The appearance of ice or an ice “coat” in the lower part of the refrigerator freezer Samsung is an alarming signal, which, if ignored, can lead to compressor failure. Many owners mistakenly believe that the system No Frost completely eliminates the formation of ice, but technical failures can disrupt the ideal moisture removal cycle. An ice plug under the bottom drawer is often the first visible symptom of a deeper problem inside the unit.
In modern models, such as the RL-series or RB-seriesseries, air circulation is organized in a complex manner, and the slightest violation of the tightness or operation of the sensors causes water condensation in the coldest areas. Water flows down the rear wall, but instead of evaporating, it freezes, forming massive build-ups. Operation techniques in this mode increases the load on the engine and increases energy consumption.
We will analyze in detail which components fail and why the water does not have time to go into the drainage hole. Understanding the physics of the process will help you avoid costly repairs, or at least correctly diagnose the problem before calling a technician. Below we will look at the main reasons, ranging from simple operating errors to technical malfunctions.
Violation of the tightness of the door seal
The most commonplace, but common reason is a loose fit of the rubber cuff to the body. Warm, moist air from the room penetrates into the chamber through microscopic gaps. When encountering cold, moisture instantly crystallizes, settling at the bottom of the chamber. This happens especially often if the seal is contaminated with crumbs or grease, or if the door was not closed completely.
Check the condition sealing rubber band along the entire perimeter. There should be no cracks, creases or deformations on it. In refrigerators Samsung with a system Door Alarm when the closure is not tight, a sound signal is heard, but if the sensor is stuck or faulty, you may not notice the problem right away. Warm air can also enter if you put hot food in the chamber or leave the door open for more than 30 seconds.
Regular cleaning of the seal with a soft sponge and warm water will extend its service life. If rubber has lost its elasticity and become rigid, it is difficult to restore its properties using traditional methods - you will need replacement parts. Ignoring this defect will result in the compressor working without interruption, trying to compensate for the loss of cold.
Clogged drainage hole and groove
In systems No Frost melt water from the evaporator should flow freely into a special groove and further along the drainage tube into the container above the compressor, where it evaporates. If this path is blocked, the water has nowhere to go and freezes at the bottom of the chamber, forming a block of ice under the boxes. The blockage is often caused by food particles, ice or mold.
To clear the channel, you need to remove the back panel of the freezer. In some models Samsung access to the drainage may be hidden under a layer of ice. Remove the ice carefully, without using sharp objects that could cause damage. To clean, use a soft wire or a special brush-brush, as well as warm water. evaporator tubes. To clean, use soft wire or a special brush, as well as warm water.
☑️ Cleaning the drainage system
After cleaning, check whether the water flows out freely. You can pour a small amount of liquid into the groove and see that it disappears quickly. If the water stands still, it means that the plug remains deeper in the tube. In this case, it may be necessary to purge the channel or use special solutions to dissolve fatty deposits, which often cause stagnation.
Malfunction of the evaporator defrost sensor
The key element of the system No Frost is the defrost sensor. It is he who tells the electronic control module when to turn on the heating element to melt the ice on the evaporator. If the sensor “lies” or completely fails, the defrost cycle will not start on time. The evaporator becomes overgrown with ice, which blocks the air circulation channels, and moisture begins to condense at the bottom of the chamber.
It is possible to diagnose a malfunction thermistor only using a multimeter, measuring its resistance at different temperatures. Refrigerators Samsung often use sensors with a certain resistance rating (for example, 50 kOhm at 25°C). Deviation from the norm indicates the need for replacement. Self-replacement requires disassembling the back wall and having skills in working with electronics.
⚠️ Attention: Before replacing any electrical components, be sure to disconnect the refrigerator from the electrical outlet. Working with live wiring is dangerous and can lead to burning the main control module.
Symptoms of a sensor malfunction often appear cyclically: the refrigerator operates normally for several days, then it begins to hum more intensely, and ice appears. This is because the evaporator gradually becomes clogged until the air flow is completely blocked. In such cases, complete defrosting of the unit is required within 24 hours to restore functionality before diagnostics.
Failure of the control module or heating element
If the sensor is working, the problem may lie in the heating element itself (Tene) or the control module. The defrost heating element may burn out, and then the ice on the evaporator will not melt at all. The control module, in turn, may not supply voltage to the heating element due to breakdown of the triac or other electronic components of the board.
