The situation when in the freezer Atlant food freezes “to stone”, and in the upper chamber there is room temperature, is familiar to many owners of this equipment. This is a classic symptom indicating that refrigerant circulation the control system is broken or has stopped sending the cooling command. Unlike No Frost systems, where a fan is responsible for the distribution of cold, in Atlant drip models the cold is transmitted through the walls or individual evaporators.
The first thing the owner needs to do is to assess the scale of the problem. If the compressor hums continuously, but there is no cold, or it is silent, although the indicators are on, the action algorithm will be different. Often the reason lies in a banal sticking of the thermostat, but more serious breakdowns cannot be ruled out, such as freon leak or failure of the motor-compressor. Ignoring the first signs of a malfunction can lead to complete defrosting of food and damage to equipment.
Self-diagnosis helps you understand whether the problem can be solved on your own or whether you need to call a technician. It is important not to panic and consistently check the main components of the unit. In this article we will analyze the main components responsible for generating cold and methods for checking them.
The main reasons for the lack of cold in the upper chamber
There are several key factors why refrigerator compartment ceases to perform its functions. Most often, the problem lies in a violation of heat exchange or failures in the electrical control circuit. If you notice that “snow ice” has disappeared on the back wall of the chamber or it remains warm when the compressor is running, this is an alarming signal.
One of the common reasons is circuit leakage. Even a microscopic crack in the evaporator or condenser tubes leads to a gradual release of refrigerant. The freon evaporates, and the pressure in the system drops below the critical level required for boiling and heat absorption.
⚠️ Attention: If you hear hissing when the refrigerator is operating or smell a specific chemical odor, immediately unplug the appliance and provide ventilation!room damage. This may indicate an active gas leak.
It is also worth considering the human factor. Sometimes users themselves create conditions that prevent normal operation. For example, loading the chamber with hot products or tightly packing shelves, blocking air circulation. In models with a “crying evaporator” system, it is important that the products do not touch the back wall, otherwise the sensors will read the wrong temperature.
Malfunctions of the thermostat and temperature sensors
The thermostat (thermostat) is the “brain” that decides when to turn the compressor on and off. If Atlant refrigerator it does not freeze, but works constantly or, conversely, is silent, this particular node is the first to come under suspicion. Old models use mechanical thermostats, new ones use electronic sensors (thermistors).
A mechanical thermostat is a device with a capillary tube that is attached to the evaporator. As the temperature changes, the gas inside the tube expands or contracts, opening or closing the contacts. If depressurization the bellows or contact sticking occurs, the compressor will not receive a signal to start. You can check it by temporarily closing the contacts directly (for experienced users).
In models with electronic control, thermistoris responsible for temperature control. This is a resistor that changes its resistance depending on heat. If the sensor “lies” and shows the control module that it is already -5°C in the chamber, although it is +15°C, the refrigerator simply will not turn on. Replacing the sensor usually requires disassembling the internal panel.
- 🔍 Symptoms of failure: the compressor does not start, the temperature indicator is blinking, there is no click when turning the thermostat knob.
- 🛠️ Check method: testing the contacts with a multimeter or visual inspection for oxidation and corrosion.
- ❄️ Temporary solution: setting the regulator to maximum (for mechanics) can force the system to start, but this is not a repair.
It is worth noting that in two-compressor models Atlant Different circuits and different thermostats are responsible for the refrigerator and freezer compartments. If only the upper chamber does not work, but the lower one freezes properly, the problem is localized precisely in the upper evaporator circuit or its sensor.
Problems with the compressor and start relay
The compressor is the heart of the refrigeration unit. If it does not start or works intermittently, the cold is not physically produced. Often owners hear a quiet hum, a click and subsequent silence. This is a classic picture of a malfunction starting relay or the motor itself.
The starting relay is responsible for supplying a starting pulse to the motor winding. Over time, the contacts inside the relay burn out and the bimetallic strip becomes deformed. As a result, the engine hums, trying to start, but the relay opens the circuit to prevent overheating. Replacing the relay is one of the simplest and cheapest repair procedures.
A more serious situation is turn-to-turn short circuit the compressor windings or its mechanical wear. In this case, the engine may either not respond to switching on, or operate extremely inefficiently, without creating the necessary pressure in the system. If the compressor is hot to the touch, but does not start, there is a high probability of a “wedge”.
| Symptom | Probable cause | Actions |
|---|---|---|
| Silence, no buzz | No power, thermostat burned out, open circuit | Check the socket, ring the thermostat |
| Buzz for 5-10 seconds, then click | Faulty starting relay or compressor wedge | Replace the relay, check the compressor |
| Works constantly, without turning off | Freon leak, compressor wear, poor tightness | Check the pressure, search leaks |
| Strong vibration and noise | Unbalancing, wear of the compressor suspension | Check shock absorbers, position of the device |
When replacing a compressor, it is important to consider that the system requires evacuation and refilling with a strictly defined amount refrigerant. It is impossible to carry out this procedure independently without equipment.
