A sudden stop in the operation of a two-chamber refrigerator Biryusa is always stressful for the owners, because food supplies are at risk. Often the cause of such a malfunction is the failure of the starting relay, which is responsible for starting the compressor engine. If you hear the engine humming but not starting, or, conversely, clicking and immediately going silent, then the problem most likely lies in this small but critically important element.
Replacing this part yourself is a completely feasible task for a person who knows how to hold a screwdriver in his hands and follow safety precautions. You don't have to call a professional for such a minor but important operation if you are willing to act carefully. In this article we will analyze in detail the process of diagnosing, dismantling and installing a new starting relay on units of the brand Biryusa.
Before taking active steps, you need to make sure that you have the necessary tools and a spare part. Do not ignore safety precautions, since you will be working with electrical equipment. Proper preparation of the workplace and understanding of the structure of the compressor unit will significantly speed up the process of restoring the functionality of your equipment.
Diagnostics of a faulty start relay
The first step in any repair is an accurate diagnosis. The starting relay in refrigerators Biryusa performs the function of a switch that supplies voltage to the starting winding of the engine only at the moment of start. When the compressor rotor reaches the required speed, the relay opens the circuit. If this mechanism fails, the compressor either does not start at all or operates with severe interruptions.
The breakdown can be determined by the characteristic sounds and behavior of the unit. Typically a faulty relay will make a loud clicking sound followed by silence or a humming sound from the motor that won't start. After some time, the thermal protection is triggered and another click is heard - this turns off the protective device, saving the motor windings from combustion.
- 🔊 Characteristic click when you try to turn it on, after which the refrigerator is silent.
- 🔇 Complete absence of sounds of the compressor operating when plugged in unit.
- 🔥 Heating of the side wall of the housing or the compressor itself without cooling the chambers.
- ⚡ Triggering of the circuit breaker in the electrical panel when the refrigerator is turned on.
It is also important to conduct a visual inspection of the part after removal. There should be no traces of soot, melted plastic or cracks on the relay body. If you see black spots or smell a burning smell coming from the part, it must be replaced. Sometimes the problem lies in oxidation of the contacts, but in most cases the installation of a new element is required.
⚠️ Attention: If after replacing the relay the compressor still does not start or immediately knocks out the plugs, perhaps the problem is deeper - for example, an interturn short circuit of the motor windings or jamming of the piston group. In this case, independent repair can be dangerous.
It is worth remembering that the symptoms may be similar to a malfunction of the compressor or thermostat itself. However, it is the relay that is the most common cause of such failures in two-chamber models Biryusa. If you doubt the diagnosis, you can try to gently knock on the relay body (with the refrigerator on), sometimes this helps to temporarily start the unit, which will confirm the version of stuck contacts.
Necessary tools and preparation for work
To successfully carry out repair work, you will need a minimum set of tools that can be found in most homes men. The main requirement for tools is serviceability and safety of use. You should not use damaged wires or tools with damaged insulation, since the risk of electric shock when working with household appliances is always present.
Before starting any manipulations with the internal components of the refrigerator Biryusa it is necessary to completely de-energize the device. Unplug the power cord from the outlet and check that the plug is not damaged. Only after this can you begin to dismantle the protective covers and gain access to the compressor.
☑️ Preparation for repair
You will need the following tools:
- 🔧 Screwdriver (cross or flat) to remove the protective box.
- ✂️ Side cutters or wire cutters (if required).
- 🔌 Pliers for removing terminals and securing wires.
- 🧤 Dielectric gloves (recommended for added safety).
It is also extremely important to purchase a suitable replacement in advance. Relays for refrigerators Biryusa may differ depending on the compressor model (for example, Atlant, Donbass or foreign analogues). The marking is usually applied to the side or top edge of the old relay housing. Do not buy a part by eye, check the numbers.
Organize good lighting of the work area. The compressor is located at the bottom rear of the refrigerator, where light falls poorly. Use a flashlight or portable lamp to clearly see the contacts and fasteners.
Access to the compressor and removal of the casing
Two-chamber refrigerators Turk have a classic layout, where the compressor group is located in a niche in the lower rear part of the case. To access it, you must remove the protective metal or plastic casing. It is usually secured with several screws or latches.
Move the refrigerator away from the wall at a convenient distance to provide access from all sides. Be careful not to damage the floor or pinch the copper refrigeration pipes when moving. If the unit is heavy, it is better to carry out this operation together.
The process of removing the casing is as follows:
- Find the mounting screws around the perimeter of the protective cover.
- Use an appropriate screwdriver to unscrew them.
- Carefully remove the casing, being careful not to drop it on the copper tubes.
- Visually inspect the area around the compressor for oil stains or damage.
After removing the cover, you will see a black barrel-shaped compressor, condenser grille and tube system. A plastic box is attached directly to the motor pipe coming out of the housing - this is the starting relay, often combined with a thermal protective device.
⚠️ Attention: Do not use excessive force when removing the casing. If the screws cannot be unscrewed, check to see if they are acidified and use WD-40 to avoid stripping the threads or damaging the paint of the case.
Sometimes access may be difficult due to dust and cobwebs accumulated over years of use. Before starting electrical work, it is recommended to carefully vacuum the compressor niche so that debris does not get inside the mechanisms or onto the contacts.
