The situation when your Atlant refrigerator begins to behave inappropriately, turns on for a few seconds and immediately goes silent, always causes panic. This is a classic symptom indicating that the unit cannot start compressor into normal operating mode. Instead of the hum of a running motor, you only hear a short click, followed by silence, and after a while the cycle repeats. This behavior of the equipment is not only annoying, but also creates a direct threat of food spoilage, since the temperature in the chambers begins to rise rapidly.
Such “flashing” of indicators or simply cyclic on-off indicates the activation of protective mechanisms or a malfunction of the starting elements. Most often, the problem lies in the electrical part: the start relay has burned out, the compressor piston has jammed, or the thermostat has failed. It is important not to ignore these signals, since prolonged operation in this mode can completely “kill” the motor-compressor, turning a simple repair into an expensive replacement of the unit.
In this article we will analyze in detail all the possible causes of refrigerator breakdowns Atlant, from simple power surges to complex mechanical defects. You will learn how to carry out initial diagnostics yourself and in which cases calling a specialist becomes the only solution. Understanding the nature of the malfunction will help you save time and money by avoiding unnecessary expenses on diagnosing obvious problems.
Main reasons for cyclic switching on and off
The first thing you need to understand: a refrigerator is a system where all elements are interconnected. If motor-compressor tries to start, but immediately stalls, it means that it encounters resistance or does not receive the necessary impulse. The most common reason in models Atlant is the failure of the start-up relay. This small black box, placed on the compressor contact, is responsible for supplying the starting impulse. If its insides have melted or the contacts have oxidized, the motor cannot overcome the initial resistance and stops.
The second serious reason is mechanical. compressor wedge. Inside the sealed motor housing there are rubbing parts that wear out or lose lubrication over time. If the piston is jammed, the armature of the electric motor is physically unable to turn. At this moment, the current in the windings increases sharply, the thermal relay detects the overload and emergency breaks the circuit to prevent a fire. It is this process that you hear as a click and subsequent shutdown.
Also, problems with thermostat or the electronic control module cannot be discounted. If the temperature sensor “lies” and reports that the chamber is already colder than it actually is, it will constantly give a command to stop. However, in the case of switching on and instantly switching off, it is often the starting circuit or the motor itself that is to blame. Power surges in the network can also lead to similar symptoms if a high-quality stabilizer is not installed in the refrigerator.
Diagnostics of the starting relay and electrical circuit
You should start troubleshooting with the most accessible unit - the starting relay. In refrigerators Atlant it is usually located in the lower rear part of the unit, near the compressor. To access it, you need to disconnect the device from the network, remove the back cover (case) and carefully disconnect the wires. A visual inspection can immediately give the answer: if traces of burning, melted plastic, or the smell of burnt insulation are visible inside the relay, the part must be replaced.
However, external integrity does not always guarantee serviceability. Inside the relay there is a coil and contacts, which over time may stick or, conversely, not close. You can check it with a multimeter by ringing the contacts for compliance with the circuit. If the relay is working properly, but the refrigerator still does not start, the problem may lie in the compressor windings themselves. Interturn short circuit is a serious malfunction in which the insulation of the copper wire inside the motor is broken.
☑️ Starter diagnostics relay
All manipulations are carried out only with the device completely disconnected from the outlet. If you are not confident in your skills in working with electrical appliances or you do not have a multimeter at hand, it is better not to take risks. Incorrect assembly or shorting can result in electric shock or damage to the refrigerator's electronics.
Mechanical faults compressor
When the electrical part is working properly, but the refrigerator Atlant still clicks and turns off, you will have to face an unpleasant reality - mechanical breakdown of the motor. Compressor wedge occurs due to the exhaustion of the life of rubbing parts, loss of properties of freon-oil or moisture entering the system. At this moment, the piston gets stuck in the cylinder, and the engine, trying to move it, consumes a huge current, which triggers the thermal protection relay.
There is a so-called “folk” method of resuscitating a jammed motor using a boost starting tablet, but in modern conditions this is an extremely risky step. A short start can help if the wedge is not strong, but more often than not this only finishes off the windings or leads to depressurization of the housing. If the compressor is jammed tightly, the only correct solution is to replace it with a new unit of the same power and refrigerant.
⚠️ Attention: Attempts to independently disassemble the sealed compressor housing or pour oil into it through a puncture are strictly prohibited. This breaks the tightness of the system, releases refrigerant into the atmosphere and makes further professional repairs economically unfeasible.
Another mechanical reason may be a malfunction of the valve group. If the reed valves are leaking or deformed, the compressor will not be able to produce the required pressure. It will run idle without pumping freon, but at the same time consume energy. Although in this case the refrigerator often works continuously, in some modes the automatic safety system can interpret the lack of pressure as an emergency and turn off the motor.
