A sudden stop in the operation of refrigeration equipment always causes panic, especially when there are perishable products in the chambers. The brand's two-chamber models Biryusa are famous for their reliability, but even time-tested equipment has failures in the electrical circuit. Most often, the culprit for the lack of cold is the starting or thermal protective relay, which is responsible for starting the compressor.
Before calling a technician, you should try to diagnose and possibly replace the part yourself. This will save budget and time, since the dismantling procedure does not require complex specialized tools. The main thing - strictly follow the algorithm of actions and observe safety precautions when working with electrical appliances.
In this article we will analyze in detail where the required unit is located, how to remove it correctly and what to look for when inspecting the contacts. You will learn about the design nuances of various modifications of refrigerators Biryusa and understand whether it is worth repairing the old element or whether it is better to install a new one right away.
Diagnostics of a malfunction of the starting device
The first sign of failure of the starting mechanism is a characteristic click, after which the motor-compressor either does not start at all, or It buzzes for a couple of seconds and then goes silent. If you hear this sound and the refrigerator and freezer compartments are not cooling, there is most likely an electrical problem with the motor. It is also worth listening: if the unit operates cyclically, turning on and off every few minutes, this is a good signal to check the relay.
Sometimes the situation may be less obvious. For example, a refrigerator Biryusa works, but the inside of the chambers is not cold enough, or the compressor housing heats up to critical temperatures. In such cases thermal relay may operate ahead of time, opening the circuit and protecting the engine from overheating. This occurs if the contacts inside the device are oxidized or burnt, creating additional resistance.
⚠️ Attention: If, when trying to start, you smell burnt conductivity or see sparking, immediately disconnect the device from the network. Further operation in this condition may lead to fire or complete failure of the compressor.
For an initial check, it is not necessary to immediately disassemble the unit. Try to visually inspect the back wall: if traces of soot, melted plastic or swelling of the housing are visible on the starting device, the diagnosis is obvious. In some models, especially older series, the malfunction can be determined by sound - rattling inside the plastic case when slightly shaken (after cooling!) indicates destruction of the core or coil.
Necessary tools and safety measures
Working with electrical equipment requires compliance with strict rules, neglect of which can be life-threatening. The most important measure is to completely disconnect the refrigerator from the power supply before starting any manipulations. It is not enough to simply turn it off with a button, if there is one; you must unplug the plug from the socket. Only after this can you begin to prepare the workplace and tools.
To successfully remove the relay from a two-chamber refrigerator Turk you will need a minimum kit for a home craftsman. The basis is a screwdriver, preferably with a flat blade, since many fasteners and latches are designed specifically for this profile. Also, a Phillips screwdriver will not be superfluous in case you need to remove the entire protective cover of the compressor.
In addition to screwdrivers, prepare the following tools and materials:
- 🔧 Pliers or pliers for carefully removing the terminals.
- 🧤 Dielectric gloves for protection from residual voltage and sharp edges.
- 🔦 Flashlight for high-quality illumination of the compressor area.
- 📷 Smartphone with a camera to photograph the wiring diagram.
Pay special attention to the condition of the wires. If the insulation on the cables connecting to the relay is cracked or melted, the insulating layer must be restored before installing a new part. Use a heat-shrinkable tube or high-quality electrical tape for this. Contact group must be clean and dry, the presence of moisture or oxides is unacceptable.
☑️ Preparation for repair
Relay location in two-chamber Biryusa models
Structurally, two-chamber refrigerators Biryusa are designed quite traditionally. The compressor, which is the heart of the system, is located at the lower rear of the housing. You don't need to disassemble the interior shelves or remove the doors to access it. It is enough to move the unit away from the wall, providing yourself with convenient access to the rear panel.
Depending on the year of manufacture and the specific series, access to the compressor can be organized in different ways. Most modern models have a metal or plastic cover covering the engine compartment. It is attached with screws or latches. In older modifications, protection may be absent, and the compressor with attachments is immediately visible.
The starting relay itself is a small plastic block attached directly to the terminals of the compressor. It can be black, gray or white, depending on the component manufacturer (parts Danfoss, Secop or domestic analogues are often used). Technical specifications, such as voltage and power, are usually stamped on the case, which will help when selecting a replacement.
It is important to distinguish between the types of relays, since they are attached and removed differently. There are models with side mounting, where the block is put on the side on three pins, and with a vertical arrangement. In two-chamber refrigerators Biryusa most often a scheme is used where the starting and thermal relays are combined in one housing or rigidly connected to each other.
Differences between inverter compressors
If your refrigerator is equipped with an inverter compressor (works silently and without characteristic start-up clicks), the diagnostic principle changes. In such models there is no classic starting relay, and the start is controlled by an electronic unit. There is nothing to remove there; diagnostics of the control board is required.
Step-by-step instructions: how to remove the relay
The dismantling process requires care, but does not take much time. After you have removed the protective cover of the engine compartment and made sure that there is no voltage, you can begin to remove the device itself. Visually inspect the mounting location: most often the relay is simply put on the contact pins of the compressor and fixed by its own weight or by light snapping.
