Why ice builds up in a Samsung refrigerator: we analyze all the reasons and solutions

Found in the refrigerator Samsung a thick layer of ice on the back wall, freezer or even under vegetable drawers? This is not just an aesthetic problem - ice impairs the performance of equipment, increases energy consumption and can lead to compressor failure. In this article, we will analyze in detail why ice appears in refrigerators Samsung (including models with the system No Frost), how to diagnose the cause and what to do to eliminate it.

It is important to understand: the formation of ice is always a signal of a disruption in the normal operation of the refrigeration unit. In 80% of cases, the problem can be solved independently, without resorting to the services of a service center. We have collected proven diagnostic methods, including step-by-step instructions with photos and videos (links to official sources Samsung are provided in the relevant sections). If ice appears again after defrosting, this is a reason to check the equipment for serious malfunctions.

The article will be useful to owners of refrigerators Samsung of all series: from budget RT20 to premium ones Family Hub with a display. We will pay special attention to models with No Frost systemwhere ice often accumulates hidden - behind the back panel or in the air ducts.

1. Violation of tightness: why the seal is the main cause of ice

The most common reason for the formation of ice in refrigerators Samsung is wear or contamination sealing rubber on the door. Even micro-cracks lead to warm air getting inside the chamber, which is why the compressor works in increased mode, and moisture condenses and freezes. This is especially true for models with drip defrosting system (for example, Samsung RB29FERNCSS or RT38K6***).

How to check the seal:

• 🔍 Visual inspection: please note pay attention to cracks, tears or deformation of the rubber. Most often, the corners of the door are affected.
• 📏 Test with a sheet of paper: Close the door by pressing the sheet between the seal and the body. If the paper is easily pulled out, the seal is broken.
• 💡 Checking the magnet: in modern models Samsung the seal contains a magnetic insert. If the door closes without a characteristic “click”, the magnet is weakened.

If the seal is damaged, you can try to restore it:

1. Wash the elastic band with warm water and soap, removing grease and dirt.
2. Apply a thin layer of silicone grease (for example, WD-40 Specialist) for elasticity.
3. If deformed, warm the problem areas with a hairdryer (temperature no higher 50°C).

⚠️ Attention: If the seal has delaminated or lost its shape, it must be replaced. For refrigerators Samsung original rubber bands can be ordered according to the article number specified in the device passport (for example, DA97-08006A for series models RB).

Check the tightness once every 3 months

Clean the rubber band with soapy water monthly

Avoid aggressive detergents (bleach, acetone)

Lubricate with silicone grease 2 times a year

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2. Malfunction of the No Frost system: when the fan or heating element fails

Refrigerators Samsung with technology No Frost (for example Samsung RL38, RS62R5) theoretically should not become covered with ice. However, if the system fails, ice forms on the back. wall of the freezer chamber or in the air ducts. Main reasons:

To diagnose the system No Frost in refrigerators Samsung follow the following steps:

1. Disconnect the refrigerator from the network for 12-24 hours for complete defrosting.
2. Remove the back panel of the freezer (in most models it is secured with 4-6 screws).
3. Check the condition of the fan: it should rotate freely. If icing, carefully remove the ice with a plastic scraper.
4. Inspect the defrost heating element. (thin spiral under plastic protection). If there is visible damage or a broken circuit, replacement is required.

How to check a defrost heating element with a multimeter

Set the multimeter to resistance measurement mode (200 Ohm).

Disconnect the terminals of the heating element and touch it with the probes contacts.

Resistance of a working heating element: 20–40 Ohms. Readings “1” or “0” mean an open circuit or a short circuit.

If after defrosting ice appears again within 1-2 weeks, the problem is most likely in electronics (control board or sensor temperature). In this case, we recommend contacting a service center Samsung, since independent repairs can lead to failure of the compressor.

3. Incorrect temperature: why freezing leads to icing

Many users mistakenly believe that the lower the temperature in refrigerator, the better. However the “Super Freeze” mode or setting the temperature below −20°C in the freezer leads to excessive ice formation, even if the No Frost system is working. data-i="139">+4...+5°C (for models with a fresh zone. In refrigerators Samsung the optimal settings:

• 🥶 Refrigerator compartment: +4…+5°C (for models with freshness zone FlexZone — +1…+3°C).
• ❄️ Freezer camera: −18°C (turn on the "Super Freeze" mode only for 2-3 hours for quick freezing).

How to set the temperature correctly:

1. On models with mechanical controls (for example, Samsung RT32K5***), turn the knob to the mark 2–3 (out of 5 possible).
2. In refrigerators with a display (series Family Hub, Bespoke) go to Settings → Temperature and set the values manually.
3. Check the temperature with a thermometer (put it in a glass of water on the middle shelf).

