The situation when Biryusa refrigerator makes a loud click and then goes silent or tries to start again is familiar to many owners of this equipment. This sound usually comes from the bottom of the unit, where the motor-compressor is located, and indicates an attempt to start the electric motor. In the best case, the device simply cannot overcome the starting torque; in the worst, this is a sign of a serious breakdown of the cooling system that requires immediate intervention.
The characteristic clicking sound is the operation of a thermal or starting relay, which opens the power circuit when overloaded. If you hear these sounds regularly, and the cold inside the chambers does not build up, you cannot ignore the problem. Long-term attempts to start without success can lead to burnout of the motor windings or failure of the compressor, which will significantly increase the cost of subsequent refrigerator repair In this article we will analyze in detail the mechanics of the process, explain why failures occur in the electrical circuit, and provide an algorithm of actions for diagnostics. You will learn in which cases you can handle it yourself by replacing inexpensive parts, and when it is better to call a specialist. Understanding the nature of sound will help you save time and money by avoiding the purchase of new equipment to replace repairable equipment..
In this article, we will analyze in detail the mechanics of the process, explain why failures occur in the electrical circuit, and provide an algorithm for diagnostics. You will learn in which cases you can handle it yourself by replacing inexpensive parts, and when it is better to call a specialist. Understanding the nature of sound will help you save time and money by avoiding the purchase of new equipment to replace repairable equipment.
The mechanism for the occurrence of clicks in the starting system
To understand the nature of the sound, it is necessary to consider the design of the starting unit. In refrigerators Biryusa, especially older models, the starting relay is responsible for starting the engine. When the power is turned on, a high starting current passes through the stator winding, which heats a special tablet or raises the electromagnet core. It is this mechanical process that is often accompanied by a sound similar to a click.
If the compressor is working properly, it starts, the current drops to operating values, and the relay switches to operating mode. However, if the motor is seized or the mains voltage is insufficient, the relay opens the circuit to protect the windings from overheating. This repeated click means an emergency shutdown. The cycle can be repeated every few minutes until the thermostat again gives the command to start.
It is important to distinguish between a normal operating sound and an emergency one. Quiet periodic clicks when the unit is turned off and on in normal mode is the norm. But a series of quick clicks, a hum that turns into silence, or a loud knock followed by the motor stopping are signs of a malfunction start relay or the compressor itself.
⚠️ Attention: If you smell a burning smell or see melted wires in the compressor area, immediately unplug the refrigerator. Further attempts to turn on may lead to a short circuit or fire of the wiring.
Modern models can be equipped with inverter compressors, where the starting currents are smoothed out by electronics, but even there clicks are possible when the protective mechanisms of the control board are triggered. However, classic linear motors installed in most models Biryusa, rely on electromechanical relays, making the"click" a primary diagnostic symptom.
Malfunctions of the starting and thermal relay
The most likely reason why Biryusa refrigerator clicks and does not start lies in the failure of the starting relay. This small part is inexpensive, but plays a critical role in the operation of the entire system. Over time, the contacts inside the relay oxidize, and the starting coil or core loses its properties, no longer completing the circuit of the starting winding.
Thermal relay, which is often combined with the starting relay in one housing, can also be the culprit. It protects the motor from overheating. If its bimetallic plate is deformed or the contacts are stuck, the circuit will open instantly after voltage is applied. Visually, you can notice cracks, traces of soot or melted plastic on the relay body.
For diagnostics, you need to remove the back cover at the bottom of the refrigerator and remove the relay from the compressor. Shake the part near your ear: if something rattles inside, it means the core is damaged or broken off, and the part needs to be replaced. Checking the contacts with a multimeter will show the presence or absence of conductivity in the required positions.
☑️ Relay diagnostics
Replacing a relay is a procedure accessible even to beginners. The main thing is to choose an analogue with exactly the same characteristics, since the starting current parameters for different compressor models may differ. An incorrectly selected relay will either make it impossible to start or burn out the motor windings due to untimely disconnection of the starting coil.
Problems with the compressor: jamming and wear
If replacing the relay did not help and Biryusa refrigerator continues to click, the problem may be more seriously - in the motor-compressor itself. Mechanical jamming of the piston group is a common occurrence for equipment that has been in operation for more than 10 years. The oil thickens or burns out, the rubbing parts are deformed, and the motor is physically unable to turn the shaft.
When you try to start, you hear a powerful click of the relay and a hum that lasts 1-2 seconds, followed by silence. This indicates that the starter is trying to operate, but there is not enough torque. Sometimes “boosting” the compressor by applying increased voltage helps, but this is a temporary measure that requires professional equipment.
Another reason is an interturn short circuit in the motor windings. In this case, the current increases instantly, the thermal relay operates almost immediately, producing a shutdown click. You can check the windings with a multimeter by measuring the resistance between the contacts. If the resistance is close to zero or, conversely, infinitely large, the compressor is faulty.
⚠️ Attention: Attempts to independently repair the compressor, including opening it or rewinding it, at home are impossible and dangerous. There is refrigerant under pressure inside the system. It is necessary to replace the entire unit using special equipment for evacuation and refilling with freon.
Is it possible to revive a jammed compressor?
