The sudden appearance of extraneous sounds in the operation of household appliances is always alarming, especially when it comes to a refrigerator Atlantwhich should work quietly and stably. The situation when the unit makes loud clicking noises can range from harmless sounds of the thermostat to signs of serious compressor failure that requires immediate attention. Understanding the nature of these sounds will allow you to save time and money by correctly diagnosing the problem at an early stage.
Most often, users encounter cyclic clicks, accompanied by an attempt to start the engine, which immediately stalls, or single sounds when turning the light on and off. Critically important do not ignore these signals, since Ignoring the problem can lead to failure of an expensive compressor. In this article, we will analyze in detail all possible causes, from simple to complex, and provide an algorithm of actions for each case.
Before proceeding with the diagnosis, it is necessary to clearly determine the nature of the sound: is it a single crack, a series of quick clicks or a dull knock? The further repair strategy depends on this. Many faults related to the electrical part can be fixed independently, having a minimum set of tools, while problems with the mechanics of the compressor will require calling a technician.
Sound diagnostics: normal or pathology?
Not every sound made by the refrigerator Atlantis a sign of a breakdown. The design of modern and even older models provides for various operating noises that can frighten an inexperienced user. For example, when the No Frost system is operating or when the evaporator is defrosting, clicks of the thermostat or deformation of the plastic elements of the case may occur due to temperature changes.
However, if refrigerator clicks at the same time it does not cool, or the clicks are accompanied by a buzzing sound that ends abruptly, this is a clear sign of a malfunction. A quiet, barely audible click every 20-40 minutes, corresponding to the cycle of turning the compressor on and off, is considered normal. Any series of frequent clicks, reminiscent of the operation of a telegraph key, requires an immediate check of the electrical circuit.
It is important to distinguish between the sounds made by the compressor itself and the sounds emanating from other components. The sound may be caused by vibration of the tubes that touch the housing, or improper installation of the unit. Before disassembling the equipment, make sure that the refrigerator is level and the gap to the walls meets the requirements of the instructions.
⚠️ Attention: If clicking sounds are accompanied by a burning smell or smoke, immediately unplug the refrigerator. Operation of such a device can lead to a fire or complete combustion of the motor-compressor.
Diagnostics should begin with visual inspection and listening. Place your hand on the body: if you feel a strong vibration or jerk at the moment of clicking, the problem most likely lies in the trigger mechanism. If the sound is dry and metallic, it may be the thermostat or shutdown relay.
Problems with the compressor starting relay
The most common reason why Atlant refrigerator clicks does not start is a faulty starting relay. This small element is responsible for supplying voltage to the starting winding of the engine at the moment of start. If the relay fails, the compressor receives an impulse, but cannot turn over, emitting a characteristic loud click and stopping.
Models Atlant often use relays of the RT, R-1, R-2 series or more modern posistor analogues. Over time, the contacts inside the relay oxidize or burn, and the spring mechanism loses its elasticity. This causes the circuit to not close properly. Visually, traces of soot or plastic melting may be visible on the relay.
Replacing the start relay is one of the simplest procedures in repairing refrigerators. It does not require any special equipment other than a screwdriver and possibly a multimeter for testing. The main thing is to choose the right analogue, since relays for different compressor models may differ in response current and mounting design.
How to remove the starting relay?
To remove the relay, you need to disconnect the refrigerator from the network, remove the rear protective cover at the bottom of the unit. The relay is placed on the compressor rod and secured with a strip or clamps. Carefully disconnect the wires (after photographing their location) and remove the relay. The new device is installed in the reverse order, strictly observing the orientation (usually the UP arrow should face up).
When choosing a new spare part, pay attention to the markings. For compressors Atlant relays marked 17.1 or RTK-Nare often suitable. Installing an unsuitable relay can lead to repeated breakdown or even burning of the motor windings, so consultation with the compatibility catalog is required.
- 🔌 Symptoms: Loud click, no start, buzzing lasts 1-2 seconds.
- 🛠️ Solution: Replacing the start relay with a compatible analogue.
- 📉 Risk: If you work for a long time with a faulty relay, the compressor may overheat and wedge.
- 💰 Cost: A relatively inexpensive part, available in most spare parts stores.
Malfunction of the piezorelay (PTC relay)
In more modern models of refrigerators Atlant, as well as in some modifications with inverter or energy-efficient compressors, instead of a classic electromagnetic relay, a posistor-based start-up protection device (PTC) is used. The principle of its operation is based on a change in the resistance of the heating element, which can also be accompanied by clicks when the thermal protection is triggered.
If the posistor is “broken” or has an unstable resistance, it may not provide the necessary impulse to start. In this case, refrigerator motor tries to start, the current increases sharply, and the protection is triggered, opening the circuit with a characteristic sound. The cycle can be repeated endlessly until the device cools down or is disconnected from the network.
Diagnostics of the piezoelectric relay is carried out by measuring its resistance in a cold state. It must be in a certain range (usually several tens of ohms). If the resistance is zero or infinity, the part must be replaced. It is also worth checking the condition of the contacts suitable for the relay for oxidation.
| Relay type | Principle of operation | Characteristic sound | Frequency of breakdowns |
|---|---|---|---|
| Electromagnetic (RTK) | Closing contacts with a magnet | Loud metallic click | High (mechanical wear) |
| Piezo (PTC) | Change in resistance when heated | Quiet crackling or click of protection | Medium (crystal degradation) |
| Electronic | Chip control | Barely audible click or silent | Low (rare in old Atlanta) |
It is important to note that in some systems the piezoelectric relay is paired with a protective device that can operate independently of the trigger mechanism. If you replaced the starter, but the problem remains, check the integrity of the protection circuit.
