Owners of modern equipment are often faced with the myth that systems No Frost do not require defrosting at all. In fact, despite the presence of automatic defrosting of the evaporator, ice may accumulate inside the chamber, an unpleasant odor may appear, or the tightness of the seals may be compromised. Sooner or later, every user is faced with the question of how to defrost an LG two-chamber know frost refrigerator without damaging complex electronic components.
The complete shutdown and cleaning procedure is necessary at least once a year to maintain hygiene standards and energy efficiency. Ignoring this rule can lead to drainage holes becoming clogged and ventilation being overloaded. In this article, we will analyze in detail a safe algorithm of actions that will help you avoid expensive repairs of the compressor or control board.
Modern models LG equipped with inverter compressors and a complex system of sensors, so the “just unplug” approach here requires clarification of details. Improper defrosting, for example, using a hairdryer or hot water, can instantly damage the plastic elements and disrupt the geometry of the chambers. Let's take a look at a professional approach to servicing your equipment.
Why ice forms in the No Frost system
Many users are surprised to find ice in a refrigerator that is positioned as “no frost.” The system No Frost really prevents the formation of ice on products and chamber walls, but this does not mean that the water disappears without a trace. Moisture condenses on a hidden evaporator, which is located behind the rear panel, and periodically thaws thanks to the built-in heating element.
However, if you notice a significant amount of ice, this may indicate a malfunction in the system. Most often, the problem lies in a clogged drainage channel, through which water should go into a special tray above the compressor. If the channel is clogged with crumbs or mold, the water freezes inside the housing, gradually turning into a huge block of ice.
⚠️ Attention: If you see ice accumulating unevenly or only in one corner, this may indicate a faulty defrost sensor or fan, and not simply a need for hygienic cleaning.
Another reason may be a violation of the door seal. When warm, humid air from a room constantly gets inside, the ventilation system does not have time to remove all the moisture. As a result, excess water freezes in hard-to-reach places, blocking air flow. In such cases, simple defrosting will only give a temporary effect without eliminating the root cause.
Preparing for the defrosting procedure
Before taking active steps, you need to properly prepare the equipment and free up space. You should not start the process hastily, as it will take from 4 to 8 hours depending on the amount of ice. The first step will be to empty the chambers of products, which are recommended to be moved to a cool place in advance or to use thermal containers with ice.
Next, you need to remove all removable elements: shelves, drawers, egg trays and bottle holders. Plastic parts become brittle at low temperatures, so you need to remove them carefully, without sudden movements. Glass can also crack due to temperature changes if you immediately start washing it with hot water.
☑️ Preparation checklist
It is important to provide access to the rear of the unit, since this is where the compressor and condensate collection tray are located. Move the refrigerator away from the wall at least 50-70 cm. This will allow you to move freely around the device and control the process of water drainage. Prepare several dry rags and containers with low sides to collect liquid.
Correct shutdown and defrosting algorithm
The safest way to defrost a refrigerator LG is natural defrosting. After you have taken out the food and removed the shelves, you must unplug the device from the power supply. Simply remove the plug from the socket; the use of intermediate extension cords at this point is not recommended to avoid short circuits when in contact with water.
Leave the doors of the refrigerator and freezer compartments wide open. This will provide an influx of warm air and speed up the process of ice melting. On average, it takes about 5-6 hours for complete thawing, but if the ice layer is very thick, the time may increase. Do not try to speed up the process artificially by using hair dryers or heaters.
Why can’t you use a hair dryer or hot water?
Using a hair dryer creates a sharp temperature difference, which can lead to microcracks in the plastic case and damage to the evaporator tubes. Hot water is also dangerous: it can melt plastic and damage seals, and the sudden expansion of metal will cause deformation of the cooling system. The natural process, although longer, guarantees the safety of all components of the unit.
During the melting process, water will flow to the bottom of the chambers. To avoid a flood in the kitchen, regularly scoop up water with a ladle or blot it with rags. Pay special attention to the area near the rubber seals, where moisture most often stagnates. If water stops flowing into the drainage, an ice plug may have formed, which will have to be carefully cleaned after the main body of ice has completely melted.
Cleaning the drainage system and removing contaminants
When the main ice has melted, a critical stage begins - cleaning the drainage hole. It is usually located on the back wall of the refrigerator compartment. This is where dirt most often accumulates, causing water stagnation. For cleaning, you can use a special flexible brush, which is often included, or a regular cotton swab.
Carefully insert the tool into the hole and make rotational movements, trying not to damage the inner walls of the canal. After mechanical cleaning, it is recommended to rinse the drainage with warm water. To do this, you can use a medical syringe without a needle or a small watering can. Water should flow freely into the tray above the compressor and evaporate.
⚠️ Attention: It is strictly forbidden to use sharp metal objects (knives, knitting needles, wire) to clean the drainage. You can easily puncture the thin evaporator tube, which will lead to a freon leak and complex, expensive repairs.