☑️ Compressor diagnostics
Refrigerant leak and capillary tube clogged
If the compressor is working properly, hums smoothly and does not turn off for a long time, but there is no cold in the chambers, most likely there is a problem in flon. Freon can leak through microcracks in the foamed part of the body or in places where the tubes are soldered. Without a working fluid, the heat exchange process is impossible.
Another common problem is clogged capillary tube. Oil circulates in the system, which oxidizes over time, or moisture gets in there. Plugs form, blocking the freon flow. The pressure at the outlet of the compressor increases and at the inlet it decreases, but the cooling capacity tends to zero. A characteristic sign is a hot condenser (grid at the back) only in the first third or completely cold.
Diagnostics of a leak often requires the use of a leak detector or a soap solution (for visible parts). If the leak is in the foamed part (inside the walls), the repair becomes economically unfeasible, since it requires opening the housing or installing an external evaporator (“weeping cap”).
- 💧 Signs of a leak: swelling of the side walls, lack of heating of the condenser, oily spots under the refrigerator.
- 🧊 Signs blockage: the freezer is working, and the refrigerator compartment is warm, intermittent operation of the compressor.
- 🔧 Solution: purging the system with nitrogen, replacing the filter-drier, evacuation and refilling.
It is important to understand that refilling freon without eliminating the cause of the leak is a temporary measure. The gas will leave again after a while, and the compressor may burn out from operating in extreme conditions.
⚠️ Attention: Do not try to pierce the pipes yourself or add freon from cans for car air conditioners. This will lead to complete breakdown of the system and can be hazardous to health!
Malfunctions of the defrost system (for No Frost models)
Although many Atlantas equipped with a drip system, there are also combined models or completely No Frost. If you have just such a model, and the refrigerator compartment has stopped working, the reason may lie in the defrost system. A snow “coat” on the evaporator, hidden behind the rear panel, blocks the access of cold air into the chamber.
Three main elements are responsible for defrosting: Defrost heating element, defrost sensor (defroster) and timer (or electronic module). If the heating element burns out or the sensor does not give a command to turn on the heating, ice builds up. The fan that drives the air is either stopped by ice, or blows through an ice plug that does not allow flow.
You can check the system by defrosting the refrigerator manually within 24 hours. If after switching on it worked normally, but a week later the problem recurred, the diagnosis is confirmed. It is necessary to change elements of the defrost system. Often the entire set fails at once.
Mechanical damage and door tightness
Sometimes the reason is trivial and lies in a violation of the tightness of the circuit. If sealing rubber the doors are worn out, dirty or deformed, warm air constantly enters the chamber. The compressor tries to compensate for the heat, working for wear, but cannot cope with the volume.
It is also worth checking the door misalignments. If the refrigerator is not level or the hinges are sagging, the door may not fit tightly even with intact rubber. You can check the tightness with a simple sheet of paper: clamp it with the door around the perimeter. If the paper is removed without effort, the seal is broken.
Another mechanical factor is damage to the internal partitions or air ducts (in two-chamber models). If the damper that regulates the supply of cold air from the freezer to the refrigerator compartment is stuck in the closed position, the upper compartment will remain warm. This often happens when defrosting carelessly or loading large-sized products.
When you need to call a technician
Independent repair is possible when replacing a thermostat, relay, seal or sensors. However, there are situations when professional intervention is necessary. If you need soldering tubesreplacement of the compressor or searching for a leak in the foamed part, you cannot do without special tools.
A master is also needed if you are not confident in your abilities when diagnosing the electrical part. Incorrect connection may result in short circuit or fire. In addition, the specialist will give a guarantee for the work performed, which is important for expensive equipment.
Why does the Atlant refrigerator work, but does not freeze after defrosting?
Often after a long defrosting (more than 24 hours), a failure occurs in the control system, or moisture remains in the tubes. If you leave the refrigerator turned off for several hours after defrosting, residual moisture may freeze in the capillary tube, creating an ice block. The sensor could also fail if it was suddenly heated with a hairdryer.
Is it possible to operate the refrigerator if the upper chamber does not work?
For a short time - yes, if you use it only as a freezer. However, the compressor will work harder, trying to gain temperature, which will lead to rapid wear. Long-term operation in this mode is not recommended.
How long should a new Atlant refrigerator reach its temperature?
After the first switching on, the refrigerator requires from 2 to 12 hours to reach operating temperature, depending on the model and the ambient temperature in the room. At this time, you should not load food and often open the doors.
What to do if ice freezes in the Atlant refrigerator compartment?
Abundant freezing of ice (coat) indicates a leaky door, a malfunction of the defrost sensor (in No Frost) or frequent opening of the door in high humidity conditions. It is necessary to check the seal and operating mode.