The situation when your Atlant refrigerator suddenly stops cooling and the compressor is silent can take you by surprise. The inner chamber heats up, the food begins to deteriorate, and panic arises: call a specialist or try to figure it out yourself? Often the reason lies not in the breakdown of the motor itself, but in a chain of related elements that are easy to diagnose.
In this article we will take a detailed look at the mechanics of operation single-compressor and two-compressor models so that you can understand the logic of the malfunction. We will not delve into complex electronics unnecessarily, but will focus on typical scenarios faced by owners of equipment from this brand. Understanding the principles of operation will help you save time and, possibly, money on calling a specialist.
It is immediately worth noting that modern models with No Frost system have a more complex design than simple drip units. However, the basic diagnostic principles remain the same: we check the power supply, thermoregulation and starting equipment. If you hear a hum, clicks or complete silence, these are different signals that require a unique approach.
Before disassembling the unit, make sure that the problem is not a simple lack of electricity in the outlet. Check if the light inside the chamber lights up when the door is opened. If there is no light, check the power cord and plug. If there is light, but the motor does not start, it means that the circuit is broken inside or the protection has tripped.
Main symptoms of compressor failure
The first step in diagnosis is the correct interpretation of what you see and hear. Compressor This is the heart of the refrigerator, and its failure is always accompanied by certain signs. Depending on the model Atlant, symptoms can vary from complete silence to loud clicks.
One of the most common scenarios is the so-called “heat stroke”. The engine tries to start, makes a short humming sound, then a click is heard, and there is silence. After some time, the cycle repeats. This is a classic sign that starting relay or the motor itself cannot overcome the resistance.
⚠️ Attention: If you smell burning or see melted plastic in the motor area, immediately unplug the device. Further attempts to turn it on may lead to a fire.
Another option is that the compressor does not make any sounds at all, although the light in the refrigerator is on. This indicates that the electric current simply does not reach the motor windings. In such cases, the wiring is often to blame. It is also worth paying attention to the temperature of the motor housing: if it is hot, but does not work, the thermal protection may have tripped. thermostat or wiring. It is also worth paying attention to the temperature of the motor housing: if it is hot, but does not work, the thermal protection may have tripped.
Problems with the starting relay and protection
The most common reason for failure to start in refrigerators Atlant is failure of the start-protection relay. This small element is responsible for supplying an impulse to the starting winding of the motor. If it burns out or sticks, the motor does not receive the necessary push to start rotating the rotor.
Old models use relays with an inductor, while new ones use solid-state (posistor) relays. Solid-state elements are considered more reliable, but they also tend to break, especially during power surges in the network. Replacing this part is one of the simplest procedures in refrigerator repair.
To check the relay, it must be removed from the compressor. Visually inspect the housing for cracks or burn marks. If everything is intact on the outside, you can gently shake the part: if it rattles inside, it means the mechanism is destroyed and requires replacement. Such elements are inexpensive and are sold in spare parts stores.
It is also worth checking the contacts suitable for the relay. They could oxidize or burn out. Cleaning the contacts with fine sandpaper sometimes brings the device back to life without replacing parts. However, if the contacts are blackened, it is better to replace the entire assembly.
Malfunction of the thermostat or temperature sensor
The thermostat (or thermostat) is the “brain” that decides when to turn on the compressor. If it is faulty, it simply does not give the command to start, even if it is warm in the chamber. In refrigerators Atlant with electronic control, this function is performed by temperature sensorwhich transmits data to the control module.
You can determine the breakdown of a mechanical thermostat by closing its contacts directly. If after this procedure the compressor starts working, then the problem is in the regulator. In models with electronics, diagnostics are more complicated and require a multimeter to check the resistance of the sensor.
Often owners are faced with a situation where the thermostat knob is at maximum, but there is no cold. This may mean that the capillary tube of the thermostat has lost its seal and the freon inside it has evaporated. In this case, the sensor “thinks” that it is already cold in the chamber and does not turn on the motor.
How to temporarily start a refrigerator without a thermostat?
You can short-circuit the wires coming from the thermostat with twisting or electrical tape. This will force the compressor to run constantly. Use this method only to save products before the technician arrives, since operation without temperature control is dangerous for the motor.
If only one chamber does not work, the problem can be localized precisely in the corresponding sensor.
Refrigerant leak and running “dry”
One of the most unpleasant reasons why the compressor does not start, there is a leak freon. The refrigerant circulates through the system, picking up heat. If its quantity is critically low, the pressure in the system drops and the motor cannot start or operates with overload.
Leakage symptoms often appear gradually. First, the refrigerator begins to freeze worse, then the compressor begins to work longer, trying to gain temperature. As a result, it either overheats and is switched off by the protection, or stops starting altogether. In this case, the lower sections of the rear radiator grille may be cold.
It is strictly forbidden to start the compressor in the absence of freon. In such units, motor lubrication depends on the circulation of refrigerant and oil. Dry operation leads to rapid wear of the piston group and the engine wedge, after which repairs become economically unfeasible.
