Have you opened the refrigerator, but the upper chamber is warm, the food is spoiling, and the motor is running non-stop? Or vice versa, the compressor is silent and the indicators are on? Problems with the upper chamber in two-chamber models (Indesit, Samsung, ATLANT, LG etc.) are more common than it seems. In 65% of cases, it is not breakdowns that are to blame, but simple operating errors or settings failures. But how can you distinguish a “trifle” that you can fix in 10 minutes from a serious malfunction that requires the intervention of a technician?
In this article - analysis of all possible causeswhy the upper chamber does not cool, does not freeze, or does not turn on at all. We will analyze the symptoms in detail (from the absence of cold to the constant operation of the compressor), give step-by-step instructions for self-diagnosis and indicate in which cases do-it-yourself repair is dangerous. We’ll also reveal secret “5-minute test”which will help determine whether the thermostat is broken without disassembling the refrigerator.
Spoiler: in 30% of cases the problem is solved by simply defrosting or resetting the settings. But if your refrigerator displays an error E1, H1 or F5 , this is a signal of a malfunction of the electronic module, and you can’t do without a specialist. Next, let's look at everything in order.
1. The upper chamber does not cool, but the light is on: first checks
If the temperature in the upper chamber is positive and the power indicators are working, start with basic checks. In 40% of cases, the problem lies in temperature settings, clogged drainage or a loosely closed door.
First, make sure that cooling mode is on. In models with electronic control (Samsung RB30J3000, LG GA-B489), check the display: perhaps the top camera is turned off by the button Fridge Off or switched to Vacation (vacation) mode. In mechanical refrigerators (ATLANT MXM 2835), turn the thermostat knob to position 2-3 - if it is on 0, the compressor will not supply cold to the upper chamber.
Secondly, look sealing rubber on the door. Over time, it becomes deformed, and warm air penetrates inside. Do the “sheet of paper test”: close the door by inserting a sheet of paper between the rubber band and the body. If the sheet is easily pulled out, it’s time to change the seal. In models Indesit C132G and Beko CNK 335120 this problem occurs especially often due to thin rubber.
- 🔍 Check the settings: mode
Super CoolorFast Freezecan disable the top camera. - 🚪 Door test: if the seal does not hold, the refrigerator will “drive” the cold idle.
- ❄️ Defrost: ice on the back wall blocks air circulation - complete defrosting is required for 12-24 hours.
2. The compressor works without stopping, but the upper chamber is warm: is the thermostat or sensor to blame?
If the motor hums constantly and the upper chamber does not cool, most likely the problem is temperature control system. There are two “suspects” here: thermostat (in mechanical models) or temperature sensor (in electronic).
B refrigerators with mechanical control (Biryusa 145, Snaige FR320) the thermostat is responsible for turning the compressor on/off. If it breaks, the compressor either does not turn off at all or does not turn on. It’s easy to check: turn the thermostat knob —if there is no click, the part is faulty. In models ATLANT thermostats often “stick” due to power surges.
B electronic refrigerators (Samsung RL38, LG GB-B399) the sensor is responsible for the temperature. If it lies, the control module receives incorrect data and does not give a command to cool. Carry out a test: turn off the refrigerator for 10 minutes, then turn it on and immediately set the minimum temperature (+2°C). If after 30 minutes the compressor does not turn off, the sensor or control board is faulty.
| Symptom | Probable cause | How to check |
|---|---|---|
| The compressor runs constantly, the upper chamber is warm | Faulty thermostat (mechanical) or sensor (electronics) | Turn the thermostat knob / reset settings |
| The compressor does not turn on, there is light | Thermostat or start relay is burnt out | Ring with a multimeter |
| The upper chamber is warmer than the lower chamber by 10°C+ | Clogged capillary tube or freon leak | Touch the condenser (cold = leak) |
⚠️ Attention: If the compressor is hot and does not turn off for more than 2 hours, immediately unplug the refrigerator! Overheating of the motor can lead to an interturn short circuit and a complete replacement of the compressor (cost - from 8,000 ₽).
