Situation when suddenly it starts to buzz loudly refrigerator Atlant, is familiar to many owners of this popular Belarusian equipment. Two-chamber models, despite their reliability and time-tested design, over time can produce extraneous sounds that disturb the silence in the apartment. The noise can be different: from a monotonous low-frequency hum to a sharp crackling or intermittent buzzing.
The first thing to do is not to panic and listen carefully to the nature of the sound. Often the reason lies not in a breakdown, but in improper installation or banal vibration of the case against the furniture. However, the problem cannot be ignored, since constant hum it may indicate wear on the compressor components or problems with the defrosting system.
In this article we will analyze in detail all the possible causes of noise that are specific to equipment Atlantand offer a step-by-step action plan. You will learn to distinguish operating sounds from malfunction signals and understand when you can handle it on your own and when you need to call a technician.
Normal operating noise versus malfunction
Any refrigerator, including two-chamber models Atlantmakes sounds during operation. The main source of noise is the compressor, which pumps refrigerant through the system. When the engine starts or stops, you can hear a characteristic hum or gurgle, which is an absolutely normal physical process.
However, you should be wary if the nature of the sound has changed. If previously the equipment worked quietly, but now very hummingit makes a whistle or a metallic clang, this is a sign of a malfunction of the internal mechanisms. A normal operating hum is usually smooth and does not change in volume during the cycle.
Pay special attention to the duration of the motor operation. If the refrigerator hums almost continuously and does not turn off, this may indicate a freon leak or loss of compressor performance. In such cases, the unit works hard, trying to reach the set temperature.
⚠️ Attention: If the humming is accompanied by the smell of burning or melted insulation, immediately disconnect the device from the power supply. Operation of such a device can lead to a fire or complete failure of the electronics.
Installation problems and external factors
Before disassembling the equipment, it is necessary to exclude external factors. Very often, a two-chamber refrigerator Atlant hums due to improper location. If the housing is skewed, the compressor causes strong vibration during operation, which is transmitted to the floor and furniture, creating resonance.
Check the distance between the back of the device and the wall. For normal air circulation and effective heat removal from the condenser, it is necessary to leave a gap of at least 5-7 centimeters. If the refrigerator is pushed close, the motor may overheat and run louder than usual.
Also inspect the area around the unit. Vibration can be transmitted to nearby objects: shelves, tables or heating pipes. Even a slight touch of the refrigerator body to another object can amplify the sound several times, creating the illusion of a serious breakdown.
To fix the problem, try gently shaking the refrigerator. If it wobbles, the support legs need to be adjusted. In most models Atlant the front legs have threaded adjustment, which allows you to set the horizontal position even on an uneven floor.
Diagnostics of the compressor and start relay
If external factors are excluded, most likely the source of the noise is inside the unit. The heart of any refrigerator is the compressor. Two-chamber models Atlant often use reliable but noisy piston compressors. Over time, the bearings or crankshaft liners wear out in them, which leads to a metallic knock or a strong hum.
Another common reason is a malfunction of the starting relay. This element is responsible for starting the engine. If the relay is stuck or fails, the compressor may hum but not start, or may make a characteristic clicking noise before starting. In some cases, the relay may rattle during operation.
You can check the condition of the compressor visually and by ear. Place your hand on the motor housing (on the back wall). If the vibration is transmitted very strongly to the hands, and the body itself is hot, this is a bad sign. Overheating of the compressor often accompanied by a change in the sound of operation.
⚠️ Attention: Replacing the compressor yourself requires special equipment for vacuuming the system and charging with freon. This work cannot be done without skills and tools.
How to check the start relay?
Remove the back cover, disconnect the relay from the compressor and shake it. If a knock is heard inside (as if from a broken stone), it means that the ceramic element is destroyed and the relay requires replacement.
No Frost system noise and ventilation
In two-chamber refrigerators Atlant with the system No Frost or Frost Free the source of noise is often the fan. It circulates cold air between the chambers. Over time, ice can build up on the blades, which leads to imbalance and the appearance of a crackling or humming sound when rotating.
