The situation when the refrigerator has stopped freezingtakes any home cook by surprise. This is not just a household inconvenience, but a direct threat of food spoilage, which can go bad in a matter of hours. The first step is to assess the scale of the problem: whether the cold has completely disappeared or whether the temperature is simply not low enough to freeze. Often, equipment owners panic ahead of time, without checking the basic settings or the position of the temperature regulator.
Modern units, whether reliable Indesit, popular Bosch or budget Atlantare designed on a similar principle, but have their own diagnostic nuances. If you notice that The light is on in the chamber, but the food is warm, this narrows the range of possible malfunctions to problems with refrigerant circulation or engine operation. In this article, we will analyze a step-by-step algorithm of actions that will help determine whether an urgent call to a technician is needed or the problem can be fixed on your own.
Primary diagnostics and simple causes
Before disassembling the back wall or looking for a service center phone number, it is necessary to eliminate basic operating errors. Often the refrigerator does not freeze due to trivial things that are easy to fix. Check whether the door fits tightly to the body. If the rubber seal is worn out or dirty, cold air constantly escapes out, and the compressor simply does not have time to pump up the desired temperature.
Pay attention to the location of the equipment. If the unit is placed close to a wall or furniture, the natural ventilation of the condenser is disrupted. Liebherr and Samsung, for example, are very sensitive to overheating of the radiator grille. It is also worth checking whether the control buttons are stuck or whether the operating mode is set correctly. Sometimes users accidentally turn on the “Vacation” or “Super Freeze” mode, which after a certain time can malfunction the automation.
The most common mistake is trying to stuff too much warm food into the chamber. This creates a colossal load on the system, and if compressor weak or worn out, it can go into defense. Let the equipment cool down and run idle for a couple of hours to see the real picture.
- 🔍 Check the tightness of the door and the condition of the seal.
- ❄️ Make sure that there is a gap of at least 5-7 between the back wall and the furniture see
- ⚙️ Check the position of the thermostat and the absence of special modes enabled.
- 🍲 Avoid loading the chamber with hot or warm foods.
⚠️ Attention: If you notice that the motor runs non-stop, without turning off for a minute, this is a sure sign that the system cannot reach the set temperature. Do not leave the equipment in this mode for more than 2-3 hours - this can lead to permanent failure of the compressor.
Problems with the No Frost system and defrosting
If you have a model with the system No Frost, and the refrigerator has stopped freezing, but The motor works fine, the problem often lies in the defrost system. In such units, the evaporator is hidden behind a plastic panel, and the ice that forms on it must be regularly melted. If the defrost heating element, timer or sensor fails, the evaporator becomes overgrown with a “fur coat” that blocks the circulation of cold air.
Visually this can manifest itself in the form of snowdrifts of ice in the freezer or, conversely, a complete absence of frost where it should be. In refrigerators LG i Beko there is often a breakdown of the defrost sensor, which “does not see” that the evaporator is frozen and does not start heating. As a result, the fan circulates warm air, and the food is defrosted.
Diagnostics often require partial disassembly of the freezer. It is necessary to remove the back panel and inspect the evaporator. If it is completely clogged with ice, and the fan barely spins or stops, then the problem is in defrosting. Air circulation In the No Frost system, this is the basis of the work, and without it, the cold simply does not enter the main chamber.
- 🧊 Inspect the evaporator for the presence of ice crust (required disassembly).
- 🌀 Check the operation of the blower fan - it should blow noticeably.
- 💡 Use a multimeter to ring the defrost heating element and temperature sensors.
How to defrost a refrigerator correctly?
Complete defrosting should not take long less than 24 hours. Do not use a hair dryer or hot water to speed up the process - this may damage the plastic parts and tubes. Simply unplug the appliance, open the doors and remove the food. Leave it standing with the doors open for a day so that all the condensate in the hidden cavities has time to evaporate.
Faults of the compressor and start relay
The most expensive and serious reason why the refrigerator does not freeze is the failure of the compressor. This is the “heart” of the unit, which pumps refrigerant through the system. If the motor hums, clicks, but does not start, or turns on for a couple of seconds and immediately stalls, the problem may be in the start relay or the motor itself. In models Atlant and Indesit the starting relays often burn out due to power surges.
If the compressor runs constantly, but there is no cold, and at the same time it remains cold to the touch (while it should be hot), this may indicate an interturn short circuit of the windings. The motor hums, consumes current, but does not create the necessary pressure for freon circulation. Diagnostics in this case requires measuring the current strength and resistance of the windings using professional equipment.
Sometimes the problem is solved by replacing the start-up relay, which you can do yourself if you have electrical skills. However, if it burns out itself compressor, replacement will be expensive and will require evacuation of the system and refilling with freon, which cannot be done at home.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The motor hums, but does not start | Faulty starting relay | Low (part replacement) |
| Compressor is hot, no cold | Freon leak or blockage | High (a technician is needed) |
| The motor starts and immediately turns off | Overload protection or motor wedge | Medium/High |
| Continuous operation without shutdowns | Thermostat leakage or breakdown | Average |
Refrigerant leak and clogged capillary system
If the refrigerator has stopped freezingand the motor runs smoothly and without stopping, but the condenser (grid at the back) remains only partially cold or warm, most likely a freon leak has occurred. A refrigerant is a substance that transfers heat. Without it, the system turns into a closed loop where nothing happens. Leaks often occur in places where tubes are soldered or due to corrosion of the evaporator, especially in models with foamed evaporators in the case wall.
