Have you noticed that the food in your LG stopped freezing as before, or the meat began to spoil faster than expected? This is a common problem that can occur even with reliable models from the Korean brand. Often the reason lies not in the breakdown of the compressor, but in a banal misadjustment of the temperature regime or violation of operating rules.
Before calling a technician, it is worth conducting independent diagnostics. Cooling system it could have gone wrong due to a power surge or prolonged opening of the door. In this article, we will look in detail at how to return the refrigerator to its previous cooling power, using standard means and simple technical techniques.
Ignoring the problem can lead to spoilage of food and failure of expensive components. Compressor, working idle, experiences overload. Therefore, it is important to quickly identify the cause of insufficient cooling and eliminate it, following proven algorithms.
Checking and adjusting the temperature regime
The first step should always be to check the current settings. In modern models LG with electronic control, the parameters may be lost. You need to check the control panel located on the door. If you have a mechanical model, the regulator is usually located inside the chamber.
The optimal temperature for the refrigerator compartment is +3...+4 degrees Celsius. If the readings are higher, the device simply cannot cope with the load or is set to “economy” mode. For a freezer, the norm is -18 degrees and below.
In some cases, users accidentally activate the “Eco” or “Vacation” mode, which specifically increases the temperature to save energy. Disable these features to return to normal performance.
⚠️ Warning: Abruptly changing the thermostat settings to minimum will not result in immediate cooling. The compressor takes time (2 to 4 hours) to stabilize the cycle.
If you have changed the settings, give the equipment time. Do not load the chamber with warm products during this period, otherwise it will break down and the sensors will show incorrect data. Air circulation door) air circulation will be broken and the sensors will show incorrect data.
Using the Turbo Cooling and Express Freeze functions
Many owners do not know about the existence of special accelerated modes cooling. The LG DoorCooling+ and InstaView rulers provide functions Turbo Cooling and Express Freeze. They switch the compressor and fans to maximum power.
Mode Turbo Cooling is intended for the refrigeration chamber. It is activated when loading a large number of products after the store. The system forcibly pumps in cold air, ignoring standard pauses in operation.
For the freezer, the function Express Freezeis used. It is indispensable if you need to quickly freeze berries, meat or semi-finished products, preserving their structure and vitamins. Activation is carried out through the control panel:
- 🧊 Press the button
TurboorExpress Freezeon the display. - ❄️ The indicator will light up, confirming the activation of the mode.
- ⏱️ Via After a few hours (usually 3-4), the mode will turn off automatically.
Using these functions is the fastest way to make the refrigerator cooler without interfering with the design. However, remember that in this mode power consumption increases and the noise level may be slightly higher than normal.
Diagnostics of the ventilation and air distribution system
Refrigerators LG with a system No Frost rely on proper air circulation. If the air flow is blocked, the cold will not reach the far corners and top shelves. Visually inspect the interior space.
The rear wall of the chamber is equipped with ventilation holes. They should not be covered with pots, bags or containers. Air should flow freely around all products. If you notice frost in only one corner, it means circulation is impaired..
Also check the ventilation ducts, which are often hidden behind decorative panels or located at the top of the chamber. In models with Multi Air Flow the cold is supplied through many holes around the perimeter. Their blockage leads to local overheating.
| Symptom | Possible cause | Solution |
|---|---|---|
| Heat on the top shelf | Upper air ducts are closed | Move the food away from the back wall |
| Frost on the back wall | Faulty defrost or sensor | Defrost 24 hours, check the sensor |
| Noise and slight cold | Icing of the fan | Complete defrosting, cleaning the drainage |
| The food at the door is warm | Poor fit of the seal | Replacement or restoration seal |
Regularly checking the free space around the ventilation holes is the key to stable operation No Frost system.
☑️ Checking ventilation
The influence of loading and arrangement of products on the cold
Paradoxically, a full refrigerator works worse. When the chamber is packed, the air cannot circulate. Heat transfer slows down, and the temperature sensors read incorrect data, believing that it is already cold enough inside.
However, an empty refrigerator does not work efficiently. Products with high heat capacity (water, meat, vegetables) act as cold accumulators. If the chamber is empty, each time the door is opened, cold air is quickly replaced by warm air, and the compressor has to work harder.
Try to fill the volume by about 60-70%. If you don't have enough food, you can put water bottles in the chamber. This will stabilize the temperature background and reduce the load on unit when the door is rarely opened.
⚠️ Attention: Never put hot or warm dishes inside. This causes a sharp jump in temperature and humidity, which leads to the formation of an ice crust on the evaporator and stopping cooling.
Distribute food evenly. It is better to place heavy and cold-resistant items closer to the source of cold (usually the back wall or bottom, depending on the model), and perishable items - in areas with a stable temperature.
Checking the tightness and condition of the seals
One of the common causes of loss of cold is a loose fit of the door. Rubber seal over time loses elasticity, cracks or becomes dirty. Warm, moist air constantly flows inside through the micro-slits.
Perform a simple test with a sheet of paper. Clamp the sheet with the door in different places around the perimeter. If the paper falls out easily or is pulled out without resistance, the seal is broken. In this case LG it will not be able to maintain the temperature.
Thorough washing of the seal with soapy water often helps. Grease and sticky residue prevent the rubber from adhering tightly to the metal. If the rubber has become stiff, you can try heating it with a hairdryer (carefully!) or lubricating it with silicone grease to restore elasticity.
In case of mechanical damage or severe deformation, only replacement will help. New seals for models LG are available in service centers and specialized spare parts stores.
How to properly wash the seal?
Use warm water with a mild detergent. Do not use abrasives, bleach or solvents - they destroy the rubber structure. After washing, wipe the seal dry and check the fit.
Technical reasons: when defrosting or repair is needed
If the settings are correct, ventilation is free, and the seal is intact, the problem may be technical. In No Frost systems, freezing of the evaporator often occurs. This happens when the drainage hole becomes clogged or the defrost heating element fails.
An ice coat on the evaporator (which is hidden behind the back panel) blocks the air flow. The fan is humming, but no cold is coming into the chamber. In this case, completely defrosting the refrigerator in the off state for 24 hours helps.
Other possible reasons:
- 🔧 Malfunction of thermostat or temperature sensor (incorrect readings).
- 🌀 Failure of the blower fan (air does not circulate).
- 📉 Freon leakage (the compressor runs constantly, but there is no cold).
If after 24 hours of defrosting and turning on the maximum mode the problem is not solved within 5-6 hours, it is likely that required master diagnostics. You cannot climb into the freon circuit yourself without equipment.
Frequently asked questions (FAQ)
Why does the LG refrigerator hum, but does not cool?
Most likely, the circulation fan has failed or the compressor circuit has broken. It is also possible that the evaporator may freeze, which blocks airflow. Defrosting or calling a technician is required.
What temperature should I set on the LG refrigerator?
For the refrigerator compartment, +3°C or +4°C is optimal. For the freezer - -18°C or -20°C. The "Min" or "Max" mode on mechanical regulators usually corresponds to extreme values.
How long does it take for an LG refrigerator to get cold after defrosting?
Primary cooling of an empty chamber to the specified parameters takes about 2 hours. Loading with products increases this time to 4-6 hours. It may take up to 24 hours for the temperature inside the food to completely stabilize.
Can you make the refrigerator colder by changing the settings yourself?
Yes, you can activate Turbo mode or lower the target temperature in the menu. However, if the equipment is working properly, it should already maintain the specified 3-4 degrees. Artificially lowering it to 0 degrees will only lead to freezing of vegetables and unnecessary load.