In addition, the fan motor bearing may dry out or become contaminated with dust. In this case, the fan begins to “growl” or creak. The sound usually comes from the top of the refrigerator compartment or from the freezer, depending on the location of the evaporator.
Sometimes the fan hits frozen ice. This happens if the defrost system is not working correctly or if the door was not closed properly and moist air got inside. Ice crust on the blades is a common cause of periodic loud noise.
Also check whether the food is pressed against the back wall inside the chamber. In models with No Frost there are air duct openings, and the air flow can cause vibration of the bags, creating additional noise.
Vibration of pipelines and fasteners
Behind the rear panel of the refrigerator there is a complex system of copper tubes. They vibrate when the compressor operates. If the tubes are too close to each other or touch the body, an unpleasant ringing or rattling noise occurs. In refrigerators Atlant this occurs quite often due to the design features.
The compressor mounting bolts may become loose over time. Check the tightness of the nuts on the motor shock absorbers. If they are loose, the compressor will hit the metal frame each time it is turned on, producing a loud bang.
Sometimes loose elements inside, for example, a plastic grill in the freezer or a shelf, can rattle. Make sure that all removable parts are installed tightly and have no play.
☑️ Vibration diagnostics
To eliminate the noise of the tubes, you need to carefully bend them, without damaging the metal, or place a piece of foam rubber or rubber between them. The main thing is to act extremely carefully so as not to break the tightness of the system.
Comparative table of faults
To make it easier for you to determine the cause, we have compiled a table of the main symptoms and probable causes for equipment Atlant. This will help narrow down your search before calling a technician.
| Sound type | Probable cause | Need for repair |
|---|---|---|
| Monotonous hum, floor vibration | Incorrect installation, touching furniture | No (adjustment of legs) |
| Metal knocking, clanging | Compressor wear, loose fastenings | Yes (motor replacement or repair) |
| Crackling, whistling, howling | Fan malfunction (No Frost) | Yes (fan replacement) |
| Clicks before starting | Start relay malfunction | Yes (replacement relay) |
| Gurgling, murmur | Refrigerant movement (Normal) | No |
As can be seen from the table, not every sound requires expensive intervention. However, if you hear a high-pitched whistle or knocking of metal on metal, you cannot delay diagnostics.
⚠️ Attention: The characteristics and location of components may vary depending on the specific series of the Atlant refrigerator (for example, the XM-4000 series, XM-6000). Always check the technical documentation of your model.
When you need to call a technician
There are a number of situations when self-repair is not only ineffective, but also dangerous. If, after defrosting and checking the installation, the refrigerator Atlant continues to hum, and you do not have the skills to work with electrical appliances, it is better to turn to professionals.
This is especially true in cases where opening the refrigeration circuit is required. Replacing a compressor, filter drier or searching for a freon leak requires a pressure gauge station, a vacuum pump and a refilling scale. Without this equipment, it is impossible to restore the unit's functionality.
A technician will also be needed if the humming is accompanied by a lack of cold. This is a sure sign that the compressor is running on empty due to a refrigerant leak or a clogged capillary system. In this case, do-it-yourself repair can lead to final breakdown.
Remember that a qualified specialist will be able to accurately determine the source of the noise and offer the most economical solution to the problem, be it lubrication of the fan or replacing an expensive unit.
Why did the old Atlant refrigerator begin to hum more strongly?
Over time, the compressor shock absorbers lose elasticity, and the tubes dry out. This leads to increased vibration. In addition, wear and tear on the mechanical parts of the motor is inevitable after 10-15 years of operation.
Is it possible to lubricate the compressor to make it hum quieter?
No, modern compressors are sealed and are not maintained. Lubricating external parts will not help if the wear is internal. An attempt to drill the housing for lubrication will lead to freon leakage and breakdown.
Does the amount of food in the refrigerator affect the noise?
Yes, a full refrigerator is quieter, since the food acts as heat accumulators and the motor turns on less often. An empty unit may “buzz” more often due to rapid on-off cycles.
What to do if it hums only at night?
At night, extraneous sounds are not heard, so a running refrigerator seems louder. If the sound is smooth, this is normal. If the sound has changed, check whether the refrigerator is close to the wall or furniture.