The refrigerator does not freeze: what is broken and how to fix it

Have you opened the refrigerator, but the food is warm, there is condensation on the walls, and the motor is running non-stop or completely silent? These are classic signs that the unit stopped freezing. The reasons can be either trivial (forgot to close the door) or critical (compressor failure). In 70% of cases, the problem can be fixed on your own - without calling a technician and costly repairs.

In this article we will analyze all possible malfunctionsthe reasons why the refrigerator does not cool - from a clogged capillary tube to a broken thermostat. You will learn how to diagnose by external signs, what tools are needed for repairs, and when it is really worth contacting a service center. We will pay special attention to models No Frost, Atlant, Indesit and Samsung, since their designs have key differences.

Before start repair unplug the refrigerator for 10-15 minutes - this will reset possible electronic failures and allow you to more accurately determine the cause of the breakdown. If after turning on the problem remains, read on.

1. First signs: how to understand that the refrigerator is not freezing

The absence of cold is not always noticeable immediately. Sometimes the refrigerator continues to hum, and the temperature in the chambers gradually rises. Pay attention to these signals:

• 🔊 The motor runs without stopping —the compressor is trying to compensate for the loss of cold, but cannot cope.
• 💧 Water accumulates on the back wall or under the vegetable drawers —a sign of thawing.
• ❄️ The ice in the freezer melts, and frost appears on the food — even if the freezer still holds the temperature, the refrigerator compartment no longer cools.
• 🌡️ The temperature in the chambers is above +5°C (check with a thermometer).

If at least one of these signs is present, which means the cooling system has failed. In models with No Frost (for example, Samsung RB30J3000 or LG GA-B489YDQL), the problem is often related to the fan or defrost heater. In refrigerators with a drip system (Atlant XM-4021, Indesit BIAA 13), clogged drainage or a freon leak may be to blame.

2. Simple reasons: what to check first

Before disassembling the refrigerator, exclude obvious problems that do not require repair:

• 🚪 Door closure tightness. Test with a piece of paper: if it pulls out easily when the door is closed, the seal is worn or deformed. In models Bosch KAN58A55 i Liebherr CPes 4066 this is a common problem due to magnetic seals.
• 🔌 Network voltage. The refrigerator may not freeze due to voltage drops below 190 V. Use a stabilizer if your network has frequent surges.
• 🧊 Vacation or Eco mode. In some refrigerators (for example Electrolux ENN 2853), these modes turn off cooling in the refrigerator compartment, leaving only the freezer to work.
• 🔄 Electronics failure. Try resetting the settings to factory settings (instructions are usually in the manual for the model).

If everything is in order, but the refrigerator still does not freeze, proceed to diagnostics of components.

3. Compressor diagnostics: why it doesn’t start or overheats

The compressor is the “heart” of the refrigerator. If it doesn't work, there will be no cooling. Here's how to check its status:

1. Listen to the sound. Normal compressor operation is a uniform hum with short pauses. If you hear clicks, grinding noises, or the motor does not turn on at all, this is a sign of a breakdown.
2. Touch the compressor housing (it is located at the back at the bottom). If it scalding hot, this may indicate an interturn short circuit or overload.
3. Check the start relay. It is located next to the compressor. If the relay is faulty, the compressor will not start, but a click will be heard.

In models Atlant i Stinol the start protection relay often fails RTK-X or DHR. You can replace it yourself - the cost of the part does not exceed 1 000 ₽. To check the relay you will need a multimeter:

If the compressor hums but does not freeze, it is possible freon leak or clogged capillary tube. In this case, you will need professional equipment for refilling the refrigerant.

How to test a compressor without a multimeter?

If you don’t have a tester at hand, you can temporarily connect a known working relay from another refrigerator (matching the model). If the compressor starts working, the problem is in the relay; if not, it’s in the compressor itself or the electrical circuit.

4. Problems with the thermostat and temperature sensors

The thermostat (or thermostat) is responsible for turning the compressor on/off depending on the temperature. If it breaks, the refrigerator either does not freeze at all or works without stopping. In modern models (LG GA-B429SLGL, Samsung RB-30 J3200), instead of a mechanical thermostat, electronic sensors are used, which can also fail.

Signs of a thermostat malfunction:

• 🔄 The refrigerator does not turn off, the compressor runs constantly.
• ❄️ Too much ice forms in the freezer (if the thermostat is “frozen” and does not turn off the cooling).
• 🌡️ The temperature in the chambers does not correspond to the set values (for example, at +4°C the display actually shows +12°C).

To check thermostat:

1. Disconnect the refrigerator from the network.
2. Remove the thermostat protective casing (usually it is located inside the refrigerator compartment or on the back wall).
3. Find two wires going to the thermostat and short them together (after photographing the circuit connection!).
4. Turn on the refrigerator. If the compressor works, the thermostat is faulty.

In refrigerators No Frost they often break defrost sensors (defroster). They are checked with a multimeter in resistance measurement mode. At room temperature, the sensor resistance should be within 4–6 kOhm.

5. Freon leak: how to recognize and what to do

Freon is a refrigerant that circulates through the system and provides cooling. If a leak occurs, the refrigerator stops freezing, but the compressor continues to work (sometimes with increased load). The main causes of leakage:

• 🔧 Mechanical damage pipes (for example, when moving the refrigerator).
• 🕳️ Corrosion aluminum or copper tubes (a common problem in older models ZIL i Minsk).
• 🔥 Overheating of the compressor, leading to depressurization of the system.