In parallel with cleaning the drainage, all internal surfaces should be washed. Use a soft sponge and a neutral detergent, such as baking soda or a refrigerator cleaner. Aggressive chemistry, abrasive powders and chlorine-containing substances can damage the coating of the chambers and leave a persistent chemical odor, which is then transferred to the products.
Table: Comparison of defrosting methods
There are several approaches to defrosting, but not all of them are equally useful for technology LG. Below is a comparison of different methods so that you understand the risks and benefits of each.
| Method | Execution time | Technical safety | Recommendation |
|---|---|---|---|
| Natural defrosting | 4-8 hours | High | Recommended |
| Use of a hair dryer | 30-60 minutes | Low (risk cracks) | Not recommended |
| Hot water (ladles) | 1-2 hours | Medium (risk for plastic) | With caution |
| Mechanical chipping | Depends on ice | Critical low | Prohibited |
As can be seen from the table, the natural method takes the most time, but it is the only one that guarantees no damage. Attempts to save time often result in loss of warranty and the need to replace expensive components. Remember that the plastic in modern refrigerators is quite thin and sensitive to thermal shock.
Starting the refrigerator after defrosting
After all surfaces are washed and wiped dry, do not rush to immediately load the products. First you need to install all the shelves and drawers in their places. Make sure they are securely fastened and do not wobble. Then close the doors and turn on the refrigerator.
It is important to let the unit run idle for 2-3 hours. During this time, it will reach the required temperature, and the automation will stabilize the operation of the compressor. Only after the cold has established inside can you gradually load in the food. A sudden load with warm products will force the compressor to work in an increased mode, which is harmful immediately after inactivity.
In the first hours of operation, a more active hum of the compressor may be observed - this is normal for inverter units models LG after a long period of inactivity. The system enters a working rhythm. After a few hours the sound should become quieter and more uniform. If the noise persists or vibration appears, it is worth checking the horizontal installation of the device.
Frequent errors during maintenance
Even experienced users sometimes make mistakes that can shorten the life of the equipment. One of the most common is an attempt to speed up the process using chemical defrosters or boiling water. Such actions lead to deformation of the plastic panels and damage to the seals, which lose their elasticity.
Another mistake is turning on the refrigerator immediately after washing, without waiting for the internal surfaces to completely dry. Residual moisture may get onto the electrical contacts or into the fan area, causing a short circuit. Always wipe the chamber thoroughly with a dry microfiber cloth.
⚠️ Warning: Never turn on the refrigerator if you smell moisture in the electrical connection area or see drops of water on the rear wall outside. Let the device dry completely.
Also, users often forget to check the installation level. After you move a heavy cleaning unit, it may end up crooked. This leads to the door not closing properly and the rapid formation of ice in the future. Use a building level or simply check that the door closes by itself when slightly opened.
Prevention of ice formation
To be less likely to encounter the need for emergency defrosting in the future, follow simple operating rules. Do not put hot foods in the refrigerator - they should cool to room temperature. Excess moisture from a hot product will instantly turn into condensation and then into ice.
Monitor the condition of the sealing gum. Wipe it down periodically and check for cracks or built-up debris. If the rubber does not fit tightly, warm air constantly enters the chamber, and the system No Frost cannot cope with the volume of moisture. In such cases, it may be necessary to replace the seal.
How to check the tightness of the door?
A simple test with a sheet of paper: clamp a sheet of paper between the door and the body around the perimeter. If the paper comes out easily without resistance, it means that the seal does not fit tightly in this place and requires adjustment or replacement.
Check the drainage hole regularly, even if there is no visible ice. It is enough to drop a little warm water there once a month to make sure that it flows freely. This will take a minute, but will save you from a massive defrost in the future. Following these simple recommendations will allow your refrigerator to work flawlessly for many years. LG work flawlessly for many years.
How long should it take to defrost an LG refrigerator?
For complete and safe thawing of a two-chamber LG No Frost refrigerator, it takes from 4 to 8 hours. The exact time depends on the room temperature and the thickness of the ice formed. Do not try to reduce this time by artificial methods, as this may damage the equipment.
Is it possible to defrost an LG refrigerator without unplugging it?
No, defrosting a refrigerator connected to the mains is strictly prohibited. This is a safety hazard and may result in electric shock if water comes into contact with the wiring. In addition, the compressor will try to compensate for the heat, which will lead to its overheating and breakdown.
What to do if after defrosting the refrigerator does not freeze?
If after turning on the refrigerator works, but does not freeze, let it run idle for another 3-4 hours. The system may need time to stabilize. If the temperature does not drop after 6-8 hours, check the vents for food blockages and make sure the door closes tightly. If the problem persists, diagnostics by a specialist is required.
Is it necessary to lubricate the seal after defrosting?
Yes, after each defrosting and thorough drying, it is recommended to lubricate the sealing gum with a special silicone-based product or glycerin. This will preserve the elasticity of the rubber, prevent it from drying out and cracking, ensuring a tight fit of the door.