Why the top of the refrigerator does not cool, but the freezer works: 7 reasons and what to do

The situation is familiar to many: you open the refrigerator, and the food in the upper chamber is warm or barely cool, although the freezer works as usual. Why doesn’t the top of the refrigerator cool, but the freezer freezes? This problem occurs as in the old ones models Atlant or Biryusa, and in modern Samsung No Frost or LG Inverter. Most often, problems in the cold circulation system are to blame, but sometimes it’s a simple user error.

In this article we we will analyze all possible reasons, from simple (clogged fan) to complex (freon leakage), and also give step-by-step instructions for diagnosis and repair. You will find out when you can handle it yourself, and when it’s time to call a specialist - and how much it will cost.

Let us immediately note: if the refrigerator is with one compressor, the problem is almost always related to the cold distribution system. In models with two compressors (for example, Liebherr CN 4315 or Bosch KGE39XW2AR), the fault may lie in a separate cooling circuit of the upper chamber. But first things first.

1. Clogged No Frost system: why the top chamber is warm, but the freezer works

If your refrigerator is equipped with a system No Frost (for example, Indesit DF 5200 W or BEKO RCSK 310M20), the first reason for a non-working top is freezing of the fan or air ducts. In such models, the cold is distributed among the chambers using a fan that drives air through the evaporator. If the channels are clogged with ice or dust, the cold simply does not reach the upper chamber.

How this happens:

1. The evaporator freezes due to a faulty defrost timer or burned out defrost heating element.
2. Ice blocks the fan blades - it stops spinning.
3. Cold air does not enter the refrigerator compartment, although the freezer continues to work (it has its own cooling circuit).

Signs of clogging No Frost:

• 🔊 The fan does not make noise (normally it can be heard when the freezer door is open).
• ❄️ There is a thick layer of ice or frost on the back wall of the freezer.
• 🌡️ The temperature in the freezer is below normal (for example, -24°C instead of -18°C).

What to do:

1. Defrost the refrigerator for 12-24 hours (unplug, open all doors).
2. After defrosting, check that whether the fan is working (listen or put your hand to the bars in the freezer).
3. If the problem repeats after 1-2 weeks, the defrost sensor is faulty defrost sensor data-i="95">Heater or heating element (needs repair).

2. Fan malfunction: how to check and repair

The fan is a key element in refrigerators No Frost and some models with drip system (for example Samsung RT-22 HAR4DSA1). If it breaks, the cold stops flowing into the upper chamber, although the freezer continues to work. Reasons for fan failure:

• 🛠️ Mechanical blockage (ice, foreign object).
• 🔌 Winding breakage or bearing wear.
• 🔋 Problems with power supply (the control unit is faulty).

How to check the fan:

1. Disconnect the refrigerator from the mains.
2. Remove the back panel of the freezer (usually secured with 4-6 screws).
3. Find the fan (plastic impeller behind grate). Turn it by hand - if it does not rotate or creaks, the problem is mechanical.
4. Connect the refrigerator to the network and listen: if the fan does not start, but voltage is supplied to it (checked with a multimeter), it means it has burned out.

Repair cost:

How to temporarily “reanimate” the fan before repair?

If the fan creaks but still spins, you can drop 1-2 drops of machine oil (for example, for sewing machines) into the bearing. This will extend its operation for several months, but will not replace a full repair.

3. Freon leak: why the freezer works, but the refrigerator does not

If in your refrigerator one compressor, but the upper chamber does not cool, and the freezer works - it is possible freon leak in the circuit of the refrigeration chamber. This is a typical problem for models Stinol 101, Nord 242 and others with a combined cooling system.

How this happens:

• Freon circulates through two circuits: first cools the freezer, then the fridge compartment.
• If a microcrack appears in the tubes of the upper chamber, freon leaks out and the cold does not reach the top.
• The compressor works for wear, trying to compensate for the loss of pressure, but the fridge compartment remains warm.

