The situation when you open the refrigerator door and there is room temperature inside always causes panic. Products begin to deteriorate, and there is an urgent need to understand why the refrigerator broke and whether it is possible to fix it yourself. In most cases, the unit stops freezing not because of a fatal breakdown, but due to a violation of simple operating rules or the failure of one of the sensors.
The first thing that needs to be done is to carry out initial diagnostics without disassembling the case. Often the refrigerator does not freeze because the heat exchange is disrupted, or the thermostat settings have been knocked down. If you notice that the food in one chamber is frozen, but in the other, on the contrary, it is warm, this indicates problems with air circulation or the operation of the No Frost system. Ignoring the first signs of a malfunction can lead to more serious consequences and costly repair of the compressor.
In this article we will analyze in detail the main reasons why The refrigerator has stopped freezingand draw up a step-by-step action plan. You will learn to distinguish a software failure from a mechanical breakdown and understand in which cases calling a technician is really necessary. It is important to act consistently so as not to aggravate the situation.
Primary diagnostics: checking the power supply and settings
Before looking for complex technical faults, eliminate trivial errors. Often, users accidentally touch the temperature control knob or pull out the plug from the socket while cleaning. If the refrigerator does not turn on and does not make any sounds, check the presence of voltage in the network. The indicator on the control panel should be on, and the lighting inside should work.
Pay attention to the set operating mode. In modern models Indesit, Bosch or LG the “Vacation” or “Eco” mode could be activated, in which the main chamber is not cooled, and the freezer operates in economy mode. Also check if the settings have been lost after a power surge.
⚠️ Attention: If you have recently defrosted the refrigerator, do not turn it on immediately. The compressor needs time (from 2 to 4 hours) to stabilize the pressure in the system, otherwise it may burn out.
Make sure that the door fits tightly to the housing. If the sealing rubber is worn out or dirty, warm air enters the chamber, and the unit simply does not have time to cool it. This is a common reason why The refrigerator does not freeze well, while working without a break. Check the tightness with a sheet of paper: hold it with the door and try to pull it out. If the paper is easily removed without resistance, the seal requires replacement or cleaning.
Problems with the thermostat and temperature sensors
One of the most common reasons why the refrigerator does not freezeis a malfunction of the thermostat. This element is responsible for turning the compressor on and off depending on the temperature inside the chambers. If the thermostat is “stuck” in the “Off” position, the compressor will not receive a signal to start, and the cold will stop being produced.
In models with electronic control, air sensors are responsible for temperature control. Their failure results in the control module receiving incorrect data and not starting the cooling cycle. Diagnostics of such elements requires the use of a multimeter to test the continuity of the circuit. If temperature sensor shows an open or short circuit, it must be replaced with a new one.
Symptoms of a thermostat malfunction often manifest themselves in the fact that the refrigerator either does not turn on at all, or works without stopping, trying to reach a non-existent temperature threshold. In the first case, the products are defrosted, in the second, even those that should not be frozen. Replacing the thermostat in mechanical models is a procedure that can be done with your own hands if you have basic tools.
How to check a mechanical thermostat?
To check, remove the thermostat and immerse its sensitive tube in cold water with ice. Close the contacts with a multimeter: if there is no click or change in readings when cooling, the part is faulty.
Faults of the compressor and start relay
The heart of the refrigeration unit is the compressor. If you hear clicking but does not start, or it starts for a few seconds and stalls, the problem lies in the start protection relay or the motor itself. The relay is responsible for starting the engine, and its breakdown is a common cause of equipment failure. the refrigerator is humming, clicks, but does not start, or starts for a few seconds and stalls, the problem lies in the start-protection relay or the motor itself. The relay is responsible for starting the engine, and its failure is a common cause of equipment failure.
When the compressor runs continuously, but there is no cold, this may indicate a loss of performance. The piston group could be worn out, and the motor is simply not able to create the necessary pressure for the circulation of the refrigerant. In this case, professional diagnostics are required and, most likely, replacement of the compressor.
- 🔌 Symptom: Clicking, buzzing for 5-10 seconds, silence. Cause: The starting relay is faulty or the compressor is jammed.
- 🔥 Symptom: The compressor is very hot, runs non-stop. Cause: Loss of freon or system leakage.
- 🤐 Symptom: Complete silence, the refrigerator does not respond to being turned on. Cause: A broken motor winding or lack of power.
It is important to note that replacing a compressor is a complex process that requires evacuation of the system and charging with freon. It is impossible to perform this operation independently without special equipment. If the diagnostics indicates “motor”, it is better to contact a service center.
