The appearance of extraneous sounds in the operation of household appliances always causes concern for the owner. This is especially true refrigeratorsthat work non-stop. If your Atlant started making unusual sounds, it is important not to panic, but to analyze the nature of the noise. This can be a quiet hum, a sharp knock, a whistle or gurgling.
In most cases, an increased noise level does not indicate a critical breakdown. Often the problem lies in improper installation, vibration of contacting parts, or natural processes of refrigerant circulation. However, loud hum is also not worth ignoring, as it may indicate wear on the compressor.
This article will help you independently diagnose the source of the sound. We will look at the main mechanical and physical causes of noise. You will learn to distinguish normal operation of the unit from signs of a serious malfunction that requires the intervention of a technician.
Vibration of the case and incorrect installation
The most common reason why the refrigerator Atlant makes loud sounds is vibration of the case. During operation, the compressor creates vibrations that are transmitted to the walls and legs. If the equipment is not level or touches furniture, resonance occurs. As a result, a quiet hum turns into an obsessive rattling sound.
Check whether the unit is stable. The legs should fit snugly to the floor. It often happens that one of the supports is twisted too much or, conversely, not raised enough. This leads to misalignment, which can cause doors to not close tightly and the body to vibrate. To adjust, use a key or turn the legs manually, achieving the ideal horizontal position.
⚠️ Attention: Make sure that there is a gap of at least 5-7 cm between the back wall of the refrigerator and the wall of the room. The lack of space for ventilation causes overheating and increased engine noise.
It is also worth checking whether the case is in contact with nearby furniture or kitchen equipment technology. Even minimal contact with vibration produces a loud knock. Move the device away from walls and other objects. Sometimes the source of sound is objects lying on the top cover of the refrigerator.
To eliminate vibration, you can use special anti-vibration pads under the feet. They dampen vibrations and prevent slipping. If, after leveling and moving the equipment, the noise does not disappear, then the problem lies deeper.
Wear and operating features of the compressor
The heart of any refrigerator is compressor. It is this unit that is responsible for circulating the refrigerant through the system. New models Atlant equipped with modern engines that operate quite quietly. However, over time, parts wear out and noise levels increase. This is a natural process of equipment aging.
If you hear a loud, increasing hum that does not stop even after the chambers have cooled, this may indicate wear of the bearings or piston group. In older models, a situation often occurs when the motor mounts become loose. Rubber shock absorbers dry out and lose elasticity, ceasing to dampen vibrations of a running engine.
In some cases, the compressor may hum louder than usual due to power surges in the network. Unstable power causes the motor to work under increased load. To protect expensive equipment, it is recommended to use surge protectors or voltage stabilizers.
- 🔧 Check the compressor fastening: if the bolts are loose, they need to be carefully tightened.
- 🔧 Inspect the rubber gaskets under the motor: if they are cracked, they need to be replaced.
- 🔧 Listen to the nature of the sound: a metallic clang indicates mechanical damage to the internal parts.
It is worth noting that some models Atlant with two compressors can operate in different modes. Sometimes only one motor will turn on, and sometimes both will turn on at the same time, creating a higher noise level. This is a normal situation described in the instructions.
How long should the compressor operate?
Normally, the compressor operates cyclically. The operating time depends on the load of the chambers, the room temperature and the set mode. Typically the cycle is 15-20 minutes of work and 10-15 minutes of rest. If the motor hums continuously for hours, this is a sign of a malfunction of the thermostat or a freon leak.
Noise of refrigerant circulation and defrosting
Often users are frightened by the sounds that it makes refrigerantpassing through the system pipes. Gurgling, fluid pouring, quiet hissing or whistling are normal physical processes. Freon changes from liquid to gaseous state and back, which is inevitably accompanied by sound effects.
These sounds are especially pronounced immediately after turning on the refrigerator or after the automatic defrosting cycle. In systems No Frost the sound of running water can be heard due to condensate drainage. If the noise is not accompanied by a loss of cooling capacity, there is nothing to worry about.
| Sound type | Probable cause | Normal or breakdown |
|---|---|---|
| Gurgling, overflow | Movement of freon through tubes | Normal |
| Crackling of plastic | Thermal expansion of walls | Normal |
| Fan humming | System operation No Frost | Normal (if it does not howl) |
| Sharp whistle | Gas leak or blockage | Requires repair |
Crackling sound, reminiscent of the sound of a bursting bubble or crackling noise, often made by plastic elements of the inner chamber. As temperatures change, materials expand and contract. This is especially noticeable in new refrigerators Atlant or after long-term defrosting.
