The situation when you open the refrigerator door and there is room temperature inside or the food begins to spoil can unsettle any owner. Malfunction of the cooling system is always stressful, but There is no need to panic ahead of time, since in many cases the problem can be solved on your own without calling a technician. The first thing you need to understand is the scale of the disaster: the entire device has stopped cooling completely or problems have started only in one of the chambers.
Often the cause is a banal overload or a malfunction of the electronics, which is easily resolved by simply rebooting the device. However, if you notice that compressor it is humming, but there is no cold, or the motor is completely silent, a more in-depth diagnosis will be required. In this article, we will analyze in detail the action algorithms for various breakdown scenarios so that you can quickly return the equipment to life.
Primary diagnostics: checking the obvious causes
Before grabbing the tools, it is worth eliminating the simplest and most common factors that are often overlooked mind. Lack of cooling may be caused not by a breakdown, but by improper operation or external conditions. Carefully inspect the chamber: if the products are lying close to the back wall, they could block the air circulation, which is why the temperature sensors transmit incorrect readings.
It is also worth checking the tightness of the sealing rubber around the perimeter of the door. If the rubber band is dirty, deformed, or simply does not hold the magnetic valve, the cold will evaporate faster than it is produced by the unit. Try to test with a sheet of paper: hold it with the door and try to pull it out - if it comes out too easily, it means the seal is broken.
Another important nuance is the location of the equipment. If the refrigerator is standing close to the wall or in a niche without gaps for ventilation, condenser does not have time to cool down. This causes the protection system to shut down the compressor to prevent overheating. Make sure that the gap to the wall is at least 5-7 centimeters.
⚠️ Attention: If you have recently washed the floors around the refrigerator or there is very high humidity in the room, check whether water has got on the electrical contacts or in the control area. Moisture can cause short circuits or false protection triggers.
Rules for complete defrosting of the No Frost and drip system
One of the most common reasons why the refrigerator does not freezeis the formation of an ice coat on the evaporator. Even in systems No Frostthat are positioned as not requiring defrosting, the defrosting system may fail and ice will block the cold air supply channels. In such cases, complete defrosting is necessary.
To do this, unplug the appliance, remove all food and leave the doors open for at least 10-12 hours, or better yet, for a day. It is important not to use a hairdryer or other heating devices to speed up the process, since a sudden temperature change can damage the evaporator tubes or the plastic case.
☑️ Correct defrosting algorithm
After the ice has completely melted, thoroughly wipe the insides with a dry cloth and collect the water. Only after this can you connect the device to the network. If after a few hours of operation the cold appears, then the problem lies precisely in freezing.
Why does ice interfere with work?
The ice crust on the evaporator works as a heat insulator. The compressor works hard, trying to cool the chamber, but the cold cannot penetrate the layer of ice. As a result, the motor overheats and turns off, and the products melt.
Checking the temperature conditions and settings
Sometimes users themselves inadvertently become the culprits of the problem, accidentally changing the settings or setting the wrong operating mode. Modern models Bosch, LG or Indesit have complex electronic control panels where it is easy to get confused. Check if the “Vacation” or “Super Freeze” mode is activated, which may not work correctly during prolonged use.
The optimal temperature in the main chamber should be from +3 to +5 degrees Celsius, and in the freezer - about -18 degrees. If the regulator is set to minimum, the system may not have time to gain cold, especially if a lot of warm products have just been loaded into the chamber.
| Operating mode | Description of function | Influence on cooling |
|---|---|---|
| Eco / Eco | Energy saving | Reduces power, temperature may be higher than normal |
| Super freezing | Fast cooling | Works at the limit, requires manual shutdown |
| Vacation | Minimum energy consumption | The freezer is working, the refrigerator compartment is turned off |
| Intelligent | Auto-tuning | It regulates the power according to load |
Pay attention to the location of the thermostat. In mechanical models, this is a knob with numbers: the higher the number, the colder it is. You should not immediately set the maximum value, this will not speed up cooling, but will create an extra load on the compressor. Attention: If your refrigerator has a Holiday function, make sure that it is not activated accidentally. In this mode, the main chamber may not be cooled at all to save energy while you are not at home. compressor.
