What is the normal pressure of car air conditioning refrigerant?

[SanDiana]

Under the condition of compressor speed at 1500~2000 rpm, the normal pressure of car air conditioning refrigerant is approximately 1.5~2.0 MPa for high pressure (discharge pressure) and 0.15~0.35 MPa for low pressure (suction pressure). Extended information is as follows: 1. Introduction to normal car air conditioning pressure: Normal high pressure should be 1.3-1.7 MPa (13-17 kg/cm2 or 190-250 Lbf/in2); normal low pressure should be between 0.15-0.25 MPa (1.5-2.5 kg/cm2 or 20-35 Lbf/in2). 2. Introduction to normal car air conditioning pressure at idle: At idle speed, if the ambient temperature is high, such as under direct sunlight in summer, the high pressure may be slightly higher, up to about 2.5~2.8 MPa, but generally it will not exceed 3.1 MPa, otherwise the pressure switch will be protected. If the low pressure is higher or lower than this range, it indicates that the expansion valve adjustment is abnormal. If the compressor has problems, it is not within this category.