The situation when the refrigerator has stopped cooling in the main compartment, but the freezer continues to work properly, is one of the most common and alarming for owners of household appliances. You open the door, hoping to get a cold drink, but all you feel is warm air, while the food in the freezer is still frozen. Such a stratification of temperature conditions often indicates specific malfunctions that require immediate intervention to avoid food spoilage.
There is no need to panic in this case, but you cannot postpone diagnostics. Unlike a complete failure, when heat is everywhere, here the system is partially functional, which narrows the range of possible problems. Most often, the matter lies in a violation of the circulation of the refrigerant or malfunctions in the heat removal system. Modern double-circuit systems Models with No Frost have their own nuances, so it is important to correctly identify the symptoms.
In this article we will analyze the main reasons why The refrigerator compartment does not freeze, and we will provide a step-by-step algorithm of actions. You will learn how to distinguish a simple blockage from a serious freon leak, and understand in which cases DIY repairs are possible and when calling a technician is inevitable. Correct diagnostics at the initial stage will help save time and money.
Primary diagnostics: checking simple causes
Before disassembling the unit or calling a specialist, it is necessary to eliminate basic operating errors. It often happens that the equipment is working properly, but the heat exchange conditions are violated. First, check that the main compartment door is securely seated. If sealing rubber is worn out or dirty, warm air constantly enters the chamber, and the compressor simply does not have time to cool it, even working for wear.
The second important point is the location of the products. If you pack the shelves too tightly or place a pan directly next to the duct outlet, cold air will physically not be able to circulate through the volume. In systems No Frost this is critical, since there cooling occurs due to forced circulation. Make sure there are gaps between products.
⚠️ Attention: If you notice that the door does not close tightly due to misalignment or a foreign object, do not ignore it. Prolonged operation of the compressor in this mode can lead to its overheating and failure, which will require expensive replacement.
It is also worth checking the temperature conditions. Perhaps one of the household members accidentally changed the settings by setting the minimum cooling power. The display or regulator inside the camera should display a value in the range of +3...+5 degrees Celsius. If the settings are messed up, the system will not work correctly.
Problems with refrigerant: freon leak
One of the most common technical reasons why The refrigerator does not freeze well in the main chamber is a partial leak of refrigerant (freon). In such cases, the amount of gas in the system remains sufficient to maintain a low temperature in a small volume of the freezer, but it is no longer enough for a large volume of the refrigerator compartment. This is a classic symptom of a “dying” circuit.
It is difficult to visually diagnose a leak, since freon is colorless and odorless. However, you can pay attention to the operation of the compressor: it can hum almost non-stop, trying to reach the set temperature. If at the same time condenser (tubes on the back or sides) heat up unevenly or remain cold, the likelihood of a leak is high.
It is impossible to eliminate the leak yourself. Special equipment is required to locate the damage, solder the pipes and evacuate the system. Attempts to simply “add gas” without eliminating the cause will only give a temporary effect, after which the problem will return in a few weeks or months.
Faults in the defrosting system (for No Frost)
If you have a model with a system No Frost and the refrigerator compartment has stopped cooling while the freezer is running, the culprit is often becomes an automatic defrosting system. In such units, cold air is pumped by a fan from the evaporator, which is located in the freezer compartment. If the evaporator is overgrown with a “coat” of ice, the air channels are blocked, and the cold simply does not reach the main compartment.
Several key elements are responsible for the defrosting process: Evaporator heating element, a thermal relay (defrost sensor) and a timer or electronic control module. If the heating element burns out or the sensor is stuck, the ice does not melt, accumulates and blocks the fan. As a result, you hear that the fan is humming or, conversely, is silent, and there is no cold flow coming from the air duct.
Checking often requires completely defrosting the refrigerator within 24 hours with the doors open. If after this the unit begins to freeze normally, but after a week or two the problem recurs, it means that one of the elements of the defrost system is faulty and requires replacement.
| Symptom | Probable cause | Nature of compressor operation |
|---|---|---|
| Ice in the channel air duct | Faulty heating element or sensor | Works cyclically, but weakly |
| The fan does not make noise | Frozen impeller | Can work constantly |
| Water under the drawers | Clogged drainage hole | Normal mode |
Clogged capillary tube
Another technical reason why The refrigerator does not maintain the temperature. in the upper compartment is capillary tube clogged. Inside the thin copper tube through which freon circulates, plugs from oil or moisture oxidation products can form. This prevents the normal flow of refrigerant.
