The situation when you open the refrigerator door, and it’s warm, while in the freezer the food is frozen to stone, is familiar to many owners of household appliances. This is a classic symptom that indicates a violation of the circulation of the refrigerant or problems with the temperature control system. Refrigeration unit It does not cease to perform its function instantly, so we often notice the problem when the products have already begun to deteriorate.
In most cases, the reason does not lie in the breakdown of the compressor, because if it would have failed if built completely, the freezer would not work either. Most often we are talking about a blockage, freon leak or sensor malfunction. Modern double-circuit systems are more difficult to diagnose, but older models “no-frost” or with a drip system can show similar symptoms. Understanding the operating principle will help you save on diagnostics.
An independent attempt at repair without experience can lead to more serious consequences, including the need to replace the entire compressor. However, initial diagnosis and checking of simple causes can be carried out independently, without calling a specialist. In this article, we will look at the main scenarios why refrigerator compartment it stopped cooling, and what steps need to be taken first.
Problems with door seals and closing tightness
One of the most commonplace, but often ignored reasons is the door does not fit tightly. If rubber seal the door of the refrigerator compartment is dirty, damaged or simply deformed, warm air constantly flows inside. The compressor tries to compensate for the loss of cold by working in enhanced mode, but due to the design features of the system, the cooling in the upper compartment may not reach the required values while the freezer continues to freeze.
Often owners forget that even a small gap leads to freezing of the evaporator, which blocks air circulation. Check to see if something is preventing it from closing tightly: a plate, a bag of food, or a displaced shelf. Magnetic latches may become loose over time, especially if the door is often slammed shut with force.
Attention! ⚠️ If you notice cracks or tears on the seal, a simple wash will not help - you will need to replace the part, since the seal is physically broken.
- 🧹 Regularly wipe the seal with a soft cloth so that grease and dirt do not disturb the seal.
- 🚪 Check whether the refrigerator is level on the floor - skewed housing prevents the door from closing tightly.
- 📦 Do not fill the shelves to capacity so that food does not press on the door from the inside.
Failures of the No Frost system and freezing of the evaporator
In refrigerators with the system No Frost cooling occurs due to forced air circulation from the evaporator located behind the rear wall. If this air does not enter the refrigerator compartment, it becomes warm. The most common cause is the formation of an ice plug in the air supply channel or on the evaporator itself. This happens when the defrosting (defrosting) system stops working correctly.
A heating element (heating element), a defrosting thermostat and a timer or electronic module are responsible for the defrosting process. If any of these elements fail, ice builds up and blocks the channels. As a result, the fan hums, the compressor works, the freezer freezes (since the evaporator is there), but cold air simply cannot pass into the main volume of the chamber.
How to defrost a refrigerator correctly?
Unplug the appliance, open all the doors and leave it for at least 12-24 hours. Do not use a hair dryer or knife to chip ice - this may damage the evaporator tubes or the plastic case.
You can diagnose this problem by listening to the operation of the device. If you hear it working, but there is no characteristic fan noise or defrost clicks, the problem is most likely in the defrost system. Also a sign may be a constantly burning alarm light. compressor, but there is no characteristic fan noise or defrost clicks, the problem is most likely in the defrost system. A constantly burning hazard warning light may also be a sign.
⚠️ Attention: If after complete defrosting (more than 24 hours) the refrigerator started working normally, but a week later the problem recurred, this is a guaranteed sign of a malfunction of the defrost system (heating element, sensor or timer).
Leakage of refrigerant (freon) as the main reason
The situation when the freezer is working but the refrigerator is warm often indicates a partial leak. refrigerant. Unlike a complete leak, when nothing works, with a partial leak, there is enough freon to freeze food near the evaporator (in the freezer), but its pressure and quantity are no longer sufficient to complete the full cycle and cool a large volume of the refrigerator compartment.
Leaks can occur in places where pipes are soldered, due to corrosion of the evaporator (especially in models with a foamed evaporator) or mechanical damage. The refrigerant R600a or R134aused in modern models is odorless, so it is impossible to detect a leak by smell. An indirect sign is that the compressor works almost non-stop, trying to gain temperature, and the condenser (grid at the back) may be only partially warm or cold.
| Symptom | Probable cause | Action |
|---|---|---|
| Freezer freezes, in the refrigerator +10°C and above | Partial leak of freon | Call a technician to find the leak and refill |
| The evaporator is covered with an uneven layer of frost | Impaired circulation refrigerant | Diagnostics of the capillary system |
| The compressor is hot, works without shutting down | An attempt to compensate for the lack of cold | Turn off the device to avoid burning out the motor |
Restoring functionality in the event of a leak requires professional intervention. It is necessary to find the place of damage, solder it, evacuate the system and refill freon in a strictly defined quantity. It is impossible to do this on your own without equipment.
