The Atlas two-chamber refrigerator does not freeze: 7 reasons and what to do

Have you opened the freezer Atlantand instead of the usual cold there is a barely noticeable chill or even room temperature? The problem when the freezer is not freezingand the refrigerator compartment is working normally (or vice versa) occurs in two-chamber models Atlant more often than it seems. In 80% of cases, it is not compressor breakdowns that are to blame, but simple failures in the refrigerant circulation system or electronics. But how can we accurately determine the cause and is it possible to cope without a specialist?

In this article we will analyze all possible reasonswhy the freezer Atlant stopped freezing - from a clogged capillary pipeline to a faulty thermostat. You will learn how to check each node yourself, which manipulations are safe for a non-professional, and when it is better to immediately call a specialist. We will pay special attention models with the No Frost system to classic drip refrigerators - they have different “weak points”.

⚠️ Warning: If your refrigerator Atlant still under warranty, do not disassemble it yourself! Opening seals or damaging stickers will void the warranty. In this case, immediately contact the service center Atlant.

1. Checking obvious reasons: what to do first

Before committing complex breakdowns, eliminate simple failures that are often overlooked. Start with a visual inspection and basic checks:

• 🔌 Power and socket: Make sure the refrigerator is connected to a working outlet. Try turning on another device (for example, a table lamp). If the socket does not work, check the machine in the electrical panel.
• ❄️ Defrost mode: In models with mechanical control the defrosting mode could accidentally turn on (thermostat knob in position “0” or “OFF”). Check whether the defrost indicators on the panel are lit.
• 📉 Temperature mode: On electronic models (Atlant XM 6025-031, Atlant MHM 2835-080), check the settings. Perhaps someone changed the target freezer temperature to +5°C instead of −18°C.
• 🚪 Door closure tightness: Try closing the freezer door with force. If the sealing rubber is deformed or dirty, the cold will escape and the compressor will run idle.

If all these points are normal, but the freezer still does not freeze, proceed to diagnosing the internal systems. Pay attention to the sounds: is the compressor working (quiet humming), is there a fan noise (in models with No Frost), is there any suspicious hissing or gurgling in the tubes.

2. Clogged capillary tube: how to identify and eliminate

One ​​of the most common reasons why the freezer Atlant does not freeze, but the refrigerator compartment works - clogged capillary pipeline. This thin copper tube is responsible for supplying refrigerant (freon) to the freezer evaporator. Over time, particles of oil, moisture or refrigerant decomposition products accumulate in it, forming a plug.

Signs of a blockage:

• 🔥 The compressor runs without stopping or turns on for 2-3 minutes and turns off.
• ❄️ The refrigerator compartment freezes weakly, and the freezer does not cool at all.
• 💧 Condensation (or even ice) accumulates on the back wall of the refrigerator compartment.

For diagnostics you will need pressure manifold (it can be rented at service centers). Connect it to the service port on the compressor:

1. If the discharge pressure is higher than normal (for example, 15 bar instead of 8-10), and the suction is close to vacuum, this confirms the blockage.
2. If the pressure is normal, the problem is different (for example, a leak freon).

What to do if the blockage is confirmed?

To clean the capillary tube you will need:

1. Pump out freon from the system.

2. Blow the tube with nitrogen under a pressure of 10-15 bar (services use a special gun).

3. Replace the filter drier (required! The old filter is already clogged).

4. Fill the system with new freon (see the brand on the compressor nameplate, usually R134a or R600a).

⚠️ Without experience, it is not recommended to try to clean the tube yourself - there is a risk of damaging it or the system not being hermetically assembled.

⚠️ Attention: If your refrigerator Atlant was manufactured before 2015 year, it can use freon R12 or R22, which today are prohibited for free sale. In this case, repairs will be more expensive due to the need to completely replace the refrigerant with a modern analogue.

3. Freon leak: how to detect and what to do

Freon is the “blood” of the refrigeration system. If it becomes less than normal, the freezer stops freezing, and the compressor works in increased mode, trying to compensate for the lack of refrigerant. Causes of leakage:

• 🛠️ Mechanical damage: For example, when moving the refrigerator, the heating circuit of the door or evaporator tube could be damaged.
• 🕳️ Corrosion: Over time, aluminum evaporator tubes (especially in models without No Frost) may rot due to condensation.
• 🔧 Poor repair: If the refrigerator was previously repaired and the tubes were poorly sealed.

How to check:

1. Turn off the refrigerator and defrost it for 10-12 hours.
2. Turn on and listen: if the compressor starts, but after 5-10 seconds it turns off (triggered thermal relay), this is a sign of a leak.
3. Inspect the back wall: oil stains on the tubes or rust are a sure sign of a leak.

For accurate diagnosis use leak detector (electronic or ultrasonic) or soap solution (there will be bubbles in places of leakage). A freon leak cannot be eliminated without special equipment - you will need to solder the tubes, evacuate the system and charge it with new refrigerant.

4. Malfunction of the thermostat or electronic unit

The thermostat (in mechanical models) or the electronic control unit (in modern refrigerators) is responsible for turning the compressor on/off based on a signal from temperature sensors. If these components fail, the freezer may stop freezing, even if the compressor is working.

Signs of a thermostat failure:

• 🔄 The compressor does not turn on at all or works without stopping.
• 🌡️ When you turn the thermostat knob to the “MAX” position, it does not you can hear the relay click.
• 💡 The light inside the refrigerator is on, but the motor does not start.

To check the thermostat:

1. Remove the protective cover from the thermostat (usually it is located inside the refrigerator compartment, under the plastic panel).
2. Close the two wires going to the thermostat together (after turning off the refrigerator!).
3. If after this the compressor starts working, the thermostat is faulty and requires replacement.

