The situation when Atlant two-chamber refrigerator stops freezing in the lower compartment always takes you by surprise. The refrigerator can preserve food, but in the freezer the ice melts and the meat becomes soft. This is a sure sign that the cooling system has failed, and such signals cannot be ignored. Unlike old models with a single compressor, modern units have a more complex operating logic, where the failure of one unit affects the temperature regime throughout the entire circuit.
Most often, owners are faced with the fact that Atlant works, but there is not enough cold, or the compressor turns on for a couple of seconds and turns off. Before calling a technician, it is worth carrying out initial diagnostics to eliminate common operating errors or simple malfunctions. In 80% of cases, the problem lies in a violation of the tightness of the circuit or failure of the thermostat, and not in a burnt-out motor. Understanding the operating principle will help you save time and money on diagnostics.
In this article we will analyze in detail why the freezer does not work, how to independently check the main components and in which cases do-it-yourself repair is impossible. You will learn how to distinguish a refrigerant leak from an electronics failure and what to do if the “fur coat” is frozen. Timely response The first symptoms often save the compressor from an expensive replacement.
Main signs of a cooling system malfunction
The first alarm bell is a change in the consistency of the products. If the ice cream begins to look like porridge, and water appears in the bag of vegetables, it means that the temperature in the chamber has risen above normal. In two-chamber models Atlant with the No Frost system, this can also be signaled by the absence of the characteristic noise of a working fan or, conversely, its continuous hum. It is important not to confuse short-term defrosting during defrosting with a breakdown.
Pay attention to the operation of the compressor. The engine may run continuously, trying to catch up to temperature, or turn on infrequently and for short periods of time. In the first case, you risk overheating and failure of the motor, in the second, the food will simply spoil due to lack of cold. Noisy operation, clicks at startup or complete silence when the plug is plugged into the socket - all these are different symptoms of the same problem.
Visual inspection can also provide a lot of information. Check the door seals: if they do not fit tightly, warm air constantly enters and the system cannot cope with cooling. It is also worth looking into the freezer compartment: the presence of a thick layer of ice on the back wall or, conversely, a completely dry evaporator indicates different types of malfunctions.
- ❄️ The food in the freezer is soft, although the thermostat is turned up to the maximum.
- 🔊 The compressor hums continuously or does not turn on at all.
- 💧 Water has appeared on the floor under the refrigerator or at the bottom of the chamber.
- 🧊 The back wall is covered with an uneven layer of ice or is completely dry.
Problems with the thermostat and temperature sensors
One of the most common reasons why it does not freeze freezer, is a failure of thermostat (thermostat). This device is responsible for turning the compressor on and off depending on the temperature inside the chambers. If its contacts are stuck in the “open” position, the compressor simply will not receive a command to start. In models with electronic control, this function is responsible temperature sensor, which transmits data to the control module.
Diagnostics of a mechanical thermostat is quite simple. You need to get to its installation location (usually inside the refrigerator compartment or behind a plastic panel) and close the contacts directly. If during a short circuit the compressor starts working and cold appears, then the problem is in the regulator. For electronic systems, you will need a multimeter: the resistance of the sensor should change as the temperature of its sensitive element changes.
⚠️ Attention: Before any manipulations with electrical components, be sure to unplug the refrigerator! Working under voltage is dangerous to life and can lead to electric shock.
It is also important to check the integrity of the wiring leading to the sensors. In double-compartment refrigerators, wires often run through a door hinge or near moving parts where they can become chafed. An open circuit will cause the “brains” of the refrigerator to receive incorrect data and not start the cooling cycle. Replacing a sensor or thermostat is an inexpensive procedure and is often performed independently.
☑️ Checking the thermostat
Freon leakage and problems with the compressor
If the compressor runs constantly, but there is no cold, and the condenser (grid at the back) remains warm or slightly warm only at the beginning, most likely it has occurred refrigerant leakage. Freon circulates in a closed circuit, and if a hole has formed in the evaporator or condenser tubes, the gas evaporates. Without a sufficient amount of refrigerant, heat exchange does not occur, and the freezer ceases to perform its function.
The compressor is the “heart” of the refrigerator Atlant. If it burns out or jams, the refrigerator will either not turn on or will hum and knock out plugs. A sign of a motor malfunction is often the strong heating of its housing and the absence of vibration. In some cases, the problem lies in the start-up relay: if it does not send an impulse to start the windings, the engine will remain standing, emitting only a quiet hum or clicks.
Repairing a freon leak or a compressor breakdown requires special equipment and skills. You will need a vacuum pump, gauge station and refrigerant charger. It is almost impossible to independently find the location of a leak in a foamed housing without a leak detector. Therefore, in such cases, calling a specialist with equipment is the only rational solution.
