The situation when a household refrigerator stops performing its direct functions always takes you by surprise. It’s especially offensive when it comes to Belarusian-made equipment Atlant, which is famous for its reliability and durability. However, even the highest quality units are subject to wear, and timely identification of the problem can save products from damage and the owner from expensive repairs or the purchase of new equipment. Primary diagnostics is not just checking for the presence of light in the chamber, but a comprehensive analysis of the operation of all systems.
Before you panic and call a technician, you need to carefully listen to the operation of the unit and inspect it visually. Refrigeration circuit is a closed system, and any failure in it immediately affects the temperature inside the chambers. Understanding the basic principles of compressor and refrigerant operation will help you differentiate between a minor problem that you can fix yourself and a major breakdown that requires professional attention. In this article, we will analyze in detail all the symptoms by which you can determine that your refrigerator has stopped working correctly.
Pay attention to how long ago you defrosted it. Sometimes the reason for the lack of cold is simple freezing of the evaporator due to a leak in the door seal. If you are sure that the equipment was serviced correctly, but the products still begin to deteriorate, then it’s time for diagnostics. We will look at the main signs of failure of key components, such as compressor, thermostat and heat removal system.
Visual signs of malfunction and external indicators
The first thing you should pay attention to if you suspect a breakdown is the appearance of the refrigerator and behavior of indicators. Modern models Atlant often are equipped with a digital display that can signal errors with codes or flashing lights. However, even in classic models without electronics, there are visual markers that cannot be ignored. For example, swelling of the rear wall or the appearance of oily spots under the unit indicates serious problems with the tightness of the system.
If inside the chambers you notice ice in only one corner or, conversely, a complete absence of frost on the evaporator while the engine is running, this is a sure sign of a violation of the refrigerant circulation. Freon should be evenly distributed throughout the tubes, and any deviations from the norm indicate a clogged capillary tube or gas leak. Also an important indicator is the condition of the products: if the ice cream has become soft and the milk has soured faster than usual, it means that the temperature regime is not being maintained.
⚠️ Attention: If you find a puddle under the refrigerator with a sharp chemical odor or an oily film, immediately unplug the appliance and ventilate the room. This may indicate a refrigerant leak along with compressor oil, which is hazardous to health and a fire hazard.
Check the integrity of the sealing rubber on the doors. Even a microscopic crack or loss of elasticity leads to a constant flow of warm air. In this case, the compressor will work non-stop, trying to compensate for heat loss, which will ultimately lead to its burnout. A visual inspection should also include checking the rear grille: it should not be hot to the touch to the point where it is impossible to touch it, but it cannot be cold when the motor is running.
Analysis of sound signals: noise, hum and silence
Sound accompaniment of the refrigerator Atlant —one of the most accurate diagnostic tools. A working unit emits a smooth, low-frequency hum, which either subsides or intensifies depending on the operating cycle. If you hear loud clicking sounds when you try to start, this may indicate a faulty start relay or problems with the motor windings. Starting relay responsible for starting the motor, and its frequent clicking sound indicates that the compressor is trying, but cannot start.
Complete silence where there should be a working hum is also an alarming signal. If the indicators are on, there is light, but the motor is silent, the compressor itself may have burned out or the electronic control module has failed. On the other hand, the appearance of gurgling sounds, whistling or hissing indicates a disruption in the movement of freon through the system. Such sounds often accompany leaks or blockages in the capillary system.
Strong vibration of the housing, knocking and rattling can be caused not only by breakdown, but also by improper installation. Make sure the refrigerator's feet are adjusted and that it is level. However, if the vibration is accompanied by a metallic clanging sound inside the motor, this is a sign of worn bearings or destruction of the compressor suspension. In this case, further operation may lead to the final failure of the unit.
Temperature conditions: why the freezer does not freeze
The most obvious sign that the refrigerator Atlant is not working is an increase in temperature in the freezer and refrigerator compartments. However, it is important to distinguish between situations when the temperature rises slowly and when the cold disappears completely. If food in the freezer begins to defrost, and the refrigerator compartment is warm, but the motor runs continuously, there is most likely a leak. The freon in the system becomes insufficient to create the required pressure. refrigerant. The freon in the system becomes insufficient to create the required pressure.
In models with the No Frost system, the lack of cold is often associated with a breakdown of the fan or defrost heating element. If the evaporator is covered with an ice coat, air cannot circulate through the chambers. As a result, the engine hums, but there is no cold. You can check this by looking into the freezer (after defrosting it): if a thick layer of ice is visible on the back wall and the ventilation holes are clogged, the problem lies in the defrosting system.
Uneven cooling is also a symptom of a malfunction. For example, if the door is warm, but the back wall is cold, the seal of the door may be broken or the cold air supply channel is clogged. If the cold disappears only in one of the compartments of a two-chamber refrigerator, this may indicate problems with the mode switch or a blockage in a specific branch of the circuit.
Why is it warm in the refrigerator compartment, but cold in the freezer?
This is a common problem in single-compressor models. If the freezer is working and the refrigerator compartment is warm, the most common culprit is a clogged capillary tube or a freon leak in the refrigerator compartment circuit. It is also possible that the thermostat fails, which does not give a command to cool the upper compartment.
