Have you noticed that the refrigerator LG is humming, the light inside is on, but the freezer has stopped freezing food? Or, even worse, in the main compartment, instead of the usual cold, there is room temperature? This problem is more common than it seems, and does not always require calling a technician. In 60% of cases, the malfunction is associated with a violation of the circulation of the refrigerant, an electronics failure, or a simple error in the settings.
In this article we will look 7 main reasonswhy the refrigerator LG works, but does not freeze - from simple (for example, a door that is not tightly closed) to complex (leakage) freon or compressor failure). You will learn how to diagnose the problem yourself, what manipulations can be done without the risk of aggravating the situation, and when it is better to immediately call a specialist. We will also dwell in detail on models with the No Frost system —their features often become a source of confusion for users.
We warn you right away: if your refrigerator LG belongs to series InstaView Door-in-Door or is equipped with an inverter compressor Linear Cooling, some recommendations may not be suitable. These models have a unique cooling architecture, and their repairs are best left to authorized service centers. For other cases, read on.
1. Check the obvious: 4 user mistakes
Before disassembling the refrigerator or looking for breakdowns, eliminate the human factor. In 25% of calls to service centers, the problem is solved literally “with one movement of the hand.” Here's what you need to do first:
- 🔌 Check the power supply. Yes, it sounds trivial, but sometimes a refrigerator LG can "half-work" at an unstable voltage. For example, the compressor starts, but does not gain the required power. Make sure that the plug is tightly inserted into the socket and that the socket itself is working properly (connect another device).
- 🚪 Is the door closed? In models LG with an opening sensor (for example, GR-B207 or GA-B459) even a small a gap of 2-3 mm can lead to the freezer turning off. Check the rubber seal - it should be elastic, without cracks.
- ❄️ Vacation or Eco mode. Some refrigerators LG have a function
Vacation(vacation), in which the freezer is turned off and the main compartment operates in a gentle mode. Look on the control panel to see if the corresponding indicator is lit. - ⚙️ Failure of temperature settings. After a power surge or power outage, the settings may be lost. Go to the menu (button
TemporSettings) and set the value for the freezer to-18°C, for the refrigerator -+4°C.
If after these checks the problem remains, we move on to more serious reasons. But first, answer the question:
2. Clogged capillary tube: how to recognize and what to do
One of the most insidious malfunctions is clogged capillary pipeline. In this case, the compressor runs non-stop, but there is no cold either in the freezer or in the main compartment. The reason is a blockage in the thin tube through which freon circulates. This can happen due to:
- 🔥 Overheating of the compressor (for example, if the refrigerator was next to the stove).
- 🛢️ Moisture getting into the system (if freon is charged incorrectly).
- 🧊 Corrosion of copper tubes (in old models LG until 2015).
How to check? Touch condenser (grid at the back of the refrigerator). If it evenly warm over the entire surface the system is working normally. If cold at the beginning and hot at the end - this is a sign of blockage. Another symptom: the compressor hums continuously, but does not turn off.
⚠️ Attention: Do not try to clean capillary tube yourself! This requires special equipment (vacuum pump, pressure gauges) and skills. If the system is not properly pumped, the compressor can be damaged.
What can be done before the technician arrives:
☑️ Preparing for repairs if the capillary is clogged
3. Freon leak: signs and consequences
Freon is the “blood” of the refrigeration system. If it leaks, the compressor runs idle and there is no cooling. Leakage can occur due to:
- 🔧 Mechanical damage to the tubes (for example, when moving the refrigerator).
- 🕳️ Microcracks in the solder (often found in models LG with a bottom freezer, for example, GB-B399).
- 🛠️ Corrosion of aluminum parts (in refrigerators older than 10 years).
Signs of a freon leak:
| Symptom | What's happening | Additional signs |
|---|---|---|
| The compressor works without stopping | Tries to “catch up” the cold, but there is not enough freon | The refrigerator body may vibrate more than usual |
| The condenser (grid at the back) is cold | Freon does not circulate, no heating | Normally, the grate should be warm |
| The freezer thaws, but the refrigerator compartment is warm | Freon is only enough for partial cooling | Puddles may appear under the refrigerator (if there is a leak in the evaporator) |
| Oil stains are visible on the tubes | Oil leaks out of the compressor along with freon | Especially noticeable at joints and solders |
If you suspect leakage do not turn on the refrigerator —this can damage the compressor. Contact a service center. The average cost of repairs (refilling freon + soldering) for models LG is from 5,000 to 12,000 rubles, depending on the complexity.
4. Compressor failure: when replacement is not possible.
The compressor is the heart of the refrigerator. If it breaks, there will be no cold in any compartment. In the models LG the following ones most often fail:
- 🔄 Inverter compressors (series Linear Cooling) - sensitive to voltage surges.
- 🔋 Conventional piston compressors —wear out over time (service life ~10–15 years).
Signs of a faulty compressor:
- 🔇 The compressor does not start at all (no hum, vibration).
- 🔥 The compressor housing is excessively hot (more than 90°C).
- ⚡ Protection is triggered (the refrigerator turns off 1-2 minutes after starting).
- 💡 An error appears on the panel
ER FForER CF(in models with a display).
How to check the compressor yourself:
- Unplug the refrigerator.
- Remove the back cover (you will need a Phillips screwdriver).
- Find the compressor (black “barrel” with tubes).
- Test the windings with a multimeter (the resistance between the contacts should be 20–50 Ohms).