How to determine a leak:

1. Inspect the back wall of the refrigerator. If there are oil stains on the tubes or soldering areas, this is a sign of a leak (freon comes out along with the oil).
2. Touch the condenser (the grille on the back). cold, but the compressor is running - there is no freon in the system.
3. Listen to the sound of the compressor. If there is a leak, it will work without stopping, but the noise will become quieter (there is no pressure in the system).

It is almost impossible to eliminate the leak yourself - you will need:

• Find the location of the leak (using a leak detector or soap solution).
• Solder the tube or replace the damaged area.
• Evacuate the system and fill with new freon (special equipment is needed for this).

The cost of refilling freon in the service is from 2 500 ₽ to 5 000 ₽ depending on the model. In refrigerators No Frost (for example Beko CNK 335120), a leak often occurs in the freezer evaporator - it has to be completely replaced.

6. Capillary tube clogged: symptoms and cleaning methods

The capillary tube is a thin channel through which freon enters the evaporator. Over time, it can become clogged with oil decomposition products, moisture or small particles. Symptoms. blockage:

• ❄️ The freezer works, but the refrigerator compartment does not (or does not cool well).
• 🔄 The compressor turns on for 5-10 seconds and turns off (overheating protection is triggered).
• 🌡️ Condenser (the grill at the back) heats up unevenly: one part is hot, the other is cold.

To clean the capillary tube you will need:

1. Turn off the refrigerator and bleed off the freon (this should be done by a master!).
2. Disconnect the capillary tube from filter drier.
3. Purge the tube with nitrogen under pressure 10–15 atm.
4. Replace the filter drier (it always changes when clogged).
5. Evacuate the system and fill in a new one freon.

At home, you can clean the tube only if the blockage is not severe - with the help of hydraulic pump (for example, for bicycle tubes). refrigerators

7. No Frost system failures: fan, heater, timer

Refrigerators with a system No Frost (Samsung RL-44 QEBS, LG GA-B409SLGL) have additional components that can fail:

In models No Frost with electronic control (for example, Bosch KGE39XW2AR), breakdowns are often associated with control boardIt is better to entrust its diagnosis and repair to a service center, since special equipment is required for it. firmware.

What to do if the No Frost fan is frozen?

Turn off the refrigerator for 12-24 hours so that the ice melts. After turning on, check the operation of the fan. If the problem persists, look for the cause in the heater or defrosting timer.

8. When to call a technician: 5 cases when amateur activity is dangerous

Not all breakdowns can be fixed on your own. Contact the service center if:

• ⚡ Problems with electrical: the socket sparks, the refrigerator is electrocuted, the power supply is burned out.
• 🔧 Freon refilling is required: without special equipment this cannot be done.
• 🖥️ The electronic board is broken (in models with a display, for example, Samsung RF23HCEDBSR).
• 🔥 The compressor has burned out: replace it requires soldering of tubes and evacuation of the system.
• 🛠️ The evaporator or condenser needs to be replaced (for example, in refrigerators Liebherr with two compressors).

Average cost of repairs in the service:

• Replacement of the compressor - 5 000–12 000 ₽.
• Elimination of freon leaks - 3 000–6 000 ₽.
• Repair of the control board - 2 500–8 000 ₽.
• Replacement of the fan No Frost — 1 500–3 000 ₽.

Before the technician's visit do not turn on the refrigerator - this may aggravate the breakdown. Also, prepare information about the model (located on the sticker inside the chamber or on the back) and describe the symptoms in as much detail as possible.

FAQ: Frequently asked questions about refrigerator malfunctions

The refrigerator works, but does not freeze - what to do first?

Check:

1. The tightness of the door closure (perhaps the seal is in the way or dishes).
2. Temperature mode (the "Vacation" mode may have been accidentally turned on).
3. Voltage in the socket (should be 220–230 V).
4. Fan operation (in models No Frost).

If everything is in order, but the refrigerator does not freeze, check the compressor and thermostat.

Can you repair the refrigerator yourself if it is under warranty?

No. Any independent intervention (even replacing a light bulb) may result in a refusal of warranty repair.

How much does it cost to refill freon in a refrigerator?

The cost depends on the model and type of freon:

• Refilling R-134a (modern models) - 2 500–4 000 ₽.
• Refilling R-600a (isobutane, used in Atlant, Indesit) — 3 000–5 000 ₽.
• Refilling with leak elimination - 4 500–8 000 ₽.

Prices are relevant for Moscow and the region. In regions, the cost may differ by 15–20%.

Why does the No Frost refrigerator not freeze, but the freezer works?

Probable reasons:

• Clogging air duct between the chambers (check if it is clogged with ice or food).
• Failure fanwhich drives cold air from the freezer to the refrigerator compartment.
• Fault dampers (in models with electronic control, for example, Samsung RB-37 J5240).

For diagnostics, turn off the refrigerator for 10 hours to defrost possible ice in the air duct.

How to extend the life of the refrigerator after repair?

Follow these recommendations:

• Defrost the refrigerator every 6 months (even if it has No Frost).
• Do not put hot foods in the chamber.
• Check the door seal - it should be clean and elastic.
• Use voltage stabilizerif your network has frequent surges.
• Do not overload the freezer - this increases the load on the compressor.