Many owners of modern household appliances mistakenly believe that systems No Frost completely eliminate the need to defrost the unit. This dangerous misconception can lead to the failure of expensive components. Even in models LG with advanced air circulation technologies, an ice crust gradually forms on the evaporator, which the defrosting system does not have time to remove naturally.
If you notice that the unit has begun to hold the temperature worse or frost has appeared on the walls of the chambers, then it is time for forced defrosting. Ignoring this process often becomes the reason that compressor begins to work with increased load, trying to compensate for the damaged thermal insulation with an ice shell.
The procedure for restoring the functionality of your LG requires adherence to a strict sequence of actions. Unlike older models with a crying evaporator, this one has its own nuances associated with electronic control and a complex air duct system. Below we will analyze each stage in detail so that you can safely return the equipment to operation.
The most important rule that you need to learn before starting work is to completely de-energize the device. Any tampering with internal components while voltage is present may result in a short circuit or electric shock. Unplug from the outlet and make sure that the power is completely turned off. electronics voltage may result in a short circuit or electric shock. Unplug from the outlet and make sure that the power is completely turned off.
⚠️ Attention: Do not try to speed up the defrosting process by using a hair dryer, heater or hot water. A sudden temperature change can cause cracks in the plastic housing of the evaporator or damage heat exchangerwhich will lead to freon leakage.
Preparation for the defrosting procedure
Before you begin the process of thawing the ice, you need to empty the refrigerator and freezer compartments of the contents. It is best to transfer the products into bowls with ice or thermal bags so that they do not deteriorate during the downtime of the equipment. It is also recommended that you remove all removable shelves and drawers.
Glass shelves and plastic containers should be washed with warm water and a mild detergent. While defrosting is in progress, they will have time to dry. This is the ideal time for carrying out hygienic cleaning the inner surface of the chambers, since access to them is completely open.
Be sure to prepare a place for collecting water. Unlike conventional refrigerators, where water flows into a special tray, in models No Frost moisture can accumulate at the bottom of the chamber or flow out if the drainage hole is clogged with ice. Cover the floor around the unit with rags or place flat containers.
☑️ Preparing for defrosting
Algorithm for defrosting
After you have disconnected the refrigerator from the power supply and freed the chambers, you must leave the doors completely open. Circulating warm air from the room will speed up the melting of the ice. Depending on the thickness of the ice crust, this process can take from 10 to 24 hours.
Do not rush things by trying to pick off the ice with a knife or screwdriver. Mechanical damage evaporator is a guaranteed and expensive repair with refrigerant refilling. The ice should come off naturally. If there is a lot of ice, you can carefully collect the melting water with a sponge so that it does not get on the electronic modules.
Pay special attention to the fan area, which is usually located in the rear wall of the freezer. If a “fur coat” has formed there, the fan may jam. After complete defrosting, check whether its blade rotates freely. This is a critical component of the system No Frost.
How long does it take to completely defrost?
On average, it takes about 12-14 hours to completely defrost ice in the No Frost system. Leaving the refrigerator turned off overnight is the best solution, as this allows the ice to melt evenly without the risk of damaging the plastic.
Cleaning the drainage system
A common cause of ice jams in refrigerators LG is a clogged drainage channel. Water from melting condensate should flow freely into the evaporation tank located above the compressor. If the channel is clogged with food particles or ice, the water freezes and blocks the system.
Locate the drain hole on the back wall of the refrigerator compartment. Clean it carefully using a special brush or soft wire pre-wrapped in cloth. Do not use sharp objects that could pierce the tube. After mechanical cleaning, you can rinse the channel with warm water from a syringe.