Signs of a leak freon:

• 🔊 The compressor works without stopping or turns on too often.
• ❄️ The condenser (grid at the back of the refrigerator) is barely warm (normally it should heat up).
• 💧 Oil on the floor under the refrigerator (if strong leak).

Attention! It is impossible to eliminate a freon leak on your own - you need soldering tubes refrigerant charging. Average repair cost: 4,000–10,000 rubles, depending on the model. If the refrigerator is more than 10 years old, it is sometimes cheaper to buy a new one.

4. Problems with the thermostat or temperature sensor

In refrigerators with electromechanical control (for example, Atlant MHM 1705) the thermostat is responsible for cooling - it turns the compressor on/off based on a signal from the sensor. If the thermostat is broken, the compressor may not receive a command to cool the upper chamber.

In modern models (for example, LG GA-B489 YDQZ) acts as a thermostat electronic sensor. If it fails, the control unit “does not see” that it is warm in the refrigerator compartment and does not turn on the fan or compressor.

How to check the thermostat:

1. Disconnect the refrigerator from the power supply.
2. Remove the protective casing from the thermostat (usually located inside the refrigerator compartment or on the top panel).
3. Test the contacts with a multimeter in resistance testing mode. At room temperature, the resistance should be 0 Ohm (contacts closed).
4. If the resistance is infinite, the thermostat is faulty.

Replacement cost:

• 🔧 Thermostat for Atlant/Stinol: 800–1,500 rub.
• 🔧 Temperature sensor for Samsung/LG: 1,200–2,500 rub.
• 🔧 Replacement with on-site technician: +1,500–3,000 rub.

1. Disconnect the refrigerator from the network

2. Find the sensor (usually in a plastic case on the back wall)

3. Disconnect the connector and test with a multimeter

4. Compare the readings with the nominal value (indicated in the instructions) -->

5. Capillary tube clogged: why the cold does not reach the top

The capillary tube is a thin copper channel through which freon enters the evaporator of the refrigerator compartment. If it becomes clogged (for example, due to moisture or oil), cold stops flowing into the upper chamber, although the freezer is working normally.

Causes of clogging:

• 🛢️ Oil ingress from compressor (typical for old refrigerators).
• 💧 Humidity in the system (if the refrigerator was left unplugged for a long time).
• 🔧 Errors when filling freon (if repairs were previously carried out).

How to determine the blockage:

• The compressor works, but the refrigerator compartment does not cool.
• The condenser (grid at the back) is hot only at the bottom, and cold at the top.
• After turning off the compressor, gurgling is heard in the tubes (freon cannot pass through).

What do:

⚠️ Attention! Cleaning the capillary tube requires special equipment (hydraulic press, nitrogen). Self-repair can lead to complete failure of the refrigerator due to depressurization of the system. Average cost of cleaning in the service: 5,000–9,000 rubles.

6. Malfunction of the magnetic valve (in single-compressor models)

In refrigerators with one compressor (for example, Indesit BIAA 13 or BEKO CNK 335520) the magnetic valveis responsible for the distribution of cold between the chambers. It switches the freon flow either to the freezer or to the refrigerator. If the valve is jammed or its winding is burned out, cold will only flow into the freezer.

Signs of valve malfunction:

• 🔄 The refrigerator compartment does not cool, the freezer operates “at maximum.”
• 🔊 The compressor turns on less often than usual (the valve does not give a signal to cool the top).
• 📉 The temperature in the freezer is below –20°C (the compressor “freezes” it).

How to check valve:

1. Disconnect the refrigerator from the network.
2. Find the valve (usually attached to the compressor, has 2-3 tubes and an electrical connector).
3. Test the winding with a multimeter. The resistance should be 100–500 Ohm (the exact values are in the instructions for the model).
4. If there is no resistance, the valve is burned out.

