What are the reasons for high pressure on both sides of a car's air conditioning system?
2 Answers
Car air conditioning system experiencing high pressure on both sides can be caused by air in the system; system blockage or malfunction. The functions of an air conditioning filter include the following 3 points: 1. Providing fresh air: Prevents car windows from fogging up, ensuring clear visibility for the driver and safe driving; supplies fresh air to the cabin, preventing occupants from inhaling harmful gases and ensuring driving safety; effectively sterilizes and deodorizes. 2. Ensuring safety and hygiene: Maintains clean air in the cabin, preventing bacterial growth; effectively separates solid impurities such as dust, powder, and grinding particles from the air; efficiently blocks pollen, ensuring that drivers and passengers do not experience allergic reactions that could affect driving safety. 3. Adsorbing harmful substances: Adsorbs moisture, soot, ozone, and odors from the air, with strong and long-lasting moisture adsorption capabilities.
I've been driving for over a decade and have encountered the issue of dual high AC pressure several times. The most common causes are overcharged refrigerant, improperly adjusted expansion valve, or problems with the AC compressor, leading to increased high and low pressures. The cooling system also plays a crucial role—if the condenser fan isn't working or the cooling fins are clogged with dust, heat exchange efficiency drops, causing both pressures to rise. Air or moisture mixed into the system can increase the overall system load, resulting in this condition. Long-term neglect not only reduces AC cooling efficiency but may also lead to pipe leaks or even compressor damage. It's recommended to visit a professional repair shop for inspection immediately. Regular maintenance, such as cleaning the radiator and periodic pressure checks, can effectively prevent such issues. Remember, AC failure while driving is dangerous, especially during hot summer days.
