The situation when upper chamber of a Samsung refrigerator stops freezing often takes you by surprise, because this is where products that require quick freezing are stored. Owners of modern models with the system No Frost face this less often than owners of older units, but they may also experience malfunctions. The first sign of a malfunction is the appearance of soft, melting products or the absence of the characteristic hum of a working compressor.
Before calling a technician, it is worth conducting an initial diagnosis yourself, since in many cases the problem is solved by simply defrosting or replacing an accessible element. Fault there may be a problem both in the banal sticking of the door and in the failure of complex control electronics. Understanding the operating principle of your model will help save time and money on servicing.
In this article we will analyze in detail the main reasons why Samsung does not gain temperature in the freezer compartment, and will provide a step-by-step algorithm for troubleshooting.
Fault tightness and problems with the door
One of the most common reasons why upper chamber loses cold is a violation of the thermal circuit. If the door does not fit tightly, warm air constantly enters, causing the compressor to wear out, but not achieve the set parameters. In systems No Frost this leads to increased formation of ice on the evaporator, which over time completely blocks air circulation.
Check the condition sealing rubber band along the perimeter of the door. It should be elastic, without cracks, tears or visible deformations. Dirt and grease that accumulate on the surface of the seal can also prevent a tight seal. Wipe the rubber band with a soft cloth and soapy water and check if the gap has disappeared.
⚠️ Attention! If the seal has lost elasticity and is covered with microcracks, it must be replaced. Attempts to restore the old seal by heating it with a hairdryer give only a temporary effect.
It is also worth paying attention to the door hinges. Over time, they can weaken or become askew, especially if the refrigerator is often opened with a full load or tilted during transportation. Door misalignment creates a diagonal gap through which the cold escapes. Adjusting the hinges usually requires a hex key and a couple of minutes of time.
Failure in the defrosting system (No Frost)
If your Samsung is equipped with a system No Frostthen the lack of cold in the upper chamber often indicates problems with automatic defrosting evaporator. During operation, ice accumulates on the heat exchanger, which must be periodically removed by the heating element. If this cycle is disrupted, the ice coat grows and blocks the channels for supplying cold air to the chamber.
The main culprits in this situation are:
- ❄️ Defrost heating element — a heating element that could burn out and stop melting the ice.
- 🌡️ The defrost sensor — a thermistor that does not signal the need to turn on the heating.
- 💧 Drain hole is clogged and the water from the melting ice does not leave, but freezes below, blocking the operation of the system.
To test this hypothesis, it is enough to carry out a complete defrost refrigerator. Leave the unit turned off with the doors open for at least 24 hours (preferably two days). If after switching on Samsung refrigerator it started to freeze again, but after 1-2 weeks the problem returned, then the defrosting system is really faulty and requires replacement of components.
Why is 24 hours not enough?
Short defrosting in 5-10 hours often does not have time to melt the ice in hidden air ducts and inside the foam insulation, which leads to false diagnostics.
Fan and air circulation malfunctions
In models with forced air circulation, the fanlocated behind the rear wall of the freezer is responsible for cooling. It is he who drives the cold flow through the channels. If the fan has stopped, the cold remains in the evaporator area and does not reach the products, although the compressor may work properly.
The reasons for the fan stopping may be different. Most often, frozen ice interferes with its blades. This brings us back to the defrost system problem. However, mechanical wear of the motor bearings or winding breakage is also possible. When you turn on the refrigerator, listen: if you hear the hum of the compressor, but there is no characteristic noise of the fan in the upper chamber, the problem is most likely there.
Diagnostics of the fan requires partial disassembly of the internal panel of the freezer. Visually inspect the impeller for ice chips and check that it rotates freely. Frozen fan may make a cracking or humming sound while trying to start.
Problems with the refrigerant and compressor
More serious reasons why the upper chamber does not freezeare associated with a violation of the refrigerant circulation circuit. If a freon leak has formed in the system, the compressor will work constantly, trying to gain temperature, but there will be no cold in any compartment, or it will be very weak.
In some cases it is possible clogged capillary tube. This results in the refrigerant not being able to circulate freely throughout the system. A sign of a blockage is often an unnaturally hot condenser (grid on the back or sides) and a lack of cooling.
The most difficult and expensive option is failure of the compressor itself. If the motor hums, clicks and immediately turns off or does not start at all, it will need to be replaced. It is impossible to solve problems with freon or compressor on your own without special equipment and skills.
⚠️ Attention! Damage to the tubes when trying to replace the compressor yourself will lead to a complete release of refrigerant. Repairs in this case will become much more expensive.
Malfunctions of the control module and sensors
Modern refrigerators Samsung are controlled by complex electronics. If control module receives incorrect data from sensors or does not operate correctly, it may not issue a cooling command. Often the freezer temperature sensor fails, which “tells” the board that there is already cold, although in fact it is warm there.
Error indicators may light up on the refrigerator display or symbols may flash. For example, combinations like E1, E3 or flashing temperature indicate a specific malfunction. The decoding of error codes can be found in the instructions for your model or in the service manual.
Sometimes the problem is solved by rebooting the “brains” of the refrigerator. To do this, you need to disconnect the device from the network for 15-20 minutes. If after turning on the system works normally, there was a temporary software glitch. If the error repeats, diagnostics of the sensors with a multimeter is required.
Diagnostic table of main faults
For convenience, we will systematize the main symptoms and probable causes in a table. This will help you quickly navigate the nature of the breakdown.
| Symptom | Probable cause | Difficulty of repair | Necessary actions |
|---|---|---|---|
| It’s warm in the chamber, on the walls no ice | Freon leak, compressor faulty | High | Call a technician, refill with freon |
| Ice visible on the back wall | System faulty defrost (heating element, sensor) | Average | Replacing the heating element or sensor, defrosting |
| The refrigerator hums, but does not freeze | Clogged capillary or fan failure | High/Medium | Purge the system or replace the fan |
| Temperature fluctuates, error is on | Failure of electronics or temperature sensor | Average | Reboot, replace sensor |
☑️ Actions before calling a technician
Frequently asked questions and answers (FAQ)
How long should the upper chamber cool down after defrosting?
After complete defrosting and turning on the refrigerator Samsung usually takes 4 to 8 hours to reach the set temperature in the freezer. If after 10-12 hours the cold does not appear, the problem is technical.
Is it possible to use the refrigerator if the upper chamber does not freeze?
It is not recommended to operate the device with a malfunction. The compressor will work without stopping, which will lead to its overheating and eventual failure. Products in the main chamber can also deteriorate due to a violation of the temperature regime.
Why does a “coat” of ice form in the upper chamber?
Abundant snow or a coat of ice indicates that moisture from the air penetrates inside (poor tightness) or the water drainage system does not work during defrosting (clogging or breakdown Heating element).
How to check the defrosting heating element at home?
To check, you need a multimeter in dial mode. You need to get to the heating element (remove the back panel of the freezer), disconnect the wires and measure the resistance. If the device shows a break (infinity), the heating element has burned out and requires replacement.