Why the refrigerator freezes food: reasons and what to do

Do you open the refrigerator, and instead of fresh vegetables you find ice blocks, and milk has turned into ice? The problem excessive freezing of food is one of the most common malfunctions faced by owners of refrigerators of any brand: from budget ATLANT to premium ones Liebherr. In 80% of cases, you can fix it yourself, without resorting to expensive repairs.

In this article we will look at why the refrigerator starts to work like a freezer - from a banal error in the settings to serious breakdowns. You will learn how all possible reasons, according to which the refrigerator begins to work like a freezer - from a banal error in the settings to serious breakdowns. You will learn how to distinguish a temporary failure from a critical malfunctionwhen it is enough to restart the equipment, and when it is time to call a specialist. And also - get step-by-step diagnostic instructions and checklists for checking each unit.

We’ll warn you right away: if your refrigerator No Frost or with the system Frost Free, the algorithm for finding the problem will differ from models with drip defrosting. But first things first.

1. Incorrect temperature settings

The most obvious, but often ignored reason is incorrectly set cooling mode. Manufacturers recommend maintaining a temperature in the main chamber from +2°C to +6°C, and in the freezer - from -18°C to -24°C. However, many users either accidentally reset the settings or deliberately reduce the temperature, fearing spoilage of food.

How to check:

• 🔍 Look at display (if there is one) or a mechanical regulator. In models Samsung RB30A3200SA or LG GA-B409SLQZ the temperature is displayed directly on the panel.
• ❄️ In refrigerators with mechanical control (for example, ATLANT MHM 1705-80), the regulator often has divisions from 1 to 7, where 1 is the warmest position, and 7 is the coldest.
• 📏 Use household thermometer (can be placed in a glass of water for 12 hours) to measure the real temperature.

What to do:

• 🔄 Set the regulator to the middle position (usually 3-4 for mechanics or +4°C for electronic models).
• ⏳ Wait 6-8 hours - the refrigerator needs time to stabilize the temperature.
• 🔧 If the settings go wrong on their own, there may be a malfunction temperature sensor or the electronic unit.

2. Clogged ventilation system (No Frost)

Refrigerators with a system No Frost (for example, Bosch KGN39XL20R or Indesit DF 5200 W) are equipped with fans that evenly distribute cold air throughout the chambers. If ventilation ducts become clogged, the cold stops circulating correctly, and the freezer begins to “overfreeze”, and the main chamber either becomes overcooled or, conversely, does not cool well.

Signs of blockage:

• ❄️ A thick layer of ice forms on the back wall of the refrigerator compartment 💨 The fan hums louder than usual or stops periodically. (even if the system No Frost).
• 💨 The fan hums louder than usual or stops periodically.
• 🔄 The temperature in the chambers is unstable: sometimes too low, sometimes too high.

How to clean:

1. 🔌 Unplug the refrigerator and defrost it for 12-24 hours.
2. 🧽 Carefully remove ice and moisture from the back wall (do not use sharp objects!).
3. 🔍 Check ventilation holes (usually located on the back wall or under shelves) - they should not be blocked by food or ice.
4. 💨 Using a vacuum cleaner with a narrow nozzle, clean grids and channels from dust and crumbs.

3. Malfunction of the thermostat or temperature sensor

Thermostat (in mechanical models) or temperature sensor (in electronic) - this is the “brain” of the refrigerator, which signals the compressor when to turn on or turn off. If the sensor breaks, the compressor can work without stopping lowering the temperature to critical -10°C and below.

How to recognize a breakdown:

• ❄️ Refrigerator does not turn off (the compressor hums constantly).
• 🌡️ The temperature in the chamber drops to -5°C and below, despite settings.
• 🔄 After manual shutdown (pulling the plug), the refrigerator turns on and freezes again.

Diagnostics:

1. 🔧 In mechanical models (ATLANT XM 4021-000, Birusa 101), the thermostat is located next to the temperature controller. It can be checked. multimeter:

   Set the multimeter to the dialing mode.
   At room temperature, the thermostat contacts should be closed.
   Immerse the sensor in ice - the contacts should open.

2. 📱 In electronic refrigerators (Samsung RL38T6117SA, LG GB-B459SLQZ), the sensor is checked through service menu or replaced with a known good one.

Disconnect the refrigerator from network

Remove the thermostat protective casing

Ring the contacts with a multimeter

Turn the regulator knob (there should be a click)

Replace the thermostat if it malfunctions-->

4. Refrigerant leak or blockage of the capillary tube

If the refrigerator freezes too much, but does not turn offis possible freon leakage or a blockage in capillary systemIn this case, the compressor is working hard, trying to compensate for the loss of refrigerant. leads to freezing.

Signs:

• ❄️ Freezer is covered with a thick layer of snow, and the refrigerator compartment either freezes or does not cool well.
• 🔊 The compressor hums louder than usual and almost does not turn off.
• 💧 Oily stains may appear on the floor under the refrigerator What to do: (a sign of leakage).

What to do:

• 🚫 Self-repair not recommended — special equipment is required for refilling freon.
• 🔧 The technician must:
  • 🔍 Find the location of the leak (often this is evaporator or condenser).
  • 🛠️ Repair damage and fill the system with refrigerant.
  • 🔄 Check operation filter drier (if clogged, replace it).

5. Failure of the electronic control module

In modern refrigerators (Samsung Family Hub, LG InstaView) it is responsible for the temperature electronic control unit. If it fails, a malfunction may occur in the algorithm of the compressor operation: instead of cyclic on/off, it begins to work continuously, which leads to freezing.

