Refrigerator is the main appliance that should be in every home. Without it, people would hardly be able to indulge in a variety of foods, and the storage of perishable foods would generally be impossible. It is for this reason that the demand for this type of technology never decreases. The range of units is great. On sale there are both budget models and more expensive ones. The difference between them lies in the feature set and quality. However, owners of refrigerators often have to deal with some problems caused by incorrect operation. Moreover, such failures occur with all devices, without exception, regardless of brand and model. They continue to function, withstand the optimum temperature, but when turned on, they begin to make a lot of noise. What is the essence of such a problem? Is it possible to cope with it on your own or will you have to seek help from specialists? Let's try to figure out why the refrigerator hums loudly.
Features of modern technology
Manufacturers of refrigeration equipment, presenting their products, often call it silent. However, this is not entirely true. Any device that is equipped with an electric motor and a compressor will make a certain sound when turned on. The noise level can vary from 10 to 40 dB. Naturally, the lower this parameter, the quieter the refrigerator will work. The maximum value (40 dB) is comparable to a loud conversation.
When the reproduced noise can be considered normal, it is better to find out from a specialist. But if the refrigerator worked quietly for a long time, and then a hum suddenly appeared, then this clearly indicates some kind of problem.
Why is the new refrigerator buzzing?
Before buying a new refrigerator, it is advisable to read the manufacturer's recommendations. Some models equipped with the No Frost system are very noisy during the week. The reason for this is not a breakdown, but simply a violation of the connection rules. After transportation and installation at a new location, it is recommended that such units be allowed to stand. What does this mean? Before turning on the appliance, the refrigerator should simply stand still for approximately 5-8 hours.
There are also models in which the process of freezing ice is accompanied by a strong hum. This only happens when you first turn it on, but it can also happen after a complete defrost. For others, this problem may be accompanied by a period of adjustment to a new position.
For example, why is the LG refrigerator that was just purchased buzzing? Most often, owners immediately after installation choose the incorrect freezing mode (maximum value). Naturally, a new device, working at maximum, can make a loud sound. Transport bolts or improper placement can also provoke a hum.
Installation rules violated
The most common reason why the refrigerator starts to hum is incorrect installation. No matter how strange it may sound, it is precisely the violation of the recommendations in this matter that can even lead to problems in work. Having installed the device in a new place, it is necessary to check the correct vertical and horizontal position. If there is even a slight distortion, then it is displayed on the operation of the compressor - an unpleasant noise occurs. It is also important to check that the refrigerator is stable on all four legs. If there is not enough support, vibration and a loud hum will appear. Most manufacturers use adjustable feet, with which the device is easy to level. If there is no special building device, then you can make a plumb line yourself. To do this, you need a dense thread and weight. The latter is tied at one end, and the second is held in hands. In this way, it is easy to check the correct vertical position.
Lack of air
Why did the refrigerator start buzzing after a change of furniture or rearrangement? In the instructionsthe manufacturer does not recommend attaching the device tightly to the wall or other objects. A certain distance must be maintained. If you violate this recommendation, then due to lack of air, the compressor starts to work at maximum and, as a result, a characteristic buzz appears. This problem can occur with both new equipment and old ones. Let's highlight three main reasons:
- The refrigerator is close to the wall.
- He is heavily furnished.
- The radiator is in contact with the wall surface.
So, why is the refrigerator buzzing so much? The condenser needs a constant supply of air during operation. If it starts to be missed, then the cooling process is disrupted, which leads to loud operation of the unit. Excessive load provokes not only the appearance of an uncharacteristic hum, but also other sounds - knocking, vibration, clicks.
Fan problems
Why is the refrigerator buzzing, although it used to work quite quietly? A similar problem may occur in appliances with a No Frost system. There is a loud sound due to a fan failure. When turned on, there is a hum, crackling, rattling. This is most strongly felt in those models in which two fans are installed. Each of them is separately responsible for cooling the freezer and refrigerator compartments.
What are the causes of such a malfunction?
They are:
- Sudden temperature fluctuations.
- Breakage of heating element.
- The evaporator is covered with a thick layer of ice.
- Grease dried on motor bearings.
This problem is quite serious. However, before contacting specialists, it is necessary to defrost the refrigerator. If this does not help, then you will have to return the device to a service center. Diagnostics will be carried out there, and according to its results, the necessary repairs will be carried out.
Power failure
One of the serious reasons why the refrigerator began to buzz could be a malfunction of the electrical network. Most often, the start-up relay fails. At first, the device will buzz strongly, and then it will stop turning on altogether. The only way to fix the problem is to change the part, but this should be done by a qualified technician.
Problems with the winding of the fan motor can also lead to a strong hum. If the contacts are burnt, then turning on the refrigerator will be accompanied by a very loud sound.
Also, one of the problems can be a short circuit in the network. This can be checked only with the help of a special device - a tester. If the failure is confirmed, then you will have to change the engine.
Transport bolts and compressor mountings
Why does the refrigerator buzz after transportation? The manufacturers of this equipment have tried to protect the devices from damage as much as possible, using special clamps for the compressor springs. They are called transit bolts. If they are not removed, then even a new unitit will rumble very loudly. Naturally, this is not a breakdown, so there is no need to contact specialists to solve the problem. You can get rid of the unpleasant loud sound simply by unscrewing these bolts.
But why does the refrigerator buzz if all the latches are removed? Then it is recommended to check the compressor mountings. Sometimes during operation, they weaken, which leads to a characteristic noise. This malfunction is simple, so each man will be able to cope with it on his own. It is enough to take the key and tighten the nuts.
Summarize
This article answered a fairly common question: “Why is the refrigerator buzzing?” There are many reasons for this problem, of course. Some of them are easy to fix on your own. We are talking about the correct installation, the loosening of the compressor fasteners, the formation of a thick layer of ice on the evaporator. However, a loud sound can also indicate serious damage. To solve these problems, it is better to turn to professionals. They will not only diagnose, but also quickly replace certain parts, if necessary. Service center employees provide the following services:
- Cleaning the filter.
- Replacing the start relay.
- Repair of burnt parts.
- Replacing the heating element.