⚠️ Attention: If your refrigerator has a Holiday function, make sure it is not activated accidentally. In this mode, the main chamber may not be cooled at all to save energy while you are away from home.
Diagnostics of the compressor and start relay
If after defrosting and checking the settings the problem does not disappear, you should listen to the operation of the motor. Compressor This is the heart of the refrigerator, and its malfunction is critical. If you hear a humming noise that ends abruptly with a click and repeats cyclically, most likely the problem is in the starting relay or the motor itself.
The starting relay is responsible for starting the engine. Over time, the contacts in it can burn or oxidize, which is why the compressor cannot start and immediately stalls. Replacing this part is a relatively simple procedure that can be done at home if you have basic skills and a new part.
If the motor is completely silent, check the presence of voltage in the outlet and the integrity of the power cord. It is also worth checking the thermostat: if it is faulty, it may not give a command to turn on the compressor, “thinking” that the chamber is already cold enough.
To check the thermostat in mechanical models, you can close its contacts directly (observing safety precautions!). If the compressor starts working after the short circuit, it means the thermostat requires replacement. In electronic models Samsung or Whirlpool diagnosis is carried out through the test mode, which is described in the instructions.
Freon leak and problems with the capillary
One of the most unpleasant situations is a refrigerant leak (Freon). If you notice that the refrigerator is constantly humming without turning off, but there is no cold, or oily spots have appeared on the rear grille, these are sure signs of depressurization of the system.
Freon circulates in a closed circuit, and if a microcrack has formed somewhere, the gas evaporates and cooling stops. It is impossible to independently find a leak and fill the system without special equipment (vacuum pump, pressure gauges, scales).
An attempt to simply “add” freon without finding a leak and evacuating the system is doomed to failure: the gas will leave again after a short time, and the compressor may burn out due to air and moisture trapped inside.Clogged capillary tube is also common. Oil breakdown products or moisture can clog the thin channel, preventing the circulation of refrigerant. The symptoms are similar to a leak: the compressor works, but there is no cold, and the condenser (grid at the back) remains only partially cold or warm.
Malfunctions of the fan and defrost system
In refrigerators with the system No Frost the fan is responsible for air circulation. If it stops working or its blades are frozen and blocked by ice, cold air from the freezer will not flow into the main compartment. As a result, there may be ice in the freezer, and heat in the refrigerator compartment.
You need to check the fan for mechanical obstacles and test it with a multimeter. If the fan motor is burnt out, replacing it is not difficult. It is also worth checking the defrost sensor and the evaporator heating element: if they do not work, the ice will not melt, and sooner or later the fan will block again.
To diagnose the defrost heating element, you need to “ring” it for resistance. If the device shows a break (infinity), it means that the heating element has burned out and requires replacement. This is a common problem in models Atlant and Beko older than 5-7 years.
⚠️ Attention: When working with electrical components (heating element, fan, relay), always disconnect the refrigerator from the mains. Even after turning off, the capacitors may retain a residual charge.
Frequently asked questions (FAQ)
Why does the refrigerator click but does not start?
The clicking sound is usually made by the start relay, trying to start the compressor. If this is followed by silence or a second click after a while, it means that either the relay itself has burned out, or the compressor has jammed, or the thermal protection has tripped due to overheating. It is necessary to let the motor cool and check the relay.
Is it possible to operate the refrigerator if it does not freeze?
For a short time - yes, for example, during defrosting or diagnostics. Continued operation of a faulty unit (especially with a freon leak or a faulty compressor) will lead to complete failure of expensive components. It is better to turn off the device until the reasons are found out.
How long should a new refrigerator get cold after turning it on?
Usually the first temperature set takes from 2 to 12 hours depending on the volume of the chamber, model (Indesit, Liebherr etc.) and the temperature in the room. It is recommended to load the chamber with products only after reaching the nominal temperature.
What to do if it is warm in the refrigerator compartment, but normal in the freezer?
This is a classic sign of a malfunction of the defrosting system (frozen air supply channel) or a broken fan in the systems No Frost. It is also possible that the drain hole is clogged or freon leaks when its quantity is only enough for the freezing circuit.