A sudden stop in the operation of refrigeration equipment always becomes an unpleasant surprise, especially if there are perishable products inside. Domestic units of the brand Biryusa are famous for their reliability and simplicity of design, which makes their repair accessible even to a home craftsman with basic skills. Understanding the principles of operation of the compressor and the heat removal system will allow you to save significant money on calling a specialist.
Before taking active steps, it is necessary to carry out an initial diagnosis to eliminate trivial problems with the power supply. Often the reason for the “silence” of equipment is a banal lack of voltage in the socket or damage to the cord. Careful inspection external elements can immediately indicate the source of the malfunction, which does not require disassembling the case.
In this article we will analyze in detail the algorithms for troubleshooting, replacing key components and the nuances of servicing various models, including popular ones series 133 i 134. You will learn how to safely defrost the system, check the serviceability of the thermostat and understand when you can’t do without calling a professional.
Primary diagnostics and checking the power supply
The very first step in finding the cause of the breakdown is checking the connection to the electrical network. Make sure that the plug is firmly inserted into the socket and that the connector itself is not melted or has any burn marks. If the indicators on the front panel do not light up, try connecting another electrical appliance to the same outlet, for example, a lamp or hair dryer, to eliminate problems with the wiring in the apartment.
Next, you should inspect the power cord along its entire length. Mechanical damage to the insulation, kinks or marks from the teeth of pets can lead to a short circuit or open circuit. Safety here above all: if you find damage to the cable, it must be replaced with a similar one with a suitable cross-section of conductors.
⚠️ Attention: Before any intervention in the internal components of the refrigerator, be sure to disconnect it from the network. Residual voltage in the start relay capacitors can be dangerous, and contact with live parts is fatal.
If everything is in order with the external power, but the unit still does not show signs of life, the problem may lie in the start relay or thermostat. In some models Biryusa with electromechanical control, failure of the thermostat breaks the compressor power supply circuit. Testing the contacts with a multimeter will help determine the integrity of the circuit.
Problems with defrosting and freezing of ice
One of the most common complaints from owners is excessive freezing of the “fur coat” on the back wall or in the freezer. In models with manual defrosting, this may be normal when doors are opened frequently, but in No Frost or drip-type systems this indicates a malfunction. Tightness failure The door seal leads to a constant influx of moist air, which instantly crystallizes.
If you notice that there is an ice crust grows unevenly or prevents the door from closing, check the condition of the rubber seal. It should fit snugly around the entire perimeter of the body. Deformations, cracks or contamination of the magnetic tape require replacement or thorough cleaning and drying.
How to defrost the Biryusa refrigerator correctly?
For complete and safe defrosting, unplug the device, remove all food and leave the doors open for at least 12-24 hours. Do not use a hairdryer or a knife to chip away at the ice - this may damage the evaporator and lead to a freon leak. Place containers for draining water and wipe the internal surfaces dry.
In systems with automatic defrosting, the defrosting element and timer are responsible for removing moisture. If the evaporator is completely covered with ice and the fan does not spin, then the defrost cycle does not start. This may be due to a burnt-out heating element or a broken defrost sensor. Diagnosis of these elements requires partial disassembly of the internal panel of the freezer.
It is important to understand that the use of aggressive chemicals to speed up defrosting is prohibited. They can damage the plastic elements of the interior and disrupt the structure of the seals. The only safe way to speed up the process is to place containers with warm (not hot!) water inside the chamber.
Replacing the thermostat and temperature sensors
The thermostat (thermostat) is the “brain” of the cooling system, which gives the command to the compressor turn on or off depending on the temperature inside the chambers. If the refrigerator Biryusa stops turning off and freezes food to the point of deep freezing, or, on the contrary, does not turn on at all, most likely this particular unit has failed.
To replace the thermostat, you need to remove the plastic cover covering the regulator and disconnect the contact group. In models with a capillary tube, you need to be extremely careful not to damage the thin copper sensor tube that is inserted into the evaporator. Any deformation of the tube will lead to leakage of freon from the thermostat bellows.
☑️ Replacing the thermostat
In modern models with electronic control, air sensors are used instead of a mechanical thermostat. They are checked with a multimeter in resistance measurement mode. As the temperature changes, the resistance of a working sensor should change smoothly. If the device shows a break or short circuit, the part must be replaced.
After installing a new regulator, you need to adjust the temperature mode. For mechanical models, this is done by rotating the splines on the stem. In electronic systems, adjustment is made through the control panel according to the user instructions. Calibration may take several hours of operation of the unit.
