The situation when Beko refrigerator stops turning off and buzzes around the clock causes concern for any owner. This is not just an annoying noise, but also a signal that the cooling system is working in emergency mode, trying to achieve the set temperature parameters. If you notice that the equipment works without interruptions, and the food inside may freeze or, conversely, spoil, you cannot ignore the problem. Long-term wear and tear leads to rapid failure of an expensive compressor.
In this article we will analyze in detail the main malfunctions that lead to such operation of the unit. You will learn how to carry out initial diagnostics yourself and in what cases you will need to call a specialist. Understanding the principles of operation refrigeration units will help you quickly identify the root of the problem and save time on finding a solution.
Faults of the thermostat and temperature sensors
The most common reason for continuous operation is the failure of the thermostat (thermostat) or temperature sensors in models with electronic control. This element is responsible for sending a signal to the compressor when the desired level of cold has been reached. If the contacts are stuck in the "on" position or the electronic sensor is transmitting incorrect data, the motor will run constantly, trying to "catch up" with a non-existent temperature.
In mechanical models, the thermostat is a device with a capillary tube that responds to changes in heat. Over time, the mechanism wears out and the spring weakens. In modern models Beko with the system No Frost electronic sensors are responsible for control. Their breakdown often requires diagnostics with a multimeter to check the resistance.
If you find that the temperature regulator does not click when you turn the knob, or an error related to the temperature appears on the display, the problem lies precisely in the control system. Replacing a thermostat is not the most complicated procedure, but it requires care when installing a new capillary tube.
⚠️ Attention: Before replacing the thermostat, be sure to unplug the refrigerator from the network. Do not attempt to repair live electrical components; this can be life-threatening.
It is also worth checking whether the settings are correct. Sometimes users accidentally activate the "Super Freeze" mode, which forces the compressor to work without stopping. Make sure that the indicator for this mode is not lit on the control panel.
Problems with the door seal and heat loss
The second most common reason is a violation of the tightness of the refrigerator compartment. If the rubber seal door is worn out, dirty or deformed, warm air from the room constantly flows inside. Sensors detect an increase in temperature and instruct the compressor to work harder to compensate for the heat gain.
You can check the tightness in a simple way: clamp a sheet of paper between the door and the body in different places around the perimeter. If the paper falls out or pulls out too easily, the seal is poor. Also visually inspect the rubber for cracks, dents, or build-up of grease that is preventing a good seal.
- 🧼 Contamination: Grease and dirt create a gap through which air can pass.
- 🔥 Warp: Prolonged exposure to high temperatures or time makes the rubber hard.
- 🚪 Skew hinges: The door may not close tightly due to displacement of the hinges.
The problem is often solved by thoroughly washing the seal with warm water and soapy water. If the rubber is simply hardened, soften it with special means or silicone grease. However, in case of serious damage, a complete replacement of the seal will be required, since gluing in this case is ineffective.
Refrigerant leak and system blockage
A more serious technical malfunction is a freon leak or a clogged capillary tube. In both cases, the system's cooling capacity drops and the compressor is forced to run continuously to try to reach target values. In the event of a refrigerant leak, there is less working fluid in the circuit, and the pressure drops.
Signs of a leak are often the hot side walls of the refrigerator (instead of warm) or, conversely, their complete cooling. You can also notice swelling of the rear wall inside the chamber or the appearance of yellowish oily spots under the unit. Freon itself has no odor, so it is impossible to detect its leak by smell.
Clogging of the system usually occurs due to moisture trapped in the circuit or oil breakdown products. In this case, freon circulates, but cannot pass through the narrow cross-section of the capillary. The compressor hums, but there is no cold, or it is very weak. Diagnosis of these problems requires special equipment and evacuation of the system.
Is it possible to refill the refrigerator yourself?
Refilling it yourself with freon without professional equipment (scales, vacuum pump, pressure gauge station) is practically impossible and dangerous. An incorrect dose of refrigerant will lead to compressor failure.
