What Are the Causes of High Pressure in Car Air Conditioning?
1 Answers
Here are the reasons for high pressure in car air conditioning: 1. Insufficient cooling water flow or excessively high water temperature. 2. Excessive buildup of dirt in the condenser copper tubes, leading to poor heat exchange efficiency. 3. Excessive refrigerant. 4. Air presence in the air conditioning system. 5. Expansion valve failure. 6. Cooling fan malfunction. 7. Engine overheating. Below is additional information on how to check car air conditioning pressure: 1. The red gauge indicates high pressure, while the blue gauge indicates low pressure. 2. The black circle inside the air conditioning pressure gauge typically shows normal refrigeration pressure between 0.4 to 0.5 MPa, and normal heating pressure between 1 to 1.5 MPa. 3. The outer ring unit of the air conditioning pressure gauge is MPa, representing the refrigerant's evaporation temperature, with the outermost scale displaying the refrigerant's pressure value.