Why does the air conditioning blow cold air while driving, but not when stopped at a traffic light?

The rear air conditioning vents are not blowing cold air?

The air conditioning panel of the Haima S5 is flickering, but it stops flickering when the parking lights are turned on!

When the air conditioning blows cold air for a while and then switches to hot air, and after being turned off for a bit, it works again before reverting to hot air, it's puzzling. Interestingly, this issue doesn't occur on rainy days or when the weather isn't too hot. What could be the cause of this situation?

I've got a 2014 Grand Cherokee, and lately when I turn on the heater, the driver's side vent blows cold air while the passenger side vent blows warm air. Does anyone know what might be causing this?

What's going on when the heater in a Changan Yuexiang is blowing cold air?

Does your Santana's engine shake when you turn on the air conditioning for cold air?

When the air conditioning is on and blowing cold, the car shakes a lot, especially when stopped at a red light. It's uncomfortable. Do any of you have this issue with your car?

When I use the air conditioning for a longer time in the summer of 2019, the cold air stops blowing inside the car. Does anyone know why?

What could be the reason that the air conditioning in my 2011 Phaeton blows cold air before hitting the highway, but gets warmer the longer it runs?

Why does the air conditioning blow cold air while driving, but not when stopped at a traffic light?