Checking the heating element is carried out by testing the tester for an open circuit. If the resistance is infinite, the heating element has burnt out and needs to be replaced. In models Samsung Heating elements are often built into the plastic body of the evaporator, which makes it difficult to replace them without dismantling the entire structure. Sometimes it is easier to replace the assembly.
| Component | Function | Failure symptom | Test method |
|---|---|---|---|
| Defrost sensor | Evaporator temperature control | No defrosting or too frequent | Resistance measurement |
| Defrosting heating element | Heating and melting ice | Ice does not melt, there is a lot of ice | Disconnection for break |
| Control module | Cycle coordination | Chaotic operation, errors | Diagnostics of codes |
| Fan | Air circulation | Noise, slight cold | Visual inspection |
Failures in electronics can be caused by power surges in the network. If your area has unstable electricity, it is recommended to use a stabilizer. Electronic unit Refrigerators Samsung are sensitive to changes, and repairing or replacing them is an expensive procedure.
Problems with fan and circulation air
The fan No Frost provides the movement of cold air inside the chamber. If its blades are frozen or the engine is jammed, circulation stops. Cold air settles below, and warm air remains at the top, which upsets the temperature balance and leads to the formation of condensation and ice in the lower part.
Often the fan stops due to the fact that its blades rest against accumulated ice. This happens if the defrost system is not working correctly. In such cases, a characteristic crackling or buzzing sound is heard from the rear wall. It is necessary to defrost the chamber and check the free movement of the blades manually (after turning off the power!).
Why is the fan humming?
Extraneous noise during fan operation is often caused by wear of the bushings or ice ingress. If the noise remains after defrosting, the motor bearing requires lubrication or replacement of the entire assembly.
It is also worth checking whether the air ducts are blocked by food. In refrigerators Samsung with a system Multiairflow it is important that air flows freely wash all shelves. If you tightly pack the freezer with bags, closing the outlet openings, moisture will not be removed effectively.
Mechanical damage and manufacturing defects
In rare cases, the cause of ice formation is mechanical damage to the housing or factory assembly defects. Cracks in plastic panels, poor sealing of joints, or displacement of insulating materials can create “cold bridges” or pathways for moisture penetration.
If the refrigerator is new and the problem appeared immediately after installation, most likely this is a manufacturing defect. In such cases, you should not attempt repairs yourself, as you will void the warranty. Contact an authorized service center Samsung for an examination.
When transporting equipment in winter, it is important to let it warm up to room temperature before turning it on. A sudden change in temperature can cause condensation inside the insulation or electronic components, which will lead to short circuits or corrosion of contacts, which will subsequently cause malfunctions.
Prevention and proper care
To avoid the formation of ice, follow the operating instructions. Do not place foods with excess moisture in the freezer without packaging. Keep the seals clean and remove dirt in a timely manner. Regularly, at least once a year, completely defrost the refrigerator, even if you have a system No Frost.
Check the installation level of the refrigerator. If the unit is skewed, the door may not close tightly on its own. Use a spirit level to adjust the support legs. Correct installation ensures the correct operation of all systems and extends the service life of the equipment.
Monitor the temperature conditions. Setting the temperature too low (mode Power Freeze) for a long time unnecessarily can provoke increased formation of frost. Use the optimal settings recommended by the manufacturer for everyday food storage.
Frequently asked questions (FAQ)
Can a hair dryer be used to speed up the defrosting of ice?
Use of a hair dryer is allowed with caution. Direct the stream of warm (not hot!) air only at ice formations, avoiding contact with plastic parts and rubber seals, which can become deformed due to high temperature. Do not use boiling water.
Why does ice form on only one side?
This may indicate that the refrigerator is misaligned, causing water to flow to one side and freeze there. Also, the cause may be a local violation of the tightness of the seal on this particular side or a clogged water drainage channel in a particular corner.
How often do you need to change the sealing gum?
The service life of the seal is on average 5-7 years, but depends on operating conditions. If the rubber has become hard, sticky or torn, it must be replaced immediately, regardless of service life.
Is ice under the compressor box dangerous?
Yes, it is. The ice mass impairs heat transfer, causing the compressor to wear out. In addition, when a large volume of ice melts, water can get on electrical components or leak onto the floor, damaging the floor covering.