The situation when a refrigerator Samsung stops freezing efficiently often takes you by surprise. Food in the chamber deteriorates, ice forms on the walls, and the inside becomes noticeably warmer than it should be. This is not just discomfort, but the risk of losing food supplies and causing an unpleasant odor. The owner immediately begins to look for an answer to the question of why the equipment is behaving incorrectly, and tries to understand whether it is possible to correct the situation on their own or is it time to call a technician.
Most often, the problem lies not in the breakdown of the compressor itself, but in the malfunction of auxiliary systems, such as defrosting or air circulation. Modern refrigerators - these are complex electronic devices where the failure of one sensor can lead to stopping the entire cooling process. It is important not to panic and consistently check the main components in order to exclude simple causes such as incorrect installation or a clogged filter.
In this article we will analyze in detail all the possible reasons for the decrease in the performance of the refrigeration chamber. You will learn how to carry out initial diagnostics, what to look for first and which components require specialist intervention. The complete absence of cold when the compressor is running often indicates a refrigerant leak, which requires professional repair. Let's figure out where exactly the failure could have occurred in your unit.
Violation of operating rules and placement of equipment
Before looking for complex technical faults, it is worth eliminating trivial errors in use. Samsung Refrigerator, like any other equipment, requires compliance with certain conditions for stable operation. If the unit is located too close to a wall or heat source, the heat transfer efficiency drops sharply. The condenser does not have time to cool down, and the compressor is overloaded, but does not provide the required cold.
The problem of improper loading of the chambers is also common. If food is packed too tightly and blocks the vents, cold air simply cannot circulate. In models with a system No Frost this is a critical moment. Air should flow freely from the evaporator to the shelves and then return back. Blocking the channels causes the sensors to read the normal temperature, but the food does not cool.
⚠️ Attention: Never install the refrigerator close to the wall. The minimum distance to the rear wall should be at least 10-15 cm to ensure normal ventilation of the condenser.
Another important factor is the tightness of the door seals. If the rubber Door Gasket is worn out, dirty, or simply does not fit due to the door being skewed, warm air constantly flows inside. The compressor tries to compensate for the heat loss by working non-stop, but the temperature still rises. Check the seal around the entire perimeter, wipe it and make sure that the door closes tightly.
No Frost defrost system malfunctions
One of the most common reasons why Samsung refrigerator it freezes poorly is the failure of the automatic defrost system. In models with No Frost the frost formed on the evaporator must be removed regularly. If this process is disrupted, the evaporator becomes coated with ice, which blocks the air flow. Visually, the chamber may look empty and dry, but behind the plastic panel there is an ice monolith.
Three main elements are responsible for the defrosting process: a heating element (heater), a defrost sensor and a timer (or electronic control module). If the heating element burns out, the ice simply does not melt. If the sensor is lying, it may not give a command to turn on the heating or, conversely, turn it off too early. As a result, some time after the last defrosting, the unit’s performance drops to almost zero.
- ❄️ Defrost heating element —a heating element that should melt the ice on the evaporator during the defrosting cycle.
- 🌡️ Defrost sensor —a thermostat that controls the temperature of the evaporator and turns off the heating element when the required temperature is reached values.
- ⏱️ Timer or board - a device that initiates the refrigerator to switch to defrost mode at specified intervals.
Diagnostics of this system requires partial disassembly of the freezer. The back panel must be removed to access the evaporator. If you see a thick layer of ice there, and the fan hums, but does not spin (or spins, but no air flows), then the defrost system is not working. The elements are checked with a multimeter for open circuits.
Symptoms of a heating element malfunction
If the heating element is burnt out, the refrigerator will operate as usual, cooling food, until the first automatic defrosting. After that, it will stop freezing, and the cycle will repeat every 8-12 hours (working time until the next defrosting attempt).
Problems with the compressor and start relay
The compressor is the heart of the refrigerator, and if it does not work correctly, then there will be no cold. However, often the problem lies not in the motor itself, but in its “piping.” Start relay responsible for starting the engine. If it fails, the compressor may hum as it tries to start, but then click and shut off after a few seconds. In this case, freon does not circulate through the system, and the temperature in the chambers remains at room temperature.
It is also worth paying attention to the operation of the compressor itself. If it runs constantly without turning off, but there is little cold, this may indicate a loss of performance of the piston group or valves. The motor is humming, the pipes are hot, but the pressure in the system is not enough to effectively boil the refrigerant in the evaporator. This is a serious malfunction that requires replacement of the unit.
In some cases, the compressor may be fully operational, but not start due to problems with the electronics. The control board may not send a signal to start if it receives incorrect data from the sensors. Therefore, before replacing the “motor,” you always need to make sure that the control circuits are in good condition.
☑️ Compressor diagnostics
Refrigerant leak and capillary system clogged
If the compressor runs quietly and evenly, but does not heat the condenser (grid behind), and heat most likely occurred in the chambers freon leak. A refrigerant is a working fluid that transfers heat. Without it, the cooling cycle is impossible. Leaks often occur in places where tubes are soldered, in the foamed part of the housing (evaporator) or through metal corrosion. It is impossible to visually notice freon, since it evaporates instantly.
