Have you bought a new refrigerator, but instead of the expected silence, it works non-stop, hums like a plane on takeoff and does not turn off even at night? This problem occurs more often than it seems - according to statistics from service centers, up to 15% of requests in the first month of operation are associated precisely with the continuous operation of the compressor. The reasons can be both harmless (incorrect installation) and critical (refrigerant leak or manufacturing defect).
In this article we will analyze all possible reasonswhy the new refrigerator does not turn off - from user errors to hidden defects. You will learn how to independently diagnose the problem, when it is worth calling a technician, and in which cases it is enough to rearrange the equipment or change the settings. We will pay special attention to models with the No Frost system: their continuous operation is often associated with icing of the evaporator, which is not visible from the outside.
Important: if the refrigerator does not it just works for a long time, and also does not freeze, overheats or makes strange sounds (knocking, grinding) - these are signs of a serious malfunction. In such cases, immediately disconnect it from the network and call a specialist.
1. Primary diagnosis: normal or malfunction?
Before you panic, check whether the refrigerator should really turns off in your case. Modern models (especially with energy consumption class A+++) can work up to 8-12 hours in a row in the following situations:
- 🔹 First switch on. After connecting to the network, the refrigerator reaches the temperature in the chambers. Depending on the volume and workload, this may take from 2 to 24 hours. For example, Samsung RB37A5200SA or LG GA-B489YDQL in mode
Super Coolingdo not turn off until 10 hours. - 🔹 Hot room. If the temperature in the room is higher
+30°C, the compressor works more intense. In the southern regions, this is a normal phenomenon in the summer. - 🔹 Frequent opening of the door. Each time you open the chamber, warm air enters, and the refrigerator needs time to restore the temperature.
- 🔹 Vacation or Freeze mode. In these modes, the equipment works almost continuously to maintain extreme low temperatures.
How to understand that the refrigerator accurately is faulty?
- 🚨 Works more than 24 hours without pauses (even at night).
- 🚨 Body hot (especially on the back or sides).
- 🚨 In the freezer no ice, and in the refrigerator it does not cool.
- 🚨 You can hear extraneous sounds: gurgling, hissing, grinding.
2. Installation errors: why the refrigerator “chokes”
Before 40% of cases continuous operation are associated with incorrect installation. Manufacturers (for example, Bosch, Indesit, Atlant) clearly regulate operating conditions, but users often ignore them. Here are the most common errors:
| Error | Consequences | How to fix |
|---|---|---|
| Too close to the wall (less than 5 cm) | Overheating of the compressor, protection activation | Move the refrigerator 10–15 cm |
| Next to the battery or stove | The compressor is wearing out, increased energy consumption | Rearrange in a cool place or install a heat-reflecting screen |
| Uneven floor (misalignment more than 2°) | Incorrect closing of the door, cold leakage | Adjust the legs to the level |
| Direct sunlight | False activation of temperature sensors | Close the curtains or rearrange the refrigerator |
How to check the ventilation? Put your hand to the back wall of the refrigerator. If the air flow is weak or absent, it means that the ventilation grilles are clogged with dust or blocked. In models with No Frost (for example, Liebherr CNef 4315) this leads to icing of the evaporator and system failure.
Distance to the wall ≥10 cm|
Temperature in the room ≤25°C|
No direct sunlight|
The refrigerator is level (check with level)|
Ventilation grilles are not blocked-->
⚠️ Attention: If the refrigerator is installed in a niche or built into furniture, make sure that there are gaps for air circulation. Otherwise, the compressor will overheat and the warranty may be void (check the conditions in the product data sheet).
3. Malfunctions of the thermostat and temperature sensors
The thermostat (or electronic control unit in modern models) is the “brain” of the refrigerator, which decides when to turn the compressor on and off. If it breaks, the equipment either does not turn off at all, or, conversely, does not turn on. Symptoms of a thermostat malfunction:
- 🔧 The compressor works continuously, but the temperature in the chambers does not drop to the set one.
- 🔧 Refrigerator turns off too often (every 5-10 minutes).
- 🔧 The display shows an error (for example,
E1,F2orHat Samsung,AL01at LG).
How to check the thermostat?
- Disconnect the refrigerator from the mains.
- Remove the protective cover (in mechanical models it is usually located inside the refrigerator compartment).
