What is the reason why the clutch of automobile air conditioning compressor is not engaged?

There is something wrong with the clutch of Pacific Auto Network 1 and compressor; 2. There is something wrong with the compressor control circuit; 3. The temperature sensor of the automobile air conditioning system is broken; 4, compressor refrigerant is too little or no refrigerant, etc. The clutch engagement of air conditioning compressor needs to meet the following conditions: throttle opening

If the measured high pressure value is slightly lower and the low pressure value is low or too low, there are two possibilities: First, the refrigerant in the system is insufficient and should be replenished to an appropriate amount. Second, the high-pressure pipeline is blocked due to external force deformation or blocked by the liquid storage dryer, and the temperature of the handle at the inlet and outlet of the liquid storage dryer is different. The inlet temperature is hot and the outlet temperature is hot. If the dryer is blocked, the temperature difference between them will increase, and the more serious the blockage, the greater the temperature difference. The treatment method is to replace the squeezed high-pressure pipeline or the blocked liquid storage dryer, and clean the condenser if necessary.

Generally, the master in the repair shop will judge whether the line is normal by jumping the pins of the compressor, disconnect the power supply of the compressor relay, and jump the pins of the compressor to make the compressor suck air.

If the internal wear of the compressor is serious, it will not work normally. The main work of compressor in air conditioning system is to compress and convey cold air, which leads to the compressor rotating at high speed for a long time, so this is one of the reasons why the compressor can not work normally.

The air temperature sensor or the temperature control sensor of the air conditioning system is broken, so that the temperature can not be sensed, the electric signal can not be transmitted, and the compressor can not make the suction action. At this time, only the temperature control sensor needs to be replaced.

Factors such as the pressure switch of the automobile air conditioner tripping may cause the compressor of the automobile air conditioner not to suck. If a similar fault occurs, it is recommended to go to a professional repair shop for inspection as soon as possible, which may cause damage to the whole compressor for a long time.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)