The situation when a two-chamber refrigerator Samsung stops freezing always takes you by surprise. This is not just a household inconvenience, but a direct threat to the safety of food and the family budget. The owner immediately begins to panic, trying to understand whether it is possible to fix the problem on his own or call a technician.
Unlike old models with a crying evaporator, the system No Frost is more complex, and there can be many reasons for failure. From a simple thermostat failure to a serious refrigerant leak in a sealed circuit. In this article we will analyze in detail the mechanics of the process and pinpoint diagnostics of faults.
First of all, it is necessary to exclude external factors. If the refrigerator is turned on, the light is on, but there is no cold, this indicates a violation of the refrigerant circulation cycle or a failure in the electronics control. Double-chamber models they can behave differently: sometimes the cold disappears only in the freezer, and in the refrigerator compartment, on the contrary, there is heat.
Important understand that modern units Samsung equipped with a self-diagnosis system. Before starting any active actions, you should listen to the operation of the compressor. Is it buzzing? Does it start at all? Answers to these questions will narrow the search for the problem several times.
Primary diagnosis and simple causes
The most common mistake users make is ignoring basic operating rules. If your Samsung refrigerator stops freezing, do not rush to look for complex technical defects. Start by checking the tightness of the door and the condition of the seals. Even a microscopic gap leads to a constant influx of warm air, which the system cannot cope with.
The second important point is the temperature regime in the room. If the unit is located next to the battery or in direct sunlight, the operating efficiency compressor lowers. Also check that the ventilation grilles on the back or sides of the chassis are not blocked. For normal air circulation, a gap of at least 5-7 cm is required.
⚠️ Attention: If you have just defrosted the refrigerator or washed it, do not turn it on immediately. Wait at least 2-3 hours for the oil in the compressor to flow into the crankcase, otherwise water hammer and engine jamming are possible.
Sometimes the problem lies in overloading the chambers with products. If you've packed your freezer tightly with meat and vegetables, blocking the cold air from escaping, the temperature sensors may give incorrect readings. The system No Frost requires free space for flow circulation.
Check the settings in the menu. A random electronic failure or power surge could disrupt the mode Super Freeze or activate a demo mode in which the compressor does not start. Return the settings to factory values through the control panel.
Faults in the defrost system (Defrost)
One of the most common reasons why it does not freeze Samsung No Frostis the failure of the automatic defrosting system. Ice builds up on the evaporator, the fan stops spinning, and cold air simply does not enter the chambers. Visually this may not be noticeable, since the evaporator is hidden behind the back wall.
The system includes a heating element (heater), a defrost sensor and a timer (or electronic control module). If the heating element burns out, the ice does not melt. If the sensor breaks, the control module “does not know” that it is time to heat the evaporator. As a result, a “fur coat” is formed that blocks the operation of the fan.
- 🔥 Defrost heating element —a heating element that can burn out or become covered with scale, reducing heat transfer.
- 🌡️ Thermal sensor —controls the temperature of the evaporator, often fails due to heating and cooling cycles.
- ⏱️ Defrost timer —in older models it is mechanical, in new ones it is part of the electronic board, responsible for switching cycles.
You can diagnose this problem by listening to the operation of the fan. If you do not hear air noise when the freezer door is open, and you can see frost on the back wall, the defrost system is not working. In this case, you need testing with a multimeter all elements of the circuit.
⚠️ Attention: The resistance parameters of the heating element and sensors may differ depending on the specific model Samsung. Check the data with the technical documentation or service manual for your refrigerator series.
How to check the heating element without disassembling?
Completely defrost the refrigerator (24 hours). If after turning it on it starts to freeze normally, and after 1-2 weeks the problem returns, the defrosting system (heating element or sensor) is 90% to blame.
Problems with the compressor and start relay
The heart of any refrigerator is the compressor. If it does not start or works intermittently, there will be no cold anywhere. In two-chamber models Samsung there are often both inverter and classic compressors. The nature of the failure can be different.
The starting relay often fails. This device is responsible for starting the engine. If the relay is stuck or burnt out, the compressor may hum, click, but not start. In such cases, the motor quickly heats up and the thermal protection is triggered, after which there is a click and silence.
A more serious problem is an interturn short circuit of the windings or a wedge of the piston group. If the compressor turns on for 5-10 seconds and turns off making a loud clicking noise, this is a bad sign. Replacing a compressor is an expensive procedure that requires evacuation of the system and refilling with freon.
Inverter compressors, which are positioned as quiet and economical, are sensitive to power surges. If the inverter control module burns out, the compressor will no longer receive the correct commands. Diagnostics of such units requires special equipment.
