How to reduce the cold in the refrigerator: step-by-step instructions and tips experts

Is the refrigerator working “for wear and tear”, food freezes, and an ice crust forms on the back wall? The reason most often lies in incorrect temperature settings or failures in the cooling system. You can reduce the cold in the chamber yourself - without calling a specialist and without expensive repairs. In this article we will analyze 7 proven ways to reduce the temperature in the refrigeratorincluding adjusting the thermostat, checking the seal and diagnosing sensors.

It is important to understand: if the refrigerator No Frost or with the system Total No Frost it freezes too much, this is not always a breakdown. Perhaps you simply set the mode incorrectly after defrosting or moving. We will tell you how to distinguish normal operation from a malfunction, and give checklists for popular models (LG, Bosch, Beko etc.).

Before proceeding with the settings, check whether the mode is turned on Super Freeze or Holiday (if available). These functions artificially lower the temperature to quickly freeze or save energy in an empty refrigerator.

1. Adjusting the temperature through a thermostat or electronic panel

The most obvious way to reduce the cold is to change the thermostat settings. Depending on the refrigerator model, this can be done with a mechanical rotary dial or through the touch menu.

In mechanical models (for example, Biryusa or Atlant old model) the regulator is usually located inside the chamber on the right wall. Turning clockwise increases cold, counterclockwise - decreases. The optimal position for most refrigerators is between 2 and 3 (from 5-7 divisions).

In electronic refrigerators (Samsung RB30J3000, LG GA-B409) the temperature is adjusted buttons Temp or through the menu Settings → Fridge Temp. Recommended values:

• 🥦 Refrigerator compartment: +4…+5°C (optimal for storing vegetables, dairy products)
• ❄️ Freezer compartment: –18°C (standard for long-term storage)
• ⚠️ Mode Super Cool: turn off if it is activated (usually the snowflake indicator is on)

Make sure that the refrigerator is not in mode Holiday or Quick freezing

Check if the food is blocking the ventilation holes

Measure the temperature with a thermometer (put a glass of water on the middle shelf for 2 hours)

Reset the settings to factory settings, if previously experimented with modes

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If, after changing the settings, the temperature did not change within 6-8 hours, the problem may be in faulty thermostat or the sensor. In this case, diagnostics will be required (more on this in section 5).

⚠️ Attention: In refrigerators with a system No Frost after the temperature changes, the fan may work louder - this is normal. The noise should subside after 10–15 minutes.

2. Checking and replacing the sealing rubber

A worn or dirty seal allows warm air to pass through, causing the refrigerator to work harder. This is one of the most common reasons freezing of food in the lower compartments.

How to check the tightness:

1. Take a sheet of A4 paper.
2. Close door, holding the sheet between the seal and the body.
3. Pull the sheet towards you: if it comes out without effort the rubber band is faulty.

Inspect the seal for:

• 🧹 Dirt and grease (clean with soapy water)
• 🔍 Cracks or deformations (replace if damaged)
• 🧲 Detachments from the body (glue with double-sided tape or glue "Moment")

For models Indesit and Ariston seals are sold in the form of meter tape - they can be cut and glued yourself in refrigerators Liebert or Snaige one-piece rubber bands are often used for a specific model (the part number is indicated in the passport).

3. Diagnostics of the temperature sensor

The sensor (thermistor) transmits temperature data to the control board. If it fails, the refrigerator begins uncontrolled. freeze or, conversely, to cool poorly. In most models, the sensor is located:

• In the refrigerator compartment - behind the plastic panel on the back wall.
• In the freezer compartment - next to the evaporator (in systems No Frost).

Signs of sensor malfunction:

• 🌡️ Temperature in the chamber does not correspond to the installed one (for example, it shows +5°C, and the food is frozen).
• 🔄 The compressor runs without stopping or turns on too often.
• ❄️ A thick layer of ice forms on the back wall (in models without No Frost).

