The situation when suddenly the freezer breaks downalways takes you by surprise, threatening damage to food supplies. At this moment, it is important not to panic, but to act quickly and consistently to minimize losses. The first step is to assess the scale of the problem: did the lower compartment simply stop freezing or did the temperature begin to rise throughout the refrigerator.
Often the cause is a simple power outage or a malfunction in the electrical network, which could reset to zero after the power was restored. However, if there is light in the house, but compressor does not make the usual sounds of operation or, on the contrary, hums continuously, then the problem lies inside the unit. In this material we will analyze the main scenarios of equipment behavior and action algorithms.
It is worth immediately noting that some faults can be eliminated independently, having a minimum set of tools, while others require the intervention of a professional. If you notice a refrigerant leak or damage to the tubes, immediately stop attempting repairs and block children's access to the device. Further operation in this condition can be dangerous.
Initial diagnostics and visual inspection
Before disassembling the unit or looking for the service center number, conduct a thorough primary diagnostics. This will help save time and money if the problem turns out to be trivial. Users often miss obvious things, focusing on complex technical components.
Start by checking the integrity of the door and sealing rubber. If the rubber band seal does not fit tightly, warm air constantly enters inside, and the chamber cannot reach the desired temperature. Visually inspect the surface for cracks, creases or adherence of crumbs that interfere with tight closure.
Pay attention to the indicators and display if your model refrigerator is equipped with them. Modern self-diagnosis systems often display error codes that directly indicate a faulty unit. The decoding of the codes for your model Indesit, Bosch or LG can be found in the instructions or on the manufacturer's website.
Also check if the defrost button or the “Super Freeze” function is blocked if it was turned on manually. Sometimes accidental pressing of the touch panel by children leads to a change in the operating mode, which is perceived by the owners as a breakdown.
Problems with defrosting and freezing of ice
One of the most common reasons why it stopped working freezer compartmentis a violation of the defrosting cycle. In systems No Frost i Low Frost moisture is removed automatically, but if this mechanism fails, the evaporator becomes overgrown with a “fur coat” that blocks air circulation.
An ice crust interferes with heat transfer, and the sensors begin to receive incorrect data, due to which the compressor may not work correctly or shut down prematurely. Visually, this manifests itself in the form of a large amount of snow on the back wall or bottom of the chamber.
⚠️ Attention: Under no circumstances try to break off the ice with a knife or sharp objects. This is guaranteed to lead to breakdown of the evaporator tubes and leakage of freon, which will make repairs economically unfeasible.
To solve the problem, complete manual defrosting is often required. Leave the refrigerator turned off for 10-12 hours with the doors open. This will allow the ice to melt naturally. If, after turning on, the problem returned after a week or two, it means that one of the elements of the defrosting system has failed.
☑️ Complete defrosting algorithm
Malfunctions of the thermostat and temperature sensors
If the freezer does not turn on or works without stopping, the culprit is often becomes thermostat or an electronic sensor. Older models use a mechanical thermostat, which is a capsule with gas or liquid that responds to changes in temperature.
If the mechanical regulator breaks down, the circuit does not close and the signal to start the compressor is not received. In more modern units, such as Samsung or Haierelectronic sensors are responsible for this. Their readings may be distorted due to oxidation of the contacts or an internal defect.
Checking the thermostat requires a multimeter. It is necessary to “ring” the contacts in different positions of the regulator. If the device shows an open circuit even when the knob is turned to the maximum cold position, the part must be replaced. This is a consumable item that is easy to find in spare parts stores.
How to check the sensor with a multimeter?
To check the temperature sensor, you need to remove it and immerse the tip in water with ice. The resistance of a working sensor should change smoothly. A sharp jump or lack of response indicates a malfunction of the element.
Replacing the sensor usually does not take much time, but requires care when connecting the connectors. It is important to use a part with exactly the same characteristics, otherwise the operating modes of the refrigerator will be disrupted, which will lead to rapid spoilage of food or icing.
Failures in the operation of the compressor and start relay
The heart of any refrigerator is compressor. If it is silent, although the light inside the chamber is on, or it makes clicks and hums, but does not start, the problem may be in the start relay or the motor itself.