Malfunctions of the thermostat and sensors
The thermostat (thermostat) is a device that controls the temperature in the refrigerator chambers and sends a signal to turn the compressor on or off. Mechanical thermostats, which are installed in most models Atlant, have movable contacts. When triggered, they make a distinct click. If this sound becomes too loud, frequent, or is accompanied by sparking (a cracking sound is heard), it means that the contacts are worn out.
In electronic models, sensors are responsible for the temperature. If the sensor transmits incorrect data, the control board may randomly turn the compressor on and off, which will be perceived as a series of clicks. Malfunction of the thermostat often leads not only to noise, but also to a violation of the temperature regime: food may defrost or, conversely, freeze.
To check a mechanical thermostat, you can temporarily close its contacts (observing safety precautions!). If, when shorted, the refrigerator starts and works normally, then the problem is in the regulator. However, remember that this is only a temporary diagnostic measure, since without a thermostat the refrigerator will operate continuously, which will lead to freezing.
Replacing the thermostat requires care, especially when working with a capillary tube. It must not be bent or damaged, otherwise the refrigerant will escape and repair will become uneconomical. In models with a defrost button, it is this that often fails, producing a cracking sound when the bimetallic plate heats up.
⚠️ Attention: When replacing the thermostat, make sure that the capillary tube of the new sensor does not touch the hot parts of the compressor or electrical wires. This may lead to false temperature readings.
☑️ Checking the thermostat
Problems with the compressor: when you need a technician
The most alarming scenario is when clicks come directly from motor-compressor. If, when trying to start, a heavy, dull thud is heard, followed by a click of the protection relay, this may indicate an inter-turn short circuit of the windings or a mechanical jamming of the piston group. In this state, the compressor consumes a huge current, and the protection relay emergency breaks the circuit.
Another reason for heavy sounds can be a loose internal suspension of the compressor. The springs on which the motor is suspended inside the casing lose their properties over time or burst. As a result, during operation, strong vibration and knocking of metal parts against the walls of the casing occurs. This does not always require replacing the compressor; sometimes it is enough to replace the springs, but this is a complex procedure.
If you observe that the refrigerator Atlant clicks, hums for a couple of seconds and turns off, and at the same time the compressor housing remains cold (or, conversely, instantly heats up), most likely the engine is “stuck”. Attempts to start it using special devices (for example, by increasing the voltage) at home are dangerous and often lead to final breakdown.
The table below shows signs that can be used to distinguish a relay problem from a problem with the motor itself:
| Symptom | Problem with the relay | Problem with the compressor |
|---|---|---|
| Sound at startup | Clear click, then silence | Humming turning into a click |
| Case temperature | The compressor is cold | The compressor is very hot |
| Reaction to replacing the relay | The refrigerator starts | Symptoms repeat |
| Current consumption | Normal | Overestimated (protection triggered) |
External factors and installation errors
Sometimes the reason for clicks lies not in the internal components at all, but in improper operation or installation. If the refrigerator Atlant is not level, vibration from the operating compressor is transmitted to the body and floor, causing rattling and knocking, which can be mistaken for a breakdown. Check the adjustment supports and use a building level.
Objects located on the lid of the refrigerator or in the immediate vicinity of it can also become a source of sound. Vibration can be transmitted to nearby bottles, dishes or kitchen elements. Make sure that the rear grille of the condenser does not touch the wall, and the tubes inside the cabinet do not touch each other.
Another factor is power surges. If your network voltage is unstable, the protection relay may constantly trip, making clicking noises. In this case, refrigerator malfunction is secondary, and solving the problem requires installing a voltage stabilizer.
Algorithm for self-repair
If you decide to fix the problem yourself, proceed strictly according to the instructions. Safety comes first. Start by unplugging the device from the power outlet. Never carry out live work, even if you think you know where the safety contacts are.
Remove the back panel at the bottom of the refrigerator to gain access to the compressor. Visually assess the condition of the start relay and wires. If there are traces of burning on the relay, it needs to be replaced. To remove, carefully bend the clamps or unscrew the fastening bar.
When installing a new part, make sure that it fits tightly and the contacts are securely fixed. After assembly, do not rush to close the panel. Turn on the refrigerator and listen. If the clicking has stopped and the compressor is running smoothly, the repair can be considered successful. If the problem persists, the cause is probably deeper, and professional diagnostics are required.
Is it possible to operate the refrigerator if it clicks, but freezes?
Short-term operation is possible if the clicks are rare (only when turning on/off) and the cooling is not impaired. However, if the clicks are frequent, this indicates wear on the relay, which at any moment can completely burn out, leaving you without a refrigerator. It is better to replace the part in advance.
Why does the refrigerator click immediately after defrosting?
After defrosting, excess moisture may remain in the chamber, which gets onto the electrical contacts, causing a short circuit or cracking. Thermal expansion of materials is also possible. Allow the refrigerator to dry completely and warm up in the off state for 2-3 hours before turning it on.
How much does it cost to replace the start relay in the service?
The cost consists of the price of the part (usually 500-1500 rubles) and the work of the technician (1000-2000 rubles). Replacing yourself allows you to save on work, since the process takes no more than 15-20 minutes.
Is it dangerous to ignore clicks?
Yes, it is dangerous. Constant attempts to start a faulty compressor lead to overheating of the windings, destruction of insulation and, ultimately, to expensive repairs or replacement of the entire unit. In addition, there is a risk of a fire if there is a short circuit in the relay.