The freezer has greatly facilitated people's lives. At present, freezers have entered thousands of households and become essential household appliances. Not only does the family need freezers, but the catering industry also needs large freezers. The function of freezer is to keep food fresh in cold storage, thus extending the shelf life of food. But the freezer doesn't cool. Why?

1. Improper adjustment of the expansion valve and outlet valve of the freezer, too much refrigerant in the system, or air in the refrigeration system, wear of the piston of the compressor cylinder liner, etc. will cause the freezer to fail to refrigerate. It is necessary to contact professionals to check the location of specific faults, then carry out maintenance and replace new parts if necessary.

2. The high-pressure output pipe in the refrigerator compressor is broken, or the screw fixing this pipe is loose, which is called the phenomenon that the high-pressure pipe does not exhaust. Although we could feel the compressor running, it didn't cool down.

3. Refrigerator refrigeration needs refrigerant. If the refrigerant in the system leaks, even if the compressor is running, there is no refrigerant evaporation in the system to absorb heat, and the temperature of the freezer will not go down. In this case, you only need to contact a professional to add an appropriate amount of refrigerant.

4. The components of the freezer are not welded firmly or improperly operated during normal use, resulting in refrigerant leakage. In this case, even if refrigerant is added, it will still lead to insufficient refrigerant. It is suggested to deal with the refrigerant leakage point first, and then add Freon after repair.

5. In addition, the capillary in the freezer is blocked, which makes the refrigerant unable to enter the evaporator and absorb heat by evaporation, so the freezer naturally cannot be cooled. This problem can be solved by dredging capillaries.

The temperature adjustment of the freezer should also be appropriate, and the gear should be changed according to the seasonal changes of the weather. Different shift positions will affect the temperature and power consumption of the refrigerator.

The freezer also needs to be cleaned frequently. If there is dust on the compressor or condenser, it will seriously affect the heat dissipation of the freezer and shorten the service life of the parts. The biggest impact is that the freezer can't be used normally. If you want to clean regularly, replace the damaged parts in time.