Car air conditioning open cold air out is hot air how to return a responsibility?

The weather is hot, more and more vehicles into the factory to repair air conditioning. Some owners complain, open the air conditioning refrigeration, found that the wind not only no cool feeling, and even will blow a warm wind. So, car air conditioning open cold air out is hot air how to return a responsibility? Let's take a look at it.
In the case of hot air when the car air conditioner turns on, how should we check it?

Let's Analyze The Reasons Why The Car Air Conditioner Turns On The Cold Air And Comes Out As Hot Air:

1. The Refrigerant Is Missing

The principle of air conditioning refrigeration is that the refrigerant evaporates and absorbs the heat in the air, and then makes the blower output cold air. Therefore, if the refrigerant in the air conditioning system is insufficient, the refrigeration effect will be very poor. When the air conditioning refrigeration is poor, the refrigerant pressure should be checked first. If the index of high pressure and low pressure is lower than the standard, it is likely that the refrigerant is missing.

When filling refrigerant, fluorescent leak detection agent can be properly injected to quickly find the leak point when the air conditioning system leaks. Common leakage positions include: air conditioner compressor, condenser, evaporator and other components and air conditioner pipe connection parts, and air conditioner pipe interface; The condenser, evaporator and the pipe itself is damaged by trachoma or external force.

2. The Air Conditioner Compressor Fails

The function of the air conditioner compressor is to pressurize the refrigerant, which is further liquefied after cooling by the condenser and finally transported to the evaporation box for gasification and heat absorption. If the compressor function fails, it will result in low degree of refrigerant liquefaction, unable to fully gasification in the evaporation chamber, and difficult to provide effective heat absorption.

Common Compressor Faults Include:

Compressor internal rotor due to insufficient lubrication or high temperature stuck; The regulating solenoid valve of the variable displacement compressor is faulty, and the compressor is always at the minimum refrigerant output. The electromagnetic clutch of the constant displacement compressor is disconnected, and the compressor rotor has not been connected with the power. The refrigerant pressure sensor is faulty, and the high pressure signal is incorrectly output, resulting in the compressor can only output at the minimum displacement or the electromagnetic clutch is not sucked.

3. Poor Liquefaction Effect Of Refrigerant

The refrigerant needs to be changed by liquefaction and gasification to play the role of heat absorption. Therefore, if the refrigerant state change effect is not good, it will reduce the refrigeration performance of air conditioning, resulting in no cool air flow output from the air outlet.

If the air conditioning condenser is covered with dust and wool, the liquefaction effect of the refrigerant will become worse. Low degree of liquefaction refrigerant, almost no gasification heat absorption capacity. After a windy autumn and winter and more wool in spring, the condenser is usually covered with thick dust. Before the summer, it is recommended to clean the condenser.

In addition, the abnormal operation of electronic cooling fan due to power supply failure, control disorder or structural damage will also affect the effect of air conditioning. To fully understand the root cause of hot air blowing when air conditioning refrigeration can better help us to carry out maintenance and maintenance of air conditioning system.