159 Climate Control Temperature Issue
I have a problem with my 20007 159 which I've been living with for 2 years now. In the mornings when it's cold the climate control seems to blow very warm air (sometimes stifling) even when set on 16 degrees. This does settle down when the interior is up to temperature, but it's ridiculously hot air coming out when the cabin is not near the desired temperature.
It's rather annoying as there is no middle temperature setting, and when I first bought the car I set the temp to 21 (same as my Audi a6) and after 5 mins almost boiled to death and had to open the windows to cool the interior down.
I now live with the temp set at 16 degrees and am constantly switching between "LO" and 16, I rarely adjust the temp above 16.
On my commute to work (28 miles) after 15 miles the cabin is then nicely at an even temp and the air coming out of the HVAC is what I'd expect. A friend has recently got an 2011 Guilletta and this doesn't perform like this so I'm thinking something definitely wrong.
I'm thinking a sensor is at fault somewhere, is there a roof interior temp sensor? It feels like the HVAC cannot tell it's too hot until the warm air reaches the sensor on the HVAC control unit, at which point the car interior is much warmer than the set temp and only then the heat is turned down from the HVAC and the temp in the car starts to settle.
My A/C needs re-gassing (not sure if this has any bearing) and I do have Multi-ECU scan.
Any help appreciated as this is getting a bit annoying now. My initial thoughts lead to some sort of roof temp sensor failure? Or could it be the one with the fan on the control unit?