Symptoms:

• 🤖 The display shows errors (for example, Er IF y Samsung or E1 y Indesit).
• 🔄 Temperature in the chambers does not correspond to the settings (for example, when +5°C on the display it really -10°C).
• 🔌 The refrigerator can on its own reboot or turn off.

Possible causes of failure:

⚠️ Attention: If you do not have experience working with electronics, do not try to repair the unit yourself. Errors in soldering or firmware can completely damage the refrigerator.

6. doors

Worn out or dirty seal allows warm air to enter the chamber. To compensate for the loss of cold, the compressor begins to work more intensely, which leads to freezing. This is especially true for refrigerators Stinol 102, Nord 242-4 and other models with old-style rubber seals.

How to check the tightness:

• 📄 Take sheet of paper and clamp it between the door and the body.
• 🔍 If the sheet easily pulled out the seal is faulty.
• 💡 Shine a flashlight inside the closed refrigerator: if light is visible, there are gaps.

Solutions:

• 🧼 Clean the seal soap solution (without abrasives!).
• 🔧 If rubber cracked —replace the seal (cost for ATLANT —from 1,500 rubles).
• 🧲 Check magnetic tape —over time it loses its strength.

How to temporarily eliminate cracks without replacing the seal

If the seal is deformed but not yet torn, you can try to restore its shape:

1. Heat the rubber with a hair dryer (temperature no higher). 60°C).

2. Stretch the seal with your hands so that it takes its original shape.

3. Close the door and secure it with tape for 12 hours.

This method works in 60% of cases, but does not eliminate the need for replacement.

7. Incorrect installation of the refrigerator

Even a new refrigerator can freeze food if it is installed incorrectly. Here are the key errors:

• 🔥 Too close to heat sources (battery, stove, direct sunlight). limit, which leads to hypothermia.
• 🚪 Uneven floor —if the refrigerator is tilted, the door may not close tightly.
• 🌬️ Poor ventilation —the back grill should be 5–10 degrees behind the wall see

How to fix:

• 📏 Use levelto level the refrigerator (adjust the legs).
• 🔌 Make sure that the outlet is not overloaded (the refrigerator must be connected directly, without extension cords).
• 🌡️ The optimal room temperature is +16°C…+32°CAt +10°C and below some models (Indesit BIAA 13) start to fail.

8. Failures after defrosting or transportation

Sometimes the refrigerator begins to freeze immediately after defrosting or transportation Reasons:

• ❄️ To the system. got moisturewhich froze and blocked the capillary tube.
• 🚛 During transportation, damage to the tubes could occur. displacement compressor or tube damage.
• 🔌 Voltage surge when first turned on after moving.

What to do:

1. 🔌 Turn off the refrigerator for 12-24 hours to give the refrigerant time to stabilize.
2. 🔍 Check that are there oil stains under the compressor (a sign of damage).
3. 📱 If the problem persists, call a technician to diagnostics of the pressure in the system.

⚠️ Attention: If the refrigerator was transported lying down (not standing), before turning it on, you need to keep it at least 6 hours in a vertical position. Otherwise, oil from the compressor may enter the system and cause blockage.

FAQ: Frequently asked questions about freezing in the refrigerator

❓ Why does the No Frost refrigerator freeze food if it should defrost automatically?

In systems No Frost freezing is often associated with:

• 🔥 Malfunction evaporator heater (ice does not melt during the defrost cycle).
• 💨 Breakage fan (cold is not distributed evenly).
• 🧊 Clogging drainage hole (water does not drain, ice forms).

Solution: defrost the refrigerator for 24 hours, if the problem repeats, check the fan and defrost heating element.

❓ Can a refrigerator freeze due to frequent opening of the door?

Yes, but only if:

• 🚪 The door opens more than 20 times per hour (for example, in a cafe or a large family).
• 🌡️ The room temperature is high (+30°C and higher).
• 🔄 Refrigerator does not have time to restore the temperature between openings.

Solution: reduce the opening frequency or install a model with quick cold recovery function (for example, Liebherr CPesf 4043).

❓ How to check if the compressor is working if the refrigerator freezes without stopping?

Check test:

1. 🔌 Disconnect the refrigerator from the network.
2. 👂 Listen to the compressor (black “barrel” at the back): if it hot to the touch i buzzes even after switching off is possible turn-to-turn breakdown.
3. 📊 Measure the resistance of the windings with a multimeter:
   • Between contacts C-S and C-R should be 20–40 Ohm.
   • Between S-R — 10–20 Ohm.
   • If the readings 0 or ∞ - the compressor is faulty.

❓ Why is the temperature in the freezer normal, but everything freezes in the refrigerator?

This is a typical sign:

• 🔄 Faulty magnetic valve (in two-compressor models).
• 🧊 Clogging in the capillary system fridge compartment.
• 🌡️ Failure of the evaporator sensor (it “thinks” that it is warm in the chamber and causes the compressor to work without stopping).

Solution: diagnostics of the switching valve or replacement of the sensor is required.

❓ Is it possible to fill the refrigerator with freon yourself?

⚠️ No, if you do not have:

• 🛠️ A vacuum pump for pumping air out of the system.
• 🧪 A pressure manifold for control pressure.
• 🔧 Experience in soldering copper tubes (if there is a leak, you need to solder the damaged area).

Incorrect filling can lead to damage to the compressor or explosion of a cylinder with freon.