How to check the compressor without tools?
If, when turned on, the refrigerator makes one loud click and goes silent, and after a while it clicks again, this is a sign of a tripped thermal relay. Most likely, the compressor is jammed or the starting winding is burned out.
| Symptom | Probable cause | Nature of repair |
|---|---|---|
| The compressor hums, but does not start | The starting relay is faulty or the motor is jammed | Replacing the relay or compressor |
| The refrigerator runs non-stop | Freon leakage or compressor wear | Searching for leaks, refueling or replacing the engine |
| The compressor is silent, there is light in the chamber | The thermostat or control module has burned out | Replacing the sensor/thermostat |
| Weak cold, ice is freezing | Loss of performance or blockage | Purge the system, replace the filter |
Faults in the No Frost system
In two-chamber refrigerators Atlant with the No Frost system, problems with the freezer are often associated with a violation air circulation. If the evaporator is clogged with ice due to a faulty defrost system, the fan cannot move cool air into the chamber. As a result, the freezer becomes warm, and water may appear on the back wall of the refrigerator compartment.
The key elements here are defrost heating element, timer (or electronic module) and defrost sensor. If the heating element is burned out, the ice does not melt during a pause in the compressor operation. If the sensor is faulty, the system “does not understand” that it is time to turn on the heating. Visually this manifests itself in the form of a large lump of ice (“coat”) on the evaporator, which blocks the operation of the fan.
For diagnostics, you need to remove the back panel in the freezer. If you see ice, carefully defrost the refrigerator (turning it off for a day) and check the integrity of the heating element with a multimeter. The resistance should be within normal limits (usually several hundred ohms). If the heating element is intact, the defrost sensor circuit is checked. A common mistake is trying to chip the ice with a knife, which leads to breakdown of the evaporator.
⚠️ Attention: Never use sharp objects or a hair dryer at maximum power to defrost the ice inside the chamber. Damage to the evaporator tubes will lead to an immediate leak of freon and expensive repairs.
Clogged capillary tube
Another technical reason why the freezer stops freezing is clogged capillary tube. In the freon circulation system, this is the narrowest part. If moisture, oil oxidation products or debris enter the circuit, the patency of the tube is impaired. Freon cannot circulate freely, the pressure in the system drops, and cooling stops.
Symptoms of a blockage are often similar to a leak: the compressor works, the condenser is only partially hot (to the point of the blockage), and the evaporator is cold only at the beginning or does not get cold at all. Sometimes you can hear a characteristic gurgling or hissing sound when the engine is running. It is difficult to determine the exact location of the blockage without pressure gauges, but often it is located at the entrance to the evaporator.
This problem is eliminated by purging the system with nitrogen under high pressure. If simple blowing does not help, craftsmen can use the “back pressure” method or replace a section of the capillary tube. This is a complex procedure that requires soldering and subsequent vacuuming of the system, so it cannot be performed at home without equipment.
- 🛠️ Dry nitrogen is used for the product; ordinary air cannot be used due to moisture.
- 🔥 Soldering copper tubes requires special solder and flux.
- ⏳ After removing the blockage, long-term vacuuming of the system is required.
When you need to call a technician
Despite the desire to save money, there are situations when self-repair of the refrigerator Atlant is impractical or dangerous. If diagnostics show that the problem is in the sealed circuit (leakage, blockage) or in the compressor itself, it is better to entrust the work to professionals. They have access to original spare parts and guarantee the quality of soldering and filling.
It is also worth contacting the service if after replacing the thermostat or heating element the problem does not go away. This may indicate more complex hidden defects, for example, an interturn short circuit in the motor windings or a malfunction of the electronic control module, which requires flashing or replacing the board.
Remember that incorrect diagnosis can lead to worsening the damage. For example, an attempt to start a “jammed” compressor using capacitors often leads to its final combustion. A competent approach and a sober assessment of your strengths are the key to successful restoration of equipment.
Why does the Atlant refrigerator turn on for 10 seconds and turn off?
This is a classic symptom of a faulty start relay or jammed compressor. The relay tries to start the engine, the current increases sharply, and the thermal protection opens the circuit. The relay needs to be replaced. If it doesn’t help, the problem is in the motor.
Is it possible to operate the refrigerator if the freezer is not freezing?
For a short time, it is possible, but not recommended. Constant idling of the compressor (if there is a leak) or frequent starts will lead to its overheating and eventual breakdown. It is better to turn off the device before repair.
How often does Atlant No Frost need to be defrosted?
The No Frost system involves automatic defrosting of the evaporator. However, once every year or two it is recommended to completely defrost the refrigerator (for 12-24 hours) for hygienic treatment and removal of hard-to-reach ice in hidden cavities.