An extraneous hum or sharp knock in kitchen appliances always causes alarm, especially when it comes to such an important unit, how Atlant refrigerator. Many owners are faced with a situation when a properly working device begins to make unusual sounds that interfere with a comfortable stay in the kitchen. In most cases, these noises do not indicate a critical breakdown, but are a consequence of violation of installation rules or natural wear and tear of individual elements.
Before calling a technician or looking for a service center, you need to conduct independent diagnostics. Understanding the nature of the sound - whether it is a monotonous hum, periodic gurgling or sharp clicks - will help determine the exact cause of the malfunction. In this article, we will analyze the main sources of noise in the models of the Belarusian manufacturer and provide a step-by-step algorithm for eliminating them yourself.
⚠️ Attention: Any diagnostic and repair work must be carried out only after the device has been completely disconnected from the electrical network. Failure to comply with safety precautions can lead to electric shock.
Diagnostics of the nature of noise and initial inspection
The first step in solving the problem is to accurately determine the type of sound emitted. The nature of the acoustic signal often directly indicates a node that requires attention. For example, a low-frequency hum may indicate operation compressor, while a ringing knock is often associated with vibration of internal shelves or pipelines.
Listen carefully to exactly when the noise appears: constantly, only when the motor is turned on, or when turned off. It is also worth checking whether the volume of the unit has changed after a recent defrosting or rearrangement of furniture. If the sound appears abruptly and is accompanied by a refusal of the equipment to cool the food, this is a signal of a serious malfunction.
For the convenience of classifying problems, let's consider the main types of sounds:
- 🔊 Monotonous hum - often indicates problems with the compressor mounting or fan operation.
- 🔨 Sharp knocks and clanging - may be caused by tubes touching each other or a malfunction of the start relay.
- 💧 Gurgling and overflowing - usually this is a normal sound of refrigerant moving through the system, but may indicate a leak.
- 🌪 Whistling or howling - characteristic of problems with the system No Frost or ice fan.
⚠️ Attention: If you hear a loud bang followed by silence and no cold, turn off the appliance immediately. This may be a sign of an interturn short circuit in the motor windings.
Checking the correct installation and alignment of the case
One of the most common causes of extraneous vibrations and hum is improper installation of the refrigerator. If the body is skewed or is unstable, the working compressor causes a resonance of the entire structure, increasing the noise significantly. Vibration is transmitted to the floor and walls, creating an unpleasant acoustic background.
To eliminate this problem, you need to check the horizontal installation using a building level. Adjustment is carried out by twisting or unscrewing the front support legs. It is important to achieve a position in which the doors will slam shut independently when opened to 45 degrees.
☑️ Checking the installation of the refrigerator
You should also make sure that the refrigerator does not touch the back wall of the radiator or other objects. The minimum distance to the wall should be 5-10 cm to ensure normal air circulation. If the unit is in a niche, check the gaps on the sides - they should be at least 5 cm.
Elimination of resonance of internal elements and pipes
Inside the refrigerator compartment and behind the rear panel there are various elements that can vibrate. Often the source of ringing is glass shelves that are not fully installed in the grooves, or plastic dishes standing on the door. It is enough to correct them or remove unnecessary objects so that the sound disappears.
A more complex case is the resonance of copper tubes refrigerant. When the compressor operates, they may vibrate and come into contact with each other or with the housing wall. To diagnose, remove the back panel (if there is one) or carefully move the refrigerator away. Having found tubes that touch each other, they must be carefully separated with your hands, being careful not to damage the metal.
Sometimes the tubes may touch the compressor housing. In this place it is recommended to install a rubber damper or simply lay a piece of soft rubber between the metal of the pipe and the motor housing. This simple action often completely eliminates the metal clang.
The table below will help compare the source of the sound with the method of eliminating it:
| Sound source | Nature of the noise | Elimination method |
|---|---|---|
| Glass shelves | Ringing, rattling | Adjust shelves, place silicone gaskets |
| Copper tubes | Metal clanging | Spread the tubes, install rubber dampers |
| Fan (No Frost) | Hum, friction, whistling | Defrosting, lubricating or replacing the fan |
| Condensation tray | Vibration, rattling | Secure the tray, check the fastenings |
Diagnostics and maintenance of the No Frost system
Refrigerators Atlant with the system No Frost equipped with fans that ensure circulation of cold air. Over time, the grease in the fan bearings may dry out, or an ice crust may form on the blades. This results in a loud hum, howling or friction.
If you hear noise coming from the top of the freezer (or from a special compartment), most likely the problem is in the fan. The first step should be to completely defrost the refrigerator within 24 hours. Often the ice frozen on the fan axis melts, and the device begins to work quietly again.
What to do if defrosting did not help?
If the noise returns after complete defrosting, it means the bearings of the fan motor have worn out. In this case, the entire fan assembly must be replaced with a new one. Self-lubrication often gives only a temporary effect.
To replace the fan, you need to remove the back wall in the freezer, disconnect the terminals and install a new part. When choosing a spare part, pay attention to the dimensions and supply voltage indicated on the label of the old device.
Noises associated with the operation of the compressor and start relay
The heart of the refrigerator is compressor. Normal engine operation is accompanied by a quiet hum. However, if the sound becomes loud, growling, or accompanied by strong vibration of the frame, this may indicate wear on the internal mechanisms or problems with the fastening.
The compressor is attached to the frame by four shock absorbers (springs or rubber bushings). If one of the bushings bursts or comes off, the engine begins to hit the metal frame, creating a loud knocking sound. In this case, it is necessary to lift the casing (being careful with the tubes!) and replace the damaged fastening element.
Another cause of noise may be starting relay. If it is faulty, the compressor may hum but not start, or make a loud clicking noise when trying to start. The relay is checked by ringing the contacts with a multimeter or by visual inspection for melting.
⚠️ Attention: Replacing the compressor or start relay requires a special tool for soldering copper pipes and a vacuum pump for charging freon. Without experience, it is better to entrust such work to professionals.
When you need to call a specialist: critical malfunctions
Not all noise can be eliminated yourself. There are situations when attempting to repair it yourself can lead to permanent equipment failure. If, after checking the installation, internal shelves and pipes, the loud sound persists, the problem probably lies deep inside the unit.
Critical symptoms are: discoloration of the oil around the compressor (a sign of a leak), a burning smell, lack of cold when the engine is running. In such cases, professional diagnostics are required using a pressure gauge manifold and a leak detector.
A specialist will be able to accurately determine whether it is necessary to replace the compressor, remove a blockage in the capillary system, or completely refill the circuit. refrigerant. Independent intervention in a sealed circuit without equipment is impossible and dangerous.
Why did the Atlant refrigerator start to hum loudly after defrosting?
After defrosting, the noise may increase if you turned on the appliance too quickly or did not dry the ventilation ducts properly. It is also possible that during washing, water entered the electrical part of the fan. Let the refrigerator remain turned off for a few more hours.
Is it normal for the refrigerator to make gurgling sounds?
Yes, this is absolutely normal. The sound of flowing liquid indicates the circulation of refrigerant through the system. This is especially audible in models with one compressor, when the refrigerant moves from one chamber to another.
Is it possible to lubricate a compressor if it is noisy?
No, modern compressors are sealed units and do not require lubrication during operation. An attempt to drill the housing or disassemble it will lead to freon leakage and damage to the unit. The noisy compressor must only be replaced.
How often do you need to defrost the Atlant refrigerator?
Models with manual defrosting require disconnecting from the network 1-2 times a year. No Frost and Full No Frost systems do not require regular defrosting, but a preventative shutdown once a year for washing and drying will only benefit the equipment.