⚠️ Attention: In refrigerators Samsung with function CoolSelect Zone (for example, RF23HCEDBSR) the temperature in the middle compartment is regulated separately. If the “Meat/Fish” mode (−1°C) is set there, check whether the drainage hole in this compartment is clogged - this is a common cause of local icing.

4. Clogged drainage system: why water freezes in the tube

In refrigerators Samsung with drip defrosting system (models without No Frost), condensate flows down the back wall into the drainage hole, and then is discharged into a special tank. If the tube becomes clogged, water accumulates and freezes, forming ice build-ups under the vegetable drawers or at the bottom of the chamber.

Signs of a clogged drain:

• 💧 Puddles under the refrigerator (water overflows tank).
• ☃️ Ice at the bottom of the refrigerator compartment, even if the seal is working.
• 🌬️ Unpleasant odor due to stagnant water in the tube.

How to clean the drainage system:

1. Turn off the refrigerator and remove all the food.
2. Find a drainage hole (usually in the center of the back wall of the refrigerator).
3. Use a syringe or syringe, rinse the hole with warm water and citric acid (1 tablespoon per 1 liter of water).
4. To remove serious blockages, use a flexible wire (diameter 2-3 mm), rotating it clockwise.
5. After cleaning, dry the tube with a hairdryer (cold blowing) and turn on the refrigerator.

In models with No Frost drainage The tube is located behind the back panel of the freezer. To clean it, you will need to defrost and dismantle the panel (see video instructions from Samsung Support for your model).

5. Malfunction of the thermostat or temperature sensor

The thermostat (or electronic sensor in modern models) is responsible for controlling the temperature in the chambers. If it fails, the compressor either works without stopping (leading to icing), or, conversely, turns on too rarely (leading to food spoilage). Refrigerators Samsung use two types of sensors:

• 🔧 Mechanical thermostat (in budget models, for example, Samsung RT22HAR***).
• 📱 Electronic sensor (in series Family Hub, Bespoke, SpaceMax).

Signs of a thermostat malfunction:

• 🕒 The compressor runs for more than 20 minutes without pauses.
• 🌡️ The temperature in the chambers does not correspond to the set temperature (for example, in the freezer +5°C instead of −18°C).
• ❄️ Ice builds up even after defrosting and cleaning.

How to check the thermostat:

1. Turn off the refrigerator and remove the food.
2. Remove the thermostat protective cover (usually located inside the refrigerator compartment, under the top panel).
3. Ring the contacts with a multimeter in resistance mode:
   • At room temperature, the resistance should be 0 Ohm (contacts are closed).
   • After cooling the sensor (for example, putting it in the freezer for 10 minutes), the resistance should become infinite (contacts open).

⚠️ Attention: In refrigerators Samsung with electronic control (display on the door), a sensor malfunction is often accompanied by error code on the screen. The decoding of the codes for your model can be found in the user manual or on the website. Samsung Support.

If the thermostat is faulty, it must be replaced. For models Samsung original sensors can be ordered by article number:

• DA97-08636B — for series RB, RS (2018–2023) gg.).
• DA92-01493A — for models with Twin Cooling Plus.

6. Overloading the freezer: why a “clogged” refrigerator freezes up

Many users do not realize that overloading of the freezer compartment products can lead to icing. circulation of cold air, due to which moisture condenses and freezes on the walls. This is especially true for refrigerators Samsung s No Frostwhere the fan cannot evenly distribute the cold.

Signs overload:

• ❄️ Ice forms on food (especially in corner areas).
• 🍗 Meat or fish “freeze” to the walls of the freezer.
• 🌬️ The fan hums louder than usual (trying to break through the flow air).

Recommendations for loading the freezer:

• 📦 Do not fill more than 70%: leave gaps between products for air circulation.
• 🥩 Cut large pieces: a whole poultry carcass or a large cut of meat overlaps air ducts.
• 🧊 Use containers: open bags of vegetables or berries increase humidity.
• 🔄 Do not place the food close to the back wall: minimum distance - 3-5 cm.

If ice has already formed, perform partial defrosting:

1. Take out all the food and put it in a cooler bag or wrap it in towels.
2. Unplug the refrigerator and open the freezer door.
3. Place a container of hot water (not boiling water!) in the chamber or use a hairdryer in cold blowing mode.
4. After removing the ice, wipe the walls with a dry cloth and turn on the refrigerator.