Diagnostics of the compressor: is the heart of the refrigerator working
The compressor is the main component of any refrigerator Atlant, and its serviceability is critically important. You can understand that the compressor is not working not only by the absence of cold, but also by its temperature. During operation, the motor housing should be warm or hot (depending on the model and load). If the engine is cold but humming, the piston group may be stuck. If it is red-hot or has a burning smell, this is a sign of an overload or an interturn short circuit.
Frequent switching on and off of the motor with an interval of several seconds or minutes is called "clocking". This condition is extremely dangerous for the engine. It can be caused by a drop in voltage in the network, a malfunction of the starting relay, or a loss of performance of the compressor itself. Electric motor under such conditions it experiences enormous overloads and can burn out in a matter of hours.
For more accurate diagnostics, technicians use a pressure gauge station, measuring the pressure in the system. However, at home, you can evaluate the operation of the compressor by the current consumption (if you have access to an electric meter or current clamps). A sharp jump in energy consumption at startup, followed by a shutdown, indicates a short circuit in the windings or mechanical wedge.
☑️ Initial check of the compressor
Table of main symptoms and probable causes
For the convenience of systematizing the data obtained, we have compiled a table that will help compare the observed symptoms with the most likely causes of the malfunction. Remember that an accurate diagnosis can only be made by a specialist after opening the case and taking measurements of the devices.
| Symptom | Probable cause | Difficulty of repair | Necessity of a specialist |
|---|---|---|---|
| The motor hums, but does not start, clicks | Malfunction of the start relay or compressor wedge | Average | Recommended |
| The refrigerator runs without stopping | Freon leak, seal wear, thermostat failure | High | Required |
| Ice in the freezer, warm in the refrigerator | Clogged capillary system, leakage in the cold circuit | High | Required |
| Strong ice on the back wall (No Frost) | Malfunction of the defrost heating element, timer or sensor | Average | Possibly by yourself |
| Extraneous noise, vibration | Incorrect installation, wear of bearings, contact of tubes | Low | Not always |
Analysis of the table shows that many serious problems, such as gas leaks or system blockages, require professional intervention and special equipment. Independent attempts to refill the refrigerator or replace the compressor without the skills of soldering and vacuuming the system can lead to complete breakdown of the unit. However, some tasks, such as replacing a seal or thermostat, can be done independently if you have the tools.
It is important to understand that a combination of several symptoms (for example, engine overheating and lack of cold) narrows the range of possible causes. If the refrigerator Atlant stopped working after a power surge, first of all you should check the fuses and the electronic control board, if the model has one.
Problems with the thermostat and electronics
The thermostat (thermostat) is a device that commands the compressor to turn on or off depending on the temperature in the chamber. If this element fails, the refrigerator may either not turn on at all, or work continuously, freezing all food to the point of stone. In mechanical thermostats, contacts often oxidize or the sensitivity of the bellows tube, which responds to temperature changes, is lost.
In modern models with electronic control, the control module and temperature sensors are responsible for the temperature regime. Failure of one of the sensors (for example, the evaporator sensor) can lead to incorrect operation of the entire unit. Electronics often signal errors by flashing indicators. The decoding of these codes is contained in the operating instructions for your specific model Atlant.
⚠️ Attention: When replacing a thermostat or sensors, it is important to use original spare parts or their full analogues. Installing an element that is not suitable for its characteristics will lead to incorrect operating cycles of the compressor and its rapid wear.
You can check a mechanical thermostat by closing its contacts directly (for diagnostics). If, when shorted, the compressor starts and the refrigerator begins to freeze, then the problem is in the regulator. However, such manipulations require compliance with safety precautions and disconnecting the device from the network before starting work.
Frequently asked questions about malfunctions of Atlant refrigerators
Why is the Atlant refrigerator loud hums during operation?
A loud hum can be caused by several reasons: incorrect installation (legs are not adjusted), wear on the compressor bearings, loose motor mounts or pipes, as well as fan operation in No Frost models. If the humming appears suddenly and is accompanied by vibration, most likely the problem is mechanical.
What to do if ice forms on the back wall of the refrigerator?
The formation of ice (“coat”) on the back wall in models with a drip system is acceptable in small quantities, but a thick layer of ice indicates problems. Possible reasons: the door is not tightly closed, the seal is worn out, the thermostat is faulty (does not turn off the motor) or problems with defrosting in No Frost systems. It is necessary to defrost the refrigerator and check the tightness of the door.
Is it possible to operate the refrigerator if it does not freeze, but the motor is running?
It is strictly not recommended. If the motor is running, but there is no cold, this means that the system is operating in emergency mode (for example, due to a freon leak or blockage). This leads to overheating and combustion of the compressor. In addition, bacteria will begin to multiply in the chambers due to the high temperature. The unit needs to be turned off and diagnosed.
How often do you need to defrost the Atlant refrigerator?
Models with manual defrosting or a drip system require defrosting at least once every 6 months, and better - every 3-4 months, or when the layer of frost reaches 5 mm. Models with the No Frost system do not need defrosting, but it is recommended to wash and dry them once a year for hygiene.