The action algorithm is as follows. First you need to disconnect the wires going to the relay. Do not pull on the wires themselves, hold on to the plastic contact blocks. If the terminals are tight, carefully pry them open with a flathead screwdriver or use pliers, being careful not to damage the metal. A previously taken photo will help you not to confuse the wires during reassembly.
Next, you should remove the block itself from the compressor terminals. To do this, take the relay housing with your hand and remove it downwards using rocking movements from side to side. Sometimes the plastic can “stick” due to time and temperature, then a slight force is required. Do not use excessive force so as not to break the plastic mounting ears or, worse, damage the copper tubes of the compressor.
On some models Biryusa the relay is additionally secured with a metal bracket or a plastic holder. If you see such an element, you must first unscrew or snap it off. Only after releasing the fixing element will the block be freely removed from the pins.
| Type of fastening | Removal features | Risks |
|---|---|---|
| Reliable (on pins) | Removed by rocking down | Breakage of pins when jerked |
| Latch-bracket | Requires bending of the bracket | Loss of a bracket, hand injury |
| Terminal block | Removing terminals before dismantling | Breakage of wires at the terminal |
| Integrated | Removed together with the casing | Difficulty of reinstallation |
After removal, carefully inspect the inside of the relay. If you see traces of burning, melting or smell burning, the part definitely needs to be replaced. Even if it is externally intact, but the refrigerator does not start, the likelihood of an internal malfunction of the coil or bimetallic plate is extremely high.
Typical mistakes when dismantling and installation
Inexperienced technicians often make mistakes that can lead to repeated breakdowns or damage to other components of the refrigerator. One of the most common problems is incorrect relay positioning when reinstalling. The triggering device has a strictly defined orientation, indicated by an arrow UP (top) on the body. If you install it upside down, the mechanism will not work correctly or will burn out instantly.
Another common mistake is ignoring the condition of the wires. If during removal you damage the insulation or break the wire strand at the terminal itself, over time a spark will occur in this place. This will cause heat, burnt contacts and ultimately lead to failure of the starting system. Always check the integrity of the wiring before connecting a new element.
It is also worth mentioning the error in choosing a spare part. Relays for refrigerators Biryusa may differ in power and type of connection. Installing an analogue with unsuitable characteristics (for example, designed for a lower engine power) will lead to the contacts sticking or burning out in the shortest possible time. Always check the markings of the old device with the new part.
⚠️ Attention: Do not try to clean the burnt contacts of the old relay with sandpaper and it. This is a temporary measure that will not restore the factory properties of the bimetallic strip, and the breakdown will recur in a few days or even hours.
Sometimes users forget to lock the terminal block until it clicks. Poor contact leads to heating and oxidation. Make sure that all connections are tight and do not loosen when slightly jiggled. The reliability of the contact directly affects the service life of both the relay itself and the compressor.
Checking the functionality of the removed relay
If you doubt the diagnosis and want to make sure that the problem is in the relay, you can carry out a simple test. The removed device can be shaken near the ear: if a ringing is heard inside, as if from a loose part, it means that the core is destroyed and the relay is faulty. However, the absence of sound does not guarantee serviceability, so it is better to use a multimeter.
To check, you will need a tester switched to the continuity or resistance measurement mode. Connect the probes to the contacts corresponding to the coil. The resistance should be low (a few ohms), which indicates the integrity of the winding. If the device shows infinity (open circuit) or zero (short circuit), the part is unsuitable for use.
The thermal relay, which is often paired with the starting relay, is checked in a similar way. When cold, its contacts should ring (resistance is close to zero). When heated (which is difficult to check at home without special equipment), they should open. If the circuit does not ring even when cold, the thermal protection has burned out and requires replacement.
Frequently asked questions (FAQ)
Is it possible to install a relay from another brand of refrigerator on Biryusa?
Yes, this is possible, but only if the electrical characteristics are completely identical and landing dimensions. The main thing is the correspondence of the compressor power (indicated on the marking, for example, 1/5 HP, 1/4 HP) and the location of the contact pins. Universal relays often have adapters included.
Why does a new relay burn out a few days after replacement?
There may be several reasons: incorrect installation (not in the UP arrow), a malfunction of the compressor itself (turn-to-turn short circuit of the windings), or problems with the voltage in the network. It is also worth checking whether the terminals are tightly seated - poor contact causes heating and melting of the plastic.
Where can you find the relay markings on the Biryusa refrigerator?
The markings are applied directly to the plastic case in black or gray. Look for inscriptions like R600a (refrigerant type, indirectly indicates the series), voltage (220-230V) and power (W or HP). Also, the spare part number can be indicated in the technical documentation of the refrigerator.
Is it safe to remove the relay without special skills?
Yes, if the main rule is followed - complete disconnection from the power supply. The mechanical part of the process is simple and does not require deep knowledge of electrical engineering. However, if you see complex damage to the wiring or are not sure of your actions, it is better to contact a professional technician.