Freon leakage and blockage of the capillary system
Freon is refrigerant that circulates through a system of tubes, taking heat from the chambers. If a microcrack has formed in the circuit, the gas gradually evaporates. When the amount of freon becomes critically low, the refrigerator stops freezing. Leakage often occurs at soldering points or due to corrosion of the evaporator, especially if you used sharp objects to defrost.
Another problem is a clogged capillary tube. An ice or oil plug may have formed in the system, blocking the movement of refrigerant. In this case, the compressor works, trying to pump gas, but circulation does not occur. A characteristic sign is that the condenser grille at the back remains cold, although the motor is hot.
| Symptom | Freon leakage | System clogged |
|---|---|---|
| Compressor operation | Works for a long time or constantly | Works with overload |
| Condenser temperature | Partially warm or cold | Hot to the point of blockage |
| Evaporator | Does not cool at all | May be partially covered with frost |
To eliminate these problems, you need to call a technician. It is necessary to find the leak, seal it, replace the filter drier, pump out the air with a vacuum pump and fill the system with new freon in a strictly defined amount.
Failures in the No Frost system and fan operation
In refrigerators with the system No Frost the cold is distributed forcibly using a fan. If you hear the motor running but no air is circulating, the fan or defrost system may be faulty. The evaporator becomes overgrown with a “fur coat” that blocks the air supply channels.
A timer, a heating element (heating element) and a defrost sensor are responsible for defrosting the evaporator. If one of these elements fails, the ice does not melt, and after some time the refrigerator stops freezing in the main chamber, although it may be cold in the freezer. The fan may simply freeze in an icy shell and stop rotating.
☑️ Diagnostics of the No Frost system
Complete defrosting of the refrigerator within 24 hours often helps. If after switching on the problem returns within a week, it means that one of the elements of the defrost system requires replacement. A visual inspection of the evaporator (often it is necessary to remove the back panel in the freezer) will immediately show the presence of an ice plug.
Influence of the environment and proper operation
Sometimes the reason why the refrigerator does not freezelies not in the breakdown, but in the operating conditions. The units are designed to operate in a specific climate class. If the refrigerator is located near the radiator, in direct sunlight or in an unheated garage in winter, it may not work correctly.
Overfilling the chambers with food also disrupts air circulation. Cold air should freely wash the food. If you pack the shelves tightly, the fan will not be able to move air through the evaporator. In addition, hot food placed on the shelf temporarily increases the overall temperature, causing the compressor to work harder.
⚠️ Attention: Do not install the refrigerator close to the wall. For normal operation of the condenser, a gap of at least 5-7 cm is required for free air circulation around the rear grille.
Check the position of the refrigerator. If it is not level, the door may not close completely on its own. Use a spirit level to adjust the legs. Correct installation extends the life of the equipment and ensures effective cooling.
When you need to call a professional technician
Independent repair is possible by replacing the thermostat, start relay or seal. However, there are situations when the intervention of a non-professional will lead to final breakdown of the unit. If diagnostics indicate problems with the tightness of the circuit, freon leakage or compressor failure, it is better not to risk it.
The master has the necessary equipment: a pressure gauge station, a vacuum pump, a leak detector. In addition, specialists know where exactly in your model (Samsung, Beko, Stinol) problems most often arise, and can diagnose faster.
Do not try to solder pipes or open sealed parts of the system yourself. This is not only dangerous, but also often leads to moisture entering the system, which will damage the compressor in no time. Entrust complex repairs to qualified specialists.
Why does the refrigerator freeze but does not turn off?
If the refrigerator runs without interruption, this may indicate a freon leak (the compressor is trying to compensate for the lack of cold), wear on the door seal, or a malfunction of the thermostat that does not give a signal to turn off.
Is it possible to operate a refrigerator if it does not freeze well?
Short-term - yes, but this will lead to food spoilage and increased energy consumption. Long-term operation in this mode wears out the compressor, which can lead to its complete failure.
How often do you need to defrost a No Frost refrigerator?
The No Frost system involves automatic defrosting of the evaporator. However, it is recommended to completely defrost the refrigerator once a year, unplug it and wash it to remove bacteria and check the operation of the fans.
What to do if after defrosting the refrigerator does not freeze?
Wait 4-6 hours. If cold does not appear, the evaporator may have been damaged during defrosting (pierced with a knife) or moisture got into the system. In the first case, soldering will be required, in the second - vacuuming the system.