The detection of a thick ice crust on the walls of the freezer is a signal that cannot be ignored. Ice buildup not only reduces the useful volume for storing food, but also forces the compressor to work with increased load. As a result, you get an increased electricity bill and risk premature failure of expensive equipment.
Modern models with the system No Frost are practically free of this problem, but even they may require attention under certain conditions. If you have a good old unit with a drip system or direct freezing, the regular formation of ice can be both a variant of the norm during rare defrosting, and a sign of a serious breakdown.
In this article we will analyze all the possible reasons why The freezer is freezingand draw up a clear action plan. You will learn how to defrost correctly so as not to damage the equipment, and in what cases it is necessary to call a technician to replace the seal or sensors.
The correct procedure for complete defrosting
The first and most obvious step when detecting massive ice build-ups is complete defrosting. Many users make the mistake of trying to speed up the process, which can lead to fatal consequences. Aluminum evaporators, often used in freezers, are very sensitive to mechanical damage.
⚠️ Attention: It is strictly forbidden to chip ice with a knife, screwdriver or other sharp objects. One careless movement will puncture the refrigerant tube, after which repairs will become economically unfeasible.
First, you must completely disconnect the device from the power supply. Remove all food items by placing them in bowls with ice or temporarily moving them to the balcony (if it is cold enough there) or to your neighbors. Leave cell doors open. The natural melting process can take from 10 to 24 hours depending on the thickness of the ice.
To speed up the process, you can put a container of hot water inside, but not boiling water. It is also possible to use a hairdryer at a minimum temperature, but the air flow should not be directed directly at the plastic parts so as not to deform them. After all the ice has melted, thoroughly wipe the inside surface with a dry cloth.
☑️ Checklist for proper defrosting
It is important to understand that simply removing the ice is not enough. If the cause of its appearance is not eliminated, the situation will repeat itself in a few weeks. Therefore, after defrosting, carefully inspect the insides of the chamber for cracks or displacements.
Faulty sealing rubber
One of the most common reasons why the freezer freezesis a loose fit of the door. Warm, moist air from the room penetrates into the chamber through microscopic gaps. When encountering cold, moisture instantly crystallizes, forming frost, which over time turns into an ice coat.
Checking the tightness can be done using a simple visual and tactile method. Inspect seal round the entire perimeter. There should be no cracks, creases or places where the rubber has moved away from the body. Often the problem lies in contamination: fat and food crumbs interfere with tight contact.
If the rubber is intact, but does not fit, try to align it by heating it with a hairdryer or pouring boiling water over it (carefully so as not to damage the plastic of the door). In cases where the material has lost its elasticity and become rigid, only replacing the part with a new one will help.
Also check whether the door itself is warping. This often happens if the refrigerator is not level or if there are too heavy objects on the shelves that deform the structure.
Problems with the moisture drainage system
In models with the system No Frost and even in some older units there is a drainage system. Its task is to divert melt water into a special tray above the compressor, where it evaporates. If drainage hole clogs with debris, crumbs or ice, the water has nowhere to go.
The remaining moisture freezes, forming ice on the bottom of the chamber or on the walls. Over time, this ice block grows and can block the fan, leading to more serious problems. Signs of a blockage can also be puddles of water under the refrigerator.
To clear the channel, you can use a soft wire (for example, copper) or a special brush. Gently push through the blockage and flush the channel with warm water from a syringe or syringe. Make sure that water flows freely.
How to prevent drainage clogging?
Regularly check the cleanliness of the moisture drainage channel. Once every 3-4 months, you can wash it with a weak solution of soda to dissolve fatty deposits, which serve as the basis for the formation of plugs.
In some cases, the problem lies in the defrost heater, which has burnt out and does not melt the ice on the evaporator. In this case, ice blocks the channel and water begins to accumulate inside the chamber. Diagnosis of this malfunction requires a multimeter and electrical skills.
Incorrect temperature setting
Often users themselves provoke the formation of ice by setting the wrong temperature. If you set the value below the required value, the compressor runs almost without interruption. This leads to deep freezing of the moisture contained in the air and its deposition on the walls.
The optimal temperature for the freezer is -18°C. This is enough for long-term storage of most products. Setting the mode -24°C or "Super Freeze" should be done only for a short time (several hours) to quickly freeze fresh products, after which the mode must be returned to normal.
Constant operation at the limit values not only creates an ice crust, but it also wears out the motor-compressor. In modern electronically controlled models, a faulty temperature sensor can produce false readings, causing the system to freeze more than required.
