Stable operation of household refrigeration equipment directly depends on the correct cycles of turning on and off the compressor. For owners of Belarusian brand equipment Atlant the question of the frequency of these processes often becomes an indicator of the health of the unit. Understanding the physics of motor operation allows you to notice deviations in a timely manner and prevent serious repairs.
Under ideal conditions refrigerator should not operate continuously, as this leads to overheating of the motor windings and rapid wear of mechanical components. Normal operation involves alternating phases of active cooling and rest, the duration of which depends on many factors, including the temperature in the room and the amount of food.
If you notice that your Atlant is behaving unusually - either humming without interruption, or clicking every few minutes - this is a signal for diagnostics. In this article we will analyze in detail what is considered normal, and when specialist intervention is required or thermostat adjustment.
Standard indicators of the compressor operating cycle
The standard operating cycle of a modern refrigerator is designed for certain time intervals that ensure energy efficiency and safety products. For most models Atlant with energy consumption class A and higher, the ratio of work and rest is approximately 1 to 2 or 1 to 3. This means that for 10-15 minutes of engine operation there should be 20-30 minutes of downtime.
However, these figures are not absolute constant. Shutdown time may vary depending on the load of the cameras. If you have just placed a large amount of room temperature food in the refrigerator, the compressor will run longer to compensate for the heat, and the pauses between starts will be shorter. This is an absolutely normal reaction of the system to the thermal load.
It is important to consider that different series of equipment may have differences in control algorithms. Old models with mechanical control keep the temperature less accurately, allowing wider fluctuations, while modern units with electronics tend to maintain the mode with a minimum error.
Factors influencing the frequency of switching on and off
There are a number of external and internal factors that can change the standard operating schedule of refrigeration equipment. Ignoring these conditions often leads to a false diagnosis of a malfunction, when the equipment is in working order, but operates under stress.
The main reasons for changing the frequency of cycles include:
- 🌡️ Ambient temperature: If the refrigerator Atlant is installed near the stove or in direct sun, it will turn on more often, since heat exchange with the external environment is difficult.
- 🚪 Circuit tightness: Worn door seal allows warm air to pass through, forcing the compressor to turn on more often to compensate for the loss of cold.
- ❄️ Ice formation: Thick layer of ice on the evaporator (in models with manual defrosting) impairs heat transfer, which disrupts normal operating intervals.
- 🥩 Loading cameras: An empty refrigerator cools down faster, but it also heats up more actively from the air when the door is opened than a densely packed one with products that act as a cold accumulator.
It is also worth paying attention to the temperature settings. If you set the regulator to maximum cooling (usually numbers 6 or 7, or mode Super Freeze), then interruptions in operation may be minimal or absent at all during the hot season.
Symptoms of malfunction: short cycle and continuous operation
There are two critical scenarios that require the immediate attention of the owner. The first is the so-called “short cycle”, when the refrigerator turns on, runs for 1-3 minutes, turns off and starts again almost immediately. The second scenario is the absence of shutdowns for several hours.
Frequent switching on, known as clocking, is extremely dangerous for the electric motor. At the moment of startup, the current in the compressor windings increases 5-7 times. If the motor does not have time to cool down and start the system in normal mode, this can lead to burnout of the start relay or jamming of the piston group.
⚠️ Attention: If you hear a characteristic click of the relay, after which the refrigerator hums for 5-10 seconds and clicks again, turning off, immediately disconnect the device from the network. This is a sign of a malfunction of the start-up relay or compressor.Continuous operation is also dangerous, but for different reasons. Constant load leads to overheating of the oil, loss of its lubricating properties and eventual failure of the compressor. In addition, this leads to excessive consumption of electricity and the formation of an ice coat, which will then have to be defrosted for a long time.
Diagnostics of the thermostat and temperature sensors
A frequent cause of cyclicity violations is not the compressor itself, but the control system - a thermostat or electronic sensors. They are the ones who give the command to turn on and off, focusing on the temperature inside the chambers.
If the thermostat is “stuck” in the “On” position or its sensitivity is impaired, the refrigerator will work without interruption until the emergency overheating protection is triggered. In models Atlant with mechanical control, the thermostat is often located inside the chamber or behind a plastic panel.