Another problem with similar symptoms is Clogged capillary tube. There is a very thin section in the freon circulation system - a capillary. If moisture or oil breakdown products get into the system, an ice plug or dirt blockage may form there. Freon cannot pass through the bottleneck, circulation stops, and the cold disappears.
| Symptom | Freon leak | Clogged system |
|---|---|---|
| Compressor operation | Works constantly or with short cycles | Works constantly, gets very hot |
| Condenser temperature | Cold or lukewarm | Hot before the blockage, cold after |
| Nature of the breakdown | Gradual decrease in cold | Abrupt cessation of cooling |
| Repair | Searching for leaks, soldering, refilling | Blowing with nitrogen, replacing the filter-drier |
⚠️ Attention: Self-filling the refrigerator with freon without evacuating the system and replacing the filter-drier will lead to repeated breakdown of the compressor after a short time.
To accurately diagnose these faults, a pressure gauge station is required. The technician connects to the service fitting (if there is one) or cuts into the system to check the pressure. If the pressure in the system is equal to atmospheric pressure, there is a leak. If the pressure is normal, but there is no circulation, a blockage is likely.
Malfunctions of the fan and sensors
In refrigerators Samsung No Frost the fan is responsible for air circulation. If its blades are iced up or the motor is burned out, cold air will not flow from the freezer to the refrigerator compartment. You may hear the compressor humming, but it will be quiet inside. Sometimes the fan may jam due to ice, and then you will hear a characteristic crackling or noise.
Do not forget about the temperature sensors. In modern models there are several of them: in the freezer, in the refrigerator, on the evaporator. If temperature sensor gives incorrect readings (for example, it “thinks” that the chamber is already -10°C, although it is +5°C), it will command the compressor to turn off. As a result, the products will begin to deteriorate.
- 🔊 Fan noise - often indicates icing of the bushing or wear of the bearings.
- 📉 Error on the display - many models Samsung display error codes (for example,
22Cor23C) if the sensors are faulty. - 🔄 Cyclicity - if the cold appears and then disappears, perhaps the sensor is “lying” intermittently (periodically).
The sensors are checked by testing them with a multimeter. The resistance of a working thermistor should change depending on the temperature. If the device shows an open or short circuit, the part must be replaced. Fortunately, they are inexpensive and easy to change.
Diagnostics and typical mistakes during repair
When trying to repair it themselves, users often make mistakes that aggravate the situation. The most important thing is ignoring safety rules and lack of tools. Without multimeter, it is difficult to accurately determine whether the sensor or heating element is alive. Guessing in this case means spending money on spare parts that may not be needed.
A common mistake is defrosting with a hairdryer. Heating plastic parts and an aluminum evaporator with hot air is dangerous. The plastic will warp, and the thin evaporator tubes can easily be burned or damaged, causing a leak. You need to defrost only with heat at room temperature, leaving the doors open for 24 hours.
It is also not recommended to blindly change the compressor without checking the entire system. If there is acid or moisture left in the system from a burnt-out motor, the new compressor will burn out in a few months. The repair must be comprehensive: replacing the burnt-out unit, purging the system, replacing the filter-drier and only then refueling.
⚠️ Attention: If you do not have experience working with live electrical appliances, do not diagnose the internal components of a switched-on refrigerator. The risk of electric shock is very high.
It is also important to correctly interpret the symptoms. If the refrigerator hums but doesn't freeze, that's one thing. If he is silent and doesn’t freeze, that’s different. If it freezes, but turns off - third. An accurate description of the behavior of the equipment will help the technician quickly find the fault over the phone or during the first visit.
Frequently asked questions (FAQ)
Why does the Samsung refrigerator hum, but does not freeze?
This may indicate the compressor is operating without freon circulation (leakage, blockage) or that the compressor is trying to start, but cannot (the start relay is faulty). It is also possible for the fan to fail in No Frost systems.
How long should defrosting a Samsung take?
Complete natural defrosting of a refrigerator with a No Frost system should last at least 24 hours. Only during this time will the ice in the hidden cavities of the evaporator and the drainage system have time to completely melt.
Is it possible to operate a refrigerator if it does not freeze well?
For a short time - yes, if you monitor the temperature of the food. However, prolonged operation in this mode can lead to overheating and combustion of the compressor, since it operates without stopping. It is better to eliminate the cause.
What does a flashing temperature indicator on a Samsung mean?
A flashing indicator (often with a sound signal) usually means that the temperature in the chamber is above the established norm. This can happen either after loading warm products or if the cooling system is faulty.
Do you need to call a technician if the refrigerator has defrosted and is not freezing again?
If after a 24-hour defrost the refrigerator started working, but a week later the situation repeated itself, then the defrosting system (heating element, sensor, timer) is faulty. In this case, calling a technician is required to replace parts.