Searching for where the fan is located in refrigerator Biryusa, often becomes the first step in diagnosing problems with cooling or the appearance of extraneous noise. In modern models with the system No Frost this unit plays a critical role in ensuring the circulation of cold air throughout all chambers of the refrigerator compartment. If you hear a hum, creaking, or notice that the food has stopped freezing, and frost has appeared on the walls, most likely the reason lies precisely in the operation or location of this mechanism.
Owners often mistakenly believe that access to the fan is located at the back of the unit, but in the design Biryusa it is hidden inside freezer behind a special panel. To carry out high-quality diagnostics or replacement, you do not have to be a professional technician, but you need to clearly understand the structure of your specific model. In this article we will analyze in detail the layout, types of motors used and the algorithm of actions in the event of a malfunction.
Types of fans and their purpose in the No Frost system
Before you begin your search, it is important to understand what type of motor is installed in your refrigerator, since the testing methodology depends on this. In refrigerators Biryusa most often two types of fans are used: the main evaporative fan and, in some two-compressor models, an additional blower fan. The main fan evaporator is responsible for driving air through the radiator, where it is cooled, after which it is distributed among the chambers.
The second type is a fan circulationwhich can be located directly in refrigerator compartment or in the channel between the chambers. Its task is to distribute the already cooled air evenly, preventing the formation of “warm zones”. If the first fan stops working, the freezer stops producing cold, and if the second one, there is cold, but it does not reach the products on the shelves.
It is worth noting that in different series Biryusa (for example, 133, 134 or newer series with electronic control) the design may differ. In some models, the engine is mounted directly on the evaporator casing, in others it is placed in a separate mounting block. Understanding this difference will help you not to look for extra parts where they are not structurally provided.
Exact location: where to look for the blower unit
So, where exactly is the fan in the refrigerator Biryusa? In the vast majority of models with the No Frost system, it is located in freezer compartment. To access it, you will need to remove the back wall (panel) inside the freezer. It is behind this plastic partition that the evaporator and the motor with the impeller mounted on it are hidden.
In some modifications, especially in models with a lower freezer compartment, the fan may be located in the upper part of the rear box. The impeller is usually directed towards the channel leading to the refrigeration compartment. If you have removed the panel but do not immediately see the fan, inspect the side walls of the inner box - sometimes it is mounted on the side of the radiator.
⚠️ Attention: In models with the Full No Frost system, there may be a second fan in the refrigerator compartment. It is often hidden behind a decorative cover on the back wall of the main chamber, closer to the top. Do not confuse it with the temperature sensor, which is smaller.
For visual search, follow the logic of air flow: cold air must come from somewhere. Find the air outlet holes (usually in the back of the chamber or on the side walls under the shelves) - the fan will be at the beginning of this channel, hidden behind the protective panel.
Instructions for dismantling the rear panel
Access to the fan is impossible without carefully removing the protective panel. This process requires care, as the plastic in old refrigerators Biryusa can be fragile. First, you need to completely defrost the unit, even if the model is equipped with a No Frost system, so that the ice does not interfere with disassembly and does not damage the wiring.
The process of removing the panel is as follows:
- 🔧 Unscrew all visible screws securing the panel (usually there are 4-6 of them, they can be hidden under decorative plugs).
- ❄️ Gently bend the plastic latches around the perimeter using a flat-head screwdriver, but do not use excessive force.
- 🔌 Disconnect the wire connectors going to the sensors and the lamp, if they are attached to the panel.
- 🧊 Remove the panel, being careful not to damage the layer of thermal insulation that may stick to the plastic.
After removing the panel, you will have access to evaporator and the fan attached to it. Pay attention to the condition of the pipes and the absence of ice on the blades. If the fan is covered with ice, the defrost system may be faulty, and not the motor itself.
☑️ Preparation for disassembly
Diagnostics of fan malfunctions
Having understood where the fan is located in the refrigerator Biryusa, it is necessary check its functionality. Often the problem lies not in a burnt-out motor winding, but in a mechanical jam. If, when you turn on the refrigerator, you hear a humming sound, but the blades do not rotate, try carefully (for example, with a pencil) turning the impeller. If it moves tightly, the bearing is dry or clogged with dirt.
If the impeller rotates freely by hand, but does not operate from the mains, the problem may be in the electrical part. It is necessary to ring the motor windings with a multimeter. Normal resistance should be within from 100 to 600 Ohm, depending on the specific engine model. If the device shows an open circuit (infinity) or a short circuit (zero), the motor requires replacement.
It is also worth checking the power circuit. In some models Biryusa the fan is powered only when the freezer door is closed. The door limit switch is responsible for this. If the switch is faulty or stuck, the circuit does not close and the motor does not receive power, although the motor itself may be fully operational.
Why does the fan only work when the door is closed?
This is done for safety and energy saving. When the door is open, a running fan will blow cold air out, which will lead to rapid fouling of the evaporator with frost and increased load on the compressor.
Table of symptoms and causes
For ease of diagnosis, we have compiled a table that will help compare symptoms with possible causes of failure in the fan assembly.
| Symptom | Probable cause | Action |
|---|---|---|
| Strong noise, buzzing | Bearing wear or ice getting on the blades | Defrosting or replacing the fan |
| The fan does not spin | Breakage of the winding or lack of power | Connection with a multimeter, checking the circuit |
| The refrigerator freezes poorly | Reduced blowing performance | Cleaning the blades, checking rotation |
| Intermittent operation | Failure of the door limit switch or thermostat | Checking the limit switches |
Analysis of these signs allows you to save time and immediately order the necessary spare part. Don't ignore the noise - an overloaded motor can melt the plastic housing or cause a short circuit.
Replacement and features of installing a new part
If diagnostics showed that the fan is faulty, it must be replaced. Refrigerators Biryusa use motors mounted with screws or special plastic brackets. When removing the old motor, be sure to take a photo of the wire connection diagram so that when installing a new one you do not confuse the polarity.
When installing a new part, make sure that the impeller sits tightly on the shaft and does not touch the walls of the casing. Play or misalignment will lead to vibration and noise. After assembling all the elements, perform a test run. If everything is done correctly, you will hear a smooth sound of the motor 1-2 minutes after the compressor starts.
⚠️ Attention: Do not use lubricant (WD-40 or oil) to resuscitate the old fan in No Frost refrigerators. The grease will wash away the remaining factory grease in the sliding bearings, and after a week the fan will completely jam. Replacement only!
Frequently asked questions (FAQ)
Is it possible operate the Biryusa refrigerator if the fan does not work?
Short-term - yes, but the cooling efficiency will drop by 60-70%. Food in the freezer may begin to thaw, and the temperature in the refrigerator compartment will rise. Long-term operation without blowing will lead to freezing of the evaporator and failure of the compressor due to overheating.
Where to buy an original fan for Biryusa?
Original spare parts are often marked by the engine manufacturer (for example, YJ61, YJ83, etc.). You need to look for the following parameters: impeller size, shaft length, voltage (usually 220V) and type of fastening. Compatible analogues are sold in spare parts stores for household appliances.
Why does the fan not turn on immediately after the compressor starts?
This is the normal operation of the algorithm. In some models, the fan starts with a delay of 5-10 minutes after the compressor starts to avoid blowing up still warm air. It can also turn off during the defrost cycle.
How to remove the impeller if it is tightly seated on the shaft?
Do not use force or use metal objects so as not to break the plastic. Try gently warming the center of the impeller with a hairdryer (without overheating the shaft itself) or use a special puller. As a last resort, if the fan shaft is not removable, the entire assembly is replaced.