What happens if the high pressure of a car's air conditioning is too high?
2 Answers
Excessive high pressure in a car's air conditioning system can lead to reduced cooling efficiency, increased working pressure on the compressor causing it to overheat, resulting in intermittent operation or complete failure. Reasons for excessively high pressure in the car's air conditioning system include: 1. Incomplete evacuation during maintenance, leading to air trapped in the system and increased condensing pressure; 2. Use of substandard refrigerant; 3. Overcharging of refrigerant; 4. Failure of the condenser's electric fan to operate properly or insufficient fan speed; 5. Blockage of the condenser by foreign objects, hindering proper heat dissipation; 6. Slight blockage of the expansion valve. Car air conditioning refers to the air conditioning device installed in vehicles, which can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The air conditioning system has become one of the indicators to measure whether a car is fully equipped with necessary functions.
Last time my friend's car had excessively high AC system pressure, the entire system just shut down. You could clearly hear the compressor making an unusually harsh, buzzing noise. The temperature gauge on the dashboard also showed abnormally high readings. The cooling effect became extremely poor - even after running for a long time, the car interior remained stuffy and hot. The most troublesome part was the cooling fan spinning wildly like it was about to fly off. I immediately advised him to turn off the engine and inspect, and we found the condenser completely clogged with leaves. Excessive high pressure can also damage the compressor pistons and seals, leading to expensive repairs. I recommend shutting off the engine immediately for inspection when noticing abnormal AC noises or rising coolant temperature to prevent more severe damage.