- Find the thermostat - this is a small box with a tube attached to the evaporator.
- Ring the contacts with a tester: at room temperature they should be closed, and when cooled (for example, if you put the thermostat in the freezer for 10 minutes) - opened.
In electronic refrigerators (for example, Beko GNE114620X or Haier C2F636CWG) instead of a mechanical thermostat, temperature sensoris used. equipment, so it is better to call a specialist.
⚠️ Attention: If you are not confident in your skills in working with electricity, do not disassemble the refrigerator yourself! This may lead to loss of warranty or even a short circuit.
4. compressor: when repairs are needed
The compressor is the “heart” of the refrigerator, which pumps refrigerant through the system. If it works without stopping, the following malfunctions are possible:
- 🛠️ Wear or jamming. In new refrigerators this is unlikely, but possible when factory defects (for example, in batches Indesit DF 4180 W 2023 model year there were cases of defective compressors).
- 🛠️ Insufficient refrigerant pressure. If there is little freon, the compressor tries to “catch up” the cold, but cannot reach the desired temperature.
- 🛠️ Overload. This happens if the refrigerator overloaded with products or door does not close well (for example, due to a worn seal).
- 🛠️ Failure in the start-up relay. This is a small box next to the compressor, which is responsible for turning it on/off. If it breaks down, the compressor may “spin” or work without pauses.
How to understand that the compressor is to blame?
- 🔊 It hums louder than usual (like a transformer booth).
- 🔥 Housing in the compressor area very hot (more
+60°C). - ❄️ Freezer compartment does not freeze well, and the refrigerator is too warm.
In most cases, repairing the compressor impractical is easier to replace the cost of a new part for models Atlant or Stinol starts from 8,000 rubles, for premium brands (Liebherr, Miele) - from 20,000 rubles. If the refrigerator is under warranty, the replacement should be done free of charge.
What will happen if you do not repair the compressor?
Without timely repairs, the compressor may completely fail, which will lead to a refrigerant leak and the need to completely recharge the system. In the worst case, this will result in the purchase of a new refrigerator, since the cost of a major repair will exceed 70% of the price of the equipment.
5. Freon leakage: a hidden threat to the refrigerator
Freon (refrigerant) circulates through the refrigerator tubes, providing cooling. If there is a microcrack somewhere, the gas gradually evaporates, and the compressor begins to run “idle”, trying to catch up with cold. Signs of a leak:
- ❄️ Refrigerator compartment cools poorly, and the freezer. — freezes (or vice versa).
- 🔧 The compressor works continuously, but the temperature does not drop to the set temperature.
- 💧 On the back wall of the refrigerator condensation appears or oil (in case of serious damage to the tubes).
Where does leakage most often occur?
- 🔹 In places where tubes are soldered (especially in models with a bottom freezer, for example, Samsung RB-30 J3200SA).
- 🔹 In the evaporator (if it is damaged during defrosting).
- 🔹 In the door heating circuit (in refrigerators with No Frost).
Repair the leak yourself impossible - requires special equipment for vacuuming and refilling freon. Average cost of repair:
| Type of repair | Cost (₽) | Timeframe |
|---|---|---|
| Leak diagnostics | 1 500–2 500 | 30–60 minutes |
| Replacing the evaporator | 5 000–12 000 | 2–4 hours |
| Freon refilling (up to 100 g) | 3 000–6 000 | 1–2 hours |
| Soldering pipes | 2 000–4 000 | 1 hour |
⚠️ Attention: If the refrigerator is under warranty, do not agree to refill freon in uncertified workshops. This may void the warranty. Contact only. authorized service centers.
6. Failures in the electronic control unit
In refrigerators with electronic control (for example, LG DoorCooling+, Samsung Family Hub) the control board is responsible for the operating cycle. If it fails, the compressor may:
- 🔄 Work without stopping.
- 🔄 Turn on and turn off instantly (protection is triggered).
- 🔄 Not respond to temperature settings.
Causes of board failure:
- 🔌 Power surges. If there are frequent fluctuations in your network, install a stabilizer (for example, Resanta ACH-1000/1-C).
- 💦 Moisture ingress. Condensation can close the contacts (relevant for refrigerators installed in damp rooms).
- 🛠️ Manufacturing defect. Occurs in new models (for example, in batches Haier A3FE742CGMJ 2026 there were cases of defective boards).