7. External factors: humidity, frequent opening of the door and the location of the refrigerator

Sometimes there is ice in refrigerator Samsung appears not due to a malfunction, but for external reasons:

Pay special attention indoor microclimateIf the refrigerator Samsung standing in a damp basement or on an unheated loggia, condensation will form more intensely. Optimal conditions for work:

• 🌡️ Air temperature: +16…+32°C.
• 💧 Humidity: no more than 70%.
• 🔌 Mains voltage: 220V ±10%.

If the refrigerator is located in non-ideal conditions, use additional measures:

• 🔥 To protect against overheating: install a fan for blowing the back wall.
• 💧 To combat humidity: place a moisture absorber inside the chamber (for example, Eva-Dry).
• ⚡ To stabilize the voltage: connect through a voltage control relay (Bison R116y or analogues).

⚠️ Attention: In refrigerators Samsung with a display (series Family Hub), voltage surges can lead to firmware failure. If after a thunderstorm or a power outage the refrigerator begins to work incorrectly, reset the settings: Settings → Support → Reset.

What to do if ice appears again: algorithm of actions

If after all the manipulations ice in the refrigerator Samsung forms again, follow this algorithm:

1. Step 1. Diagnostics:
   • Check the seal and tightness of the door.
   • Inspect the drainage hole and the back wall for the presence of ice.
   • Listen to the operation of the fan (in models with No Frost).
2. Step 2. Defrosting:
   • Unplug the refrigerator.
   • Remove all food and shelves.
   • Leave the doors open for 12-24 hours (for complete defrosting No Frost may it will take up to 48 hours).
3. Step 3. Cleaning:
   • Rinse all shelves and drawers with warm water and soda.
   • Clean the drainage hole.
   • Remove ice from the fan and heating element (in models c No Frost).
4. Step 4. Check after switching on:
   • Set the temperature to +4°C in the refrigerator compartment and −18°C in the freezer.
   • Observe the operation for 3-5 days.
   • If ice appears again, contact to the service center.

For refrigerators Samsung with a warranty (usually 1-2 years for a compressor and 5-10 years for No Frost) repairs will be free if a manufacturing defect is confirmed. In order not to lose the warranty:

• Do not disassemble the refrigerator yourself (you can remove the back panel, but do not touch the electronic boards).
• Keep the receipt and warranty card.
• Contact only authorized service centers Samsung.

FAQ: Answers to frequently asked questions about ice in the Samsung refrigerator

❄️ Why does No Frost build up in the Samsung refrigerator ice, if the system should prevent this?

The system No Frost prevents the formation of ice only if all components are working properly: fan, defrost heating element and timer. If at least one element fails (for example, a heating element burns out), the moisture is not removed and freezes. In 90% of cases, the problem is solved by replacing the faulty part.

Ice can also appear due to:

• Clogged drainage hole (water does not drain and freezes).
• Incorrect temperature (below −20°C in the freezer).
• Frequent opening of the door (warm air condenses).

🔧 Is it possible to replace the defrost heating element in a Samsung refrigerator yourself?

Yes, if you have experience working with electronics. To replace the heating element in models with No Frost:

1. Disconnect the refrigerator and defrost it.
2. Remove the back panel of the freezer (unscrew the screws).
3. Disconnect the terminals of the old heating element and install a new one (specify the article number according to the refrigerator model).
4. Check the operation of the system after assembly.

If you are not confident in your abilities, it is better to contact the service - incorrect installation can lead to a short circuit.

🕒 How often do you need to defrost a Samsung refrigerator with No Frost?

The manufacturer claims that refrigerators s No Frost do not require defrosting. However, in practice it is recommended:

• Carry out preventive defrosting once every 6–12 months (turn off for 12–24 hours).
• Clean the drainage hole and fan once every 3 months.
• Check the seal and temperature once a month.

This prevents ice from accumulating in hidden areas (for example, on the evaporator) and extends the life of the equipment.

💰 How much does it cost to repair a Samsung refrigerator when icing?

Repair cost depends on the cause and model. Average prices in service centers (2026):

• Replacing the seal: 1,500–3,000 ₽ (including parts).
• Cleaning the No Frost system: 2 500–4 500 ₽.
• Replacing the heating element defrost: 3 000–5 000 ₽.
• Electronic board repair: 4 000–8 000 ₽.

If the refrigerator is under warranty, repairs are free (except for cases of mechanical damage).

🔄 Can ice appear in a Samsung refrigerator due to improper installation?

Yes, if:

• The refrigerator is installed unevenly (the skewed door breaks the seal).
• The back wall is close to the wall (there is no ventilation for the compressor).
• The equipment is standing next to heat sources (stove, battery, direct sunlight).

Check:

• Tilt level (the door should close on its own under by the action of a magnet).
• The gap between the refrigerator and the wall (at least 5 cm in the back and 2 cm on the sides).
• The room temperature (not higher than +32°C).