⚠️ Attention: A freon leak is often accompanied by oily spots on the floor under the refrigerator or at the junction of the pipes. Carefully inspect the lower part of the unit.
To eliminate a leak, you need to call a technician with equipment to find the location of the damage, solder the tubes and fill the system with new gas. It is impossible to do this work independently without a vacuum pump and pressure gauges.
Interturn short circuit of the motor windings
The most serious diagnosis is turn-to-turn short circuit in the windings of the electric motor. This occurs when the insulation of the wires inside the motor breaks down and current begins to flow through a short path. As a result, the compressor hums, gets very hot, but does not start, knocking out the circuit breakers in the apartment.
You can check the windings using an ohmmeter. Normal resistance values for different windings (starting and operating) are indicated in the technical data sheets. If the device shows zero or infinity, or the resistance is very different from the norm, the motor has burned out.
Often the cause of a short circuit is prolonged operation in abnormal mode, for example, due to a dirty capacitor or frequent power surges. Modern refrigerators Atlant have reliable motors, but they do not last forever.
If you heard a loud bang and smelled burning insulation, most likely a breakdown has already occurred. In this case, further attempts to turn on are useless and dangerous.
Comparison of faults: diagnostic table
To systematize knowledge and quickly understand what happened to your unit, use the following table. It will help you weed out unnecessary options and focus on the main thing.
| Symptom | Probable cause | Difficulty of repair | Necessary actions |
|---|---|---|---|
| Clicks, but does not starts | Start relay or jammed compressor | Low / High | Replace the relay or check the compressor |
| Complete silence, light is on | Thermostat or open circuit | Medium | Checking contacts and temperature sensor |
| Buzzes and turns off | Freon leak or motor wedge | High | Call a technician to find a leak |
| Knocks out plugs in the house | Breakage to the housing or short circuit in the winding | Critical | Urgent electrical diagnostics |
This table covers about 90% of all cases of non-working refrigerators. However, there is always the possibility of rare malfunctions, such as a breakdown of the control module in electronic models.
In models with inverter compressor diagnosis is even more difficult, since the start-up occurs smoothly, without a characteristic click of the relay. This often requires replacing the entire control unit.
Algorithm of actions when a breakdown is detected
If you encounter a problem, do not rush to disassemble the unit with wrenches. First perform a basic check that does not require tools. This will help avoid unnecessary expenses and unnecessary movements.
☑️ Primary diagnostics of the refrigerator
First of all, move the refrigerator away from the wall and provide access to the back. Let the unit stand turned off for at least 2-3 hours. Sometimes the thermal protection relay simply did not have time to cool down and reset the fault condition.
After cooling, turn on the device to the mains. If after 10-15 seconds the characteristic click and start does not occur, and the motor is silent or humming, proceed to a more in-depth diagnosis. If you do not have experience working with electrical appliances, it is better to stop at this stage.
⚠️ Attention: Before any work inside the refrigerator, be sure to disconnect it from the power supply. Working under voltage is deadly.
If you decide to repair it yourself, prepare a multimeter, screwdrivers and, possibly, a new starting relay. Always check the integrity of the insulation of the wires before connecting.
Prevention and extension of service life
To prevent the question “why the compressor does not start” from arising before you every couple of years, it is important to follow the operating rules. Atlant Refrigerators are known for their reliability, but they do not like extremes.
First of all, make sure the condenser (grid at the back) is clean. Dust and animal hair create a “fur coat” that interferes with heat transfer. The motor is forced to work longer and more intensely, which reduces its service life. Cleaning with a vacuum cleaner or a soft brush every six months will work wonders.
Proper placement of the unit is also critical. Do not place the refrigerator close to a wall or furniture. A gap of 5-10 cm is necessary for free air circulation. Overheating is the main enemy of electric motors.
The influence of voltage surges
Voltage surges in the network are a common cause of failure of starting equipment. It is recommended to use a voltage stabilizer or surge protector to protect equipment.
Do not overload the freezer with warm foods. A sharp jump in temperature forces the compressor to work at its limit, which can lead to its overheating and subsequent failure to start.
Frequently asked questions (FAQ)
Is it possible to repair a burnt-out compressor yourself?
Theoretically, you can rewind the windings, but in practice this requires special equipment and skills. The cost of labor and materials often exceeds the price of a new compressor. It is easier and more reliable to replace the entire unit or buy a new refrigerator.
How long does the compressor in an Atlant refrigerator last on average?
With proper operation and stable voltage in the network, the service life of the compressor is 10-15 years or more. However, the starting equipment (relay) may require replacement every 5-7 years.
Why does the refrigerator turn on for 5 seconds and turn off?
This is a thermal protection relay. It detects an overload (due to a jammed motor, lack of freon or a bad relay) and breaks the circuit to prevent a fire. You need to look for the cause of the overload.
Does tilting the refrigerator during transportation affect startup?
Yes, if the refrigerator was transported lying down, the oil needs time (from 2 to 24 hours) to drain back into the compressor. Turning on earlier than this time can lead to water hammer and damage to the valves.