The situation when the refrigerator Atlant works, but stops cooling the upper chamber, always causes panic. Products begin to deteriorate, and condensation appears on the shelves or, conversely, everything turns into ice. The owner immediately asks the question: what happened and is it possible to repair the equipment yourself?
Many problems can indeed be solved by simply rebooting or replacing the seal, but there are also complex breakdowns that require the intervention of a specialist. Important to understandthat double-chamber models, unlike single-chamber ones, have a more complex system refrigerant circulation. If there is ice in the freezer and heat in the refrigerator compartment, this narrows the scope of troubleshooting.
In this article we will analyze in detail the main causes of equipment failure, symptoms of various breakdowns and an algorithm of actions. The most common reason is a violation of the defrosting mode or sticking of the thermostat, and not a failure of the compressor. Carefully study the symptoms so as not to overpay for diagnosing the obvious things.
No Frost system and problems with defrosting
If you have a model with the system No Frostthen the lack of cold in the upper compartment is often associated with a malfunction of the system evaporator defrost. In such refrigerators, cold air is forced by a fan from the freezer into the refrigerator through special channels. If the evaporator becomes overgrown with a “fur coat,” the air flow is blocked, and the cold simply does not reach the products.
A timer, heating element (heating element) and defrost sensor are responsible for the defrosting process. If any of these components fail, the ice does not melt, but accumulates. The fan starts to hum or stops due to frozen blades. As a result, the compressor works without interruption, trying to catch up with the temperature, but there is no effect.
- 🧊 Symptoms: ice is visible on the back wall, the fan is humming or silent, the compressor is hot and works constantly.
- 🔌 Actions: it is necessary to completely defrost the refrigerator (at least 24 hours with open doors).
- 🛠️ Repair: if after defrosting the equipment started working for 5-7 days and stopped freezing again, the problem is in the defrosting circuit (heating element, sensor or timer).
⚠️ Attention: Do not try beat off the ice with a knife or boiling water! Mechanical damage to the evaporator will lead to an immediate release of freon and expensive repairs with sealing of tubes.
Often owners ignore the hum of the fan, considering this to be the norm. However, in good condition, the operation of the system No Frost is almost silent. If you hear extraneous sounds coming from the depths of the housing, this is a sure sign that the blades are touching ice.
Malfunctions of the thermostat and sensors
The thermostat (thermostat) is the “brain” that commands the compressor to turn on or off. Older models Atlant use mechanical regulators with a bellows, while new ones use electronic sensors (thermistors). If this element fails, it may “think” that the chamber is already cold enough and not start the motor.
In mechanical thermostats, the internal membrane often breaks or the tightness of the capillary tube is lost. In electronic models, the sensor may simply “lie” to the controller due to oxidation of the contacts or aging of the resistive element. In both cases, the refrigerator is turned off until the food spoils.
You can check the mechanical thermostat by closing its contacts directly. If the compressor starts, it means the regulator is to blame. For electronic systems, you will need a multimeter to measure the resistance of the sensor at different temperatures.
It is worth noting that in two-compressor models Atlant each chamber has its own thermostat. If only the top does not freeze, and the freezer works perfectly, then look for the problem in the refrigerator compartment regulator or in its electrical circuit.
Refrigerant (freon) leak
One of the most unpleasant reasons why Atlant refrigerator It's freezing, it's a banal freon leak. The refrigerant circulates in a closed circuit, and if the seal is broken, the gas escapes. Without a sufficient amount of freon, heat exchange is impossible, and the temperature in the chambers is compared with room temperature.
Leaks often occur in the foamed part of the body (internal partitions) due to corrosion of the evaporator tubes. The cause may also be mechanical damage during transportation or poor-quality factory soldering. It is difficult to visually notice a leak, since freon is colorless and odorless.
| Symptom | Probable cause | Actions |
|---|---|---|
| The compressor runs constantly | An attempt to compensate for the shortage cold | Call a technician to find a leak |
| The freezer is working, the top is warm | Partial leak or blockage | Check the airflow and defrost |
| The tubes at the back are cold or warm | Lack of freon in the system | Refilling and soldering required |
| The compressor is hot, but silent | Thermal relay has tripped | Allow to cool, check starting |
If you notice that the condenser grille at the back of the refrigerator (or the side walls, if they get hot) remains cold when the motor is running, this is an almost guaranteed leak. Normal operation means that these elements should be warm or hot.
Problems with the compressor and start relay
The compressor is the heart of the refrigerator. If it does not start or works intermittently, there will be no cold anywhere. Often the problem lies not in the motor itself, but in the start-up relay. This is a small part that fits onto the contacts of the compressor and gives an impulse to start.
