What to Do When the Car Air Conditioner Stops Blowing Air After Running for an Hour?
2 Answers
There are several possible reasons why a car air conditioner stops blowing air after running for an hour: 1. Poor heat dissipation of the air conditioner, slow fan speed, or a dirty air conditioner. 2. Compressor damage. 3. Damage to the compressor's overheating protector. 4. Temperature sensor failure. 5. Insufficient refrigerant, leading to poor cooling performance. Here is some additional information: 1. The indoor temperature should not be set too low, as it may be harmful to the human body; adjust the temperature appropriately. 2. If the indoor temperature feels too high, you can lower the set temperature slightly. 3. Effective use of the timer can achieve both energy savings and comfort.
I've driven for many years and encountered the issue of sudden loss of air conditioning airflow quite a few times. Usually, it stops working after driving for about an hour, possibly due to the fan motor overheating and shutting down or the AC filter being too dirty and blocking the air ducts. I suggest you first pull over, turn off the AC, wait a few minutes, and try again—sometimes it resumes working after cooling down. Check the AC-related fuses in the car's fuse box; if any are blown, replace them. If the fan makes unusual noises, the motor might be faulty. Don’t skip regular maintenance—clean or replace the filter periodically to prevent many issues. Safety comes first while driving; if the AC fails, open the windows for ventilation and head to a repair shop as soon as possible to check the circuit and control module.
