What is the principle of automotive air conditioning pressure switch
Air conditioning pressure switch usually has three lines, a 12v. The other two are a high voltage switch, one is the atmospheric pressure switch, the pressure is too high will disconnect the compressor electromagnetic clutch, when the high pressure side of the pressure is higher than a certain value, high voltage switch It opens, so that the fan high-speed turn, not because of high pressure damage to the system
The pressure is less than a certain value of the compressor does not work ah, so that will not damage the compressor.
Hello! Pressure switch is to detect the pressure of air conditioning pipelines, and then the pressure signal sent to the air conditioning control system, play a role in protecting air conditioning compressors and piping! Only the pressure signal in the normal range, air conditioning can work properly!