You can check the sensor with a multimeter:

1. Disconnect the refrigerator from the network.
2. Remove the protective panel and disconnect the sensor connector.
3. Measure the resistance: at room temperature (~20°C) it should be 4–6 kOhm.
4. Immerse the sensor in a glass of cold water - the resistance should increase.

If the readings do not change or are very different from the norm, the sensor must be replaced. For popular models (Samsung RL34, Bosch KGE39), parts can be found by the code indicated on the sensor itself or in the service manual.

⚠️ Attention: In refrigerators with electronic control (LG Inverter, Electrolux NutriFresh, after replacing the sensor, you may need to reset errors through the service menu. This is usually done by holding the buttons Power Cool + Power Freeze for 10 seconds.

4. ventilation holes and evaporator

In models with the system No Frost air circulates through the chambers through ventilation ducts. If they are clogged with ice or dust, the cold is distributed unevenly: in some areas the products freeze, in others they spoil from the heat.

How clean the system:

1. Unplug the refrigerator and defrost it (at least 6 hours).
2. Remove the back panel in the refrigerator compartment (usually secured with latches or screws).
3. Clean the ventilation holes with a cotton swab or soft brush.
4. Rinse the drainage hole (located at the bottom of the rear wall) with warm water and citric acid.

In the freezer, check the evaporator (aluminum radiator behind the rear panel). If it is covered with ice, it means The defrosting system is malfunctioning. data-i="157">the operation of the defrosting system is disrupted

• 🔥 The defrosting heater (TEN) is faulty.
• 🕒 The defrosting timer is broken (in mechanical models).
• 💧 The drainage channel is clogged (water does not drain, it forms ice).

To clean the evaporator:

1. Defrost the camera completely.
2. Remove the back panel (in some models Whirlpool or Gorenje you will need to unscrew the screws).
3. Remove the ice with a plastic scraper (not metal!).
4. Dry the evaporator with a hairdryer (cold air!) and put the panel back together.

What will happen if you ignore the clogged ventilation?

If you do not clean the ventilation ducts, the compressor will wear out, trying to compensate for the lack of cold. This will lead to:

1) Increased energy consumption (up to +30%).

2) Overheating of the motor and the risk of breakdown in 1-2 years.

3) Formation of mold in the drainage system due to stagnant moisture.

5. Checking the operation of the compressor and control board

If the refrigerator freezes too much, but all the previous methods did not help, the problem may lie in compressor or electronic board. It is better to entrust the diagnosis of these components to a specialist, but you can do a preliminary check yourself.

Symptoms of a faulty compressor:

• 🔊 Constant hum without pauses (should turn off for 10-20 minutes per hour).
• 🔥 The compressor housing (black cylinder at the back) is too hot (normal: warm, but not scalding).
• ⚡ Voltage surges when turned on (the lights in the house are blinking).

To check the board controls:

1. Unplug the refrigerator for 1 minute, then turn it on again. Sometimes this clears errors.
2. Look at the display: if errors are on (for example, E1, F2), decipher them according to the manual.
3. Check the board contacts for oxidation or burning (carefully remove the cover, having previously photographed the location of the connectors).

In inverter refrigerators (Samsung Digital Inverter, LG Smart Inverter), the compressor operates almost silently, but with variable power. If it starts humming or vibrating, this is a sign of bearing wear or freon leakage.

⚠️ Attention: If you suspect a freon leak (the refrigerator stopped freezing after mechanical cleaning of the evaporator), do not turn it on this may lead to compressor failure. Contact the service center.

6. Optimizing food loading

Even a working refrigerator will freeze more strongly if the rules for placing food are violated. Here's what affects the temperature:

• 🥩 Hot food: never place soups or pots that have not cooled down in the chamber. Steam increases humidity and makes the compressor work longer.
• 🧊 Overloading the freezer: if food is tightly packed, the cold does not circulate. Leave 1-2 cm gaps between bags.
• 🚪 Opening the door frequently: every time you open the temperature inside rises by 2-3°C. Try not to keep the door open for more than 10 seconds.
• 🌬️ Blocking ventilation: do not place tall bottles or containers in front of the back wall (especially in No Frost).

