Issue at over 20 degrees ambient air temp

2MT Paul said:

Hi All

Looking for a little help if possible. 2018 A4 B9 S-line Quattro

The issue only happens on day where air temp is over 20 degrees, On starting up all is fine and the blower blow ice cold then after about 60 secs I get what sounds like flaps closing in the dash and the cold air stops, however the fans can sill he heard blowing.

No if I turn the interior temp up to about 26 degrees cold air starts to flow again but not a real good blowing. These 'flaps' do seem to open at random times but do again close up again.

I have looked for error but only have Carista and get the following

Heating and Air Conditioning Faults 2

327971 Manufacturer specific Code

328003 Manufacturer specific Code

So far I have not found the meanings of these codes, any help greatly appreciated,,,,,

Paul

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2MT Paul said:

As I have got no where with this, Its booked in on 5th July for investigation.

Thanks for looking.

Paul

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2MT Paul said:

Thanks, finger crossed.....

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2MT Paul said:

Very helpful, I've printed if off and will leave it in the passenger seat when it goes in

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2MT Paul said:

Evening all

Can now back from investigation work and the technician was grateful for the above information and it did help for sure.

Simply put it was the flap motor at fault and not functioning consistently.

Part required:
AUDI AIR CONDITIONING SERVO MOTOR (VARIOUS MODELS) 4M0820511A

This is now on order and will be fitted on arrival.

All covered by the warrantee I have in place

Hope this helps anyone else in the future.

Cheers Paul

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