The refrigerator works, but does not freeze: causes of failure and repair methods

Have you opened the refrigerator, and the food in the freezer has melted, although the motor is humming as usual? The situation is familiar to many: the refrigerator turns on, the light is on, the compressor is running, but it stopped freezing. What's wrong - a broken thermostat, a freon leak, or a simple error in the settings? Don’t rush to call a technician: in 60% of cases, the problem can be fixed on your own in 10-30 minutes.

In this article we will look all possible reasonswhy the refrigerator does not freeze when the compressor is running - from the trivial (forgot to close the door) to serious (failure of the capillary tube). You will learn how to diagnose a malfunction using indirect signs, what manipulations you can do yourself, and when exactly it’s time to call the service center. We will also provide step-by-step instructions for popular models Atlant, Indesit, Samsung and LG.

⚠️ Important: If your refrigerator has system No Frost, the diagnostic algorithm will differ from models with drip defrosting. This is discussed in a separate section of the article.

1. Primary diagnostics: what to check first

Before disassembling the refrigerator or looking for a technician, make sure that the problem does not lie in the little things. Here 5-point checklistthat are worth checking right away:

If everything is in order, but the refrigerator still does not freeze, proceed to in-depth diagnostics. Start with thermostat - this is the most vulnerable element in the chain. In models with mechanical control (Biryusa, Snaige), it often fails due to power surges. In electronic refrigerators (Samsung RL Series, LG DoorCooling+), the culprit may be temperature sensor or the control board.

Pay attention to operation sounds compressor:

• 🔊 Buzzes constantly without stopping → high probability of freon leakage or capillary tube blockage.
• 🔊 Clicks and turns off after 5-10 seconds → faulty start-up relay or thermostat.
• 🔊 Works intermittently, but the freezer does not cool → problem with the fan (for No Frost) or clogged drainage system.

Critical sign: if the compressor is hot to the touch, but the refrigerator does not freeze, there is a 90% chance of a refrigerant leak or compressor failure. In this case, independent repair is impossible: a specialist with equipment for refilling freon is required.

2. Thermostat (temperature regulator): how to check and replace

The thermostat is the “brain” of the refrigerator that regulates the temperature. If it is broken, the compressor may run idle without receiving a cooling command. Symptoms of malfunction:

• 🌡️ The compressor turns on for 1-2 minutes and immediately turns off.
• 🌡️ The refrigerator compartment is too warm, and freezer - normal (or vice versa).
• 🌡️ When you turn the thermostat knob, there is no characteristic click.

To check the thermostat, do the following:

1. Disconnect the refrigerator from the mains.
2. Remove the protective cover (in mechanical models it is usually located inside camera, next to the lamp).
3. Disconnect the wires from the thermostat (take a photo of the connection diagram!).
4. Close the two thermostat contacts together (usually these are terminals 3 i 4).
5. Turn on the refrigerator. If the compressor works, the thermostat faulty.

🔧 How to replace the thermostat yourself:

1. Buy a similar model of thermostat (for Atlant suitable K-59, for Indesit — 25T65).
2. Install a new thermostat by connecting the wires diagram.
3. Adjust the temperature with the knob (in mechanical models).

⚠️ Attention: In refrigerators with electronic control (Samsung RB Series, LG InstaView) The thermostat is integrated into the board. The replacement must be carried out by a specialist!

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

Freon is a refrigerant that circulates through the system and provides cooling. If it leaks, the compressor runs idle, driving. air. Causes of leakage:

• 🛠️ Mechanical damage to the circuit (for example, when moving the refrigerator).
• 🛠️ Corrosion of tubes (relevant for older models over 10 years old).
• 🛠️ Defective soldering at the factory (found in budget models Beko, Vestfrost).

How to understand that freon is to blame?

🚫 Fix the leak yourself impossible! Required:

1. Find the location of the leak (using a leak detector or soap solution).
2. Repair the damage (solder the tube).
3. Evacuate the system and fill in new freon.

Repair cost: from 3,500 up to 8,000 rubles (depending on the model and volume of freon).

4. Problems with the No Frost system: fan, heater, timer

If you have a refrigerator with a system No Frost (Samsung No Frost, LG Total No Frost, Bosch VitaFresh, the problem may lie in three components:

1. Fan — it drives cold air through the chambers. iced up or burned out, the freezer does not work.
2. Defrost heater — melts the ice on the evaporator. If it breaks, ice forms, blocking the air ducts.
3. Defrost timer — controls defrosting cycles. If broken, the heater does not turn on.

🔍 How to diagnose:

• 🌀 Open the freezer and listen: if you can’t hear the fan working, it is either frozen or burned out.
• 🌀 Shine a flashlight on the back wall of the freezer: if there is ice there, the heater or timer is not working.
• 🌀 Check whether the fan rotates when the door is open (in some models it only turns on when the door is closed).

🛠️ How to fix:

• 🧊 The fan is frozen: defrost the refrigerator for 12-24 hours, then check the operation.
• 🔥 The heater is burned out: replacement is required (the part costs 1,500–3,000 rubles).
• ⏱️ Broken timer: in mechanical models you can replace it yourself (price - 800–1,500 rubles).

What will happen if you don’t fix No Frost?

If you ignore the malfunction, ice will block the air ducts and the refrigerator will stop completely freeze. In the worst case, the compressor will burn out from overload.

⚠️ Attention: In refrigerators Samsung with a system Twin Cooling Plus (two compressors), the problem may be in one of the circuits. It is better to entrust diagnostics to a specialist - independent repairs can lead to failure of the second compressor.

