The appearance of extraneous noise in the operation of household refrigeration equipment is always a signal that cannot be ignored. If your Atlant refrigerator started to make unusual sounds, hum, click or whistle, this may indicate either minor violations in the installation or serious technical malfunctions of the unit. Understanding the nature of sound is the first and most important step to successfully solving the problem without calling a specialist.
In this article we will examine in detail the main causes of acoustic discomfort in Belarusian-made refrigerators. You will learn how to distinguish a normal operating sound from an anomaly, which parts most often fail and whether you can correct the situation yourself using a basic set of tools. Atlant It is famous for its reliability, but this equipment also requires proper care and timely diagnosis.
Extraneous vibrations can occur suddenly or increase gradually. It is important not to panic, but to consistently analyze the nature of the sound. If the sound appears immediately after installing or moving the refrigerator, in 80% of cases the problem lies in incorrect adjustment of the legs or transportation bolts. However, if the noise occurs after long-term use, the reasons may be deeper.
Diagnostics of the type of noise and its sources
Before taking active steps, it is necessary to accurately determine the nature of the sound produced. Different faults “sound” differently, and an experienced technician can determine the breakdown by ear. Humming, whistling, gurgling, knocking or crackling - all these acoustic manifestations have their own mechanical or physical nature.
Pay attention to the periodicity of the noise. The compressor's operating cycle is usually accompanied by a steady hum, which either subsides or intensifies. If you hear sharp metallic blows, a piercing squeal or continuous rattling, this is a sure sign that cooling system it is not working properly. It is also important to listen to whether the sound is coming from the motor, from the inner chamber or from the back wall.
- 🔊 Humming: most often indicates a compressor operation or ventilation problems.
- 🔨 Knock: may indicate a faulty start relay or shocks tubes.
- 🌬️ Whistling or howling: usually associated with the operation of a fan or a clogged capillary tube.
- 💧 Gurgling: the normal sound of flowing refrigerant, but may be louder than normal.
Even quiet but intrusive sounds should not be ignored. Over time, they can develop into serious damage requiring expensive repairs. Correct diagnostics at an early stage will help preserve the resource of the unit.
Checking the correct installation and adjusting the legs
The most common, but common cause of vibrations and hum is incorrect installation refrigerator. If unit stands unevenly or touches the side walls of furniture, vibration from the operating compressor is transmitted to the body and resonates, creating noticeable noise. Floor vibration also plays an important role: if the coating is soft or uneven, stability is impaired.
The first thing to do is check the horizontal installation. To do this, you can use a building level or even a regular glass of water. The refrigerator should stand strictly vertically, with a slight tilt back, so that the doors close independently under the influence of gravity. Adjustment is carried out using screw supports located in the front lower part of the case.
☑️ Checking the installation
⚠️ Attention: Never leave the refrigerator in an unstable position. This not only creates noise, but can also lead to compressor breakdown due to improper oil circulation.
Also make sure that there is a distance of at least 10-15 centimeters between the back wall of the refrigerator and the wall of the room. This is necessary for free air circulation. If the gap is too small, the hot air from the condenser does not have time to cool, which causes the compressor to work harder and louder.
Elimination of vibration of the compressor and fastening elements
The compressor is the “heart” of the refrigerator and the main source of noise. In normal condition it produces a smooth hum, but over time the fastening elements may become loose. If compressor casing or the motor itself is poorly secured, rattling occurs, which is easily transmitted to the entire body. Vibration can also come from the tubes leading to the motor.
To fix the problem, you need to gain access to the lower rear of the refrigerator. Usually there is a black round tank located there - the compressor. Check the tightness of the bolts that secure it to the frame. If the bolts are tightened, but the vibration persists, the rubber shock absorbers on which the motor hangs may have worn out. In this case, replacing them is the only solution.
Often the source of sound is the copper tubes of the cooling system. They may touch each other or the compressor housing. When the motor operates, the tubes begin to vibrate and hit the metal, creating a loud clanging sound. Gently bend the tubes with your hand (only if they are cold!) so that they do not come into contact with anything.
How to check the compressor shock absorbers?
If when you lightly press the running compressor with your hand, the sound changes or disappears, then the problem is in the mount or shock absorbers. Do not use excessive force!
Do not forget that older models Atlant may have noisier compressors compared to modern inverter counterparts. If your refrigerator is more than 10 years old, some noise level may be the natural wear and tear of mechanical parts.
Problems with the No Frost system and fan
If your refrigerator Atlant is equipped with a system No Frost, then the fan often becomes the source of noise. It circulates cold air inside the chambers. Over time, ice can build up on the fan blades, or the fan motor bearings can wear out, causing a hum or crackling noise.
