The situation when the refrigerator Atlant works without interruption is familiar to many owners of this equipment. A unit humming around the clock not only increases electricity bills, but also creates a constant background noise that can interfere with rest. Moreover, continuous operation compressor indicates that the cooling system cannot achieve the specified parameters, which in the long run threatens serious damage to the motor.
Before calling a technician or disassembling the device, you need to understand the nature of the problem. Sometimes the reason lies in simple inattention, for example, in a door that is not tightly closed or in an incorrectly set mode. However, most often the absence of rest cycles indicates a technical malfunction of the cooling system components or a violation of the tightness of the circuit.
In this article we will analyze in detail the main reasons why Atlant refrigerator does not turn off, and consider the algorithm of actions for diagnostics. Understanding the operating principles of thermostat and the refrigerant circulation system will help you make the right repair decision. In some cases, the problem can be solved independently, without resorting to expensive service.
Incorrect installation and violation of the temperature regime
One of the most common reasons why compressor does not go into standby mode, it is a simple overload or incorrect setting. If you have just loaded a large amount of warm food into the chamber, the system takes time to cool the volume to the set values. During this period, the motor wears out, trying to compensate for the heat.
It is also worth paying attention to the position of the temperature regulator. In models Atlant with mechanical control, the scale can be set to maximum cooling (usually number 6 or 7). In this mode, the unit physically cannot reach the required temperature and will operate continuously, especially in the hot season.
It is important to take into account external factors. If the refrigerator is standing close to the wall, next to the heating radiator or in direct sunlight, heat exchange is disrupted. Condenser do not have time to cool down, and the efficiency of the entire system decreases.
- 🌡️ Check whether the temperature control is set to "Maximum" or "Super Freeze".
- 🚪 Make sure that the door closes tightly and the seal is not damaged.
- ☀️ Assess the distance to walls and heat sources - it should be at least 10 cm.
⚠️ Attention: If you turned on the "Super Freeze" mode, do not forget to turn it off after 24 hours, otherwise the compressor will burn out from overload.
Normalizing operating conditions often solves the problem without interfering with the design of the device. Give the equipment time to get into operating mode after loading the products.
Malfunctions of the thermostat and temperature sensors
If external factors are excluded, you should pay attention to thermostat. This element is responsible for supplying voltage to the compressor. Older models Atlant use a mechanical thermostat with a capillary tube. Over time, its contacts can “stick” in the closed position, due to which the motor receives power constantly, ignoring the temperature in the chamber.
In modern models with a system No Frost or electronic control, air controls are responsible for temperature control sensors. If such a sensor fails or gives incorrect readings (for example, it tells the controller that the chamber is +10°C, although it is already -5°C), the system will try to cool the chamber indefinitely.
Thermostat diagnostics require caution. To check a mechanical regulator, it is often excluded from the circuit by closing the contacts directly, but this should only be done when the device is disconnected from the network. Electronic sensors are checked with a multimeter for changes in resistance when the temperature changes.
Symptoms of a malfunctioning thermostat are often accompanied by the absence of a characteristic click when trying to adjust. If you turn the knob and there is no switching sound, most likely the mechanism is jammed.
How to check a mechanical thermostat without tools?
Unplug the refrigerator. Remove the regulator knob and get to the thermostat housing. Gently tap it with the handle of the screwdriver. If, after being connected to the network, the compressor started working or, conversely, stopped humming (if it was in a cycle), it means that the contacts were stuck and mechanical action freed them. This is a temporary solution that requires replacement of the part.
Problems with refrigerant and system tightness
The most unpleasant reason for continuous operation is leakage freon. The refrigerant circulates in a closed circuit, taking heat from the chambers and releasing it into the environment. If a microcrack appears in the system, the gas gradually evaporates. The pressure drops, and the compressor, trying to maintain the temperature, works without stopping.
Unlike previous cases, if there is a leak, you will notice that the cold in the chambers is either completely absent or weak, despite the hot motor. In two-compressor models Atlant the problem may affect only one circuit.
