The situation when the lower chamber of the refrigerator is freezing, and the upper one has stopped coolingis familiar to many owners of equipment with a No Frost or drip defrosting system. The problem may appear suddenly: the food in the freezer remains frozen, but in the main compartment the milk spoils, the butter melts, and condensation appears on the walls. Most often, this is not a breakdown of the compressor (otherwise not a single compartment would work), but a malfunction in the cold distribution system.
In this article we will look 7 main reasonswhy the refrigerator does not freeze from above, but it functions normally from below. You will learn how to independently diagnose a problem - from trivial clogged drainage to serious malfunctions fan or temperature sensor. We will also give step-by-step instructions on what to do in each case: from simple defrosting to replacing parts. If you are not confident in your abilities, at the end of the article we will tell you when to call a technician and how much it will cost.
⚠️ Attention! If your refrigerator is equipped with a system Full No Frost (for example, model Samsung RB37J5240SA or LG GA-B489YQQZ), a fan malfunction can lead to icing of the evaporator within 12-24 hours. In this case, delay is fraught with failure of the compressor.
1. Clogged drainage hole or channel
One of the most common reasons why the upper chamber does not cooland the bottom freezes is clogged drainage system. In refrigerators with drip defrosting (for example, Indesit DF 4200 W or Atlant XM 4021-000), the condensate flows down the back wall into a special hole, and then is discharged into a tray above the compressor. If this channel is clogged with crumbs, mold or ice, moisture accumulates inside the chamber, forming ice on the evaporator.
How does this affect cooling? Ice blocks air circulation, and the cold from the evaporator (which is usually located between the chambers) does not enter the upper compartment. At the same time the freezer continues to work, since its cooling does not depend on the drainage of the main chamber.
Signs of blockage:
- 💧 Puddles of water under the drawers for vegetables/fruits.
- ☁️ Constant smell of dampness in the refrigerator.
- ❄️ Ice on the back wall of the upper chamber.
- 🌡️ The temperature in the main compartment is above +8°C, despite the working freezer.
To fix the problem, enough clean the drain. To do this:
- Unplug the refrigerator.
- Remove all food and shelves from the upper chamber.
- Find a drainage hole (usually at the bottom of the back wall) and carefully clean it with a cotton swab or a special brush (included with some models, for example, Bosch KGN39XL30R).
- Rinse the channel with warm water and soda (1 tablespoon per 200 ml) using a syringe.
Unplug the refrigerator from the outlet
Remove products and shelves
Clean the hole with a cotton swab or brush
Rinse the channel with a soda solution
Dry the chamber for 1–2 hours-->
2. Fan malfunction No Frost
In refrigerators with a system No Frost (for example, Samsung RL-44 QEBS, Liebherr CN 4015) the fan is responsible for the distribution of cold. It drives air through the evaporator, cooling both chambers. If the fan breaks or its blades freeze, the cold stops flowing into the upper compartmentand the freezer continues to work (since the compressor is working).
How to check the fan:
- Turn off the refrigerator and defrost it for 10-12 hours.
- After defrosting, turn on the equipment and listen: if the fan is working, you will hear a slight buzzing from the back of the chamber.
- If there is no sound, most likely the motor the fan is burned out or jammed.
Causes of fan failure:
- ❄️ Icing of the blades due to a malfunction of the defrost heater.
- 🔌 Burnout of the motor winding (often occurs after a power surge).
- 🛠️ Mechanical damage to the blades (for example, due to careless cleaning).
If the fan does not spin even after defrosting, it will have to be replaced. In most models (Whirlpool ARC 5920, Electrolux ERN 1200 FOW) this can be done independently by purchasing a spare part according to the article number (indicated on the motor sticker). 1,500 to 3,500 rubles.
How to get to the fan in the No Frost refrigerator
1. Remove the back panel in the freezer (usually attached to 4-6 screws).
2. Under the panel you will see a fan - it looks like a small turbine with blades.
3. Disconnect the power connector and unscrew the fastening screws (usually 2-3 pieces).
4. Install the new fan in the reverse order.
3. Damage to the upper chamber temperature sensor
In modern refrigerators for adjustment. temperatures respond sensors (thermistors). If the sensor in the upper chamber fails, the control module stops receiving correct data and “thinks” that it is cold enough there. As a result, the compressor works at half capacity, and the freezer freezes, but the refrigerator does not. data-i="123">Symptoms of a faulty sensor:.
Symptoms of a faulty sensor:
- 📉 The temperature in the upper chamber rises to +15°C and above.
- 🔄 The compressor turns on rarely or operates in short cycles.
- 🚨 An error may appear on the display (for example,
E1orH1y Beko,OFy Gorenje).
You can check the sensor with a multimeter:
- Turn off the refrigerator and find the sensor (usually it is located behind the plastic panel in the top camera).
- Disconnect the connector and measure the resistance of the sensor at room temperature (should be ~5–7 kOhm).
- Immerse the sensor in a glass of cold water - the resistance should change (for example, to 10–12 kOhm).
If the readings do not change or the sensor “in break", it needs to be replaced. The cost of the thermistor is from 300 to 1,200 rubles. In refrigerators Samsung and LG sensors often fail after 5-7 years of operation due to oxidation of the contacts.
4. Freon leakage or blockage of the capillary tube
If The freezer is freezing, but the refrigerator is not coolingpossible refrigerant leak (freon) or blockage in the circulation system In this case, the compressor works without stopping, but the cold does not enter the upper chamber, since the freon does not reach the evaporator.
Signs of a freon leak:
- ⏳ The compressor runs constantly without turning off.
- 🔥 Housing The refrigerator gets very hot (especially at the bottom back).
- ❄️ In the freezer, the temperature is below normal (for example, -25°C instead of -18°C).