Diagnostics and replacement of the compressor starting relay
The starting relay is responsible for starting the compressor engine and protecting its windings from overload. A characteristic sign of a malfunction of this unit is a click when trying to start, after which the motor hums for a couple of seconds and turns off. Visually, traces of burning or melting of plastic may be visible on the relay.
To replace the relay, simply remove the rear protective cover of the refrigerator (crankcase), disconnect the wires and remove the old part from the compressor contacts. It is important to choose an exact analogue, since the starting characteristics of different engine models Biryusa may differ. Usually the marking is applied to the body of the relay itself.
| Symptom | Possible cause | Solution method |
|---|---|---|
| The compressor is humming, but not starts | The starting relay is jammed or the compressor is jammed | Replacing the relay, checking the windings |
| The refrigerator turns on and immediately turns off | Thermal protection relay has tripped | Checking the current consumption, replacing the relay |
| Crackling or sparking is heard | Relay contacts are burnt | Urgent replacement of the starter |
| The compressor is hot, but not works | Interturn closure of the windings | Replacing the compressor |
If after replacing the relay the situation has not changed, the problem may be more serious - for example, in the compressor itself. However, in most cases, for older models Biryusa replacing the starting device brings the equipment back to life. The cost of this part is low, and the replacement process takes no more than 15 minutes.
⚠️ Attention: Do not attempt to repair the start relay by stripping the contacts or gluing the housing. This device is inexpensive, but its incorrect operation can lead to burnout of the compressor windings, the repair of which is not economically feasible.
Elimination of noise and vibration during operation
Increased noise levels and vibration can cause serious discomfort, especially if the refrigerator is installed in the kitchen-living room. Often the source of the sound is not a breakdown, but an incorrect installation. Make sure the unit is level and the leveling feet are firmly pressed to the floor. The gap between the back wall and the furniture should be at least 5-7 cm for free air circulation.
If the installation is correct, listen to the nature of the sound. The humming noise may come from rattling refrigerant pipes touching the housing or each other. By carefully straightening them by hand (only with the compressor turned off!), you can eliminate contact and reduce noise. Also check if the shelves or bottles inside the chambers are vibrating.
A more serious cause of noise may be wear on the motor-compressor. If the unit makes a metallic clanging, knocking or high-pitched whistle, this indicates destruction of the internal mechanical parts. In such cases replacing the compressor is the only way out, but requires the participation of a qualified technician with equipment for refilling freon.
When you need to call a professional technician
Despite the maintainability of the equipment Biryusa, there are situations where independent intervention can only aggravate the situation. The most critical is a refrigerant (freon) leak. If you hear hissing from the tubes or see oily spots under the unit, it means that the circuit is depressurized.
To eliminate the leak you need:
- 🔍 Find the location of the damage using a leak detector or soap solution.
- 🔥 Solder the copper tubes with a torch (oxygen-propane).
- 💨 Vacuum the system with a special pump to remove moisture and air.
- ❄️ Fill the system with a precisely measured amount of freon of a certain brand.
Another complex malfunction is a clogged capillary tube. The symptoms are similar to a leak: the compressor runs constantly, but there is no cold, and the condenser (grid at the back) remains cold or only partially warms up. Cleaning the capillary requires professional tools and skills in working with high pressure.
It is also worth contacting specialists if you need to replace the motor-compressor itself. This process involves resoldering the copper tubing, installing a new filter drier, and a complex refilling procedure. An error at any stage will lead to rapid breakdown of the new expensive unit.
⚠️ Attention: Freon used in refrigerators may be flammable (isobutane) or require special disposal conditions. Independent soldering of the circuit without skills and equipment is prohibited and dangerous to life.
Frequently asked questions (FAQ)
Why does the Biryusa refrigerator work without stopping?
Most often this indicates a malfunction of the thermostat, which does not give a signal to turn off, or Freon leakage, due to which the unit cannot reach the desired temperature. Also, the reason may be a loose fit of the door.
How to understand that the compressor has burned out?
If the plugs are knocked out when turned on, a strong beep is heard followed by a click and silence, or the motor housing is excessively hot and smells of burnt insulation - most likely, the compressor has failed.
Is it possible to transport the Biryusa refrigerator lying down?
It is strictly not recommended. When transporting lying down, oil from the compressor may leak into the freon circulation circuit, which will lead to blockage and breakdown. If transportation cannot be avoided, place it only on its side and let it stand upright for at least 12 hours before turning it on.
What kind of freon is used in Biryusa refrigerators?
In older models, R12 was used, in modern ones, R134a or R600a (isobutane) is most often used. The exact information is indicated on the nameplate located inside the chamber or on the back wall.