What Causes Normal Low Pressure but Low High Pressure in a Car's Air Conditioning System?

[MelanieDella]

Normal low pressure but low high pressure in a car's air conditioning system is caused by a malfunction or damage to the air conditioning compressor. This type of fault generally requires replacing the compressor with a new one. In a vapor-compression refrigeration system, the compressor is one of the main components. Its role is to pressurize gaseous refrigerant and then send it to the condenser for cooling and condensation. Below are the main reasons that can lead to compressor damage: 1. The air conditioning system is unclean, with particulate impurities being sucked into the compressor. 2. Excessive refrigerant or lubricating oil in the system, causing "liquid slugging" and damaging the compressor. 3. The compressor operates at excessively high temperatures or for too long. 4. The compressor lacks oil, leading to severe wear. 5. The compressor's electromagnetic clutch slips, causing excessive friction and high temperatures. 6. The compressor's power configuration is too small. 7. The compressor has manufacturing quality defects.