Repair in such cases consists of finding the leak, sealing the hole, replacing the filter drier and filling the system with new refrigerant. This is a job for a qualified technician with a license to work with refrigerants.
Malfunction of the compressor and start relay
If the refrigerator hums but does not cool, or the motor runs very loudly and with vibration, the problem may lie in the very “heart” of the unit - the compressor. Over time, the motor-compressor loses its power (compression) and cannot create the necessary pressure in the system, even working around the clock.
Often, along with the compressor, the starting relay fails. This small element is responsible for starting the engine. If the relay contacts are burnt or the mechanism is stuck, the compressor may hum but not start, or start and immediately stall, or run without stopping. Models Beko often use brand relays Danfoss or their analogues.
You can check the relay by carefully removing it and shaking it next to your ear: if you hear a ringing, it means the insides have crumbled. You can also ring contacts with a tester. Replacing the relay is a simple operation that takes 10-15 minutes, and often solves the problem of “failure to turn off” if the motor itself is still in good condition.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Humming, but not | Start relay | Low |
| Works without stopping, no cold | Freon leakage | High |
| Strong vibration and noise | Compressor wear | High |
| Clicking and buzzing | Compressor jammed | High |
⚠️ Attention: If the compressor operates continuously for more than 24 hours, it may overheat. Allow the equipment to cool down before further diagnostics to avoid a fire or permanent motor breakdown.
The influence of operating conditions and placement
Sometimes the reason lies not in the breakdown, but in incorrect operating conditions. Beko refrigerator, like any other equipment, has a climate class that determines the temperature environment in which it can operate effectively. If the unit is standing near a radiator, stove or in direct sun, it does not have time to give off heat.
It is also important to maintain distances from the walls. For normal air circulation around the condenser (black grille at the back), it is necessary to leave a gap of at least 5-10 cm. If the refrigerator is built into a niche or moved close to the wall, heat is not removed, and sensors detect overheating.
- ☀️ Direct sunlight heats the case, increasing the load.
- 🍳 Proximity to heat sources (stove, oven) disrupts heat exchange.
- 🌡️ Installation in an unheated room in winter (below +10°C) can disrupt the thermostat operation.
Check whether the refrigerator is loaded too tightly. If products block the air channels (especially in No Frost systems), cold air does not circulate, and “warm zones” form in the chamber, causing the motor to work longer.
Diagnostics and action algorithm
Before calling a technician, try performing simple diagnostics. This will help you more accurately describe the problem to a specialist or, perhaps, resolve the issue yourself. Start with a visual inspection and checking simple parameters.
☑️ Primary diagnostics of the refrigerator
If you notice that the back wall inside the refrigerator compartment is covered with a “coat” of ice, and there is more snow in the freezer than food, this may indicate problems with the system defrost (heating element, timer or defrost sensor). In this case, the refrigerator can also work without interruption, since the ice blocks the access of cold.
In cases where you are not confident in your abilities, it is better to contact an authorized service center. This is especially true for work related to refrigerants and pipe sealing. Unprofessional intervention can lead to permanent breakdown of the unit.
What to do if the refrigerator has defrosted and stopped freezing?
It is necessary to completely defrost the refrigerator within 24 hours (with the doors open). If, after turning it on, it began to work in normal mode (turns on and off), then the problem was in the defrost system or a blockage. If the compressor does not turn off again, repair is required.
Is it normal for the refrigerator to hum immediately after loading food?
Yes, this is normal. If you have loaded a large quantity of warm food, the compressor will work longer than usual to cool the volume. However, it should still turn off periodically. If it works for days without a break, even with an empty chamber, this is a malfunction.
Can an old refrigerator work non-stop?
Old models are less energy efficient and can work longer than modern analogues, but the “on-off” cycle must be maintained. Constant operation without stopping for any refrigerator, regardless of the year of manufacture, is a sign of a malfunction or violation of operating conditions.
To summarize, we note that the continuous operation of the refrigerator Beko is always a signal for help. Whether it's a simple leaky door or a complex freon leak, ignoring the problem will result in high electric bills and costly repairs. A timely reaction will prolong the life of your household assistant.