Hello dear people, I bought a V70 D5 year 11/2014 cared for by Volvo about 2 months ago. Currently mileage about 102,000km. For a few weeks now I have noticed a strange steady noise with switched on air conditioning. This annoying noise is louder than what the air conditioning gives itself when it is turned on. It is not a rat, but also not a squeaking, but sounds like a kind of loud dull (?) fan wheel. As I said, I turn on the wheel. the climate off, then it is completely gone and when I turn it on the noise is back again. No matter how strong I adjust the climate the noise remains the same loud and is constantly there. What can that be?