How to diagnose? If an error appears on the display (for example, ER IF y Indesit or dH y Samsung), this is a sure sign of a problem with the electronics. Try resetting. settings:
- Disconnect the refrigerator from the network for 10 minutes.
- Plug it back in and check if the error persists.
- If yes, flashing or replacing the board is required.
Cost of repairing the control board:
- 💰 Re-flashing: 2 000–4 000 ₽.
- 💰 Board replacement: 5 000–15 000 ₽ (depending on the model).
7. Problems with the No Frost system: evaporator icing
Refrigerators s No Frost (for example, Bosch KGE39XW2AR, Electrolux ERN 1400 FOW) do not require defrosting, but their ventilation system can become clogged with ice. This occurs due to:
- ❄️ Heater malfunction. evaporator. It must be turned on periodically to melt the ice.
- ❄️ The drainage hole is clogged. The water does not drain, freezes and blocks the fan.
- ❄️ Failure of the defrost sensor. It does not give a command to turn on the heater.
How to check?
- Disconnect the refrigerator from the mains.
- Defrost it for 12-24 hours (open all doors).
- After turning on listen: if the fan does not make noise, it means the ice has not yet melted or the system is clogged.
If the problem returns after defrosting, professional cleaning of the evaporator or replacement of the heater is required:
| Service | Cost (₽) |
|---|---|
| Cleaning the evaporator | 2 500–4 000 |
| Replacing the No Frost heater | 3 000–6 000 |
| Replacing the defrost sensor | 1 500–3 000 |
8. When to call the service: checklist before calling a technician
If you have checked all the possible reasons, but the refrigerator still does not turn off, it’s time to contact the professionals. To save time and money, prepare the following information:
Make and model of the refrigerator (located on the sticker inside or on the back)|
When it started working without stopping (immediately after purchase/a week/month)|
Are there any errors on the display (take pictures of them)|
Temperature in the refrigerator and freezer compartments (measure with a thermometer)|
Warranty card (if the refrigerator was purchased less than a year ago)-->
How much will it cost repair? Prices depend on the type of fault and region:
| Type of repair | Cost (₽) | Terms |
|---|---|---|
| Diagnostics | 1,000–2,000 (free for warranty) | 30–60 minutes |
| Thermostat replacement | 2 000–4 000 | 1–2 hours |
| Compressor repair | 6 000–15 000 | 2–4 hours |
| Eliminating freon leak | 4 000–10 000 | 2–3 hours |
| Replacing the control board | 5 000–15 000 | 1–2 hours |
Where to call?
- 📞 Official service center (if the refrigerator is on guarantees).
- 📞 Private workshops (check reviews on Yandex.Maps or 2GIS).
- 📞 Manufacturer's hotline (numbers are indicated in the product passport).
⚠️ Attention: If the refrigerator was purchased on credit or through a trade-in program, check the conditions for warranty repairs. Some banks and stores (for example, M.Video, Eldorado) require mandatory contact with their service centers.
FAQ: Frequently asked questions about the continuous operation of the refrigerator
Can the refrigerator work without stopping due to overload of products?
Yes, if you have loaded a large amount into it warm or hot foods (for example, after shopping or cooking), the compressor will work longer than usual. Normally, this can last up to 6-8 hours. If after this time the refrigerator does not turn off, look for another reason.
Why does the new refrigerator hum and does not turn off at night?
Most likely, the problem is increased room temperature (heating works more intensely at night) or poor ventilation (cabinet doors are closed, there is no air circulation). Also check if the mode is turned on Super Freeze or Holiday.
What to do if the refrigerator does not turn off, but freezes normally?
This is a sign malfunction refrigeration chamber thermostat or temperature sensor. The freezer and refrigerator have separate controls, so one compartment may work properly and the other may not. The sensor needs to be replaced.
Is it possible to fill freon into the refrigerator yourself?
No. For refueling you need special tool (vacuum pump, manometric manifold), experience and certified freon (for example, R-134a or R-600a). Incorrect filling can lead to an explosion or gas poisoning.
How long should the compressor rest?
Normally, the compressor works 10–20 minutes and rests 5–15 minutes (the ratio depends on the model and room temperature). If the cycle is broken (for example, work 1 hour / rest 2 minutes), this is a sign of a malfunction.