People should be aware there is also a fan, possibly plural, in the center console computer that spins when the computer gets too warm. As far as I know, this is thermostatically controlled with no ability to override it one way or the other. On a hot day it spins. There is no perceptible airflow in the car when this noise is happening. Nothing blows out the vents.
As opposed to the HVAC system, which is separate, and blows out the vents that you can adjust and feel the air. You have control over this from the App to cool or warm the car.
My question is, when the fan reported in this thread is blowing (even though you're sure you didn't turn it on, and there is no smart pre-conditioning feature enabled).. what does the App report? Is it showing HVAC on a cooling mode? Can you turn it off?