The situation when The refrigerator does not freeze wellcan take any home cook by surprise. Food begins to quickly deteriorate, condensation appears on the walls, and the usual hum of a running compressor can be replaced by alarming silence or, conversely, a continuous hum. This is not just an inconvenience, it is a risk of losing your food supply and the need to urgently purchase expensive equipment.
Before calling a technician, it is worth carrying out an initial diagnosis. Often reasons hidden in banal things: incorrect installation, lost settings or banal defrosting. However, ignoring the symptoms can lead to failure compressor or a refrigerant leak, which will require serious repairs. In this article we will analyze in detail all the possible factors influencing the quality of cooling.
You need to understand that modern units, whether Indesit, Bosch or LG, have their own operating characteristics. If you notice that the chamber is not cold enough, first rule out external factors. Only after this should you proceed to checking the technical components. The critical indicator is the temperature in the main chamber below +5°C and in the freezer below -18°C; any deviations require attention.
Checking the settings and operating mode
The most common reason why equipment stops freezing properly is accidentally changed settings. In a hurry or while cleaning, you may touch the control panel. Modern models are equipped with an electronic control unit where it is easy to change the temperature regime. Check to see if the "Eco" or "Holiday" mode is set, which specifically reduces the intensity of work.
If you have a manual control, the control may have shifted to the minimum cold position. For models with the system No Frost it is important to make sure that the fast freezing function is not activated for a long time, as this may upset the temperature balance in the main chamber. It is also worth checking if the “Super Cooling” option is turned on unnecessarily.
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⚠️ Attention: When setting the temperature mode, avoid extreme values. Setting the lowest possible temperature will not speed up the freezing of food, but will cause the compressor to work harder, which will lead to overheating and breakdown.
It is important to take into account seasonal changes. In summer, when the ambient temperature in the room is high, it is more difficult for the refrigerator to maintain cold. During such periods, slight adjustment of settings is allowed, but you should not demand the impossible from the equipment if the kitchen is +30°C. Thermostat should work in the optimal range.
Rules for loading and distribution of products
Even a serviceable unit will freeze poorly if the rules for its operation are violated. Overloading cameras is a common mistake. When there is too much food, it blocks the vents. In systems No Frost air circulation is the basis of operation, and blocking of channels leads to the formation of “heat pockets.”
It is also dangerous to place hot or warm foods inside. This creates a sharp jump in temperature and humidity, which forces compressor to work in emergency mode. Moreover, warm steam condenses on the evaporator, forming an ice crust that reduces the efficiency of heat transfer.
- 🍲 Do not place pots of hot soup immediately after the stove, let them cool to room temperature.
- 🌬️ Leave gaps between the products and the back wall for free circulation of air flow.
- 🚫 Do not overcrowd the chamber, especially in the first hours after loading new products.
Pay special attention to the tightness of the packaging. Open containers with liquid increase humidity, which leads to freezing of the evaporator. If you notice that there is a lot of frost on the walls, check that the lids of the containers are tightly closed. Correct load distribution prolongs the life of fan and the heat removal system.
Problems with the seal and tightness
If the refrigerator is working normally, but it is warm inside, the seal of the chamber may be broken. The main element responsible for this is the rubber seal on the door. Over time, it dries out, cracks, or simply becomes dirty, no longer fitting tightly to the body.
You can check the integrity of the seal with a simple test with a sheet of paper. Clamp the sheet with the door and try to pull it out. If the paper comes out easily, it means the pressure is insufficient. In places of poor fit, warm air comes in, and cold air goes out. This causes the unit to work without stopping, but not to provide the required cold.
Often the problem is solved by simply washing the seal. Grease and sticky contaminants prevent the rubber from making good contact with the metal. Use a soft sponge and warm soapy water. If the rubber is deformed or cracked, it must be replaced. Also check the door hinges - if they are loose, the door warps and does not close tightly.
☑️ Diagnosis of the seal
Defrosting system and water drainage
For models with the system No Frost the serviceability of the defrosting system is critically important. If the defrost sensor, heating element or timer fails, a “fur coat” grows on the evaporator. Ice blocks the ventilation ducts, and cold air simply does not enter the main chamber, remaining in the freezer or behind the wall.
A sign of such a malfunction is often that the freezer freezes perfectly, but the refrigerator compartment is warm. You can also hear fan humming or crackling as it tries to break through the ice jam. In some cases, ice can even block the fan blades.
