What are the common faults of car air conditioners?

[MacSienna]

Common faults of car air conditioners include unsatisfactory cooling effect, insufficient or no air flow in the air conditioning system, and system not cooling. Here are some tips for using car air conditioners: 1. Ventilate before turning it on: After the car has been exposed to the sun for a long time, open the four doors and the sunroof to allow air to circulate inside the car for 3 minutes. This can quickly lower the temperature inside the car, making the air conditioning more effective. 2. Use the internal circulation wisely: The internal circulation blocks the hot air outside, creating a closed space inside the car, allowing the air to circulate quickly under the effect of the air conditioning for rapid cooling. Once the temperature inside the car has dropped, it is recommended to turn on the external circulation every 30 minutes to purify the air inside the car, and switch back to internal circulation after 5 minutes. 3. Turn off the air conditioning in time: Turn off the air conditioning 5 minutes before parking, which not only protects the engine but also saves fuel.