Beko BCNA306E2S - "Bubbling" when the refrigerator door is closed.

Good day,

I am writing regarding an issue that has been plaguing my refrigerator for some time. I own a Beko BCNA306E2S built-in refrigerator. It was installed in February this year and since about May I have been encountering a problem in that when I close the refrigerator door I hear a sound that most resembles blowing air into a bottle using a straw. This sound varies in intensity, length and volume. It also happens that for several days the problem does not occur at all. I realized most likely this is due to the fact that water does not evaporate from the reservoir at the back of the refrigerator, and when the door is closed, some pressure must be generated that causes this effect. So I inserted through an opening inside the refrigerator compartment, a flexible hose, through which, when it was let all the way into the tank at the back, I sucked out the water that had collected there. This had an effect but for a short time. When the water collects again - the refrigerator "bubbles" again. As I found out from the furniture maker who mounted the refrigerator in the furniture, the back of the niche is not built in and there is still at least 5 cm of free space to the wall, so theoretically air circulation is ensured. Do you perhaps have any idea/solution that would help evaporation of water?

Hallo,this problem can also be with the compressor,if the refrigerator is running,and the door is left open the compressor is turned off,which leads to pressure equalization in the compressor system (which is not harmful)

Perhaps the tube that the water flows into the tank is placed too deep in the tank. Lift it as far as you can so that it is not submerged in condensation. At my place there was also a problem with condensate evaporation and it turned out that this reservoir dislodged from the latches and lifted a few centimeters above the unit, causing it to be underheated and constantly overflowing onto the kitchen floor.

Daper wrote:

As I learned from the furniture maker who installed the refrigerator in the furniture, the back of the niche is not built in and there is still at least 5 cm of free space to the wall, so theoretically air circulation is ensured.

These furniture makers, as a rule, should be killed first and then allowed to do the work.
What's the rub about these 5 cm. Quite that it should be 10 cm (that's how Ikea furniture has), then the space itself does not provide anything except the possibility of spider life.
There must still be an air intake at the front at the bottom and an outlet going along the wall up to the top of the highest cabinet. That is, from the top there must be a "hole" through which from above you can see the floor behind the refrigerator when you shine a flashlight.
As a rule, the top is built in fest, because .... ugly such a hole from the top looks and it is more difficult to fix the cabinet to the wall.
It is through this hole that water vapor from the evaporated condensate can come out, although the main task is to remove heat from the condenser.
Let's hope that this bubbling is only about water, and not about the refrigerant, which is running out...
If such effects were not present before, then this is suspicious.
Check the temperatures with an external thermometer.

Something may be the matter with this free space, because as soon as I removed the lower masking board under the furniture, on the wall where the refrigerator stands the bubbling stopped after one day and has not reappeared so far. I guess I need to work out some more effective way of ventilation.

As I think you lowered the temperature of the condenser, and thus the pressure of the refrigerant in it, and reduced the flow of refrigerant through the capillary so there is less noise.
Contrary to appearances, this also gives a reduction in the refrigerator's power consumption and improves the life of the compressor.
Unfortunately, it can also hide the leakage of refrigerant. Less pressure means less "hiss" "bugs", etc.
It will become apparent over time. Therefore, it is a good idea to get a thermometer with a probe on a cable and check the temperature in the refrigerator part from time to time. The freezer part stops working at the end...compressor.

As user wrote Chupacabra the condensate tube is below the water level in the drip tray. When you open and close the refrigerator door, and there is a low (relatively) temperature in the refrigerator, it creates a vacuum, making the water bubble. There can be many reasons for this. A tube too low, slightly clogged, poor evaporation of water. Sometimes when the tubes were blocked, but the water had an outlet, the coolers whistled.