Clogged capillary system and filter-drier
Another technical reason why refrigerator compartment does not cool is a clogged capillary tube. This is a narrow copper tube through which the refrigerant passes from a high pressure zone to a low pressure zone. If there is moisture or oil oxidation products in the system, they can clog the passage.
When clogged, the compressor begins to work with overload, trying to push freon, but circulation is disrupted. Often in such cases, you can hear uncharacteristic bubbling or gurgling inside the refrigerator, which is replaced by silence. Filter drierwhich should retain moisture, can also be clogged, which blocks the flow of refrigerant.
To fix this problem, the technician will have to cut the system, clean the capillaries with nitrogen, replace the filter drier and refill. This is a labor-intensive process, comparable in complexity to repairing a leak.
- 🔇 Listen: intermittent gurgling often indicates problems with the freon flow.
- 🌡️ Check the temperature of the condenser: if it is cold or warm only at the compressor, there is no circulation.
- 🛠️ Do not try to break through the blockage yourself - this requires high pressure and special equipment.
⚠️ Attention: If you hear that the compressor turns on, runs for a couple of minutes and turns off with a click, and then tries to turn on again - this may be a sign of a blockage or a faulty start relay, not just leaks.
Failures in the operation of the thermostat and electronic sensors
In electronically controlled refrigerators, they are responsible for the temperature sensors (thermistors), and in older models - mechanical thermostats. If the temperature sensor in the refrigerator compartment “lies” and sends a signal to the control module that it is already cold there, the compressor will not turn on to cool this area, although the freezer may be cooled according to the residual principle or due to another sensor.
In two-compressor models (where the freezer and refrigerator have their own motors) the situation simpler: if one compressor does not work, then the problem is in its circuit, sensor or relay. In single-compressor models with a system No Frost a faulty defrost sensor can block the operation of the refrigeration chamber fan.
Diagnostics of the sensors is carried out using a multimeter by measuring their resistance at different temperatures. The electronic control module can also “glitch”, not sending the correct commands to the actuators.
Sometimes the problem is solved by simply rebooting the electronics. Disconnecting the device from the network for 15-20 minutes can reset the error in the control module if it was caused by a power surge.
Diagnostics and procedure for detecting a problem
If you find that the refrigerator is warm, do not rush to call the service. Carry out initial diagnostics, which will help the technician quickly identify the breakdown or allow you to fix the problem yourself. First of all, assess how long ago this happened and whether the refrigerator is overloaded with food.
Check the settings. Perhaps one of the household members accidentally switched the operating mode to “Vacation” or changed the temperature regime. In some models, when the mode is on super freezing compressor resources are thrown only onto the freezer compartment.
☑️ Primary diagnostics
If external causes are excluded, it is necessary to evaluate the nature of the compressor operation. Does it work continuously? Does it turn on and off immediately? Is the fan humming? These observations are critically important for the master.
What to do if there is water in the refrigerator?
The presence of water at the bottom of the refrigerator compartment often accompanies a cooling problem. If the drain hole is clogged with ice (due to a faulty defrost system), the condensate does not drain and freezes or leaks out. Cleaning the drainage with warm water can temporarily solve the problem, but if the ice builds up again, the defrost heating element needs to be repaired.
Is it possible to operate a refrigerator with one working chamber?
Short-term operation is possible, but undesirable. The compressor operates under increased load, which reduces its service life. In addition, food in the refrigerator compartment will quickly spoil. It is better to move them to a cool place or use refrigerants before the technician arrives.
Why did the refrigerator work after defrosting, but after 3 days it stopped again?
This is a classic sign of a malfunction of the defrost system (heating element, sensor, timer). The ice melted during defrosting, the channels became free, and the cold began to set in. But since the faulty element does not melt the ice normally, after a few days the freezing recurs and blocks the system again.
How much does repair cost if the cold in one chamber has disappeared?
The cost depends on the breakdown. Replacing a sensor or heating element will cost less than finding a leak and refilling with freon. The exact price can only be given after diagnosis by a technician on site, since the price consists of the cost of spare parts and the complexity of the work.
How to extend the life of a compressor with such symptoms?
The main rule is not to keep the refrigerator on all the time if it is not cooling. The compressor will work non-stop, trying to reach temperature, overheat and burn out. It is better to turn off the device, defrost it and turn it on only for short-term maintenance of cold until a specialist arrives.