In models with electronic control (Atlant MY 2401-080, Atlant XM 4626-100), the problem may lie in control unit or temperature sensors. For example, if the freezer sensor transmits incorrect data, the module will not turn on the compressor for cooling. For diagnostics you will need multimeter a sensor connection diagram (it can be found in the instructions for the model).

Disconnect the refrigerator from the mains

Remove the top cover (usually secured with 2-4 screws)

Visually check the board for blackened elements or swollen capacitors

Ring the sensors temperature (resistance should change when cooling/heating)-->

5. Problems with the fan in No Frost systems

Refrigerators Atlant with a system No Frost (for example Atlant MXM 2835-90, Atlant MY 2808-080) are equipped with a fan that evenly distributes cold air throughout the freezer and refrigerator compartments. If the fan breaks or freezes, the freezer stops freezing, and the refrigerator compartment may work intermittently.

Reasons for stopping the fan:

• ❄️ Icing of the blades: Due to a faulty defrost heater or defrost sensor, ice builds up on the evaporator, blocking the fan.
• 🔌 Motor failure: Bearing wear or breakage windings.
• 🕸️ Contamination: Dust, grease or foreign objects got on the blades.

To check:

1. Turn off the refrigerator and defrost it for 12-24 hours.
2. Remove the back panel of the freezer (in most models it is secured with latches or screws).
3. Try turning the fan blades by hand. If they do not rotate or you hear a grinding noise, the problem is in the motor.
4. Check for ice on the evaporator. If there is ice, it is faulty defrost heating element or defrost sensor.

⚠️ Attention: In refrigerators No Frost it is strictly forbidden to chip ice with a knife or other sharp objects! This can damage the evaporator tubes and lead to a freon leak. Use only a plastic scraper or hair dryer (at minimum temperature).

6. Compressor failure: when replacement is necessary

If all previous checks did not reveal problems, but the freezer still does not freeze, compressormay be to blame. This is the most serious and expensive breakdown. On average, the life of a compressor Atlant is 10-15 years, but if used incorrectly (frequent overloads, power surges), it may fail earlier.

Symptoms of malfunction compressor:

• 🔇 The compressor does not turn on at all (no hum, does not heat up).
• 🔥 The compressor works, but does not create pressure (the discharge tube does not heat up).
• 💥 Triggers thermal relay (the compressor turns on for 5-10 seconds and turns off with a click).
• 🛢️ Oil streaks are visible on the compressor housing (a sign of oil seal wear).

For diagnostics:

1. Check the resistance of the compressor windings with a multimeter:
   • The resistance between common point (C) and starting winding (S) should be ~20-30 Ohm.
   • Resistance between C and working winding (R) — ~10-15 Ohm.
   • The resistance between S and R is the sum of the two previous values (~30-45 Ohms).

If the resistance is 0 (short circuit) or ∞ (open), the compressor is faulty.

In most cases, the compressor is not repaired, but replaced with a new one. The cost of replacement (including labor and freon) will be 50-70% of the price of a new refrigerator. If your model Atlant is older than 10 years, it is more economically feasible to consider purchasing a new unit.

7. Other possible reasons and when to call a specialist

If you have exhausted all options, but the freezer Atlant still does not freeze, pay attention to less obvious reasons:

⚠️ Attention: If your refrigerator Atlant with the system No Frost was released after 2020, it can have inverter compressorinstalled in it. Such models are sensitive to voltage surges and require connection through a stabilizer. If the voltage is unstable, the inverter compressor may go into error and refuse to freeze.

When exactly you should call a technician:

• 🛠️ If the diagnostics showed a freon leak or a clogged capillary tube.
• 🔧 If the compressor or electronic control unit is faulty.
• ⚡ If the refrigerator produces an electric shock or the RCD is triggered when turned on.

FAQ: Frequently asked questions about the Atlant freezer not working

The freezer does not freeze, but the refrigerator compartment works fine. What's the matter?

This is a typical sign clogged capillary tube or faulty four-way valve (in two-compressor models). Also check if the “Vacation” mode (if your model has it) is turned on, in which the freezer turns off and the refrigerator compartment operates in a gentle mode.

The compressor runs without stopping, but The freezer is not freezing. What to do?

Most likely, Freon leak or Clogged filter drieroccurred. The compressor tries to compensate for the lack of refrigerant, but to no avail. Another option is a malfunction Thermostat (it does not turn off the compressor). Check the temperature of the condenser (grid on the back wall): if it is cold, this confirms a leak.

The freezer is covered with ice, but not freezing. What is the problem?

In models with No Frost this is a sign of a malfunction defrost systems: burned out defrost heater, failed defrost sensor or the timer. The ice blocks the fan and the cold stops flowing into the chamber. In conventional refrigerators, ice may indicate not tightly closed door or faulty seal.

Is it possible to fill freon into the Atlant refrigerator yourself?

Theoretically yes, but in practice it is risky without experience. For refueling you need:

• A vacuum pump (for pumping air out of the system).
• A pressure gauge manifold.
• A cylinder with freon (see the brand on the compressor nameplate).
• Knowing the exact amount of freon for your model.

An error in refilling (for example, an excess of freon) can lead to compressor failure. If you are not sure, it is better to contact the service.

How much does it cost to repair an Atlant freezer in the service?

The cost depends on the breakdown:

• Replacing the thermostat — 1 500–2 500 ₽.
• Repairing leaks + refilling freon — 3 500–6 000 ₽.
• Replacement of the compressor — 7 000–12 000 ₽.
• Repair of the electronic unit — 2 000–5 000 ₽.

In regions, prices may differ by 20-30%. The exact cost will be announced after diagnosis.