The situation when you you open the refrigerator door, and it’s warm there, it always takes you by surprise. This is not just a household inconvenience, but a signal of a serious malfunction that requires immediate attention. If the refrigerator has stopped freezing, food begins to deteriorate in a matter of hours, so you need to act quickly and calmly.
Modern units, be it Indesit, Bosch or Liebherr, are equipped with complex electronics, which often itself reports a problem. However, even without a digital display, you can understand what happened if you carefully listen to the operation of the motor and examine the insides of the camera. In this article we will analyze the main breakdown scenarios and methods for eliminating them.
The first thing to do is to assess the scale of the disaster. Check if the light is on, if the fan is running and if the compressor is making any sounds. If the compressor is silent, but the light is on, the problem often lies in the start relay or thermostat, and not in the engine itself. Do not rush to call a technician unless you have done the initial diagnostics yourself.
Primary diagnosis and simple causes
Before you panic and look for the service center number, you should exclude trivial things. It often happens that the equipment is in good working order, but the operating conditions are violated. For example, you may have filled the chamber too tightly with food, blocking the flow of cold air to the sensors. In models with No Frost this is critical, since air circulation is the basis of their operation.
Check the tightness of the door. If the rubber seal is worn out, dirty, or simply does not allow the door to close completely due to misalignment, the cold will evaporate faster than it is produced. The compressor will work hard, trying to compensate for heat inflows, but in the end it may simply turn off due to overheating.
⚠️ Attention: If you notice that the door does not close tightly due to the housing being skewed, do not try to forcefully slam it. This may damage the hinges or lead to depressurization of the system.
It is also worth paying attention to the location of the unit. If it stands close to the wall or in a niche without gaps, heat transfer is disrupted. The rear grille (condenser) requires free air circulation to function properly. The absence of an indentation of 5-10 centimeters can lead to the fact that the refrigerator stops freezing even with a working compressor.
Here are the main points for a quick check:
- 🔌 Check whether the plug is firmly inserted into the socket and whether there is voltage in the network.
- ❄️ Make sure that the food does not block the ventilation holes inside the chamber.
- 🚪 Inspect the seal for cracks, adhering debris or deformations.
- 🌡️ Check if the “Super Freeze” mode is accidentally set, which may not have turned off.
Problems with defrosting in No Frost systems
If your refrigerator is equipped system No Frost, but ice has appeared on the back wall of the chamber or at the bottom of the drawers, and the cold has disappeared - this is a classic sign of a malfunction of the defrost system. In such models, the evaporator is hidden behind a plastic panel, and ice should not accumulate there. If this happens, it means that the automation has stopped removing frost.
Three main elements are responsible for the defrosting process: Defrost heating element, defrost sensor and timer (or an electronic module). When one of them fails, the ice coat grows so large that it blocks the air supply channels. As a result, the fan circulates air, but it does not cool, and the food in the main chamber begins to melt.
To confirm the diagnosis, partial disassembly is often required. It is necessary to remove the back panel in the freezer and visually assess the amount of ice. If the evaporator is covered in snow and the heating element is cold and the tester does not ring, the problem is in the heater. If the heating element is intact, but does not turn on, the circuit is interrupted by a sensor or timer.
Symptoms of a malfunction of the defrost system:
- ❄️ The presence of ice or frost on the back wall of the refrigerator compartment.
- 📉 The temperature in the chamber is above normal (+10...+15°C), although the compressor is working.
- 🔊 Fan hum, which may change or disappear due to icing of the blades.
Faults of the compressor and start relay
The compressor is the heart of the refrigerator. If it doesn't start, there won't be any cold anywhere. Owners often confuse the breakdown of the motor itself with failure start relay. This is a small part that provides the starting impulse. If the relay is burned out, the compressor may hum, click, but not start, or be completely silent.
The situation when the motor hums for 5-10 seconds, then there is a click and there is silence, almost always indicates a relay or a jammed compressor. In the first case, repairs will be inexpensive: you need to replace the relay, choosing an analogue in terms of power and type. In the second case, if the motor shaft is jammed, an expensive replacement of the entire unit will be required.
It is also worth taking into account the depletion of the resource. The average service life of modern compressors is 10-15 years. If your Atlanta or Samsung is already many years old and has begun to act up, the piston group may have worn out. In such cases, the pressure in the system drops and freon stops circulating with the required efficiency.
It is important to understand the difference between work and efficiency. The compressor can run continuously without turning off, but without freezing. This indicates a loss of performance, a freon leak, or a clogged capillary tube. In this case, the motor tries to compensate for the lack of cold, working at the limit.
Refrigerant leak and system blockage
Freon is the working fluid of the refrigeration cycle. If a microcrack occurs in the circuit, the gas gradually evaporates. Symptoms of a leak increase gradually: at first the refrigerator freezes worse, then it stops turning off, trying to reach the temperature, and eventually stops freezing at all.
One of the sure signs of a leak is the temperature of the condenser (the grill at the back or the side walls). In good condition they should be warm or hot. If the compressor is running and humming, but the grille is cold, most likely the freon has escaped. Also, traces of oil may appear on the tubes near the compressor, as it circulates along with gas.
