I'm pretty sure the temp dial (that can be set to 18 degrees) only has an effect when the aircon is set to AUTO mode - if you switch it to manual and keep the fan at full power, it will continue to blow out cold air - though, as floyd501 said - why would you want to sit in an igloo!?!?!
if you dont want the car to revert back to slower fan rates at 18 degrees grebo , make sure that the AUTO function is off, also I believe on the 33 you can set it for Quck Cool option and Also Fast Warm as an alternative, if you want I will try and find out the diags for the CC for you.
There is an Uber-cooling mode I believe on the R32, and others I presume. While you can't set BELOW 18, it will pump it out more than with the fan on full on a/c.
I think you set max/min (dep on whether you want hot/cold) then press and hold the temp button in the desired direction for 5 seconds. It should display FC of FH in the screen to show its on that wacky mode.
It does exist, I've used it. Its just that I may not be right about how to turn it on...
To keep really cool make sure that you select recirculating air. That way you will keep cooling the air in the car and not try to cool down fresh incoming air from outside........other than that no other suggestions!
Trick isn't in the manual, not mine anyway. I got it from somewhere on the net. Sure it is saved on my PC but its in bits on the coffe table just now having a vapour chiller installed. Shall have a looksee later when its fired up again....
NismoUK , where did you get yours recharged ? I need my 92 R32 doing (talked to Richard Bell but he thought it might take the old style fluid (r12?)) did you have any probs getting it done?
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