Sudden stop of the compressor or lack of cold in the chambers of the Biryusa refrigerator often indicates a breakdown of the start-protection relay. This small device is responsible for starting the engine and protecting it from overloads, being one of the most vulnerable structural elements. Many owners of household appliances are faced with the need to replace this part and are looking for information on how to remove the relay on the Biryusa refrigerator without calling a technician.
Independent replacement is possible if you have a minimum set of tools and follow electrical safety rules. In this article, we will analyze in detail the process of diagnosing, dismantling and installing a new component, and also consider the features of various modifications of units.
Understanding the principle of operation of the unit will help you not only eliminate the current malfunction, but also prevent repeated breakdowns in the future. It is important to act consistently and carefully so as not to damage other systems of the refrigeration cabinet.
Signs of a faulty start relay
Before you begin disassembling, you need to make sure that the problem lies in the relay. Start-up protection device often fails due to voltage surges or natural wear of the contacts. One of the main symptoms is a characteristic click when the refrigerator is turned on, followed by the hum of the compressor, but the unit itself does not start.
After a few seconds of this operation, the thermal protection is activated and a second shutdown click is heard. The cycle can be repeated indefinitely until you unplug the device. Also, a malfunction is indicated by the complete lack of reaction of the motor when power is applied or, conversely, its constant operation without shutting down.
Visual inspection of the removed part often confirms the diagnosis: inside the case you can see traces of burning, melting of plastic or destruction of internal elements. If the relay emits a smell of burnt insulation, its operation is impossible and requires immediate replacement.
- 🔊 A loud click is heard, but the compressor does not start.
- 🔥 There is a smell of burning or smoke in the motor area.
- ❄️ The refrigerator has stopped working freeze, although the power indicator is on.
- ⚡ The motor hums for a few seconds and then turns off.
⚠️ Attention: If after clicking the compressor hums, but does not start, immediately disconnect the refrigerator from the power supply. Long-term operation in this mode can lead to burnout of the motor windings, the repair of which will cost much more than replacing the relay.
Necessary tools for work
To successfully perform the work of dismantling and installing the relay, you will need a standard kit for a home handyman. The main tool will be flat screwdriverwhich will be needed to remove the protective covers and disconnect the terminals. Some Biryusa models may use screws, so having a Phillips screwdriver will also be useful.
To check the serviceability of the old part and the new component, it is advisable to have a multimeter. This device will allow you to ring the contacts and verify the integrity of the circuit. If you don’t have a multimeter, you can check visually and by elimination, but this is less reliable.
Also prepare a container for small parts so as not to lose screws or fasteners during operation. You should work in good lighting, since the space behind the back wall of the refrigerator is often limited.
Safety measures and preparation
Any manipulations with electrical appliances require strict adherence to safety precautions. Before starting work, the Biryusa refrigerator must turn off the power completely. Simply turning off the button is not enough - be sure to unplug the plug from the socket to eliminate the risk of electric shock.
Let the unit stand unplugged for 10-15 minutes. This time is necessary for the capacitors to discharge and the heated compressor elements to cool down. Working with a hot motor is not only inconvenient, but also dangerous.
Move the refrigerator away from the wall, providing free access to the rear panel. Remove carpets and unnecessary objects so that nothing interferes with your view and movement. If the floor is slippery, lay down a rag or cardboard for stability.
⚠️ Attention: It is strictly forbidden to touch exposed wires or compressor terminals if the refrigerator is plugged in. Even a brief touch can cause serious injury.
Access to the compressor and relay
In Biryusa refrigerators, the compressor is usually located at the bottom of the rear wall of the unit. It is a black metal cylinder with copper tubes and electrical wires attached to it. The relay is mounted directly on the side or bottom of the motor housing.
In some older models, access to the assembly may be closed with a metal or plastic cover. To remove it, you may need to unscrew a few screws or simply unbend the locking latches. Be careful not to damage the plastic, which becomes brittle over time.
Once the cover is removed, you will be presented with a view of start-up relaywhich is often called a “tablet” because of its shape. It fits onto three contact pins coming out of the compressor. Around the relay are wires coming from the power cord and capacitor.