There is a “swinging” method, when a short-term high voltage pulse is applied to the windings to tear the pistons out of place. However, success is guaranteed only in 30% of cases, and most often this only delays the inevitable replacement. In addition, after such a procedure, the life of the compressor is sharply reduced.
Modern compressors often have a shorter life than the old Soviet counterparts installed in early models. Biryusa. Therefore, when a motor more than 15 years old fails, it is sometimes more economically feasible to consider buying a new refrigerator than expensive repairs with replacement, filter and refilling.
The influence of the thermostat and the electrical circuit
You should not discount other elements of the electrical circuit. The thermostat (thermostat) is responsible for sending the start signal. If its contacts are burnt or stuck in the open position, the compressor will not receive a start command. However, in this case, there may not be a click at all, or it will be heard in the upper part of the refrigerator, where the regulator itself is located.
Wiring problems can also cause strange sounds. Oxidized contacts in the connecting block, frayed wires or weak twisting create a high contact resistance. When current passes, heating and microscopic sparking occurs, which may be accompanied by crackling or clicking sounds. This is especially true for the places where the wires connect to the plug or inside the socket.
Check the voltage in the network. If it is very low (below 190-200 Volts), the starting torque may not be enough to start the engine. The compressor hums, the protection relay clicks, and the process repeats. In this case, the solution would be to install a voltage stabilizer or voltage control relay.
Diagnosing the circuit requires caution. Use a multimeter to check the continuity of the circuit from the plug to the compressor inlet. Make sure there are no breaks or short circuits to the housing. Often the problem lies in a banal malfunction of the socket or extension cord, which is not designed for the powerful load of the refrigerator.
Comparative table of symptoms and causes
To simplify diagnostics, we have systematized the main symptoms of malfunctions. Pay attention to the combination of sounds and indicator behavior.
| Symptom | Probable cause | Character of sound | Difficulty of repair |
|---|---|---|---|
| Clicking, buzzing for 2-3 seconds, silence | Compressor jammed | Humming + shutdown click | High (motor replacement) |
| Single click, silence | Starter fault relay | Clear metallic click | Low (relay replacement) |
| Series of frequent clicks | Voltage surges / Thermal relay | Frequent clicking | Medium (stabilizer) |
| Click in the upper part | Thermostat is faulty | Quiet click | Low (replacement thermostat) |
Step-by-step instructions for replacing the starting relay
If you determine that the problem is in the starting relay, replacing it will take no more than 20 minutes. You will need a new part (the markings must match, for example, P-1, P-2, P-3, P-4 or imported analogues such as Danfoss), a screwdriver and, possibly, pliers.
First, completely disconnect the power Biryusa refrigeratorby removing the plug from the socket. Remove the rear metal or cardboard panel at the bottom of the unit by unscrewing the mounting bolts. You will see a view of a black barrel-shaped compressor with a box attached to it - this is the relay you are looking for.
Carefully remove the relay from the pins of the compressor. It can be held on with latches or simply sit tightly. Disconnect the wires by first photographing or sketching the connection diagram so as not to confuse the contacts during assembly. Install the new relay in the reverse order, observing the orientation (usually the "UP" arrow should face up).
After assembly, turn on the refrigerator. If you hear the engine start confidently and there are no repeated clicks, it means the repair was successful. Let the unit run for 15-20 minutes and check if it begins to gain cold.
Prevention and care of the cooling system
To extend the life of the refrigerator and avoid a situation where Turk snaps stops freezing, follow simple operating rules. First of all, ensure stable voltage in the network. Using a surge protector with surge protection is a minimum requirement for modern electronics and sensitive motors.
Regularly clean the condenser (black grill) at the back of the refrigerator from dust and pet hair. A clogged heat exchanger causes the compressor to overheat, which causes the thermal relay to trip more often than usual. Also make sure that the refrigerator is level, without distortions, which reduces the vibration load on the components.
Do not overload the chambers with food and do not put hot food in the refrigerator. This causes the compressor to wear out, turning on and off frequently, which reduces the life of the starting equipment. Compliance with the temperature regime is the key to long service life of the equipment.
Why does the refrigerator click, but does not freeze?
If you hear clicks, but it is warm inside, this means that the compressor does not start or does not work the full cycle. The main reasons: a faulty start relay (does not allow the motor to start), a jammed compressor (the motor hums, but does not spin) or a freon leak (the compressor works, but there is no cold, although clicks in this case are less likely, more often just a hum).
How much does it cost to replace the relay on a Biryusa refrigerator?
Cost The starting relay itself varies from 500 to 1500 rubles, depending on the model and manufacturer of the part. If you call a specialist, the replacement work will cost approximately 1000-2000 rubles. Self-replacement allows you to save on the cost of work.
Is it possible to temporarily seal the relay contacts?
It is strictly not recommended. "Gluing" or blocking the thermal relay in the "on" position will lead to the fact that when the compressor jams, the current will increase indefinitely until the wiring or the motor itself burns out. This is a fire hazard and is guaranteed to damage the compressor.
Is it buzzing and clicking - is it really a relay?
Not always. If the click is followed by a buzzing sound lasting several seconds and then silence, this most often indicates a problem with the compressor itself (jamming) or critically low voltage in the network. The relay usually clicks instantly when trying to start and turns off instantly if there is a malfunction.