Repair cost:

• 🔧 Replacement of the magnetic valve: 2,500–5,000 rubles.
• 🔧 On-site diagnostics: 1,000–1,500 rubles.

Is it possible to temporarily do without the valve?

Technically yes, but not recommended. If the valve is stuck in the “freezer” position, you can manually switch it to the refrigerator compartment (by carefully moving the rod with a screwdriver). However, this is a temporary solution - without repair the problem will return.

7. User errors: 3 simple reasons that can be easily eliminated

Sometimes the upper chamber does not cool not because of a breakdown, but because incorrect operation. Check these points before calling a technician:

Frequent errors:

• 🚪 The door is not closed tightly. Check the seal: if it is dirty or deformed, the cold will escape. Wipe the rubber band with soapy water or replace it (the cost of a new seal: 1,000–2,500 rubles).
• 🌡️ Incorrect temperature setting. In some models (for example Samsung RB-30 J3200SA), the refrigerator compartment may turn off if the freezer mode is set to Super Freeze. Turn it off and check the temperature after 6-8 hours.
• 🍲 Overload with products. If the refrigerator compartment is packed to capacity, air does not circulate. Remove excess and check after 2-3 hours.

How to check the seal:

1. Close the door and insert a sheet of paper between the seal and the body.
2. If the sheet falls out or is easily pulled out, the seal not airtight.
3. Inspect the rubber band for cracks or deformations.

Attention! If the seal is covered with mold, it must not only be replaced, but also disinfect the chamber with a solution of vinegar (1:1 with water), otherwise the smell will remain even after repair.

FAQ: Frequently asked questions about the top of the refrigerator not working

Is it possible to use the refrigerator if the top chamber does not work and the freezer is freezing?

Short-term (1-2 days) - yes, but only if the compressor does not work for wear and tear (not It gets very hot and does not make any noise louder than usual). Long-term operation in this mode will lead to:

• Failure of the compressor (replacement cost: 6,000–12,000 rubles).
• Deterioration of food in the freezer (due to unstable temperature).
• Leakage of freon (if the cause is a blockage or a crack).

It is better to immediately defrost the refrigerator and try to fix the problem.

How much does it cost to repair if the top of the refrigerator does not work, but the freezer works?

The cost depends on the cause:

Problem	Price (RUB)
Fan replacement	1 500–3 000
Cleaning No Frost	2 000–4 000
Freon leakage + refill	4 000–10 000
Replacement of magnetic valve	2 500–5 000
Unit repair controls	3 500–8 000

If the refrigerator is more than 10 years old, sometimes it is cheaper to buy a new one (especially if the compressor has burned out).

How to defrost a No Frost refrigerator if the fan does not work?

Instructions:

1. Unplug the refrigerator.
2. Take out all the food and shelves.
3. Open all doors (including the freezer).
4. Place a tray to collect water.
5. To speed up defrosting, use a hairdryer (only at minimum power and at a distance of 30 cm!).
6. After 8-12 hours, remove the remaining ice with a plastic spatula.
7. Wipe all surfaces with a dry cloth and turn on the refrigerator.

If the fan does not work after defrosting, a replacement is needed.

Why does the top of the refrigerator not work after defrosting? cools?

Possible reasons:

• The fan is still blocked by ice (needs to be defrosted longer).
• The defrost heating element has burned out (replacement is required).
• The temperature sensor has failed (being checked multimeter).
• Problems with the magnetic valve (in single-compressor models).

If after 24 hours of defrosting the problem remains, call a specialist.

Can I fill freon into the refrigerator myself?

No. To refill freon you need:

• Special equipment (vacuum pump, pressure gauges, cylinder with freon).
• Experience in working with refrigerants (freon is toxic and explosive if handled incorrectly).
• Knowledge of the exact dosage (excess freon is as harmful as its shortage).

Independent refilling can lead to:

• Compressor breakdown.
• Leakage of freon into the room (hazardous to health).
• Depressurization of the system (repair will cost 2-3 times more).