To check the mechanical thermostat, you can use the following method:
- Disconnect the refrigerator from the power supply.
- Remove thermostat (after removing the regulator knob).
- Dip the sensitive tube (capillary) into a container with cold water (about +5°C).
- Ring the contacts with a tester: they should be closed. When the tube is heated in heat, the contacts should open.
In modern models with a system No Frost or electronic control, air sensors are responsible for the temperature. Their malfunction often leads to the fact that the controller “does not see” the reached temperature and does not give a command to stop the engine.
Where is the thermostat located in Atlanta?
In most Atlant models, the thermostat is located inside the refrigeration chamber. Its plastic handle protrudes from the front panel or side wall. To access the electrical part, you need to remove the plastic cover, under which there are terminals and contacts.
The influence of the refrigerant and the state of the system on the cycles
The quantity and condition refrigerant (freon) in the system directly affects the operating time of the compressor. If a micro-leak has formed in the circuit and the amount of gas has decreased, the refrigerator will no longer reach the desired temperature.
As a result, the unit will work almost non-stop, trying to compensate for the lack of refrigerant. In this case, cooling will be weak or absent in one of the chambers (usually in the refrigerator, while the freezer may still freeze).
The other extreme is overcharging the system. If during repairs too much freon was pumped into the circuit, the pressure in the system increases, the compressor operates with overload, and the cycles become unnaturally short or, conversely, too long with high currents.
Symptom Possible cause Recommended action Works non-stop, there is cold The door is not closed tightly, the seal is worn out Check the fit, replace the tires Works non-stop, there is no cold Freon leak, capillary blockage Call a technician to find a leak On for 1 minute, off for 5 minutes Malfunction of the starting relay Replacing the starting relay Humming, but does not start The compressor is jammed or the winding is burned out Diagnostics of the motor-compressor ☑️ Primary diagnostics of the refrigerator
Done: 0 / 5Specifics of operation of Atlant models with No Frost and dual-circuit systems
Refrigerators Atlantequipped with the system No Frosthave a more complex operating algorithm. In them, compressor shutdown cycles can be associated not only with temperature, but also with the operation of the defrost timer and fans.
In such models, the compressor can turn off while the fan that distributes the cold is running, or vice versa. It is also worth considering that in two-compressor models (where one motor is for the freezer and the other for the refrigerator), the operating cycles of each unit are independent.
Users often confuse the operation of the second compressor with a malfunction of the first. For example, while the freezer is “resting,” the refrigerator may be actively working, and this is normal. In single-compressor models with two cooling circuits, a solenoid valve is responsible for the distribution of cold, a malfunction of which can also disrupt cycles.
⚠️ Attention: In models with electronic control, if there is a failure in the sensor circuit, the refrigerator may go into emergency mode, where the compressor operates constantly. An error code usually lights up on the display or the temperature indicator flashes.Frequently asked questions (FAQ)
Is it normal that the new Atlant refrigerator works almost without interruption on the first day?
Yes, this is absolutely normal. After first switching on, an empty unit requires time (from 6 to 24 hours) to cool the entire internal volume, plastic walls and shelves to the set temperature. During this period, the compressor can work continuously.
Why does the refrigerator turn off immediately after turning it on?
Most likely, the problem is in the compressor start relay or in the motor itself. The relay tries to start the engine, but due to a malfunction (jamming, interturn short circuit), the current increases sharply, and the protection opens the circuit. Relay replacement or diagnostics of the compressor is required.
How often should the refrigerator turn on in the summer when it is hot?
In the summer, when the temperature in the room exceeds +25°C, the operating time of the compressor increases and the downtime is reduced. Instead of the standard 30 minutes of rest, the refrigerator can rest for only 10-15 minutes. The main thing is that it still turns off.
Can incorrect installation cause frequent switching on?
Yes. If the refrigerator is close to the wall, the sun is shining on it or an oven is working nearby, the temperature sensor will record the rapid heating of the air inside the chamber after each opening of the door and turn on the motor more often.