3. The upper chamber does not freeze, but the lower one works: problems with the No Frost system
In refrigerators with a system No Frost (Samsung RL-44, LG GA-B429, Bosch KGE39XW20R), cold is supplied to the upper chamber through fan and air channels. If they are clogged with ice or dust, circulation stops and the upper chamber stops cooling.
The first sign of a problem is the fan is not spinning. Open the refrigerator and listen: in normal mode you should hear a slight buzzing sound. If there is silence, check:
- 🌨️ Ice on the evaporator: defrost the refrigerator for 24 hours (in models Indesit and Ariston No Frost often “freezes” due to a faulty defrost heating element).
- 🌀 Clogged air duct: clean the channels between the chambers with a vacuum cleaner or soft brush.
- 🔌 Fan malfunction: if after defrosting it does not start, replacement is required (part price - from 1,500 ₽).
In models with complete No Frost (for example, Samsung RB37J5200) the problem may lie in faulty defrost heating element. If it does not heat, the evaporator freezes and the fan is blocked by ice. You can check the heating element with a multimeter: the resistance should be in the range of 200–500 Ohms. If the device shows “1” (break), the part must be replaced.
☑️ Diagnostics No Frost
4. The upper chamber does not turn on at all: electrical and electronics
If the upper chamber does not show signs of life (no light, the display does not work, the fan cannot be heard) - the problem is power supply or electronic module. Start by checking:
- 🔌 Socket and power cord: connect the refrigerator to another socket - perhaps the circuit breaker in the panel has tripped.
- ⚡ Fuse: in models ATLANT and Stinol it is located on the compressor (black box with wires). If the fuse is blown, replace it with a similar one (cost - 100–300 ₽).
- 📱 Electronic module: if the refrigerator gives an error
E1,ERorFF— reset the settings (turn off for 10 minutes) or flash the board (a master is required).
In refrigerators with two compressors (Liehberr CNef 4315, Beko GNE 114120) the upper chamber may not work due to malfunction of a separate motor. It’s easy to check: if the compressor doesn’t heat up or vibrate, it’s burned out. Replacement will cost 6,000–12,000 ₽.
⚠️ Attention: If after a power surge the refrigerator stops turning on, DO NOT try to repair the electronic module yourself! In 80% of cases this leads to complete failure of the board. Contact the service - flashing is cheaper than replacement (from 2,500 ₽ versus 8,000 ₽).
How to reset an error on an electronic display?
Press and hold the buttons Power Cool + Power Freeze (or Fridge + Freezer) for 10 seconds. If the error remains, diagnostics of the master is required.
5. Freon leak or clogged capillary tube: how to recognize
If the compressor is running, but the upper chamber does not cool, and the condenser (grid at the back) remains cold - this is a sign freon leaks or clogging in the system. In this case, DIY repair is impossible: it requires vacuuming and refilling (cost - from 3,500 ₽).
How to recognize a leak:
- ❄️ The condenser does not heat up: in normal mode it should be warm (40–50°C).
- 🛠️ Oil stains: inspect the places where the tubes are soldered - if there are traces of oil, freon has leaked.
- 🔊 Noise in the compressor: When the capillary tube is clogged, the motor operates with overload (a hum or knock is heard).
In models Indesit i Ariston leaks often occur in freezer evaporator its aluminum tubes corrode over time. The Samsung i LG weak point is compressor soldering pointswhich crack from vibration.
⚠️ Attention: If you suspect a freon leak, DO NOT turn on the refrigerator for a long time without refrigerant! Idle operation leads to overheating of the compressor and its breakdown. The maximum diagnostic time is 10 minutes.
6. The upper chamber works, but does not cool well: 3 unobvious reasons
Sometimes the upper chamber “works”, but the temperature in it remains at +10...+15°C. The reasons may not be obvious:
- Overload with products. If the shelves are packed to capacity, air circulation is disrupted. In models No Frost this leads to freezing of the evaporator. Solution: unload the chamber and defrost the refrigerator.
- Incorrect installation. If the refrigerator is located close to the wall or battery, the condenser overheats, and the cooling efficiency drops. Normal: gap 5-10 cm on all sides.
