1. When the refrigerator is not cooling, we should first check the power connection is normal, check the refrigerator light is not normal, you can also use the electric pen to be tested.
2. If the power connection is normal, you can monitor whether the lower compressor is working properly. Compressor in normal operation will issue a small motor vibration sound. When the compressor high-pressure output buffer tube rupture, or fixed the tube loosening of the screw, resulting in high-pressure pipe does not exhaust, low-pressure pipe does not inhale, so the compressor is running, but not cooling.
Solution: open the case, replace the new buffer tube, or tighten the screws.
3. If the compressor to normal operation, then the next can check whether the refrigeration system refrigerant exhausted specific judgments: You can let the refrigerator run for 3-5 minutes, cut off the power, listen to see if there is water sound. If there is no sound. It means that the refrigeration system refrigerant has run out of or leakage. It is also possible that the compressor is out of work.