Zoning recommendations:

• 🥛 Top shelves: dairy products, eggs, ready meals (it's warmest here).
• 🥦 Middle shelves: soups, sauces, semi-finished products.
• 🍎 Bottom drawers: fruits and vegetables (here moister, but cooler).
• 🥓 Door: only products resistant to temperature changes (oil, sauces, drinks).

If your refrigerator has a zone Fresh Zone or 0° Zone (for example, in Bosch VitaFresh or Liebherr BioFresh), use it for meat, fish and herbs. The temperature is maintained here at about 0°C, which prevents freezing.

7. When to call a technician: signs of serious damage

If you have tried all the methods, but the refrigerator still freezes food, most likely the problem is hardware malfunction. help is indispensable:

• 🔧 Freon leak: the refrigerator does not cool at all or freezes weakly, the compressor works without stopping.
• 🔌 Compressor breakdown: protection is triggered (the refrigerator turns on and off immediately), a smell is heard burning.
• 🖥️ Control board failure: all indicators blink, does not respond to buttons, shows non-existent errors.
• 🧊 Clogged capillary tube: the freezer works, but the refrigerator compartment does not (or vice versa).

The cost of repair depends on the breakdown:

Before the technician’s visit:

1. Defreeze the refrigerator and dry it.
2. Prepare documentation (warranty card, passport).
3. Write down the symptoms of the breakdown (when they appeared, how they manifest themselves).

⚠️ Attention: If the refrigerator is under warranty, do not disassemble it yourself - this will void the warranty. Contact an authorized service center of the brand.

FAQ: Frequently asked questions about adjusting the cold in the refrigerator. refrigerator

❓ Why is the refrigerator very cold, even if the thermostat is at minimum?

Probable reasons:

1. The thermostat or sensor is faulty - they “deceive” the control board, causing the compressor to work longer.
2. Clogged capillary tube - freon does not circulate normally, and the cold “gets stuck” in the refrigeration chamber.
3. Failure in the control board (often after a power surge).

Solution: turn off the refrigerator for 10 minutes (sometimes rebooting helps), then check the sensor with a multimeter. If the problem persists, call a technician.

❓ Is it possible to regulate the temperature in the freezer and refrigerator separately?

Yes, but only in models with two compressors or electronic controlFor example:

• In Samsung RB37J5230 the temperature of the chambers is controlled by separate buttons Fridge i Freezer.
• In LG GA-B489 the system is used Smart Cooling, where each chamber is adjusted independently.

In single-compressor refrigerators (for example, Atlant MHM 170), a change in temperature in one chamber will affect the other.

❓ How often is needed defrost the refrigerator to avoid freezing?

Depends on the type of system:

• Drip system (in most budget models): defrost once every 3-4 months.
• No Frost: once a year is enough (if there are no signs icing). data-i="297">❓ Why did the refrigerator start to freeze more after defrosting?
• Low Frost (for example, in Beko): defrost every 6 months.

Signs that it’s time to defrost: ice on the back wall is thicker than 5 mm, an unpleasant smell, the compressor runs non-stop.

❓ Why did the refrigerator begin to freeze more after defrosting?

Possible reasons:

1. You accidentally turned on the mode Super Freeze or Fast Cool (turn it off with the button on the panel).
2. During defrosting, the temperature sensor or seal was damaged.
3. Moisture got into the system and the drainage hole became clogged (check if water is flowing under the vegetable drawer).

Solution: reset the settings to factory settings (usually with the button Reset or hold Power 10 seconds), then set the temperature again.

❓ What temperature should be in the refrigerator for storing medicines?

Most medications (insulin, vaccines, some antibiotics) require temperature +2…+8°CTo ensure it:

1. Place the medications on the middle shelf (the most stable place).
2. Use a thermometer for the refrigerator (costs ~300 ₽).
3. Do not store medications in the door - there the temperature fluctuates when opened.

If the refrigerator does not hold the required temperature temperature, use a thermal container with cold accumulators (sold in pharmacies).