The start relay is a small box that provides an impulse to start the engine. Over time, the contacts inside it burn out, or the bimetallic plate becomes deformed. This is the most common reason why the compressor clicks but does not start.
If the relay is working properly, but the engine still does not start or immediately turns off due to thermal protection, there may be a winding break or the piston group is jammed. In this case, the compressor needs to be replaced, which is a complex and expensive procedure.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Clicks, but does not start | Faulty starting relay | Low (part replacement) |
| Humming and turning off | Compressor jammed or low voltage | High (motor replacement) |
| Works constantly | Freon leak or thermostat failure | Medium/High |
| Complete silence | Open circuit or burned out module | Average |
When replacing the starting relay, it is important to strictly observe the orientation of the part during installation. The housing usually has an arrow indicating the up position (“UP”). Incorrect installation can lead to instant combustion of a new part or damage to the compressor windings.
Refrigerant leakage and problems with the circulation system
If the compressor works almost non-stop, it hums, but there is no cold in the freezer (or it is very weak), most likely it has occurred freon leak. The refrigerant circulates in a closed circuit, and any violation of the tightness leads to its gradual disappearance.
A leak can occur in the foamed part of the body due to corrosion of the tubes or at soldering points. Finding a leak on your own without special equipment (leak detector) is almost impossible. In addition, you can’t just add freon - you need to find and fix the hole.
⚠️ Attention: Operating a refrigerator with a refrigerant leak leads to overheating and combustion of the compressor, since freon also cools the motor windings. At the first signs of loss of cold, it is better to turn off the device.
The second option for problems with circulation is a clogged capillary tube. An ice or oil plug forms in the system, blocking the movement of gas. In this case, the compressor may operate jerkily, and the condenser (grid at the back) will only be partially hot.
Repairing such faults requires calling a technician with a vacuum pump and a gas station. The process includes searching for leaks, soldering, evacuating the system and charging the exact amount of refrigerant indicated on the nameplate.
When you need to call a professional technician
Although many minor faults can be fixed with your own hands, there are situations where the intervention of an unqualified person will only aggravate the situation. Understanding the limits of your capabilities will save you money on more expensive repairs.
Be sure to call a specialist if you need to open a sealed circuit, replace a compressor, or complex repair of an electronic control module. These works require special tools, knowledge and compliance with safety regulations.
Also, the help of a professional is needed if, after self-defrosting and replacing visible parts (lamp, thermostat), the problem is not solved. It is better to entrust complex diagnostic procedures to those who have access to technical manuals and experience working with specific brands, such as Stinol, Beko or Whirlpool.
Prevention and care of the freezer
In order freezer compartment to serve for a long time and not require frequent repairs, you must follow simple operating rules. Regular maintenance extends the life of all units of the unit and maintains energy efficiency.
Once every six months, it is recommended to completely defrost and wash the internal surfaces. Even in systems No Frost moisture can accumulate in hard-to-reach places, creating a favorable environment for bacteria and unpleasant odors.
Keep the condenser grille at the back of the refrigerator clean. Dust and animal hair, accumulating there, worsen heat transfer, forcing the compressor to work with increased load. You need to vacuum the grill carefully so as not to crush the thin slats.
Do not load the chamber with food above the “Maximum Load” level and do not place hot foods inside. Sudden temperature changes and disruption of air circulation are the main enemies of the durability of refrigeration equipment. Following these simple rules will allow you to avoid most of the problems described above.
Why does the freezer become covered with ice after defrosting?
Most often this indicates a malfunction of the defrost system: the evaporator heating element has burned out, the defrost relay is stuck, or the defrost sensor has failed. Ice blocks the air supply channels, and cold stops flowing into the chamber.
Is it possible to operate the refrigerator if the thermostat is broken?
It is highly not recommended. Without temperature control, the compressor will either run constantly (which will cause it to burn out) or not turn on at all (which will spoil the food). Urgent replacement is required.
How long should the refrigerator cool down after defrosting?
After complete defrosting and washing, you must leave the appliance turned off with the doors open for at least 2-4 hours to equalize the temperature and dry out the moisture. It should be turned on empty.
What do clicks in the freezer mean?
Single clicks may be normal (thermostat operation or plastic expansion). Frequent clicks in the rhythm of the compressor (turning on and off) indicate a malfunction of the start relay or problems with the motor windings.