What is the role of the air conditioning pressure switch? Is not the air conditioning pressure is too high, the compressor and the fan will not work ah?
The pressure switch is closed according to the air conditioning pressure regulating clutch.
High pressure is too high, low pressure is too low, will stop the compressor and fan.
Adopt the answer Oh
Pressure switch in the automatic control everywhere, installed in the automotive air conditioning refrigerant circulation pipeline, the detection of refrigeration system pressure, when the pressure is abnormal to start the corresponding protection circuit to prevent damage to the system. Common pressure switch mainly high voltage switch, low voltage switch, double pressure switch and triple pressure switch and so on.
In the use of air conditioning, when the heat sink is blocked, the cooling fan does not turn or refrigerant excess and other abnormal conditions, the system pressure will be too high, if not controlled, too high pressure will damage the system components.
The high-voltage switch is mounted in a high-pressure line and is normally mounted on a liquid drier in series with the compressor electromagnetic clutch circuit or the condenser fan circuit. When the system pressure is too high, the high-voltage switch action, cut off the clutch circuit or connected to the cooling fan high-speed circuit to prevent the pressure continues to rise, to avoid damage to the system.