However, if the gurgling is added to the lack of cold in the chambers, this may indicate clogged capillary tube or a freon leak. In this case, the compressor may work without stopping, trying to compensate for the lack of refrigerant, which creates a constant background noise.
Problems with the fan in the No Frost system
In refrigerators Atlantequipped with the system No Frost, it is responsible for air circulation fan Over time, its bearings can wear out and ice can build up on the blades. This leads to a howling, humming or knocking sound coming from the freezer.
If the fan touches frozen ice with its blades, you will hear a characteristic crackling or knocking sound. This usually happens when the defrost system is faulty or the door is not closed tightly. Warm air gets inside, moisture crystallizes tightly, interfering with the rotation of the impeller.
⚠️ Attention: Do not try to remove ice from the fan with sharp objects. You can damage the blades or puncture the evaporator, which will lead to an immediate leak of freon and expensive repairs.
For diagnostics, you need to defrost the refrigerator. Unplug the device for 10-12 hours, leaving the doors open. If after complete defrosting and turning on the noise disappeared, but returned a week later, then the problem is in the defrosting system (heating element, timer or sensor).
In some cases, the fan may hum due to dried grease in the bearings. Then it will need to be replaced or lubricated (if the design allows). Replacing a fan is a simple procedure, but requires care when connecting the wires.
☑️ Diagnosis of fan noise
Creaks, knocks and foreign objects
Sometimes the source of noise turns out to be trivially simple. Vibration can be transmitted to dishes on shelves or to bottles in the door. Glass bottles touching each other make a ringing sound. Plastic containers may rattle on shelves. Before looking for a breakdown, check the contents of the chambers.
Door hinges often make squeaking sounds. If the hinge mechanism is rusty or the lubricant has dried out, you will hear an unpleasant squeaking sound when opening and closing. This can be solved by lubricating the hinges with special oil or silicone grease.
Knocking can occur if the refrigerator is close to the wall and when the compressor is running, it “walks” back and forth, touching the wall. Also check to see if small objects (coins, buttons) have fallen behind the refrigerator or into the rear ventilation grilles. When they get into the vibration zone, they begin to rattle.
- 🥤 Move bottles and cans away from each other so that they do not knock.
- 🥤 Check the shelves: they should fit tightly in the grooves and not wobble.
- 🥤 Inspect the back of the unit for the presence of foreign objects.
If you find that the compressor itself is knocking against the metal tubes at the back, under no circumstances try to straighten them by force. The tubes are made of copper and are very fragile. One wrong move can lead to their fracture. It is better to use soft material (foam rubber, foam plastic) to isolate the point of contact.
When you need to call a specialist
Despite the possibility of self-diagnosis, there are situations when you cannot do without a professional. If you have ruled out all household causes (vibration, dishes, installation), and Atlant refrigerator continues to make noise, a serious breakdown may have occurred.
An alarming signal is a metallic clang, knocks inside the compressor or a piercing whistle. These sounds indicate that the engine is running dry or the internal valves have broken. Operating such a device is dangerous: the compressor may burn out, and repairs will be more expensive.
⚠️ Attention: If you hear a burning smell or see sparking in the compressor area, immediately unplug the refrigerator and call a specialist. Further activation can lead to a fire.
Also, the help of a technician is needed if the noise is accompanied by a lack of cold, the appearance of a “coat” of ice in one of the compartments, or constant cyclic turning on and off of the motor. These are signs of a freon leak or failure of the control electronics.
Remember that timely contacting a service center can often save the compressor. Attempts to independently repair complex equipment without the appropriate skills and tools can lead to final breakdown of the unit.
Is it normal that a new Atlant refrigerator is loud?
In the first days of operation, a new refrigerator may hum a little louder than usual. The compressor and system parts are grinding in. However, the noise level should not exceed 40 dB stated in the passport (usually this is the level of a quiet conversation). If the hum interferes with sleep, check the installation.
Why does the refrigerator hum only at night?
During the day, extraneous noise is masked by the household background. At night in silence the humming becomes more noticeable. In addition, at night the voltage in the network may stabilize or, conversely, jump, which affects the operation of the motor. Also at night, the fast freezing mode is turned on more often, forcing the compressor to work harder.
Can the noise level depend on the temperature in the room?
Yes, it can. In a hot room, the refrigerator has to work longer and harder to maintain the set temperature. The compressor turns on more often and runs longer, which means the noise level in the room increases. In a cool room, appliances are quieter.
What to do if an old refrigerator is humming?
Old models Atlant make more noise than new ones due to the design of the motor and wear of the rubber shock absorbers. Try replacing the anti-vibration pads under the compressor and feet. If this does not help, put up with the noise or replace the equipment with a more modern and quiet model.