The process of dismantling the relay
Removing the relay is the most critical step that requires accuracy. The device is held in place by a tight fit on the contacts and, in some cases, an additional retainer or bracket. First, carefully inspect the fastening: if there is a metal strip, you need to bend it or unscrew it.
Then you need to disconnect the block with the wires. It can be removed by hand or require light pressure on the latch. Do not pull the wires sharply, so as not to break them at the base. If the block does not fit, use a flat-head screwdriver to carefully pry the lock.
The relay itself is removed by gently rocking it from side to side. It should come off the three studs on the compressor. If a part is stuck or rusty, you can warm it up slightly with a hairdryer, but do not allow the plastic to overheat. The main force should be directed along the axis of the studs, and not across.
☑️ Algorithm for removing the relay
After removing the part, inspect the inside of the case. Often inside you can see burnt contacts or a movable core that is jammed. This will confirm that relay replacement is really necessary.
Diagnostics and compatibility table
Biryusa refrigerator relays may differ in design and electrical characteristics. The most commonly used are induction (electromagnetic) or posistor devices. Induction ones have a movable core and contacts that open when heated, while posistor ones work by changing the resistance of the heating element.
For replacement, it is important to select an analogue with identical parameters. The marking is usually applied to the body of the part. If the original cannot be found, you can use universal models, but their parameters must match the requirements of your compressor.
The table below shows the main types of relays used in various equipment, including Biryusa, and their features:
| Relay type | Principle of operation | External characteristics | Compatibility |
|---|---|---|---|
| Induction (RTK) | Electromagnetic opening | Heavy, movable rod inside | Old Biryusa models |
| Posistor (RTP) | Thermal expansion of ceramics | Lightweight, ceramic tablet inside | Modern models |
| Combined | Combines start and protection | Complex shape, several contacts | Specific series |
When purchasing a new part, pay attention to the amperage indicated on the case. It should match the power of your compressor. Using a relay with a lower current will lead to its rapid combustion, and with a higher current it will lead to a lack of motor protection.
Is it possible to use a relay from another refrigerator?
Yes, you can if the mounting dimensions and electrical parameters (current, voltage) match. However, it is better to look for original spare parts or their direct analogues to avoid problems with the compatibility of the protection system.
Installation of a new relay and testing
Installation of a new component is carried out in the reverse order of dismantling. First, the new one start relay is put on three compressor studs. It should fit tightly and not wobble. Make sure that it is located in the correct position: usually there is an "UP" or "UP" marking on the housing, indicating the top.
Then the block with wires is connected. Check that the contacts engage until they click and are not loose. If a retaining bracket or screws were used, replace them. Make sure that the wires do not touch hot parts of the compressor or sharp metal edges.
After assembly, plug in the refrigerator. In the first seconds, a characteristic start-up click may be heard, and the compressor should begin to operate smoothly, without humming or vibration. After some time, cold should appear in the chambers.
⚠️ Attention: Technical characteristics and location of elements may vary slightly depending on the year of manufacture and the specific model of the refrigerator. Always check the technical documentation or markings on the nameplate of your device before ordering spare parts.
Frequently asked questions (FAQ)
Is it possible to repair an old relay rather than buy a new one?
Theoretically, an induction relay can be disassembled, cleaned of carbon deposits from the contacts and reassembled. However, this is a temporary measure. The metal of the contacts has already burned out, and the problem will return in a short time. In addition, the tightness and calibration of the thermal protection are broken, which is dangerous for the motor.
Why does a new relay burn out after a short time?
A common reason is unstable voltage in the network or a malfunction of the compressor itself. If the motor windings are “interfered” or the piston group is jammed, the starting currents increase and the relay burns out. Also, the problem may be in oxidized contacts on the compressor itself.
Where can you find the relay markings on the Biryusa refrigerator?
The markings are applied directly to the plastic or metal relay body. To see it, the part will have to be removed. Look for designations like RTK-1, RTP-1 or manufacturer codes like Danfoss, Secop.
Is it dangerous to change the relay yourself?
If you follow electrical safety rules (mandatory disconnection from the network), the procedure is safe. The main danger is electric shock when the device is turned on or damage to the compressor tubes due to careless handling of the tool.