What Causes High Low Pressure and Low High Pressure in Car Air Conditioning?
1 Answers
High low pressure and low high pressure in car air conditioning may be caused by a malfunction in the compressor or expansion valve. Under normal circumstances, the high-pressure side of a car air conditioning system should be around 1.5-2.0 MPa, while the low-pressure side should be around 0.15-0.35 MPa. If the pressure in the car air conditioning system is abnormal, it indicates a problem with the system, and it should be inspected and repaired at a service center. More relevant information is as follows: 1. Car Air Conditioning Structure: A car air conditioning system generally consists of components such as the compressor, electronically controlled clutch, condenser, evaporator, expansion valve, receiver-drier, piping, condenser fan, vacuum solenoid valve, idle speed controller, and control system. 2. Car Compressor Range: Under normal conditions, when the compressor operates at 1500-2000 rpm, the high pressure should be around 1.5-2.0 MPa, and the low pressure should be around 0.15-0.35 MPa. If the ambient temperature around the vehicle is high, the high pressure may reach around 2.5-2.8 MPa, but it generally should not exceed 3.1 MPa.