Sudden failure of the refrigerator Biryusa is always stressful, because food supplies are at risk. Most often, the reason for the silence of the unit is the failure of the start-up relay, a small but critical component of the compressor. If you notice that the motor hums but does not start, or clicks and immediately goes silent, most likely this element needs to be replaced.
Independent Replacing the relay is quite within the capabilities of a person who knows how to hold a screwdriver and a multimeter. The main thing is to observe safety precautions and strictly follow the algorithm of actions. In this article we will look at all the nuances of diagnosing and installing a new component so that your refrigerator works like new again.
Diagnosing a faulty start relay
Before disassembling the equipment, you need to make sure that the problem lies in the relay, and not in the compressor itself or thermostat Start relay responsible for starting the engine by supplying current to the starting winding, and thermal protection turns off the power in case of overload. If these functions are impaired, the refrigerator stops cooling.
The first sign of a malfunction is the characteristic behavior of the motor: it tries to start, makes a loud hum, then a click is heard and the operation stops. After some time, the cycle may repeat. It is also worth paying attention to the appearance of the part: if traces of burning, melting or cracks are visible on the body replacement is required without additional checking.
For accurate diagnostics you will need a multimeter. After removing the part, call the contacts. The resistance should be close to zero on the working contacts and infinite on the open ones. If the device shows an open where there should be a circuit, or a short circuit, the part is faulty.
⚠️ Attention: If after replacing the relay the situation has not changed and the compressor still hums and clicks, the motor itself may be jammed or there is a problem in the wiring. In this case, further repairs require a skilled technician.
Necessary tools and preparation for work
Successful repairs do not require complex industrial equipment. A basic DIY kit is enough. It is important to prepare all the tools in advance so as not to interrupt the process of searching for the right screwdriver.
You will need:
- 🔧 Flat and Phillips screwdrivers for removing the casing and clamps.
- 🔌 Pliers or side cutters for working with wires (if necessary).
- 🧤 Dielectric gloves for protection against residual voltage.
- 📸 Smartphone for photographing the connection diagram before disassembly.
Be sure to disconnect the refrigerator Biryusa from the power supply. This is the first and most important safety rule. Even if the unit is not running, voltage may remain in the circuit. Let the compressor cool down if it tried to start before.
☑️ Checking readiness for repair
How to remove the old relay from the compressor
Access to the relay is through the back wall of the refrigerator. Models Turkish often require removing the protective cardboard or plastic casing covering the motor-compressor. It is usually fastened with latches or screws.
Find a black cylindrical or rectangular block placed directly on the compressor fitting. It is in it that the required part is located. Before pulling the wires, take a photo of the connection. This will help to avoid errors during assembly, since the color marking of the wires may differ from one manufacturer to another.
Carefully remove the retaining bracket or clamp that presses the relay to the compressor housing. After this, pull the part down. It should come off the motor contact group. If the wires are short, be careful not to damage the insulation.
⚠️ Attention: Do not use excessive force when removing the relay. The plastic of older models can be fragile and crumble in your hands, which will complicate the removal of contacts.
Choosing a suitable spare part for Biryusa
Refrigerators Biryusa are equipped with compressors from various manufacturers, so a universal relay "for "all" does not exist. The most common models are from Danfoss, Secop or domestic RT and P-3.
When purchasing a new part, be guided by the markings applied to the body of the old element. The type of compressor is also important: one relay is used for single-phase motors, and another for two-phase motors. An error in selection will result in the motor either not starting or burning out.
Compare the technical specifications in the table below to ensure the correct choice:
| Parameter | Relay P-3 (Old models) | Danfoss relay 101L0021 | Relay Secop (Danfoss) 101N0021 |
|---|---|---|---|
| Contact type | Mechanical | Electromagnetic | Electromagnetic |
| Motor power | up to 250 W | up to 1/3 hp | up to 1/3 hp |
| Orientation during installation | Strictly vertical | Strictly vertical | Strictly vertical |
| Presence of thermal protection | Built-in | Separately or as a set | Often included |
Is it possible to use a relay from another brand?
Yes, you can if the electrical characteristics and mounting dimensions match. However, it is better to look for the original or a complete analog specified in the documentation for the compressor in order to avoid problems with thermal operating conditions.
Installing a new start relay
The installation process is performed in the reverse order of dismantling. Insert the new starting relay onto the contact group of the compressor until it stops. It should fit tightly and not wobble. If you use a clamp or bracket, securely fix them.
Connect the wires according to the photo or diagram taken earlier. Usually the red wire goes to one contact, the black wire to the other, but it is better to double-check the markings on the product itself. Incorrect connection may cause a short circuit.
Make sure that the thermal protection (if separate) fits tightly to the compressor housing or is installed in the intended location. The quality of the thermal contact determines how effectively the overheating protection will work.
Checking performance after replacement
After installing all the elements in place, but before placing the refrigerator in its rightful place, conduct an initial test. Plug in the unit. You should hear the compressor start confidently without prolonged buzzing or clicking.
Let the refrigerator operate for 10-15 minutes. At this time, check the heating of the relay housing and compressor. Slight warming is allowed, but not extreme heat. If you smell a burning sensation or hear a crackling sound, immediately turn off the device.
If the startup was successful, reinstall the protective cover. You can now download products. Full restoration of the temperature in the chambers Biryusa will take several hours.
Why does the relay burn out in the Biryusa refrigerator?
The main reasons for failure are power surges in the network, natural wear of the contacts and overheating of the compressor due to poor ventilation or contamination of the condenser at the back.
Is it possible to repair an old relay?
Theoretically, you can clean the contacts or replace the thermoelement, but the service life of such repairs is extremely short. It’s easier and more reliable to buy a new part, which is inexpensive.
How often do you need to change the relay?
The service life of a high-quality relay is 5-10 years or more. Frequent replacement indicates problems with electrical wiring in the house or unstable voltage.