffic jams so I have never had the car overheating as it did today in my driveway.

 

So it looks as if my air conditioning is not working because my cooling fan on thr radiator is not working.

 

My next question I hope you can help me withis are they any commonfaults that would cause this on the C5. The fan turns freely by hand so it is not seized , and the car has only done 20k?

 

Again thanks in advance.

 

Brian

[Richiejh]

I was going to point out another post but when I looked again it was yours! Doh! Edited May 29, 2017 by Richiejh

[paul.h]

It is a problem when more than one topic is started on the same problem. As a moderator I sometimes end up locking one of them and posting a link to the other or deleting one. Trouble is this wastes time for all of us when we could be replying to something else so some/most times I do not bother.