What Causes High Pressure in Car Air Conditioning?
2 Answers
Reasons for high pressure in car air conditioning: 1. Incomplete evacuation during maintenance, leading to air mixing into the system and increasing condensation pressure; 2. Use of inferior refrigerant, the condenser's electric fan cannot open normally or the wind speed is insufficient; 3. The condenser is blocked by foreign objects and cannot dissipate heat normally or the expansion valve is slightly clogged. Car air conditioning refers to the air conditioning device installed in the car, which can cool, heat, ventilate, and purify the air inside the compartment, providing a comfortable riding 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 functions.
I recently encountered a similar issue, and there are quite a few reasons why a car's AC high pressure might be too high. The most common cause is a clogged condenser, especially in summer when dust buildup leads to poor heat dissipation and a spike in pressure. Another possibility is a non-functioning fan, which could be due to electrical issues or a faulty fan motor. Overcharging the system with too much refrigerant is also a dangerous factor that can cause excessive pressure. Prolonged high pressure can accelerate compressor wear and even lead to pipe bursts, which is quite alarming. I recommend first checking if the condenser is clean and verifying the fan's operation. If the problem persists, it's best to visit a professional shop for a pressure gauge test—don't attempt DIY fixes that might damage the AC system. Regular maintenance, like cleaning the condenser, can prevent many of these issues.
