How does air conditioning pressure switch work?
Jetta air conditioning three line pressure switch works:
(1) three lines, one 12v.
(2) the other one is a high-voltage switch, one is the atmospheric pressure switch, the pressure is too high will disconnect the compressor electromagnetic clutch.
The three wires of the air conditioning plug are connected to the plug:
(1) Fire wire (mostly red or brown) connector or socket L interface,
(2) zero line (mostly blue or green) then N interface,
(3) ground (two-color) then E interface.
Air-conditioning pressure switch works: When the system pressure is higher or lower than the rated safety pressure, the sensor disc instantaneous movement, through the connecting rod to push the switch connector connected or disconnected, when the pressure dropped to When the rated pressure is exceeded, the disc is instantly reset, the switch is automatically reset, or simply when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, directly or after comparison, pushing the switching element, changing the switching element Of the state, to achieve the purpose of controlling the measured pressure. The pressure switch uses elastic elements such as single-ring spring tube, diaphragm, diaphragm and bellows.