The characteristic sound of a faulty fan is an increasing howl or rhythmic hum that may appear and disappear. If the blades hit frozen ice, you will hear a cracking sound similar to glass or plastic breaking. In some cases, the fan may simply stop, and then the refrigerator will stop cooling, but will not make noise.
| Symptom | Possible cause | Solution |
|---|---|---|
| Rhythmic crackling | Ice on the blades | Defrost (24 hours) |
| Constant hum | Bearing wear | Fan replacement |
| Whistling when opening | Air flow | Norm for No Frost |
To diagnose the fan, partial disassembly of the rear wall of the freezer is often required. If you are not confident in your abilities, it is better to entrust this procedure to a specialist, as there is a risk of damaging the plastic elements or the defrosting system.
Why the relay clicks and the compressor knocks
One of the most alarming sounds is a loud click, followed by silence or an attempt to start, which again ends with a click. This is a classic symptom of a compressor malfunction. The relay is responsible for starting the engine, and if it fails, the engine cannot start, making characteristic clicking sounds. start relay compressor. The relay is responsible for starting the engine, and if it fails, the engine cannot start, making characteristic clicking sounds.
Also, knocking can occur inside the compressor itself if the piston group has worn out. In this case, a metallic clang is heard. Unfortunately, if the “internal” of the compressor is knocking, it is easier to replace the unit, since repairs are not economically feasible. However, before jumping to conclusions, check the voltage in the network - low voltage can also cause humming and clicking.
In models with two compressors (separate for the refrigerator and freezer), the sound may come from the second motor. Diagnostics is carried out by turning off the compressors one by one (if there is such a technical possibility) or analyzing the switching cycles.
⚠️ Attention: If after clicking the refrigerator does not turn on and emits a burning smell, immediately unplug the cord from the socket. Operation with a faulty relay can lead to burnout of the compressor winding.
Creaks, whistles and other extraneous sounds
Sometimes users encounter a high-frequency whistle or squeak. Creaking often occurs in door hinges. If the hinges are dry or dirt gets into them, opening and closing the door is accompanied by an unpleasant sound. Lubricating the hinges with a special lubricant or regular machine oil (in small quantities) usually solves the problem.
Whistling may be a sign of freon leaking through a micro-hole in the system. If gas escapes under pressure, a whistling sound occurs. This is a dangerous situation that requires an immediate call to a technician to find the leak and recharge the system. The throttle valve in the system may also whistle No Frost when adjusting air flows.
Plastic cracking is another type of noise that you may encounter. When the temperature changes (for example, after defrosting or turning on), the plastic walls of the chamber may contract or expand, producing a cracking sound. This physical phenomenon is not a breakdown and does not require intervention.
When you need to call a repairman
Despite the desire to save money, there are situations when Self-repair is impossible or dangerous. If you have checked all external factors, made sure that the installation was correct, but refrigerator continues to make strange sounds, and the cooling efficiency drops - it’s time to call the professionals.
This is especially true for problems with the refrigerant and electrical part. Replacing a compressor, searching for a freon leak, repairing an electronic control module are complex operations that require special equipment (vacuum pump, pressure gauges, leak detector) and qualifications.
It is also worth contacting the service if:
- 🛠️ The compressor hums, but does not start, and gets very hot.
- ❄️ It doesn’t cool in the chamber, although the motor works constantly.
- 🔥 You can smell burnt wiring or plastic.
- 💧 Puddles of water have appeared under the refrigerator or inside the chambers.
Call a technician in a timely manner can save your refrigerator from being completely replaced. Ignoring serious symptoms often leads to the fact that a simple repair turns into a complex and expensive restoration procedure.
Noise prevention and service life extension
To ensure that your Atlant pleases with silence for as long as possible, it is important to follow the operating rules. Regular defrosting (for drip systems) prevents the build-up of ice, which can block the fan or create unnecessary load on the compressor. Cleaning the condenser (grid at the back) from dust also improves heat transfer and reduces operating noise.
Do not put hot food in the refrigerator - this forces the motor to work at its limit, increasing the noise level. Make sure that the food inside does not touch the back wall, as this can cause vibration of the shelves and containers.
How often do you need to defrost the Atlant refrigerator?
Models with manual defrosting require turning off once every 3-6 months, depending on air humidity. No Frost and drip defrosting systems do not require manual intervention, but preventive defrosting once a year is good for hygiene.
Is it possible to lubricate the compressor with oil?
It is absolutely not possible. The compressor is a sealed unit. Any attempt to drill it or open it for lubrication will result in moisture and air entering, which will instantly damage the system. Only external rubbing parts are lubricated, for example, door hinges.
Why is a new refrigerator noisier than the old one?
Modern refrigerators often operate louder due to more powerful compressors and the presence of No Frost fans. In addition, older models are simply more “familiar” to the ear. The main thing is that the noise is uniform, without knocking or squealing.
Does the fullness of the refrigerator affect the noise?
Yes, an empty refrigerator may make a little more noise due to the resonance inside the chambers. Shelves filled with products absorb sound waves. However, you should also not overload the unit, so as not to disrupt air circulation.
What to do if the refrigerator is in a niche?
Make sure that the niche has sufficient ventilation. If the refrigerator is built into furniture, there is nowhere for hot air to escape, causing overheating and increased noise. Use only furniture designed for embedding appliances.