to save energy. if it alternated between the directions it needed more energy to stop rotating in one and start rotating in the other, while one direction only needs energy to keep rotating (not much).
Sounds like you cooling fan is not working.
The fan may still be running because it is set to circulate air even when the AC is off. This helps to keep the air in the room moving and maintain a comfortable temperature.
Make sure the radiator fan is working when the AC is on.
No. Me No High AC Fan
It's purpose at that time is to keep air moving over the AC condenser. The AC condenser is located in front of the radiator. The high pressure side of the AC would overheat or would develop too high a pressure if it were not cooled by airflow when the AC is functioning.
Your AC may be squeaking due to a worn-out fan belt or lack of lubrication on moving parts. To fix it, you can try tightening or replacing the fan belt, and lubricating any moving parts with appropriate oil or grease. If the issue persists, it's best to contact a professional HVAC technician for further inspection and repair.
Why does your ac and heater fan turn off and on
Broken fins in the fan or a bad compressor. Or leaves and sticks stuck touching your fan for the ac side (assuming you have a separate fan for ac which you might not).
is AC, bro...
AC
Most likely the electric cooling fan motor in front of the radiator is not working. When the AC is on the cooling fan motor pulls heat out of the AC condensor which is located in front of the radiator. When you are driving on the freeway enough air is forced through the condensor to keep the engine cool but when you stop there is no air moving through the radiator or condensor so no heat is being removed and the engine gets hot. When you have the AC on check to see if the radiator fan is on, if not then either the fan motor is bad or there is an electrical problem.
A fan.