- Wear of the door seal. Even a small gap increases the load on the compressor. Carry out a test with a flashlight: in the dark, shine the light inside a closed refrigerator - if light is visible, it’s time to change the seal.
In refrigerators with one compressor (ATLANT MXM 170, Beko CS 310020) the upper chamber may not cool well due to improper refrigerant distribution. If the freezer is working normally and the refrigerator is warm, check magnetic valve (responsible for switching the freon flow). Its malfunction is a common problem in models older than 5 years.
7. When to call a technician: critical diagnostics
Not all breakdowns can be fixed on your own. Contact service immediatelyif:
- 🔥 The compressor does not turn on, but there are lights and sound signals (probably the relay is burnt out or motor).
- ⚡ The refrigerator is electrocuted or sparks (a breakdown on the body is life-threatening!).
- 💧 There is a puddle on the floor, and there is a snow “coat” in the chamber (freon leakage + freezing of the evaporator).
- 📛 On the display errors
E5,F1,dH(failure of the electronic module).
The cost of repair depends on the breakdown:
| Breakage | Cost of repair (₽) | Operation period |
|---|---|---|
| Replacing the thermostat | 1 500–2 500 | 30–60 min |
| Repairing the electronic module | 3 000–6 000 | 1–2 days |
| Freon charging + leak repair | 4 500–8 000 | 2–4 hours |
| Replacing the compressor | 8 000–15 000 | 3–5 hours |
In models premium class (Liehberr, Miele) repairs cost 20–30% more due to the high cost of spare parts. If your refrigerator is more than 10 years old, consider buying a new one: repairs can cost 50–70% of the price of new equipment.
FAQ: Frequently asked questions about the upper chamber not working
Can I use the refrigerator if the upper chamber does not work?
If the freezer is working - yes, but only temporarily (up to 1–2 weeks). Long-term operation with a faulty upper chamber leads to:
- Overload of the compressor (risk of breakdown).
- Increased energy consumption (by 30–50%).
- Freezing of the evaporator (in models No Frost).
If the problem is a leak freon - it is better to turn off the refrigerator: operation without refrigerant is detrimental to the compressor.
Why does the upper chamber work, but the lower one does not (or vice versa)?
In refrigerators with one compressor the cold is distributed through magnetic valveIf it is jammed, freon goes only to one chamber. In models with two compressors (Beko GNE 114120, Liehberr CNef 4315) a malfunction of one motor leads to failure of the corresponding chamber.
How to check: if the freezer freezes, but the refrigerator does not, the problem is in the valve or leak in the upper chamber circuit. If both chambers are warm, the compressor or relay has burned out.
How much does it cost to diagnose a refrigerator at home?
Cost of a technician in Moscow and the regions:
- Diagnostics — 500–1 500 ₽ (free if you order repairs).
- Departure on the day of application - +500–1 000 ₽.
- Work on weekends - +1 000–2 000 ₽.
In service centers Samsung i LG Fixed tariffs apply (for example, replacing a thermostat - 2,200 ₽ with a spare part). In private workshops, prices are lower, but the risk of running into poor-quality repairs is higher.
Is it possible to fill a refrigerator with freon yourself?
Theoretically, yes, but in practice it is dangerous and ineffective. For refueling you need:
- Vacuum pump (cost - from 5,000 ₽).
- Gauge manifold (from 3,000 ₽).
- Cylinder with freon (1,500–3,000 ₽).
- Experience in soldering copper tubes.
Errors during refueling lead to:
- Excess of freon (the compressor will burn out in 1-2 months).
- Lack of freon (the refrigerator will not freeze).
- Moisture entering the system (corrosion of tubes).
Conclusion: if you do not have experience, entrust the refilling to a professional.
How often do you need to defrost a No Frost refrigerator?
Manufacturers claim that No Frost does not require defrosting. In practice:
- Once every 6–12 months —for prevention (removing dust, checking drainage).
- Immediately—if ice appears on the back wall or the fan begins to make noise.
- After a long shutdown (for example, when moving).
In models Indesit i Ariston s No Frost the drainage hole is often clogged, which leads to the accumulation of water in the lower chamber. Clean it with a wire every 3 months.