⚠️ Attention: Filling a refrigerator with freon is not just “topping up gas.” Requires evacuation of the system, detection and elimination of leaks, as well as accurate dosage of refrigerant. It is impossible to do this on your own without equipment.
Another common problem is clogging of the capillary tube. Not only freon circulates in the system, but also oil, and oxidation products or moisture can also enter. Over time, a plug forms in the bottleneck of the capillary. The pressure before the plug increases, and after it drops, circulation stops.
Signs of a blockage are often similar to a leak, but there is a nuance: if blocked, the compressor can work very loudly, and the condenser will only be hot in the area before the blockage. Sometimes purging the system with nitrogen helps, but more often it is necessary to replace the filter-drier and capillary tube.
Control electronics and temperature sensors
In modern electronically controlled models, control moduleis responsible for all processes. It receives signals from temperature sensors and makes a decision: turn on the compressor, start the fan or start defrosting. If the “brains” are faulty or one of the sensors is lying, the refrigerator behaves inappropriately.
For example, if the temperature sensor in the refrigerator compartment fails and shows the module that it is -20°C (although in fact +20°C), the compressor simply will not turn on. Or vice versa, the freezer sensor shows that there is enough cold, and the unit does not go into freezing mode.
Often, electronics signal a problem with error codes on the display or blinking indicators. The decoding of the codes depends on the brand:
| Brand | Indication | Probable cause |
|---|---|---|
| LG | Code FF or Er FF | Fan or system malfunction defrost |
| Samsung | Flashing of all indicators | Communication error between modules or sensors |
| Bosch/Siemens | Red triangle is on | Increase in temperature in the chamber (emergency mode) |
| Indesit | Alarm lamp is flashing | Temperature violation |
Failures in electronics can be caused by power surges in the network. If the lights in your home flicker frequently, it is recommended to install a stabilizer. A power surge could damage not only the module, but also the sensors, which are the most vulnerable elements of the circuit.
When you need to call a technician
There is a fine line between do-it-yourself repairs and professional intervention. If the problem is solved by replacing the light bulb, adjusting the legs or defrosting, feel free to get down to business. But there are cases when you cannot do without special tools and knowledge.
Opening the refrigeration circuit (replacing a compressor, eliminating leaks, replacing a capillary) requires a vacuum pump, a pressure gauge station and a supply of freon. In addition, these works involve high temperatures (torch soldering) and pressure. Inept actions can lead to complete failure of the unit or even an explosion.
It is also worth contacting a professional if:
- 🛠️ The compressor needs to be replaced (precise filling with oil and freon is required).
- 🔍 The malfunction fails diagnose visually or by sound.
- ⚡ A voltage breakdown has occurred on the case (an electric shock is felt when touched).
- 📜 The refrigerator is under warranty (self-repair will void it).
⚠️ Attention: When working with electrical components inside refrigerator, always unplug the appliance. The capacitors on the control board can retain a charge even after being turned off.
A professional technician will conduct a full diagnosis, check the pressure in the system, the integrity of the motor windings and the tightness of the circuit. This will allow you to avoid purchasing unnecessary spare parts at random, which often happens during self-repair.
Prevention and operating rules
To prevent the question “why the refrigerator stopped freezing” from suddenly arising, it is important to follow the operating rules. Regular defrosting (even for No Frost systems once every year or two) prolongs the life of the unit. Do not place hot pots inside - this puts extreme stress on the compressor and leads to the formation of ice jams.
Keep the condenser clean. Dust and pet hair clinging to the rear grille act as a heat insulator. The compressor overheats and shuts down. It is enough to vacuum the back of the refrigerator once every six months to ensure normal heat exchange.
Do not overload the chamber with products above the red line (if there is one) or the evaporator level. The air should circulate freely. Also avoid installing the refrigerator next to yourself: radiators, stoves or in direct sunlight. This forces the equipment to work in enhanced mode.
Following these simple recommendations will allow your Liebherr, Whirlpool or any other brand to last for many years without serious breakdowns. Remember that prevention is always cheaper and easier than complex repairs.
Why does the refrigerator freeze but does not turn off?
This may be a sign of a freon leak, a clogged capillary tube, or a malfunctioning thermostat. The unit works hard, trying to reach the set temperature, but cannot do this due to loss of efficiency.
Is it possible to turn on the refrigerator immediately after defrosting?
Yes, modern models can be turned on immediately. However, if you carried out repairs by opening the circuit or replacing the compressor, you need to wait 2-4 hours for the oil to drain into the crankcase.
What to do if there is water in the refrigerator, but there is no cold?
Most likely, the drainage hole is clogged. Water from melted ice does not go into the pan, but accumulates at the bottom of the chamber. It is necessary to clean the hole with a soft wire or a brush.
How to understand that the compressor has burned out?
If, when turned on, the machine in the panel knocks out, a strong burning smell is heard, or the motor hums, but does not start and gets very hot - probably an interturn short circuit of the winding.
Are frequent power outages harmful to the refrigerator?
Yes, power surges and frequent restarts are harmful to the compressor and electronics. It is advisable to use a voltage stabilizer or surge protector with protection.