Heating noise

Hello dear members, when I brought the calorie of my car to the 4th level, it sounds as if the engine was running like this, and when I took it to the 3rd level with intensive intensity, the sound was stopped at the second level.

The sercan fan may be caused by the bearing of the motor. When we come to Ankara, we compare it with that of my vehicle.

Okay soner, is it not a problem until then guessing?

I do not think that opening the level more than 2-3 times does not cause a problem, the sound increases only, but if there is too much sound, you will close it already.