Another common problem is clogging of the capillary tube. Oil circulates in the system, which over time can thicken or mix with breakdown products, forming a plug. Freon cannot pass through the narrow section of the tube, pressure is not created, and there is no cold. A characteristic sign of a blockage is a hot compressor and a cold (or room temperature) condenser grid.
It is almost impossible to diagnose a leak or blockage visually. The technician uses leak detectors, sprays the system with pressurized nitrogen, or uses a vacuum pump. Finding the leak on your own, especially if it is in the foamed part of the housing (“crying” evaporator), is unrealistic. In such cases, it is often necessary to install an external evaporator (“weeper”) on the back wall inside the chamber.
- 📉 A cold radiator grille with the engine running is a sign of a leak.
- 🛑 A hot compressor and a cold condenser are a sign of blockage.
- 💧 Oily spots under the refrigerator may indicate a leak.
⚠️ Attention: Freon itself is odorless and colorless, but upon contact with an open flame it forms toxic compounds. It is strictly forbidden to check the system for leaks using an open flame.
Faults of the thermostat and electronics
In refrigerators with mechanical controls, thermostatis responsible for the temperature. If it fails, it may not “see” that the chamber is warm and may not give the command to turn on the compressor. As a result, the refrigerator is silent, the light is on, and the food is defrosting. You can check it by closing the contacts directly (for diagnostics), but it is better to immediately replace it with a new one, since it is a consumable item.
In modern models with electronic control (Samsung RB30, LG GA-B etc.), instead of a thermostat, there are temperature sensors and a control module. If the control board malfunctions or one of the sensors burns out, the system may block the start of the compressor or, conversely, not turn it off. The error is often displayed on the display in the form of a code that can be deciphered in the instructions.
Problems with electronics often arise after power surges in the network. If your lights flicker frequently or have interruptions, it is recommended to use a stabilizer. Repairing the control module requires soldering and deep knowledge of electronics, so at home they usually replace the entire board.
☑️ Diagnostics before calling a technician
When professional repairs are needed
Despite the desire to save money, there are situations when do-it-yourself repair is not only useless, but also dangerous. If the problem lies in a sealed circuit (leak, compressor replacement, capillary tube), you will need special tools: a vacuum pump, a pressure gauge station, a burner and a scale for accurate freon charging. Without this equipment, it is impossible to restore the operation of the unit.
Also, you should not try to replace the compressor yourself. In addition to the difficulty of soldering copper tubes, you need to know exactly the brand of oil and type of freon, as well as the number of grams for refilling. An error in the dosage or type of oil will lead to rapid failure of the new engine. In the case of electronic modules, incorrect diagnosis can lead to the purchase of an unnecessary expensive part.
Contact professionals if:
1. Requires soldering of tubes and working with gas.
2. The motor-compressor needs to be replaced.
3. A leak has occurred in the foamed part of the housing.
4. Complex electronic diagnostics show a board error.
How much does the repair cost?
The cost consists of the work of the technician, the cost of spare parts and travel. Replacing the thermostat will cost the least. Replacing a compressor or eliminating a leak are the most expensive procedures, often accounting for up to 70% of the price of a new refrigerator.
Prevention and extension of service life
To prevent the question “why the refrigerator does not freeze” from arising too often, it is important to follow the operating rules. Regularly, at least once a year, defrost the equipment (if it is not No Frost) and wash the drainage hole. Dirt and crumbs getting into the drain cause blockages, water accumulates at the bottom and can lead to corrosion or defrosting problems.
Keep the condenser grill at the back clean. Dust, animal hair and fluff create a “thermal insulating” layer, causing the refrigerator to overheat and wear out. Vacuuming the grill is a good habit that will extend the life of your compressor by several years. Also, do not place the refrigerator near the radiator or in direct sunlight.
And lastly: do not store food in open containers and make sure that the packaging does not stick to the back wall of the chamber. This disrupts heat transfer and can lead to local freezing of the wall, which is especially dangerous for models with a foamed evaporator.
What to do if the refrigerator has defrosted and the food has leaked?
First of all, assess the condition of the food. It is better to throw away meat, fish and dairy products that have completely defrosted and become warm - the risk of poisoning is too great. Vegetables and fruits can be used to prepare dishes that require heat treatment. The refrigerator itself must be thoroughly washed and disinfected to eliminate odors and bacteria before loading new products.
Can the refrigerator be turned on immediately after defrosting?
Yes, modern models can be turned on immediately. However, if you carried out repairs or rearranged the refrigerator, let it stand turned off for 2-3 hours (so that the oil in the compressor flows into the crankcase) and only then turn it on. It is better to load products 1-2 hours after switching on, when the temperature rises.
Why is the freezer working, but it is warm in the main chamber?
Most often this indicates a freon leak (the residual amount still freezes in the freezer) or a malfunction of the defrost/air circulation system in No Frost models. It is also possible that the damper that regulates the supply of cold air from the freezer to the main compartment is stuck.
How to understand that the thermostat has burned out?
If the refrigerator is silent and does not turn on, try closing the thermostat contacts (after disconnecting from the network!). If the motor starts working after being plugged in, it means the thermostat is faulty and requires replacement. Be careful when working with electricity.