When there is a blockage, a strange picture is often observed: the compressor operates loudly, sometimes overheating, the condenser is hot only at the beginning, and then the tubes are cold. The refrigerator compartment is warm, but the freezer may be normal or not cold enough, but to a lesser extent. A characteristic sign is the absence of the characteristic noise of flowing gas (gurgling) when the compressor stops.
Removing the blockage is a complex procedure that requires purging the system with nitrogen under high pressure or replacing the capillary tube. It is impossible to carry out high-quality repairs at home without a vacuum pump and a pressure gauge station.
⚠️ Attention: Do not try to break through the blockage by piercing the pipes or using chemical solvents. This will lead to depressurization of the system, moisture ingress and the complete need to replace the expensive compressor.
Malfunctions of the thermostat and sensors
Electronics can also malfunction. If thermostat (the thermostat) fails, it may send an incorrect signal to the compressor that the chamber is already cold enough. As a result, the motor turns off too early, without having time to cool the volume of the main compartment, although in a small freezer the temperature is still maintained due to inertia.
In modern models with electronic control, air sensors are responsible for the temperature. If the main chamber sensor is “lying” or has poor contact, the control module will not start the compressor or air supply damper. Often in such cases, error codes may light up on the display, but not always.
You can check the mechanical thermostat by closing its contacts (for diagnostics), but this must be done carefully, remembering the voltage in the network. Electronic sensors are checked for resistance with a multimeter. If you do not have the skills to work with electrical appliances, it is better to entrust this task to a professional.
How to check a thermostat without instruments?
You can try to gently heat the capillary tube of the thermostat in your hands. If the compressor does not start (assuming the start relay is working properly), there is a high probability of a sensor failure.
When you need to call a specialist
There is a clear boundary between what you can do yourself and when the intervention of a specialist is required. If you have completed a complete defrost, checked the tightness of the door and made sure that the settings are correct, but The refrigerator does not coolmost likely the problem is technical. Freon leaks, blockages and replacement of electronics require licensed equipment.
In addition, if you hear unusual sounds (metallic knocking, strong humming), smell a burning smell or see oil under the unit, you should stop operating immediately. Continued activation may be dangerous. The technician will carry out diagnostics using a leak detector and pressure gauges, accurately identifying the breakdown unit.
Do not delay repairs. If the problem is a freon leak, then running the compressor “idle” can lead to burnout of the motor winding. The cost of replacing the compressor significantly exceeds the cost of repairing the leak and refilling.
☑️ Checklist before calling a technician
Prevention and proper operation
What is the situation when refrigerator compartment stops freezing, it happened less often, it is important to follow the operating rules. Do not place hot products in the chamber - this upsets the thermal balance and leads to increased ice formation, which is especially critical for No Frost systems. Also monitor the condition of the seals: they need to be regularly wiped and checked for elasticity.
Periodic defrosting (even for No Frost systems, at least once a year for hygiene and inspection) prolongs the life of the equipment. Clean the drainage hole inside the chamber from crumbs and dirt so that condensation drains freely without creating ice plugs in the channels.
⚠️ Attention: Specifications and maintenance requirements may vary depending on the specific model and year of manufacture. Always check the official instructions of the manufacturer of your device before carrying out any manipulations.
Frequently asked questions (FAQ)
Is it possible to continue to use the refrigerator if it does not freeze in the main chamber?
Short-term use is possible for storing products that do not require extreme cold, but it is impossible to leave the equipment in this condition for a long time. The compressor will work hard, trying to compensate for the lack of cold, which will lead to its breakdown. In addition, bacteria will begin to multiply in the warm compartment.
How long does it take to defrost the refrigerator to check?
For complete and high-quality defrosting, especially if there is a suspicion of an ice plug in the No Frost system, the unit should stand turned off with the doors open for at least 24 hours. A shorter procedure may not melt the ice in hidden channels.
Why is there ice in the freezer, but warm in the refrigerator?
This indicates that the cooling cycle has started, but there is not enough refrigerant for the entire volume (leakage), or air circulation is disrupted (fan malfunction or clogged ducts). The freezer, as a smaller volume, is cooled first.
Is it possible to replace freon in the refrigerator yourself?
No, this is impossible without special equipment. You need a vacuum pump to remove air and moisture from the system, pressure gauges to control pressure and scales to accurately dose the gas. An attempt to refuel "by eye" will lead to compressor failure.