Problems with the thermostat and sensors
In older models Atlant a mechanical thermostat is responsible for the temperature, and in new ones - an electronic sensor (thermistor). If the thermostat is faulty, its contacts may not open in time, causing the compressor to work without stopping, or, conversely, open immediately after turning on. In the case of switching on and instantly switching off, a scenario is more common when the contacts are “stuck” in the break position, but due to vibration when the compressor starts, a short circuit occurs and then a break occurs.
Electronic control systems are more complex. If the temperature sensor gives incorrect readings (for example, due to oxidation of the contacts or an open circuit), the control module may block the start of the compressor, believing that the target temperature in the chamber has already been reached. It is also worth checking the wiring going to the sensor: a pinched or frayed cable may give a false signal.
| Malfunction | Symptom | Probability | Difficulty of repair |
|---|---|---|---|
| Start relay | Click, hum 2-3 sec, shutdown | High | Low |
| Compressor wedge | Humming, case heating, shutdown | Average | High (replacement) |
| Thermoregulator | Chaotic on/off | Average | Low |
| Winding break | Silence or humming without starting | Low | High (replacement) |
To check the thermostat in mechanical models, you can temporarily close its contacts (if the design allows and you are sure of safety). If after this procedure the compressor starts and operates normally, then the regulator needs to be changed. In electronic models, diagnostics are only possible by testing the resistance of the sensor with a multimeter at different temperatures.
The influence of voltage surges and wiring
Unstable voltage in the network is the scourge of many areas, and technology Atlant here is no exception. If the voltage drops below 190 Volts or jumps sharply, the starting current may be insufficient to start the rotor, or, conversely, excessive, which causes instantaneous operation of the protection. The refrigerator will try to start, hear “failure” and go into standby mode.
It is also worth checking the socket and plug of the refrigerator. Loose contacts in the socket create a high contact resistance, which leads to a voltage drop precisely at the moment the motor starts. The plug may become hot and the plastic around it may melt. This creates the effect of “not allowing” voltage to the compressor.
How to check the voltage without a voltmeter?
You can connect a powerful consumer (for example, a hair dryer or heater) to the same outlet and see if the light in the room dims and if the electronics of other devices are reset. If yes, there is a problem in the network.
The solution to the problem will be to install a voltage stabilizer or at least a voltage control relay, which will turn off the device in case of dangerous values in the network, preserving the compressor. The use of simple network filters (“pilots”) in this case is ineffective, since they do not equalize the voltage, but only protect against short circuits.
When you need to call a technician
Independent repair is only possible if you replace the start relay, thermostat or eliminate wiring problems. However, if the diagnostics showed that the system itself is faulty or the tightness of the system is broken (freon leakage), you cannot do without a specialist. To replace the motor you need: compressor or the tightness of the system is broken (freon leakage), you cannot do without a specialist. To replace the motor you need:
1. Pumping out old refrigerant.
2. Soldering a new compressor (you need a torch and soldering skills).
3. Evacuating the system (removing moisture and air).
4. Refilling with the exact amount of freon.
An attempt to “save” by calling a technician when there is a freon leak or replacing the motor often leads to the fact that the refrigerator stops freezing completely or fails after a month. Professional equipment for vacuuming and refilling is expensive, and it makes no sense to buy it for one time.
⚠️ Attention: If you hear hissing when the refrigerator is operating or see oily spots under it, under no circumstances turn on the device again. These are signs of a refrigerant and oil leak. Working “dry” will finish off the compressor in a matter of minutes.
Frequently asked questions (FAQ)
Is it possible to operate a refrigerator if it clicks but does not freeze?
Absolutely not. Constant attempts to start wear out the motor windings and can lead to fires in the wiring or permanent failure of the compressor. The food in the chambers will also deteriorate.
How much does it cost to replace the starting relay on Atlant?
The relay itself is inexpensive (usually in the range of 500-1500 rubles depending on the model), but if the work is performed by a master, the price consists of the cost of the part and the cost of the visit. Self-replacement is simple and requires only a screwdriver.
Why does the refrigerator turn on for 5 seconds and turn off?
This is the operating time of the thermal protection relay. It gives an impulse to start, sees that the current exceeds the norm (wedge or short circuit), and breaks the circuit to save the motor from combustion.
Is it possible to knock on the compressor if it is jammed?
Sometimes a light blow with the wooden handle of a hammer on the body of a working (trying to start) compressor can help to start piston But this is a temporary measure, and the probability of success is less than 30%.