Removing the old start relay
The process of removing the relay from the refrigerator compressor Biryusa is technically simple, but requires care. The relay fits directly onto the three contact pins coming out of the compressor housing. It can be fixed at the top with a metal clamp or plastic latches.
First of all, you need to disconnect the wires going to the relay. They fit into the terminal block or are inserted directly into the device housing. Remember or write down which wire is connected where, as the color marking may be non-standard or faded over time.
Contact connection diagram
Usually the relay has 2 or 3 contacts for connecting to the network and the compressor. Phase and zero go to the input, and at the output they are distributed to the starting and operating windings of the motor. Mixing up the wires can lead to a short circuit.
The sequence of actions for dismantling:
- 🔌 Disconnect the terminals power wires, carefully pulling them with pliers.
- 🗜️ Remove the retaining bracket (if there is one) by prying it flat with a screwdriver.
- 🔄 Slightly rock the relay from side to side to remove it from the contact pins of the compressor.
- 👀 Inspect the pins on the compressor - they should be smooth and clean.
If the relay sits very tightly and cannot be removed by hand, do not pull it sharply. You can gently heat the plastic case with a hairdryer (without overheating!) to soften the plastic, or use a thin screwdriver to gently release the internal spring lock. The main thing is not to damage the contact pins of the compressor itself; it will be extremely difficult to repair them.
After removing the part, compare it with the new one. They must be identical in shape, contact arrangement and markings. Even a small difference in the design can lead to the fact that the new relay will not fit into place or will not work correctly.
Installation of a new relay and assembly
Installation of a new starting relay is carried out in the reverse order of dismantling. Make sure that the new device is oriented correctly: there is usually a marking UP or UPon the case indicating which side the part should face up. Incorrect orientation will result in the mechanism not working.
Place the relay tightly onto the contact pins of the compressor until it clicks or stops. It should fit tightly and not wobble. After this, connect the wires to the corresponding terminals, observing the polarity and the diagram that you recorded earlier.
| Work stage | Action | Important nuance |
|---|---|---|
| 1. Check | Comparison of markings | The numbers must match completely |
| 2. Orientation | Search for the UP mark | The arrow should point up |
| 3. Installation | Attachment to pins | There must be tight contact |
| 4. Fixation | Installing the bracket | Vibration protection is required |
Attach the retaining bracket or latch that holds the relay in place. The vibration of a running compressor is high, and without secure fixation, the contacts can come loose, leading to sparking and repeated failure. Make sure that the wires do not touch hot parts of the compressor or sharp metal edges.
After connecting all the wires, return the protective casing to its place and tighten the mounting screws. Make sure that no wires are pinched by the cover and that the insulation is not damaged. Only after complete assembly can the refrigerator be connected to the network.
Checking the system functionality
After installation is completed, it is necessary to test run the refrigerator Biryusa. Plug in the unit and listen. The compressor should start the first time, without prolonged hums or repeated clicks. The sound of operation should be smooth and monotonous.
In the first minutes of operation, check whether the new relay is overheating. Light heating is acceptable, but if the plastic begins to melt or there is a burning smell, immediately unplug the device. This will mean that the relay is selected incorrectly or there is another malfunction in the system.
Monitor the operation of the refrigerator for several hours:
- ❄️ Check the appearance of cold in the freezer.
- 🌡️ Assess the cooling of the main compartment after 2-3 hour.
- 🔇 Make sure there are no cyclic clicks (turning on and off every 10-20 seconds).
⚠️ Attention: If after replacing the relay the compressor starts, but the refrigerator does not freeze, there may be no refrigerant in the system or the thermostat is faulty. The relay only provides engine start, but does not control the temperature.
The normal operating mode is when the compressor runs for a certain time (for example, 20-40 minutes), then turns off for a period equal to or greater than the operating time. If the cycle is too short, this may indicate a problem with the thermostat or a freon leak rather than with the relay.
Frequently asked questions and answers (FAQ)
Can an old relay be repaired rather than replaced?
Theoretically, if the problem is stuck contacts, they can clean up. However, the relay housing is usually soldered or glued, and opening it breaks the seal. In addition, there is a coil and mechanism inside that degrade over time. Repair is temporary, therefore replacement a new element is the only reliable solution.
Why does a new relay burn out after a short time?
A common reason is incorrect installation (not in the arrow) or a mismatch between the model and the compressor. Also, the relay can burn out if it itself compressor is faulty (turn-to-turn short circuit) and consumes too much current for which the relay protection is not designed.
Where can I find the relay markings on the Biryusa refrigerator?
The marking is on the plastic body of the relay itself. To see it, it is not necessary to remove the part completely; it is enough to remove the compressor protective casing and look at the side edge of the black or white box placed on the engine.
Is it dangerous to turn on the refrigerator without a relay?
It is absolutely forbidden. Without a starting relay, the compressor motor will not be able to start (it will not have enough torque), it will hum strongly and quickly burn out due to overheating of the windings. A relay is a mandatory element of the circuit.
Is a relay from another refrigerator suitable?
Only if the markings and electrical characteristics match (operation current, number of contacts). Visual similarity does not guarantee compatibility. It is better to look for original spare parts for Biryusa or complete analogues by catalog number.