What are the reasons for the Nissan Sylphy's air conditioner suddenly not blowing air?

[Eliza]

There are three reasons why the air conditioner is not blowing air: 1. Blower problem: The blower is the core component of the car's air conditioner's ability to blow air. If it is damaged, the car's air conditioner will definitely not blow air. The cause of blower failure may be due to internal coil overheating damage or capacitor damage. You can determine if there is a fault by turning the car's air conditioner speed and air volume to the maximum and listening for the sound of the blower. 2. Air duct blockage: The outside air is filtered through the air conditioner filter before entering the car, which can trap many airborne particles, making it prone to blockage. 3. Control system failure: If the above reasons do not apply, then the control system is at fault. The air door, control switch, or the car's air conditioner computer could be the cause of the failure.