Check your refrigerator settings. If you are using a mechanical adjuster, make sure it is not turned up to maximum unnecessarily. In the summer, when the room is hot, the load on the unit is already high, and there is no need for additional diligence.
Violation of operating rules
The human factor plays a huge role in the formation of ice. Frequently opening the door or keeping it open for a long time leads to an active influx of warm air. The moisture contained in it instantly settles on cold surfaces.
Another common mistake is placing warm or hot products in the chamber. The evaporated moisture does not have time to be removed and settles in the form of frost. In addition, this violates the temperature conditions for storing other products.
⚠️ Attention: Never place open containers with liquid in the freezer. The water will evaporate intensively, creating ideal conditions for the rapid growth of ice build-ups on the walls and adjacent products.
It is also worth paying attention to how the products are packaged. Meat, fish and vegetables must be sealed. Opened food releases moisture, which then turns into ice. Use food containers or vacuum bags.
Do not overcrowd the chamber. For normal air circulation (especially in systems No Frost), free space is necessary. If air flows are disturbed, the temperature is distributed unevenly, which can cause local freezing and ice formation in certain areas.
Technical malfunctions and diagnostics
If all of the above reasons are excluded, and the freezer continues to become overgrown with ice, we are talking about a technical malfunction. This may be a failure of the thermostat, which prevents the compressor from stopping in time, or a breakdown of the control module.
In refrigerators with No Frost system defrosting sensors or the defrosting heating element itself often fail. In this case, the system “thinks” that there is no need to defrost, and the ice on the evaporator (which is hidden behind the back wall) grows until it begins to crawl inside the chamber.
To diagnose such problems, disassembling the back wall of the freezer is often required. You can visually estimate the amount of ice on the evaporator. If it is completely hidden under the “fur coat”, and the fan barely spins or stops, the problem is in the defrosting system.
Below is a table that helps classify symptoms for preliminary diagnosis:
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Ice only at the door | Faulty seal | Low (replacing the rubber band) |
| Ice throughout the chamber, the compressor hums constantly | Malfunction of the thermostat or sensor | Medium (replacing the sensor) |
| Ice crust inside, food is not freeze | Clogged capillary tube or freon leak | High (requires a master) |
| Ice on the back wall (hidden) | No Frost system failure (heating element, timer) | Medium/High |
Independent repair of components related to refrigerant or complex electronics without special equipment and knowledge is not recommended. You run the risk of permanently disabling the unit.
Prevention and care of the freezer
To prevent the question “why does the freezer freeze” from bothering you regularly, you must follow simple rules of prevention. Regular maintenance extends the life of equipment and maintains its energy efficiency.
Once every six months, inspect the seals and wash them with warm water and soap. Keep the condenser grid at the back of the refrigerator clean - dust on it impairs heat transfer, causing the compressor to work harder.
Use special freezing mats or containers that make it easier to remove food and prevent packaging from freezing to the bottom of the chamber. This also simplifies the cleaning process.
Myth about placing the refrigerator
Many people believe that the refrigerator should not be placed near the radiator. This is only partly true. The main thing is to provide a gap of at least 10-15 cm from the wall for ventilation. If the refrigerator is placed close to each other, heat is not dissipated, and the risk of ice forming inside increases.
Remember that even modern technologies cannot always compensate for improper operation. Taking good care of equipment is the best prevention of expensive repairs.
Is it possible to defrost a freezer without unplugging the refrigerator?
It is strictly not recommended. A running compressor with the door open may overheat and burn out. Additionally, you risk getting an electric shock if water drips onto electrical components. Always turn off the device.
Why did the ice appear again after 2 days after defrosting?
Most likely, you have not eliminated the cause. Either there is a blockage in the drain, or the seal is faulty, or the temperature sensor has failed. Rapid re-formation of ice is a sign of a malfunction.
Is it harmful for the refrigerator if it works with an ice crust?
Yes, it is harmful. Ice acts as a heat insulator, preventing food from cooling. The compressor is forced to work longer and more often, which reduces its service life. Electricity consumption also increases.
How often do you need to defrost a refrigerator with the No Frost system?
The system No Frost does not require regular defrosting to remove ice, as it occurs automatically. However, it is recommended to carry out sanitary washing and cleaning of the chamber 1-2 times a year.
What to do if the door is skewed and does not close?
Try adjusting the legs of the refrigerator, raising or lowering them to level the position. If this does not help, the door hinges may have become loose and need to be tightened.