Konka refrigerator does not refrigerate. What happened?

It may be that the refrigerator has been used for too long, the compressor is damaged or faulty, and the compressor needs to be repaired; The refrigerator has poor power contact or there is no electricity at home. Reconnect. Or if the refrigerator is used for a long time and the refrigerant is used up, add refrigerant; The refrigerator system leaks, so it is suggested to fill the leak and add fluoride as soon as possible. (1) Cause analysis 1. The high-pressure output buffer tube in the compressor is broken, or the screw of the fixed tube is loose, resulting in that the high-pressure tube does not exhaust and the low-pressure tube does not inhale. Therefore, although the compressor is running, it does not refrigerate. 2. The refrigeration system leaks and all the refrigerants are lost. Although the compressor is running, there is no refrigerant evaporation and heat absorption in the system, so the temperature in the refrigerator has not dropped. 3. The capillary tube is blocked, so the refrigerant can't enter the evaporator to evaporate and absorb heat, and the temperature in the refrigerator doesn't drop. (2) Exclusion method 1. Cut the casing, replace the buffer tube, or tighten the screw. 2. First, find out the leaking part of the system. After welding repair, pressure test and evacuation are qualified, add refrigerant to a certain amount, which generally depends on the frosting of evaporator or the rated temperature in refrigerator. 3. The capillary or dryer is blocked and the outlet is very hot. So get rid of it, get rid of it! In addition, household refrigerators generally have direct cooling type and indirect cooling type. Direct cooling means that the evaporator (cooling tube) directly exchanges heat with the freezing chamber and the refrigerating chamber to achieve the purpose of refrigeration; Intermittent refrigeration means that the evaporator (cooling tube) is separated from the freezing chamber and the refrigerating chamber, and cold air is blown into the freezing chamber and the refrigerating chamber by a fan to achieve the purpose of refrigeration. Your refrigerator should be judged from the following aspects: 1. Check whether the power connection is normal. Open the door of the box and observe whether the lighting in the box is on, or test it with an electric pen. 2: If the power connection is normal, listen to whether the compressor works. When the compressor works normally, it will make a slight vibration motor sound (if you feel the vibration of the compressor with your hands, be careful not to burn it, because the temperature of the compressor is 40-50℃ in winter and 80-90℃ in summer). 3. If the compressor can work, judge whether there is refrigerant (commonly known as medicine) in the refrigeration system. Let the refrigerator run for a few minutes, and then unplug it. Listen carefully to the sound of liquid flowing in the copper tube. Otherwise, the refrigerant in the system has leaked or the compressor has lost its working ability. 4: If your refrigerator is of indirect cooling type, check whether the fan works. Open the door of the freezer, press and hold the button on the edge of the door (this button controls the indoor lighting and stops the fan when opening the door), and check whether the fan works. If the fan doesn't work, the refrigerator won't cool.