The situation when the refrigerator Samsung has no cooling in the upper compartment, but the freezer continues to work normally, is one of the most common complaints from the owners of this equipment. This behavior of the unit often confuses the user, since the compressor, judging by the hum and vibration, is working properly. In most cases, the problem lies not in a complete breakdown of the compressor, but in a violation of the circulation of cold air or a malfunction in the control system, which requires detailed diagnostics.
Modern models Samsung, especially those equipped with a system No Frost, have a complex design, where one compressor serves both chambers through a system of dampers and air ducts If you notice that the temperature on the shelves of the main compartment has risen to room temperature and the food has begun to deteriorate, you must immediately carry out an initial diagnosis. Ignoring the symptoms can lead to more expensive repairs or complete loss of products.
In this article we will look at the main reasons why Samsung refrigerator the upper chamber stopped cooling, leaving the freezer working. We will consider both simple malfunctions that can be fixed independently, and complex breakdowns that require the intervention of a professional technician using specialized equipment.
Problems with the No Frost system and evaporator freezing
The most common reason for this is Samsung It doesn’t freeze in the main compartment, it’s just a banal freezing of the evaporator hidden behind the back wall. In systems No Frost cold air is generated in the freezer compartment and forced by a fan into the refrigerator compartment through special channels. If the defrosting system fails, a coat of ice freezes on the evaporator and blocks the air supply channels, which is why the cold simply does not reach the upper part.
The process of fouling with ice can occur gradually. At first, you may notice that the refrigerator maintains its temperature worse, and then the cooling will stop completely. In this case, the compressor will work almost without interruption, trying to compensate for the lack of cold, which leads to increased energy consumption. Visually, this is not always noticeable, since the evaporator is located inside the housing.
⚠️ Attention: If you hear that the fan inside the freezer is humming, crackling, or is completely silent, this is a sure sign that the blades are frozen into the ice mass. Do not try to forcefully crank the fan - this will damage its motor.
To confirm this theory, it is often enough to listen to the operation of the device. If you do not hear the characteristic fan noise after opening the freezer door, then the air flow is blocked. Also, a “crying” effect may appear on the back wall of the refrigerator compartment or, conversely, complete dryness and absence of condensation, which is not typical for proper operation.
The main components of the defrost system that fail:
- ❄️ Defrost heating element —a heating element that melts ice on the evaporator during pauses in the operation of the compressor.
- ❄️ Defrost sensor —a sensor that informs the control module about the evaporator temperature and gives a command to turn the heating element on or off.
- ❄️ Fuse —a protective element that burns out when the defrosting system overheats critically.
- ❄️ Defrost timer (or relay) - a mechanical or electronic device that regulates freezing and defrosting cycles.
How to quickly check the defrosting system without disassembling?
Plug in the refrigerator and wait 10-15 minutes. Open the freezer door. If cold air blows from there, but does not enter the refrigerator compartment, then the problem is in the damper or clogged air ducts. If the cold does not come out of the freezer at all, but the compressor is humming, the evaporator is probably frozen.
Faulty air duct damper (Damper)
In two-chamber refrigerators Samsung with one compressor, the cold distribution is regulated by a special damper located in the partition between cameras. This mechanism, called damper, opens and closes at the command of the electronic module, regulating the amount of cold air flowing from the freezer into the refrigerator compartment. If the damper is stuck in the closed position or its drive is burnt out, cold air cannot physically enter the upper chamber.
Often, damper failure is associated with mechanical jamming or failure of the drive motor. On electronically controlled models, the display may not show any errors because the control module “thinks” the damper has closed, although physically it remains stationary. This is a classic example of desynchronization of the control signal and the actual position of the mechanism.
Symptoms of a malfunctioning damper:
- 🌡️ In the freezer compartment, the temperature is normal or even below normal, since the cold does not go anywhere.
- 🌡️ In the refrigerator compartment, the temperature gradually rises to room.
- 🌡️ There is no characteristic sound of the damper motor operating when turning on the refrigerator or changing the temperature settings.
To diagnose this malfunction, partial disassembly of the refrigerator is often required to get to the air supply channel. The technician checks the movement of the damper manually and tests the resistance of the drive motor windings. If the motor burns out, it is replaced with a new one. In some cases, the damper may become jammed due to a foreign object or piece of ice getting in there, which can be solved by simple cleaning.
Failures in the operation of the evaporator fan
Air circulation in the system No Frost is impossible without a working fan. It is he who drives the air masses through the evaporator and directs them into the chambers. If the fan stops, the cold remains in the freezer area (where the evaporator is located) but does not enter the refrigerator compartment. As a result, the freezer works, but the refrigerator does not.
The reasons for the fan stopping may be different. The most common one is the freezing of the blades to the body or ice coat. Also, the fan motor itself often fails due to bearing wear or winding breakage. In rare cases, the problem lies in the absence of voltage at the fan contacts, which indicates a malfunction of the control module.
Diagnostics of the fan usually begins with listening. When you open the door of the refrigerator (on some models) or freezer, the fan should stop. If it is silent even with the door closed and the compressor running, this is an alarming signal. It is important to check whether ice or a foreign object is preventing the rotation of the blades.
| Symptom | Probable cause | Necessary actions |
|---|---|---|
| The fan hums, but does not spin | Ice jamming or bearing wear | Defrosting or replacing the fan |
| The fan is silent, the compressor is running | Open circuit or burnt out motor | Check with a multimeter, replacement |
| Noise and vibration during operation | Unbalancing of the blades or ice on them | Cleaning ice, checking fastenings |
Freon leak: partial loss of refrigerant
One One of the most unpleasant situations is a partial leak of refrigerant (freon). Unlike a complete leak, when the refrigerator simply stops freezing everywhere, with a partial loss of gas, the compressor can continue to work, creating a fairly low temperature in the evaporator of the freezer, but the power is no longer enough to cool the entire volume, including the upper compartment.
