1. When this happens, it is possible that you accidentally adjusted the thermostat knob to the 0 position when cleaning the refrigerator. If the thermostat is at the 0 position, there will be no cooling. Condition. 2. It is possible that the refrigerator was not connected to the power supply after wiping. If the refrigerator is not powered on, it will not cool. 3. It is also possible that the thermostat was accidentally damaged when cleaning the refrigerator. If the thermostat malfunctions, the refrigerator will not cool. 4. It is also possible that the compressor of the refrigerator is faulty, and the high-pressure output buffer tube in the compressor is broken or the screws are loose. Suggested solutions: 1. First check whether the thermostat knob is adjusted to the 0 position. If it is at the 0 position, then you need to adjust the gear. Generally, adjust it to 2~3 in summer and 4~ in winter. 5. Just adjust it to the middle position in spring and autumn. 2. Check whether the power supply of the refrigerator is plugged in properly. If it is not plugged in, plug it in and the refrigerator can start cooling. 3. Determine whether the thermostat is faulty. If the thermostat is faulty, you need to replace it with a new one to solve the problem of the refrigerator not cooling. 4. After eliminating these problems, it is possible that the refrigerator compressor has failed. At this time, you need to contact professional maintenance personnel for repair.