Situation when The refrigerator Atlant starts to turn on too often does not always mean a catastrophic failure, but this symptom cannot be ignored. An increase in the frequency of compressor operating cycles is a direct signal that the unit cannot reach or maintain the set temperature in normal mode. Owners often notice that the engine hums every 5-10 minutes, working in short bursts, or, conversely, does not turn off at all, trying to compensate for the loss of cold. Overheating engine in this mode, it is only a matter of time, which can lead to expensive repairs or a complete replacement of the unit.
Modern models of the Belarusian brand, like their mechanically controlled predecessors, are subject to similar problems associated with wear of seals, clogging of the capillary tube or failure of electronics. Understanding the nature of the occurrence of short cycles (the so-called “clocking”) will help you save money on calling a technician for simple diagnostics. However, it is worth remembering that independent intervention in the refrigerant circulation system requires professional equipment and knowledge.
In this article we will analyze in detail the main reasons for frequent switching on, methods for identifying them at home, and situations where you cannot do without calling a specialist. It is important to distinguish normal operation under high load from pathological conditions of the system.
Violation of the chamber seal and wear of the seal
The most common and easily eliminated reason that the refrigerator Atlant often turns on is a violation of the door seal. If warm air from the room constantly penetrates into the chamber, the thermostat detects the increase in temperature and gives the command to start the compressor. Visually this may not be noticeable, but even a microscopic gap leads to constant heat transfer. This happens especially often in models with a system No Frost, where impaired air circulation aggravates the problem.
The rubber seal (cuff) loses elasticity over time, cracks or deforms. Also, grease and dirt can adhere to its surface, which prevents the door from fitting tightly to the body. If the refrigerator is not level, the door may not close on its own, leaving a gap of several millimeters. This forces the motor to work harder, trying to cool the constantly incoming warm air.
⚠️ Attention: If you notice that the rubber seal is swollen or cracked, do not try to glue it with household glue. This is a temporary solution that will disrupt the fit geometry. The seal must be replaced with an original or high-quality analogue.
To check the tightness, there is a simple and effective method using a sheet of paper. You need to clamp the sheet between the door and the body around the entire perimeter. If the paper is pulled out easily and without resistance, the seal has been broken in this area. You can also use a flashlight: turn it on, place it inside the camera and close the door tightly in a dark room. The light breaking through will indicate places of cold leakage.
- 🔍 Check whether anything is preventing the door from closing tightly (protruding food, dishes).
- 🧼 Wash the seal thoroughly with warm water and soapy water, removing the grease film.
- 🔥 Try to gently warm the deformed areas of the seal with a hairdryer (without overheating!) to return it to shape.
Malfunctions of the thermostat and temperature sensors
The thermostat (thermostat) is the “brain” that decides to turn the compressor on and off based on the temperature in the chamber. If this device fails, it may provide incorrect readings. For example, the sensor may “think” that the refrigerator has become too warm, although in fact the temperature is normal. As a result, compressor starts, runs for several minutes, cools the air, and the cycle is repeated again and again.
In models Atlant with electronic control, air sensors are responsible for temperature control. Their breakdown or displacement from their normal place leads to incorrect operation of the entire system. Mechanical thermostats (with a knob inside the chamber) often suffer from oxidation of the contacts or loss of sensitivity of the bellows. The capillary tube of the thermostat may be pinched or displaced, which distorts the read data.
How to check the thermostat with a multimeter
To check the mechanical thermostat, you need to remove it, disconnect the wires and ring the contacts in the "on" position. If the device shows a break, the thermostat is faulty. You can also short-circuit the wires directly: if the refrigerator runs continuously, the problem is most likely in the sensor.
Diagnosing this problem requires caution. If you hear a characteristic click of the thermostat, but the compressor does not start (or starts and immediately stalls), the problem may lie in the control circuit. Replacing a thermostat is not the most complicated procedure, but it requires precise selection of the model, since the temperature response ranges for different modifications Atlant may differ.
| Symptom | Possible cause | Check method |
|---|---|---|
| The refrigerator turns on for 1-2 minutes | Thermostat is faulty | Contact dialing |
| The motor hums, but does not start | Starting relay or thermostat | Measurement of winding resistance |
| Temperature does not hold | Sensor is displaced or freon leak | Visual inspection and pressure gauge |
| Sparking inside the control unit | Burning of thermostat contacts | Visual inspection of contacts |
Problems with the start relay and compressor
If the refrigerator Atlant turns on, it buzzes for 5-10 seconds, and then there is a click and it turns off - This is a classic sign of a faulty start relay or compressor itself. The starting relay is responsible for supplying voltage to the starting winding of the engine. If it breaks down, the motor cannot reach operating mode and the protection (thermal relay) emergency turns off the power to prevent the windings from burning out.
Frequent repetition of such cycles (on-click-off) is extremely dangerous for the compressor. The engine does not have time to cool down, the oil does not circulate normally, which leads to jamming of the piston group. In some cases, the cause is a drop in voltage in the network or wear of the windings of the electric motor itself, when it simply cannot develop the required force to start.
Replacing the start relay is one of the most common repair operations. It is inexpensive and can be changed in 15-20 minutes. However, if the situation has not changed after replacing the relay, there is a high probability of an interturn short circuit in the compressor windings. In this case, the engine will consume increased current, which also causes frequent protection operations.
- 🔌 Check the voltage in the socket - low voltage prevents normal engine starting.
- 🔨 Gently tap the handle of a screwdriver on the relay body (sometimes the contacts stick).
- 🌡️ Allow the compressor to cool completely (2-3 hours) before trying to turn it on again.
Freon leakage and clogged capillary tube
When a leak occurs in the refrigerant circulation system, the amount of freon decreases. The compressor tries to compensate for the lack of refrigerant by working longer and more often. However, if the leak is significant, the refrigerator may turn on frequently but not cool. The sensors record that the temperature does not drop and do not give a command to stop the motor, or the protection system turns it off due to overheating.
Clogging the capillary tube (usually with moisture or oxidation products) creates a similar effect. Freon cannot circulate freely throughout the circuit; the pressure at the outlet of the compressor increases and at the inlet decreases. This causes the refrigerator to operate jerkily. In models Atlant with one compressor, this is often accompanied by swelling of the rear wall inside the chamber or, conversely, a complete absence of frost on the evaporator.
⚠️ Attention: Try to find the freon leak or clean it yourself