Also check the water collection tray, which is located above the compressor in the lower rear part of the unit. If dirt or mucus has accumulated, remove it. A clean tray ensures effective evaporation of moisture, which reduces the load on the compressor and prevents the appearance of unpleasant odors.
| Work stage | Action | Execution time | Required tools |
|---|---|---|---|
| Preparation | Disconnection and release of chambers | 15-20 minutes | Bins, cooler bags |
| Defrosting | Natural melting of ice | 10-24 hours | Floor rags |
| Cleaning | Washing shelves and drainage | 30-40 minutes | Soft sponge, brush |
| Startup | Power on and check | 2-4 hours | Thermometer (optional) |
Correct startup after defrosting
When all the ice has melted and the insides of the refrigerator have dried, do not rush to immediately load the food. First, put all the shelves and drawers in place. Make sure they are dry and securely fastened. Then close the doors and turn on the unit.
Let the refrigerator run idle for at least 2-3 hours. During this time thermostat it will reach the desired temperature, and the system No Frost will stabilize the air flows. Only after reaching the operating temperature can you gradually load the products.
If you immediately fill the chambers with warm products, the compressor will work hard, trying to cool a large volume. This may shorten the life of the motor. Distribute food so that it does not block the openings for air circulation.
⚠️ Attention: If, after turning on, you hear a loud knock, hum, or see that the refrigerator is not freezing, turn it off immediately. Perhaps moisture has entered the system or an electronics failure has occurred that requires the intervention of a technician.
Typical user mistakes
One of the most common mistakes is the use of chemicals to wash plastic. Aggressive chemicals can corrode seals or leave a toxic odor that is then absorbed into food. Use only special household appliances or soda solution.
Another mistake is ignoring the condition of the rubber seals. If the door rubber does not fit tightly, warm, moist air constantly enters the chamber. This leads to increased ice formation on the evaporator, and defrosting LG will have to be done much more often.
Some users try to “trick” the system by setting the minimum temperature. This does not speed up freezing, but causes the compressor to run continuously, causing it to overheat. The optimal operating mode is indicated in the instructions for your model.
When specialist help is needed
There are situations when simple defrosting does not help. If after the procedure the ice crust forms again within a few days, the problem may lie deeper. The temperature sensor or timer may have failed. The defrost heating element, temperature sensor or timer.
It is also worth contacting the service center if you notice oily spots under the refrigerator or smell gas. These are signs of circuit depressurization. Self-repair in such cases is prohibited and dangerous.
Complex electronic failures, when the control panel does not respond to commands or shows errors (for example, error codes on the display LG), also require professional diagnostics. The technician, using special equipment, counts the history of errors and accurately identifies the faulty unit.
Why does the LG No Frost refrigerator need to be defrosted at all if the name contains “no ice”?
The system No Frost prevents the formation of ice on food and chamber walls by directing dry cold air. However, moisture from the food still settles on the hidden evaporator. Periodically, the system turns on the heating element for defrosting, but over time, ice plugs may form in the drainage or on the evaporator itself, which the system itself cannot remove.
Is it possible to defrost an LG refrigerator without unplugging it from the network?
Absolutely not. Defrosting involves completely disconnecting from the power supply for a long time. Leaving the unit running with the doors open will cause the compressor to run continuously trying to compensate for the heat and burn out. In addition, this violates safety precautions.
How often should you defrost an LG refrigerator?
The recommended frequency is once a year. However, if you notice a decrease in work efficiency, the appearance of ice or extraneous noise, the procedure should be carried out immediately. The frequency also depends on the humidity in the room and the number of times the door is opened.
What to do if the refrigerator does not turn on after defrosting?
Check the presence of electricity in the outlet. If the network is working properly, the compressor thermal protection relay may have tripped due to overheating. Wait 30-40 minutes and try to turn it on again. If there is no reaction, you need to call a technician to diagnose the start relay or compressor.
Is it possible to wash the inside of an LG refrigerator with water?
You cannot wash the internal chambers with tap water, as moisture can get into the thermal insulation layer or onto the electrical contacts. You need to wipe the walls and shelves with a well-wrung out damp cloth. The drainage hole can be washed with a small amount of water through a syringe.