5. Clogged capillary tube or filter drier

The capillary tube is a thin channel through which freon enters the evaporator. If it becomes clogged (due to moisture, oil or debris), the refrigerant does not circulate and the refrigerator does not freeze. Signs of a clog:

• 🔧 The compressor runs non-stop, but the condenser (grid at the back) is cold.
• 🔧 The freezer is weak it's freezing, but the refrigerator compartment is warm.
• 🔧 There is no icing on the tubes (if there is a freon leak, there is usually frost).

🔧 How to check the blockage:

1. Turn off the refrigerator and turn it with the back wall towards you.
2. Find the capillary tube (a thin copper tube running from the compressor to the evaporator).
3. Touch it carefully: if it is hot at the inlet and cold at the outlet, the blockage is confirmed.

🛠️ How to fix:

• 🔨 Blow out the tube (special equipment required - do not try to do this with your mouth!).
• 🔨 Replace the filter drier (cost parts - 500–1,200 rubles).
• 🔨 Fill in new freon (required after cleaning the system).

⚠️ Attention: If you are not a master, do not try to clean the tube yourself! Incorrect bleeding can damage the compressor or circuit.

6. Compressor malfunction: how to determine and what to do

The compressor is the “heart” of the refrigerator. If it is broken, the refrigerator may hum, but not freeze. Signs of a compressor breakdown:

• 🔩 The compressor turns on for 1-2 seconds and turns off with a click.
• 🔩 Compressor housing gets very hot (more than 70°C).
• 🔩 The refrigerator does not freeze in any of the chambers.
• 🔩 Extraneous sounds are heard: knocking, grinding, vibration.

🔧 How to check the compressor:

1. Disconnect the refrigerator from the network.
2. Remove the compressor protective casing (usually it is located at the bottom rear).
3. Check the resistance of the windings with a multimeter:
   • Between the terminals C and S → should be 20-40 Ohm.
   • Between C and R → 10-20 Ohm.
   • Between S and R → the sum of the two previous values.

If the resistance is equal to 0 (short circuit) or ∞ (open) - the compressor is faulty.

🛠️ What to do:

• 🔧 Replacing the compressor is the only option. Cost of a new compressor: from 4,000 to 12,000 rubles (depending on the model).
• 🔧 Changing the oil - sometimes helps with interturn short circuits (but this is a temporary solution).

7. Additional reasons: from the control board to the drainage system

If all of the above components are in order, the problem may lie in less obvious places:

📌 Control board (electronic unit):

• 🖥️ In refrigerators LG, Samsung, Bosh with electronic the display often burns out board elements due to power surges.
• 🖥️ Signs: the display blinks, shows errors (E1, FF), the compressor does not turn on.
• 🖥️ Solution: flashing or replacing the board (cost - 3,000–7 000 rubles).

📌 Drainage system:

• 💧 If the drainage hole is clogged, water accumulates at the bottom of the chamber and freezes, blocking work.
• 💧 Signs: puddles under vegetable boxes, ice in the drainage channel.
• 💧 Solution: clean the hole with wire or rinse with warm water.

📌 Door seal:

• 🚪 If the rubber is torn or deformed, warm air enters the chamber and the compressor cannot cope.
• 🚪 Signs: condensation on the walls, ice on the seal.
• 🚪 Solution: replace the seal (cost - 1,000–2,500 rubles).

📌 Temperature sensor:

• 🌡️ In electronic models, the sensor may give incorrect readings, which is why the compressor does not turn on.
• 🌡️ Signs: the display shows the wrong temperature (for example, -10°C, although in the chamber +15°C).
• 🌡️ Solution: replacing the sensor (cost - 500–1,500 rubles).

FAQ: Frequently asked questions about refrigerators that do not freeze

🔹 Why does the refrigerator hum, but does not freeze, and the light inside is on?

This is a sign of a broken thermostat or compressor. If the compressor turns on for a few seconds and turns off, it’s either the compressor itself. If the compressor runs constantly, but does not freeze, it’s most likely a leak. freon start protection relay or the compressor itself. If the compressor runs constantly, but does not freeze, most likely freon leak or capillary tube clogged.

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

No. To fill freon you need special equipment (vacuum pump, pressure gauges, a refrigerant bottle) and skills. to circuit break or compressor breakdown. Contact a specialist.

🔹 No Frost refrigerator does not freeze, and the fan does not spin What. what to do?

Most likely, the fan is frozen or burned out. Turn off the refrigerator for 12 hours so that the ice melts. If after turning on the fan does not work, replacement is required. Also check the defrost heater. data-i="262">timer And timer.

🔹 Why does the freezer work, but the refrigerator does not?

This may be caused by:

• 🔸 Clogged capillary tube refrigerator compartment (in double-circuit models).
• 🔸 Breakage fan (in No Frost).
• 🔸 Malfunction clogged drainage (water freezes and blocks circulation).
• 🔸 Failure of temperature sensor fridge compartment.

🔹 How much does it cost to repair if the refrigerator does not freeze?

The cost depends on the breakdown:

• 💰 Replacement of the thermostat - 1,500–3,000 rubles.
• 💰 Elimination of freon leakage + refilling — RUB 3,500–8,000
• 💰 Compressor replacement — RUB 5,000–12,000
• 💰 Control board repair — RUB 3,000–7,000
• 💰 Cleaning capillary tube - 2,000–4,000 rubles.

If the refrigerator is more than 10 years old, sometimes it is cheaper to buy a new one than to repair the old one.