- 💨 The condenser (grid at the back) remains cold.
It is impossible to eliminate the leak on your own - special equipment is required to vacuuming and refilling freon. Average repair cost:
| Type of fault | Cost of work (₽) | Cost of spare parts (₽) |
|---|---|---|
| Freon leakage (refilling) | 3 000–5 000 | 1,500–3,000 (freon + oil) |
| Clogged capillary tube | 4 000–6 000 | 500–1,500 (filter drier) |
| Replacing the evaporator | 6 000–10 000 | 4 000–8 000 |
⚠️ Attention! If the leak occurs due to corrosion of the tubes (often happens in refrigerators Stinol or Biryusa over 10 years), repair may not be practical - it is cheaper to buy new equipment.
5. Malfunction of the solenoid valve
In two-compressor refrigerators (for example, Samsung RT-43 K6230S8, Indesit ITF 118 W) the solenoid valveis responsible for switching cooling between chambers. If it jams or burns, cold can only enter the freezer, and the upper chamber will remain warm.
How to check the valve:
- 🔊 When switching modes (for example, with
Super FreezeonSuper Coola click should be heard. - 📊 If the valve is faulty, the compressor runs without pauses, but the upper chamber does not cool.
Replacing the valve will cost 2,500–4,000 rubles (including labor). In some models (Atlant, Nord) the valve is built into the compressor, and you have to change the entire assembly.
6. Problems with the door seal
If sealing rubber the upper chamber door is worn out or deformed, warm air constantly enters the refrigerator. The compressor does not have time to compensate for the loss of cold, and the temperature in the chamber rises. At the same time the freezer continues to freeze, since its door is sealed.
How to check the seal:
- Close the door and try insert a piece of paper between it and the body.
- If the sheet falls out easily, the seal does not fit tightly.
- Inspect the rubber band for cracks, tears or traces of mold.
Solution:
- 🧼 Wipe seal with soda solution (1 tablespoon per 1 liter of water) - sometimes it sticks due to grease or dirt.
- 🔥 Warm the deformed areas with a hairdryer (temperature 50–60°C) and shape the elastic band.
- 🛠️ If the seal is torn, replace it (the cost of a new rubber band is 1,000–3,000 rubles).
7. Failure in the electronic control module
In electronically controlled refrigerators (LG GA-B429 SLGL, Samsung RB-30 J3200EF) it is responsible for the distribution of cold control board. If it fails (due to a power surge, moisture or a manufacturing defect), one of the cameras may malfunction.
Symptoms of a module malfunction:
- 🖥️ The display shows an incorrect temperature (for example, -5°C in a refrigerator at real +12°C).
- 🔄 Modes turn on spontaneously (for example,
Vacationinstead ofNormal). - 🚨 Errors appear
Er IF(y Indesit),E4(y Atlant).
It is difficult to repair the board yourself - you need soldering equipment and circuits. In most cases, it is easier to replace it (the cost of a new board is 5,000–12,000 rubles). Sometimes it helps reflashing, but only specialists can do this.
⚠️ Attention! If the refrigerator is connected through a surge protector or stabilizer, but the module still burned out - check the socket. Perhaps the problem is in the wiring of the apartment, and not in the equipment.
When to call technicians: 3 cases when amateur performance is dangerous
Some breakdowns can be repaired on your own (cleaning the drainage, replacing the seal), but there are situations when calling a specialist is mandatory:
- Freon leak. Without special equipment, it is impossible to refill the refrigerant. lead to compressor breakdown.
- Clogged capillary tube. For cleaning, you need a hydraulic press and a vacuum pump. Incorrect actions can damage the circuit.
- Compressor malfunction. If the motor hums but does not start, or the refrigerator turns off 5-10 seconds after start, the cause may be an interturn short circuit. Diagnostics requires disassembling and checking the windings.
Average cost of a technician in Moscow and the regions:
- 📍 Diagnostics - 1,000–1,500 rubles (sometimes free when ordering repairs).
- 🛠️ Replacement of a compressor - 5,000-8,000 rubles (plus the price of the part).
- ❄️ Elimination of freon leaks - 3,500-6,000 rubles.
💡 Tip: Before the technician’s visit, defrost the refrigerator and prepare access to the back wall (move 50–60 cm from the wall. This will save time and money.
FAQ: Frequently asked questions about the non-working upper chamber
❓ Why does the top of the refrigerator not freeze, but the bottom works? No Frost the top doesn't freeze, but the bottom works?
In 90% of cases, this is due to freezing of the fan or a malfunction of the defrost heater. Defrost the refrigerator for 12-24 hours. If the problem persists, check the fan (it should be spinning) and the defrost sensor (call). multimeter).
❓ Can the refrigerator not cool from above due to the freezer being overloaded?
Yes, if the freezer is filled to capacity with food, the compressor cannot cope with the load and “gives” all the cold downwards and turn on the mode Super Cool to 2-3. hours.
❓ How long can the refrigerator be used if the top is not freezing?
If the freezer is working and the temperature in the main compartment does not rise above +10°C, the equipment can last another 1-2 weeks (provided the door is rarely opened), however, the risk of compressor damage increases every day - it is better to eliminate the problem as soon as possible. rather.
❓ Why, after defrosting, the refrigerator does not cool from above?
Probably, during defrosting, a freon leak occurred (if you used a hair dryer or sharp objects to remove ice) or the defrost heater burned out. Check for oil stains under the refrigerator - this is a sign of a leak.
❓ How to temporarily store food if the refrigerator does not freeze on top?
Transfer perishable foods (meat, fish, dairy) to the freezer, having previously packed them in airtight containers. Vegetables and fruits can be kept in a cool place (for example, on the balcony, if it is not hot outside) Do not store food like this for longer than 2-3 days!