The refrigerator is not cooling

Speaking of home appliances such as refrigerators, we have to say that refrigerators are one of the most important home appliances in our daily life. The main function of a refrigerator is to maximize cooling and keep food fresh, but many friends will find that the phenomenon of refrigerators not cooling is very common, and they often encounter the phenomenon of refrigerators not cooling. So what should we do if the refrigerator does not cool? How should we solve these problems?

In fact, there are many reasons why the refrigerator does not refrigerate. It may be related to the power supply, or it may be because too many items are placed in the refrigerator, or there is a problem with the compressor, etc., all of which are closely related. So what should you do if your refrigerator doesn't cool?

The refrigerator is not cooling

The refrigerator is one of the commonly used electrical appliances in our daily life. Refrigeration is one of the main core functions of a refrigerator. After using it for a period of time, you will find that the refrigeration effect of the refrigerator becomes worse, or even stops cooling.

Troubleshooting for reasons why the refrigerator does not cool:

1. When the refrigerator does not refrigerate, we should first check whether the power connection is normal and whether the light in the refrigerator is normal. We can also further test it with a test pen.

2. If the power connection is normal, you can monitor whether the compressor is working normally. The compressor will make a slight motor vibration sound when it is working normally. When the high-pressure output buffer tube in the compressor breaks, or the screws fixing the tube loosen, the high-pressure tube will not exhaust air and the low-pressure tube will not inhale air, so the compressor will run but will not cool.

Solution: Open the casing, replace the buffer tube with a new one, or tighten the screws.

3. If the compressor can operate normally, then you can check whether the refrigerant in the refrigeration system is used up. The specific judgment method is: you can let the refrigerator run for 3-5 minutes, cut off the power supply, and listen to see if there is any sound of water flow. If there is no sound. This means that the refrigerant in the refrigeration system has been used up or leaked. It is also possible that the compressor has lost its ability to work.

Solution: If a system leak occurs, find the leak, perform welding repairs, pressure tests, and evacuate the system to ensure that it passes the test. Then, add a certain amount of refrigerant, usually when the evaporator is fully frosted or the rated temperature is reached in the refrigerator.

4. Blockage of the refrigerator capillary can also cause the refrigerator to fail to refrigerate. When the capillary tube in the refrigerator is blocked, the refrigerant cannot enter the evaporator to absorb heat and work, causing the temperature of the refrigerator to remain high. Different types of refrigerators have different cooling properties. If the refrigerator is of the indirect cooling type and fails to make ice, you can check whether the refrigerator fan is operating normally: open the refrigerator door, press the button on the edge of the box opening (this button controls the indoor lighting and stops the fan when the door is opened), and check whether the fan is working. If the fan does not work, the refrigerator will not refrigerate.

Solution: The capillary or dryer is blocked, and the outlet is hot. Therefore, it is necessary to dismantle it and clean it! In addition, household refrigerators are generally divided into two types: direct cooling and indirect cooling. Direct cooling means that the evaporator (cooling pipe) directly exchanges heat with the freezing and refrigerating chambers to achieve the cooling purpose; indirect cooling means that the evaporator (cooling pipe) is separated from the freezing and refrigerating chambers, and a fan blows cold air into the freezing and refrigerating chambers to achieve the cooling purpose.

Solutions to poor refrigerator refrigeration effect

Poor refrigeration performance of a refrigerator is not always due to a malfunction of the refrigerator. Sometimes it may be due to too many things piled up in the refrigerator, causing the refrigerator to fail to cool. Rule out this situation. There are two reasons for poor cooling effect:

1. If the refrigerator has poor cooling effect in winter, you should consider turning on the low temperature compensation switch. Because when the ambient temperature is lower than 16 degrees, the refrigerator's refrigeration effect will be poor.

2. When the frost in the ice is thicker, it will also cause poor refrigeration effect of the refrigerator. At this time, you need to consider the defrosting problem: For manually defrosted refrigerators, check whether the refrigerator has not been defrosted for a long time, causing the frost layer to be too thick, resulting in the inability to exchange hot and cold, affecting the refrigeration of the refrigerator. For automatic defrosting refrigerators, open the evaporator cover and check whether the evaporator has a thick frost layer. If not, analyze it according to the refrigerator non-refrigeration process. If there is very thick frost, check whether the resistance of the defrost heating wire is normal, generally around 500 ohms. A circuit breaker indicates that the heating wire is damaged. Check the temperature limiter. If it is disconnected, it means the temperature limiter is damaged. Check whether the defrost sensor is normal. The temperature limiter is fixed on the fin evaporator and has a transparent plastic cover on the outside. The temperature limiter is a non-recoverable component and must be replaced if it is damaged after being disconnected.

Note: If the temperature limiter is found to be damaged, you cannot just replace the temperature limiter. You must check whether there are any problems with other related components to determine whether the main control board is faulty and causing continuous heating. Check whether the evaporator fan resistance is normal. An open circuit or short circuit indicates that the fan is damaged. For refrigerators with fans, damage to the fans can also cause frost in the refrigerator, affecting the refrigeration effect. An open circuit or short circuit indicates that the fan is damaged.

Regarding the problem of refrigerator not cooling, it can actually be solved through certain methods. In addition to cleaning the debris in the refrigerator regularly and checking whether the frost layer of the refrigerator is too thick, you also need to regularly check the resistance of the refrigerator, whether the compressor is operating normally, etc. In addition, if you find that the refrigerator cannot cool for a long time, you should ask a professional technician to repair it in time.