If the relay malfunctions, the compressor may hum, click, try to start and immediately stall. Or it may not make any sounds. In models Atlant with inverter compressors the situation is more complicated: there an electronic control unit is responsible for starting, which can display an error on the display.
- 🔊 Clicks and hum: a sign of a jammed compressor or a faulty start relay.
- 🔥 Strong heating: if the motor is hot to the touch, but does not start, there may be an interturn short circuit in the winding.
- 🔌 No reactions: check for voltage in the outlet and the integrity of the power cord.
Replacing the start relay is a simple and inexpensive procedure. However, if the compressor itself burns out, repairs often become economically unfeasible, since the cost of a new motor and work to replace it (vacuuming, refilling) is high.
Clogged capillary tube
There is a very thin part in the freon circulation system - a capillary tube. Its diameter is a fraction of a millimeter. If moisture or oil breakdown products get into the system, an ice or dirt plug may form there. This prevents the normal circulation of the refrigerant.
When clogged, the compressor works with increased load, trying to push the freon. A characteristic sign is that the refrigerator freezes very weakly or cyclically (it will work and turn off for a long time). Often, the condenser grid is only half hot or to the point of blockage.
To eliminate this malfunction you need to:
- Drain the old freon.
- Purge the system with nitrogen under high pressure.
- Replace the filter drier (required!).
- Evacuate the system and fill with new freon.
⚠️ Attention: It is absolutely impossible to remove blockages on your own without a vacuum pump and a pressure gauge station. You can force moisture deeper into the system or damage the compressor due to water hammer.
Why does a blockage form?
Clogging most often occurs due to a violation of the tightness of the circuit (moisture ingress) or the use of low-quality oil during repairs. The moisture in the system freezes in the narrowest part - the capillary, blocking the freon flow.
Violation of the tightness of the door and seal
Sometimes the reason for warm air in the chamber is trivial - a loose fit of the door. Over time, the rubber seal dries out, cracks, or simply becomes dirty. Through the cracks, warm, moist air enters the refrigerator, which the cooling system does not have time to cool.
You can check the tightness with a simple test with a sheet of paper. Clamp the sheet with the door around the perimeter. If it is pulled out too easily or with different forces in different places, the seal requires replacement or adjustment of the door hinges.
Also pay attention to the skew of the door. If the refrigerator is not level, the door may not close completely on its own. Adjust the legs of the refrigerator so that the body has a slight tilt back.
Do-it-yourself initial diagnostic algorithm
Before calling a technician, try to carry out independent diagnostics. This will help you more accurately describe the problem to a specialist and, possibly, avoid unnecessary expenses. Many owners miss simple things, focusing on complex breakdowns.
Start by completely disconnecting the device from the network. Leave it to defrost for a day. This will eliminate problems with the system No Frost and allow the compressor to cool down. After turning on, listen to how it starts: smoothly or with a hum.
☑️ Primary check checklist
If, after complete defrosting, the refrigerator worked normally for several hours, and then stopped freezing again, the problem is cyclical. This almost always indicates a malfunction in the defrost circuit or a blockage.
When you need to call a technician
There are a number of situations when independent repair is impossible or dangerous. If you find oily spots under the refrigerator, this is a sign of freon leakage along with oil. This requires soldering and professional equipment.
You also need a master if:
- The compressor hums, but does not start (replacing the relay did not help).
- A smell of burning or melted wiring has appeared in the chamber.
- Electronic the control module displays an error code.
- The evaporator in the foamed part of the case needs to be replaced.
Refrigerator repair Atlant often requires specific spare parts, which are available from certified specialists. The use of analogues can lead to repeated failure in a short time.
Why does the Atlant refrigerator freeze only after complete defrosting?
This is a classic sign of a malfunction of the defrost system (in No Frost models). Ice builds up on the evaporator, blocking the cold air supply channels. After defrosting, the ice melts, the channels are freed, and the cold begins to flow again. A few days later the cycle repeats. It is necessary to change the heating element, defrost sensor or timer.
Is it possible to operate the refrigerator if it does not freeze in the upper chamber?
For a short time - yes, if the compressor does not work non-stop. However, long-term operation in this mode is dangerous. If the cause is a leak, the compressor may burn out from overheating. If it is in a defrost system, water may leak onto the floor or into the lower drawers. It is better to eliminate the malfunction.
How much does the repair cost if Atlas stops freezing?
The cost depends on the breakdown. Replacing the thermostat or start relay is an inexpensive repair. Refilling with freon and finding leaks will cost more. Replacing a compressor is the most expensive procedure. The exact price can only be given after on-site diagnostics.