⚠️ Attention: If the compressor hums but does not start, the problem may be in start relay (detail next to the compressor). Replacing it is cheaper - about 1,500–3,000 rubles.
The cost of a new compressor for LG is from 8,000 to 20,000 rubles (depending on the model). Replacement requires special equipment, so it is impossible to do it yourself.
5. Malfunction of the thermostat or temperature sensor
If the compressor turns on, but works intermittently (it starts, then turns off), the problem may lie in thermostat or temperature sensor. In refrigerators LG these parts are responsible for signaling the compressor about the need for cooling.
How to recognize a breakdown:
- 🌡️ Temperature in the cameras does not correspond to the installed one (for example, it was set
-18°C, but in reality-5°C). - 🔄 The compressor turns on for 5-10 seconds and turns off (the cycle is repeated constantly).
- 📛 An error flashes on the display
ER DS(malfunction sensor).
In models LG with the system Smart Diagnosis (for example, GA-B489 or GR-N309) you can perform self-diagnosis:
- Press and hold button
Smart Diagnosis(orEnergy Saver) 3 seconds. - Move the phone to the speaker on the front panel.
- Call the number
+82-2-1544-7799(service LG). - Follow voice instructions - the system will announce an error code.
If the problem is in the sensor, you can replace it yourself (the cost of the part is 800–2,500 rubles). It is more difficult to change the thermostat - you will need to solder the contacts.
Where to buy spare parts for LG?
It is better to order official spare parts from dealers LG or at service centers. An alternative is trusted online stores, for example, "Spare parts for refrigerators" or "RepairBytTech". data-i="191">Refrigerators
6. Problems with the No Frost system: what breaks most often
Refrigerators LG with technology No Frost (for example, GA-B429, GR-N309) have additional components that can fail:
- 🌀 Blowing fan. If it breaks, the cold does not enter the freezer.
- 🔥 Defrost heater. If it breaks, the evaporator freezes and the air does not circulate.
- 🧊 Defrost timer. If it freezes, the system “thinks” that defrosting is in progress, and the compressor does not turns on.
Symptoms of malfunction No Frost:
- ❄️ Ice forms in the freezer (despite the name of the technology).
- 💨 There is no flow of cold air (check if it is blowing from ventilation holes).
- 🔊 Extraneous sounds (grinding, crackling) when the fan is operating.
How to temporarily solve the problem:
- Unplug the refrigerator.
- Thaw it for 24 hours (open all doors).
- Remove ice and moisture from the evaporator (it is located behind the back wall of the freezer).
- Turn on the refrigerator and check the operation of the fan (should make noise in 5-10 minutes).
⚠️ Attention: If after defrosting the problem returns within a week - replacement of a faulty unit (fan, heater or timer) is required. In models LG c No Frost it is not recommended to delay repairs - freezing of the evaporator can lead to compressor failure.
7. Electronic control unit: when the refrigerator “fails”
Modern refrigerators LG are equipped with electronic boards that control all processes. If the control unit fails, the refrigerator can:
- 🔄 Turn on and off randomly.
- 📛 Show non-existent errors (for example,
ER IF). - 🌡️ Do not respond to temperature changes.
Causes of block failure:
- ⚡ Power surge (a common problem in houses with old wiring).
- 💧 Moisture ingress (for example, during defrosting).
- 🕰️ Natural wear and tear (after 7-10 years of operation).
How to check:
- Unplug the refrigerator for 10 minutes (reset settings).
- Turn it on again and see if the problem persists.
- If there is an error on the display, find its explanation in the instructions.
The cost of repairing the electronic unit is from 3,000 to 8,000 rubles. In some cases, it is cheaper to replace the entire board (the price of a new one is 5,000–12,000 rubles).
Frequently asked questions
Is it possible to fill the refrigerator with freon yourself?
No, this is dangerous and requires special equipment. pressure, and if refilled incorrectly, you can damage the compressor or get a chemical burn. In addition, modern refrigerators LG use freon R600a or R134a, which are explosive if leaked in a closed room.
Why does the LG refrigerator hum? but does not freeze?
This is a typical sign capillary tube clogged or freon leaks. The compressor is running, but there is no cooling because the refrigerant is not circulating. Also check if the compressor is overheating (if it is hot, the winding may have burned out). data-i="240">clogged capillary tube
How much does it cost to repair an LG refrigerator if it does not freeze?
The cost depends on the reason:
- Replacement of temperature sensor - 1 500–3,000 rub.
- Repair of freon leak — 5,000–12,000 rub.
- Replacement of the compressor — 8,000–20,000 rub.
- Repair of the electronic unit — 3,000–8,000 rub.
In service centers LG fixed prices apply, but the final price depends on the model and complexity of the work.
What to do if an LG refrigerator with No Frost does not freeze, but the fan works?
Most likely there is a problem c heater defrost or timer. If the heater breaks down, the evaporator freezes and cold air does not enter the chambers. Try defrosting the refrigerator for 24 hours. If the problem returns after turning it on, the heater needs to be replaced (cost: 2,000–4,000 rubles).
Can an LG refrigerator not freeze due to a power surge?
Yes, especially if you have a model with an electronic control or an inverter compressor. A power surge can damage:
- The board. controls.
- Compressor (if there was a strong drop).
- Temperature sensors.
To avoid this, connect the refrigerator via voltage stabilizer or surge protector.