Air temperature sensor

When the engine coolant temperature exceeds 120 ℃, in order to protect the engine, make air conditioning stopped working. Air conditioning compressor refrigerant temperature is too high, the temperature switch will cut off the compressor electromagnetic clutch circuit. An evaporator installed in the center of the evaporator temperature sensor or temperature switch by controlling the operation of the air conditioning compressor to control the temperature of the evaporator. Evaporator temperature control is intended to prevent the evaporator frost. If the evaporator temperature is below 0 ℃, condensation surface of the water in the evaporator will frost or ice, in severe congestion evaporator air passage, resulting in significantly reduced cooling effect of the cooling system. In order to avoid frost evaporator, the evaporator temperature must be controlled at above 0 ℃. Evaporator temperature is too low, lower than the set value below 0 ℃, the air conditioning compressor electromagnetic clutch amplifier will cut off the circuit. Evaporator outlet Engine Temperature Sensors failure, can cause frequent air conditioning compressor clutch pull and separation. Between the expansion valve to the evaporator frost line will result in a small amount of air out of the wind