The situation when the refrigerator Samsung turns on, the light is on, but it doesn’t get cold inside is familiar to many equipment owners. Externally, the unit may behave absolutely normally: the indicator light is on, the ventilation is noisy, but the food begins to deteriorate due to the lack of low temperatures. This does not always mean that the device is completely broken; sometimes the problem lies in incorrect operation or settings failure.
The first thing to do if you notice a lack of cold is to carry out an initial diagnosis. You should not immediately call a specialist, since often the reason lies in a banal violation of air circulation or freezing of the channels. It is important to understand whether compressorworks, or whether it turns on only for a few seconds and turns off. The further algorithm of your actions will depend on this.
In this article we will analyze in detail the main malfunctions due to which the refrigerator stops freezing. We will look at both simple ways to fix the problem, available to every user, and complex technical breakdowns that require the intervention of professionals. Understanding the operating principles of your model will help save time and money.
Violation of operating rules and overload
Often the reason for the lack of cold is not the breakdown of parts, but a violation of operating rules. If you have just installed your refrigerator or moved it to another location, it needs time to adapt. Manufacturers Samsung recommend not loading the camera with products in the first 4-8 hours after turning it on. During this time, the unit should enter operating mode and reach the required temperature.
Another common mistake is overloading the chamber or installing hot dishes. If you put a pot of soup inside, the temperature inside will jump sharply. Thermostat will record this change and force the compressor to work harder, but due to the inertia of the system, the cold may not spread evenly. In such cases, food in the upper sections may thaw until the lower ones freeze.
⚠️ Attention: Never put hot or warm foods in the refrigerator. This leads to the formation of ice on the evaporator and disruption of air circulation, which ultimately blocks cooling.
It is also worth checking the tightness of the door. If the rubber seal is dirty or damaged, warm air from the room will constantly get inside. The system will not be able to compensate for the heat gain, and the temperature will begin to rise. Check whether the handles of dishes or bags of food interfere with the door closing tightly.
Problems with the thermostat and temperature sensors
One of the key parts responsible for maintaining the climate is the thermostat (thermostat) or an electronic temperature sensor in more modern models with the system No Frost. If this element fails, it may send incorrect signals to the control board. The compressor simply does not receive a command to start, although the refrigerator itself is plugged in and lights up.
In mechanical models, the thermostat is a capillary tube filled with gas or liquid. When a substance expands or contracts, the contacts close or open. Over time, the tube may lose its seal and the freon will escape. As a result, the contacts will remain open and the motor will not start. In electronic models, they are responsible for this thermistorswhich can fail due to voltage surges.
Diagnostics of sensors requires a multimeter. It is necessary to ring the circuit and check the resistance at different temperatures. If the device shows an open or short circuit, the part must be replaced. In models Samsung with a display, a sensor error is often displayed as a code, for example, 22C or 24C, which indicates a specific faulty sensor.
How to check a thermostat without instruments?
You can try to gently warm the tube thermostat with hairdryer. If you hear a clicking sound when heating and the compressor starts, the problem is in the thermostat. However, this method does not provide a 100% guarantee and requires caution.
Faults of the compressor and start relay
The compressor is the heart of the refrigerator. If it hums but doesn't start, or starts for a couple of seconds and clicks when it turns off, the problem may be with the start relay or the motor itself. The starting relay is responsible for supplying voltage to the motor windings at the moment of start. If its contacts are burnt or the mechanism is jammed, the compressor will not be able to start working.
A more serious situation is an interturn short circuit in the compressor windings or a wedge. In this case, the engine tries to start, hums very loudly and gets very hot, but cannot work. The thermal protection relay cuts off the power to prevent fire. After some time, when the compressor cools down, the cycle repeats. Such a breakdown requires replacement of the entire compressor, since rewinding at home is impossible.
Checking the start relay is quite simple. It needs to be removed from the side of the compressor and shaken. If a ringing sound is heard inside (as if from broken ceramics), it means the part has burned out. Replacing the relay is an inexpensive and quick repair that often brings the refrigerator back to life.
Freon leak and capillary system blockage
The refrigerant (freon) circulates in a closed circuit, taking heat from the chambers. If a microcrack has formed in the system, the gas gradually evaporates. First, the performance drops, the refrigerator begins to freeze worse, and then stops completely. Leakage can occur due to corrosion of tubes, mechanical damage or manufacturing defects.
Clogged capillary tube is another reason why cooling stops. An ice plug may form in the system due to moisture or oil breakdown products may accumulate. Freon cannot circulate, the pressure in the system drops, and the compressor runs empty. This can be determined by a characteristic feature: the condenser (grid at the back) remains cold, although the compressor is running.