Refrigerant leak (Freon)
If the compressor runs continuously without turning off, but there is no cold or it is very weak, most likely there is a refrigerant leak. Freon is a working fluid that transfers heat. Without it, the cooling cycle is impossible. In systems No Frost leaks occur less frequently than in older models, but they are possible.
Most often, freon escapes through microcracks in sealed connections or through corrosion of the evaporator (especially if it is aluminum and was damaged when defrosting with a knife). Sometimes a leak occurs in the door perimeter heating circuit.
| Symptom | Probable cause | Action |
|---|---|---|
| The compressor is hot, running non-stop | Leakage freon | Searching for leaks, evacuation, refilling |
| The refrigerator is silent, there is no light | No power / Cord burnt out | Checking the socket and cable |
| Freezer works, it's warm in the refrigerator compartment | Faulty damper or sensor | Checking the air ducts and damper |
| The compressor clicks and stalls | Start relay or motor wedge | Replacing a relay or compressor |
It is difficult to find the leak on your own, since freon is colorless and odorless. Craftsmen use leak detectors or the water immersion method (for removed components). Refilling the system requires strict adherence to the dosage and type of gas indicated on the nameplate (usually R600a or R134a).
Faults in electronics and sensors
Modern two-chamber refrigerators Samsung are stuffed with electronics. Several sensors are responsible for the temperature regime: freezer compartment, in the refrigerator compartment, defrost sensor, drip receiver defrost sensor. The output of any of them can disrupt the operation algorithm.
If an error code lights up on the display (for example, 22C, 33C or the indicators are flashing), this is a direct hint from the system. The decoding of the codes can be found in the instructions or service manuals. For example, an error. often indicates an open circuit of the sensor.
- ❄️ fridge compartment sensor — regulates the operation of the compressor based on the air temperature in the positive chamber.
- 🧊 Freezer sensor cameras —monitors the temperature in the freezer, often affects the operation of the fan.
- 🔌 Control module —the “brain” of the refrigerator, which can burn out from a power surge or moisture.
Sometimes the problem is solved by rebooting the “brains”. Unplug the refrigerator for 15-20 minutes. This will allow the capacitors to discharge and the system will start again, possibly resetting the software glitch.
Clogged capillary system
A rare but possible cause is a clogged capillary tube. Oil and freon circulate in the system. Over time, especially if the seal was broken during a previous repair, moisture or oil breakdown products may enter the tube. An ice plug or mud blockage forms.
The symptoms are similar to a leak: the compressor works, but there is no cold. In this case, the condenser (grid at the back) may be only partially warm, and the tube at the outlet of the compressor may be cold or covered with frost.
Removing the blockage requires purging the system with nitrogen under high pressure and replacing the filter-drier. This is a complex procedure that cannot be performed without a professional tool at home.
When to call a technician and when to fix it yourself
Refrigerator repair Samsung No Frost with your own hands is only possible if you replace simple components: heating elements, sensors, start relay or fan. If you know how to hold a multimeter in your hands and understand the basics of electrics, you can handle these tasks.
However, if we are talking about finding a leak, refilling with freon, replacing a compressor or repairing an electronic board, it is better not to take risks. Inept actions can lead to final breakdown of the unit or even a fire hazard.
☑️ Checklist before calling a technician
Remember that tampering with the sealed circuit on your own will void your warranty. If the refrigerator is new, immediately call an authorized service center. For older models, calling a technician is often economically justified, since buying a new unit will cost much more.
Why does a Samsung refrigerator work, but does not freeze after defrosting?
Most likely, you did not keep it turned off long enough. If the ice in the evaporator has not completely melted, water may have frozen in the drain tube or blocked the fan when turned on. The defrost heating element could also fail because it did not warm up the system.
Can a Samsung refrigerator not freeze due to a power surge?
Yes, power surges often damage the starting relay, compressor or electronic control module. If after the jump the refrigerator is silent or hums and turns off, the problem is in the electrics.
How to understand that the compressor has burned out and not the relay?
You need to ring the compressor windings with a multimeter. If the resistance is infinite (open) or close to zero (short), the compressor is faulty. If the windings are intact, but the motor does not start and hums, most likely the mechanics are jammed or the relay is faulty.
What to do if ice is frozen in the Samsung freezer, but it is warm in the refrigerator compartment?
This is a classic sign of a malfunction of the No Frost system. Ice has blocked the air passages. You need to completely defrost the refrigerator (at least 24 hours). If the problem repeats after 1-2 weeks, change the defrost heating element or sensor.