To solve the problem, a complete defrost of the unit is required. Unplug it, open the doors and leave it for at least 12-24 hours. Place rags as there may be a lot of water. If after defrosting the equipment worked normally, but after 2-3 weeks the situation repeated itself, it means that one of the elements of the defrosting system (heating element, sensor or timer) is faulty.
⚠️ Attention: Do not try to chip the ice from the evaporator with a knife or sharp objects! You can damage the freon pipes or pierce the radiator, which will lead to an instant refrigerant leak and costly repairs.
Faults of the compressor and start relay
The compressor is the “heart” of the refrigerator. If it works but does not pump freon, or turns on for a few seconds and then turns off, the problem may be with the start relay or the motor windings. Humming, clicking and subsequent fading are characteristic symptoms of a faulty starting device.
In two-compressor models, the situation is simpler: if one chamber does not freeze, it means that the corresponding compressor has failed. In single-compressor units with one motor that drives freon along both circuits, a breakdown leads to loss of cold in the entire device. Diagnostics the compressor requires a multimeter and knowledge of electrical engineering.
If the compressor is hot to the touch, but not starts, it may be jammed. In rare cases, gently tapping the motor housing (with the power off!) helps, but most often the unit needs to be replaced. It is also worth checking the voltage in the network - low voltage may prevent the motor from starting.
Symptoms of a faulty compressor
If the compressor hums, but does not start, or works constantly without turning off, without creating cold, these are signs of a serious malfunction. In the first case, the starting relay is often to blame, in the second - a freon leak or loss of performance of the motor itself.
Freon leak and capillary system blockage
Freon is a refrigerant that circulates through the system, taking away heat. If a microcrack has formed in the circuit (often due to corrosion or mechanical damage), the gas gradually evaporates. If there is a lack of freon, the refrigerator will work constantly, but freeze very little or stop completely.
Another common problem is a clogged capillary tube. A plug may form inside the system from oil or moisture oxidation products. This prevents the refrigerant from circulating. The symptoms are similar to a leak: the unit is humming, the condenser (grid at the back) may be barely warm or cold, but it is warm inside.
It is difficult to diagnose these problems on your own. A leak may be indicated by swelling on the inside wall of the refrigerator or oily spots underneath. Repair requires calling a technician who will pressure test the system, find the location of the leak or blockage, replace the filter drier and fill in a new freon freon.
| Symptom | Probable cause | Complexity repair |
|---|---|---|
| The compressor hums, but does not start | Faulty start relay | Low (replacement relay) |
| The freezer works, the refrigerator compartment does not | Clogger or leak in the circuit, malfunction of the damper | High (requires a master) |
| The unit works non-stop | Freon leak, compressor wear, bad seal | Medium/High |
| Ice in only one corner of the freezer | Lack of freon | High (refilling) |
The influence of the external environment and location
The location of the refrigerator plays an important role. If it is located close to the wall, the radiator cannot effectively transfer heat. The minimum distance from the back wall to the kitchen wall should be 5–10 cm. Also, you should not install equipment near the stove, radiator, or in direct sunlight.
The temperature in the room also matters. Most refrigerators are designed to operate in a climate class from +10°C to +32°C (or +43°C for tropical models). If the room is too cold (for example, in an unheated cottage in winter), the oil in the compressor thickens and it cannot start or operates ineffectively.
Dust and dirt on the condenser (the black grille at the back or bottom) act as a heat insulator, interfering with cooling. Regular dust removal with a vacuum cleaner or brush will help improve heat transfer and reduce the load on the compressor. This is a simple procedure that should be carried out every six months.
Frequently asked questions (FAQ)
Why does the refrigerator freeze but does not turn off?
Most often this indicates a freon leak, compressor wear or a seal failure. The unit tries to gain temperature, but due to loss of cold it cannot do this. Also, the cause may be a malfunction of the thermostat, which does not give a signal to turn off.
Is it possible to use a refrigerator if it is standing on the balcony in winter?
Most household models are not designed to operate at temperatures below +10°C (the lower limit of the climate class). In cold weather, the oil in the compressor freezes, which leads to its breakdown during startup. In addition, the plastic seal and electronics may be damaged.
How often do you need to defrost a No Frost refrigerator?
The system No Frost does not require manual defrosting to remove ice, as this happens automatically. However, once every 6–12 months it is recommended to carry out a complete defrosting and washing for hygiene and cleaning hard-to-reach places from dust and odors.
What to do if the inside smells like plastic or burnt?
Urgently unplug the device! This may indicate overheating of the wiring, melted insulation, or a compressor malfunction. Operating such a device poses a fire hazard. You need to call a technician to diagnose the electrical part.