Freon circulates through the system: first it passes through the evaporator of the freezer, cooling it, and only then, if there is enough of it, goes into the circuit refrigeration compartment. If there is a shortage of gas, the cycle ends prematurely. Visually, this may manifest itself in the fact that the first few rows of tubes in the freezer are cold, and then warm, or the freezer freezes, but weaker than usual.
⚠️ Attention: Freon leakage often occurs in the foamed part of the housing or in soldering areas. It is impossible to find and repair leaks on your own without a vacuum pump and a gas detector. Do not try to simply “top up” the refrigerator - without eliminating the cause of the leak, the gas will come out again after a short time.
Signs of a freon leak:
- 🔥 The compressor works constantly, without stopping, trying to gain temperature.
- 🔥 The condenser (grid at the back) is only partially warm or barely warm.
- 🔥 In the freezer In the chamber, food may thaw or be stored on the verge of freezing.
- 🔥 On the evaporator in the freezer, ice may freeze unevenly (only at the entrance of the tubes).
Faults of the electronic control module
Modern refrigerators Samsung are controlled by complex electronics. The control board receives data from temperature sensors and decides when to turn on the compressor, fan or defrost heating element. If a module glitches or burns out, it may send incorrect commands. For example, it may “believe” that it is already cold in the refrigerator compartment and not open the damper or not turn on the fan.
Often problems with the module arise after power surges. Even if the device looks intact on the outside, the tracks or microcircuits responsible for specific components could have burned out inside. In such cases, the refrigerator may behave chaotically: it may freeze, then stop, or display error codes on the display that do not disappear after a reboot.
To diagnose the module, professional equipment is required. The technician checks the presence of output voltage at the connectors going to the fan, heating element and compressor. If there is no voltage at the output from the board while there is power at the input, the module requires repair or replacement. It is not recommended to solder the board yourself without a circuit diagram and experience, as you can permanently damage the device.
Do-it-yourself diagnostics and troubleshooting
Before calling a technician, you can carry out a number of simple steps that will help identify the cause or even eliminate it if the problem is minor. Remember that any work related to electricity or disassembling the case should only be carried out with the device disconnected from the network.
The first and most effective step is complete defrosting. If the problem was the system freezing No Frost, then 24 hours of inactivity with the doors open will allow the ice to melt. After this, you need to wipe the refrigerator dry and turn it on. If after 5-7 hours it began to freeze in both chambers, the problem was in the defrosting system (heating element, sensor or timer). If the situation repeats after a day, the failed element needs to be replaced.
Checklist for initial diagnostics:
- 🔌 Make sure that the refrigerator is connected to the network and the voltage in the outlet is stable.
- 🔌 Check whether the ventilation holes inside the chambers are not blocked by food.
- 🔌 Listen to the operation of the fan and compressor.
- 🔌 Inspect the door seals for cracks and loose fit.
☑️ Algorithm of actions in case of breakdown
If defrosting did not help, pay attention to the settings. In some models, you can accidentally activate the “Vacation” mode or reset the temperature settings. Reset the settings to factory settings by holding down the appropriate combination of buttons (usually this is described in the instructions for the specific model. Samsung).
When you need to call a technician
There are a number of situations, when self-repair is not only useless, but also dangerous. If you suspect a freon leak, hear extraneous sounds from the compressor, or see sparking in the area of the control board, immediately stop operation and contact a service center. Also, help from a specialist is needed if you need to replace the compressor or complex repair of the system No Frost with disassembly of the housing.
A professional technician has the necessary tools: a multimeter, a leak detector, a vacuum pump and a charging station. He will be able to accurately determine why Samsung it is not freezing in the refrigerator compartment, and eliminate the cause, not the symptom. In addition, service centers provide a guarantee on the work performed and replaced spare parts.
It is worth considering that the cost of repairs may vary depending on the model and the need for replacement. expensive components, such as a compressor or an electronic module. In some cases, especially with older models with a leak in the foam part, repair may not be economically feasible.
Why does a Samsung refrigerator make a loud sound when turned on?
A loud sound (humming, crackling) when turned on is often associated with the fan hitting the ice, or with an attempt to start compressor when the start relay is faulty. If the sound is accompanied by vibration, check the stability of the installation of the refrigerator and the presence of foreign objects at the back.
Is it possible to use the refrigerator if the upper chamber does not work?
For a short time - yes, but it is impossible to operate it in this mode for a long time. The compressor will work without interruption, trying to cool the volume, which will lead to it. overheating and eventual failure. In addition, the products in the upper chamber will quickly deteriorate.
How often do you need to defrost the No Frost refrigerator?
The system No Frost implies automatic defrosting of the evaporator. However, for hygiene and checking the operation of the system, it is recommended to completely defrost and wash the refrigerator. at least 1-2 times a year. This will extend the service life of the equipment.
What does the flashing temperature indicator on Samsung mean?
Flashing temperature numbers usually indicate that the camera has not reached the set temperature. This may be due to recent switching on, loading of a large amount of warm products, or a malfunction of the cooling system.