What's wrong with the freezer not cooling

What's wrong with the freezer not cooling 　The freezer has been used for a long time, and various failure problems may occur, such as not cooling. What happened to the freezer? 1. Test the power cord with an electric pen. The broken power cord of the freezer is also a cause of non-refrigeration. For this situation, we need to check whether it is a power problem. The general approach is to open the door and observe whether the lighting lamp in the box Light up. Look for signs of damage to the wires, such as being bitten by a mouse. 　　 2. The lack of refrigerant causes the freezer to not refrigerate: most of the double-door refrigerator capillary outlet is advanced to the freezer to start circulation, that is to say, to start cooling in the freezer. At the end of the refrigerating compartment, if the refrigerant is lacking, it is firstly reflected that the refrigerating compartment is not cooled. If the refrigerant is further insufficient, the freezing compartment evaporator cannot be completely frosted. When the outlet of the trachea is blocked, it will cause the problem of no cooling. 　　3. The frost in the evaporator causes the freezer to not cool: when the frost in the evaporator cannot be removed, the air duct is blocked. The main reason is that the air-cooled refrigerator usually has only one evaporator, and the cooling capacity cannot go out, resulting in the refrigerator not cooling. At this time, the defrost system needs to be checked, it may be that the defrost timer is faulty, or the heating tube has been burned out.