Qi Jun air conditioning temperature sensor voltage how much compressor shutdown?

Usually, high pressure and low pressure are based on the measurement of the ambient temperature of 35 degrees Celsius. Normal high pressure should be 1.3 to 1.7MPa or 13 to 17kg or cm, and normal low pressure should be 0. 15 to 0.25MPa or 1.5 to 2.5kg or cm.

Working principle of high-voltage switch: During the use of automobile air conditioner, the system pressure will be too high, and if it is not controlled, the system components will be damaged. The high-voltage switch is installed in the high-voltage pipeline, generally on the liquid storage dryer, and is connected in series with the electromagnetic clutch circuit of the compressor or the fan circuit of the condenser. When the system pressure is too high, the high-voltage switch acts to cut off the clutch circuit or connect the high-speed gear circuit of the cooling fan to prevent the pressure from rising continuously and avoid system damage.

Usually, after the air conditioner is turned on, the evaporator keeps cooling. When the temperature reaches the set temperature, it sends a signal to the compressor to stop working. If it keeps sending signals to the compressor, the compressor will keep working. Sometimes the evaporator freezes because of this.