Another option is a clogged capillary tube. An ice or mud plug forms in the circulation system, blocking the freon flow. The compressor tries to push the refrigerant, hums, but there is no circulation and no cooling occurs.
| Symptom | Probable cause | Action |
|---|---|---|
| Motor is hot, no cold | Freon leak | Call a technician to find the leak and refill |
| The compressor hums, but is silent | Clogged system | Purge the system and replace filter-drier |
| The motor works, but does not heat up at the back | Compressor malfunction | Replacing the compressor |
⚠️ Attention: Self-filling the refrigerator with freon is prohibited and dangerous. Special equipment and skills in working with vacuum pumps are required.
Wear of the compressor and start relay
The refrigerator motor is the heart of the system. Over time, the resource motor is exhausted. The piston group wears out, compression drops, and the unit simply cannot create the necessary pressure for efficient operation. As a result, it hums 24/7, but does not cool.
A frequent cause is also a malfunction starting relay. This small element is responsible for starting the engine. If the relay is “stuck” or its contacts are burnt, it can constantly supply current to the windings, preventing the compressor from going into rest.
You can diagnose a compressor breakdown by sound and temperature. A serviceable motor runs rhythmically, with pauses. A faulty one may make a metallic clang, hum softer or louder than usual, and also heat up excessively in a short time.
- 🔊 Listen: there are no extraneous knocks or metallic clanging during operation.
- 🔥 Touch the motor housing (be careful, it may be hot) - it is not should be hot.
- ⚡ Check the starting relay: remove it and shake it. If a ringing sound is heard inside, the part has fallen apart.
Replacing a compressor is a complex process that requires soldering tubes and evacuating the system. This is work for licensed professionals.
☑️ Compressor diagnostics
The influence of the No Frost system and fans
In models Atlant with the system No Frost another element is added - a fan that drives cold air through the chambers. If this fan is broken or its impeller is jammed with ice, the temperature sensor (which is usually located in the evaporator area) does not receive cold air and does not record a decrease in temperature.
As a result, the controller “thinks” that it is warm in the refrigerator and instructs the compressor to continue working. In this case, the evaporator itself may be covered with a thick coat of ice, blocking heat exchange.
Often the problem is solved by completely defrosting the refrigerator within 24 hours. This allows the ice to melt and free the ducts and fan. If after defrosting the problem returns after a week or two, it means that the The defrost heating element or the timer is faulty.
⚠️ Attention: Do not try to peel off the ice with a knife or sharp objects - this is guaranteed to lead to breakdown of the evaporator and leakage freon.
When an urgent call to a technician is necessary
There are a number of signs indicating that independent repair is impossible or dangerous. If you observe these symptoms, use of the device should be stopped until a specialist arrives.
First of all, there is a smell of burning or scorched wiring. It can come from an overheating motor, melting insulation, or a burnt-out relay. Also an alarming signal is strong vibration, accompanied by the refrigerator moving from its place.
If, after defrosting and checking the settings, the refrigerator Atlant continues to work non-stop for more than 12 hours without producing cold, further operation will lead to the final failure of the compressor.
Is it possible to operate a refrigerator if it does not turn off?
Short-term - yes, but this will lead to rapid wear of the compressor and an increase in electricity bills. Long-term operation without stopping (more than a day) without reaching the temperature indicates a serious malfunction that needs to be eliminated.
How much does it cost to replace a thermostat in an Atlant refrigerator?
The cost consists of the price of the part (usually from 500 to 1500 rubles) and the work of the technician. On average, repairs will cost 2000-3500 rubles, depending on the region and model.
Why is the refrigerator humming but not cooling?
This is a classic sign of a freon leak or compressor failure. The motor runs idle, since there is no pressure or circulation of refrigerant in the system.
How often should the refrigerator turn off?
In normal mode, the operating cycle is approximately 15-20 minutes of work and 30-40 minutes of rest. The ratio may change depending on the load and temperature in the room, but pauses must be required.