To eliminate these problems, special equipment is required: a vacuum pump, a pressure gauge station and a refueling scale. Finding a leak or breaking through a blockage on your own is difficult without experience. Often, technicians use the nitrogen pressing method, but in difficult cases, depressurization of the circuit and installation of a new filter-drier is required.
| Symptom | Probable cause | Characteristic symptom |
|---|---|---|
| The compressor does not start | Thermostat malfunction | No clicks, silence |
| Buzzes and turns off | Start relay or wedge | Loud click after 3-5 seconds |
| Works constantly, no cold | Freon leak | Warm condenser at the back |
| Freezes only near the wall | Clogged system | Uneven heating tubes |
Failure of the No Frost system
In refrigerators Samsung with the system No Frost cooling occurs due to the circulation of cold air from the evaporator located behind the rear wall. If the fan does not work or the air supply channels are clogged with ice, the cold simply does not enter the chamber. In this case, the evaporator itself may be frozen into ice, but the food compartment is warm.
The heating element (heating element), defrost sensor and timer (or electronic module) are responsible for defrosting the evaporator. If the heating element burns out, the ice does not melt and blocks the air channels. The fan, trying to force air through the ice plug, may hum or even stop due to blocking of the blades. Visually, this appears as ice on the back wall inside the chamber.
For diagnostics, you need to remove the back panel in the freezer and inspect the evaporator. If it is covered with a thick layer of frost, and the sensors and heating elements are working properly, the problem may be in the control unit, which does not send a signal to defrost. A temporary solution may be to completely defrost the refrigerator within 24 hours.
☑️ Diagnostics of the No Frost system
Faults of the electronic control board
Modern refrigerators Samsung are controlled by complex electronics. The control board analyzes the readings of all sensors and regulates the operation of the compressor, fans and heating elements. Voltage surges in the network, moisture or condensation can damage board elements. In this case, the signals simply do not reach the actuators.
Symptoms of module failure can be chaotic behavior of indicators, spontaneous switching on and off, or complete “silence” when the sensors are working. Sometimes an error E with a digital code lights up on the display. Trying to reset the error by disconnecting from the network for 15 minutes can help if the failure was software.
⚠️ Attention: Repairing the control board requires deep knowledge of electronics. Do not try to solder the contacts yourself without experience - this can lead to a short circuit and failure of other expensive components.
If diagnostics show that all peripheral devices (compressor, sensors, heating elements) are working, but the refrigerator does not work, most likely the problem is in the module. It is either reflashed (if possible) or replaced with a new one. It is important to use original spare parts or high-quality analogues, since firmware incompatibility can cause new errors.
When you need to call a technician
Despite the desire to save money, there are situations when self-repair is dangerous or impractical. If the problem is related to a sealed circuit (freon leak, compressor replacement), special equipment and a license to work with refrigerants are required. An attempt to open the system without vacuuming will result in moisture entering and rapid failure of the equipment.
Also, do not take risks if you are not confident in your abilities when working with electricity. High voltage and complex control circuits require a professional approach. The technician will be able to accurately diagnose the unit, replace it and provide a guarantee for the work performed.
In conclusion, if your refrigerator Samsung stops freezing, do not panic. Start with simple steps: check the settings, defrost the chamber, inspect the seal. If this does not help, diagnose the main components. Understanding the nature of the malfunction will help you correctly explain the problem to the technician or, perhaps, fix it yourself if it does not require complex intervention.
Why does the refrigerator hum, but does not freeze?
A hum means that the compressor is trying to work. If there is no cold, there is probably a freon leak, a blockage has formed in the capillary tube, or the trigger mechanism has failed. A failure in the No Frost defrosting system is also possible.
How long does it take to defrost the refrigerator when icing occurs?
It takes at least 24 hours to completely defrost and equalize the temperature in the system. During this time, the ice will have time to melt in the hard-to-reach channels of the evaporator, which often solves the problem of lack of air circulation.
Is it possible to operate a refrigerator with a faulty seal?
It is highly not recommended. A constant influx of warm air will force the compressor to work without interruption, which will lead to its overheating and rapid wear, as well as the formation of a huge amount of ice inside the chamber.
What does the temperature indicator blink on the Samsung display?
Flashing usually indicates an increase in the temperature in the chamber above normal. This can happen either immediately after switching on or during a malfunction of the cooling system. If the indicator blinks for a long time, diagnostics is needed.