The situation in the refrigerator the sound of flowing water is heardoften causes confusion among owners of modern equipment. Many users first encounter such acoustic effects immediately after purchasing a new unit or, conversely, notice their appearance after several years of operation. In most cases, these sounds do not indicate a breakdown, but are a consequence of physical processes occurring inside the cooling system.
However, it is impossible to ignore gurgling or murmuring completely, since in some cases they can signal the beginning of pathological processes in the circulation system refrigerant or condensate drain. Understanding the nature of these sounds will help you distinguish normal operation of the equipment from a situation that requires the intervention of a specialist. Let's take a closer look at why such noise occurs and what to do about it.
Modern models of refrigerators, especially those equipped with a system No Frostoperate in complex cycles, including phases of active cooling and automatic defrosting. It is at these transition moments that the characteristic noise of flowing liquid most often appears. It is important to learn to differentiate normal sounds from signs of malfunction, so as not to spend extra money on calling a specialist where this is not necessary.
Physics of the process: refrigerant circulation
The main reason for the appearance of sounds reminiscent of flowing wateris the movement of refrigerant through the tubes of the evaporator and condenser. In a closed circuit of the cooling system, freon constantly changes its state of aggregation, moving from liquid to gaseous and back. This process is accompanied by a characteristic gurgling overflow that is clearly audible in silence.
The circulation sound is especially loud immediately after the compressor is turned on or at the moment it stops. At this time, the pressure in the system changes sharply, and the liquid begins to actively move through the capillary tube. If your refrigerator has just defrosted and you turned it on, murmuring can be very intense in the first hours of operation.
⚠️ Attention: If the sound of flowing water is accompanied by a complete absence of cold in the chambers, this may indicate a freon leak or capillary blockage systems. In this case, operation of the device is useless.
The intensity of the noise directly depends on the amount of refrigerant pumped into the system and the design of a particular unit. On some models with a bottom-mounted compressor, the sound may resonate with the cabinet and become amplified. This is not a defect, but rather a design feature of the model.
How long does the refrigerant circulate?
The refrigerant moves through the system continuously while the compressor is running. However, the sound of flowing becomes audible only at certain points in the cycle, when the pressure reaches certain values, or immediately after stopping the motor, when the gas continues to move by inertia.
No Frost system and condensate removal
In refrigerators with a system No Frost the sound of flowing water is often associated with the operation of the melt water removal system. During the automatic defrosting process, the evaporator heats up and the ice frozen on it turns into water. This moisture flows through special grooves into the drainage hole, producing characteristic splattering sounds.
Water enters a special container (bath) located above the compressor. Under the influence of heat from a running motor, this water evaporates. The evaporation process may also be accompanied by hissing or quiet murmur. If you hear something in the refrigerator as if something is leaking a few hours after turning it on or off, most likely this is the condensation drain cycle.
- 💧 The sound of water flowing into the drain usually lasts from 2 to 10 minutes.
- 🔥 Evaporation of moisture above the compressor can occur cyclically during the entire period of inactivity of the motor.
- ❄️ The frequency of sounds depends on the humidity in the chamber and the frequency of opening the doors.
It is important to monitor the condition of the drainage hole. If it is clogged with food debris or ice, the water may not have time to escape, accumulate and create louder and more disturbing sounds when trying to push the plug with air. Regular hygiene refrigerator will prevent the formation of blockages.
Freezing and thawing: operating cycles
Another source of sounds reminiscent of liquid flow, - These are the processes of freezing and thawing of moisture in various components of the refrigerator. When the temperature changes sharply, the plastic elements of the housing, metal shelves and evaporator tubes expand or contract. This can cause a crackling sound, which is sometimes disguised as the sound of flowing water.
This is especially true for models with freshness zone or a zero chamber, where a specific temperature regime is maintained. Moisture condensing on the walls of these compartments can freeze and flow off in jerks, creating intermittent noise. If you notice that the sound appears strictly at certain time intervals, this confirms the theory of cyclical processes.
In winter, when the refrigerator operates in an unheated room or on the balcony, the cycles may get lost. The compressor works longer, and the defrosting process may not proceed correctly, which leads to the accumulation of ice and the subsequent loud flow of large masses of water. Temperature conditions operation directly affects acoustic comfort.
⚠️ Attention: Operating the refrigerator at ambient temperatures below +10°C (if this is not provided for by the climate class) can lead to solidification of the oil in the compressor and incorrect operation of the defrost system.
Diagnostics: normal or malfunction?
To understand whether the sound of flowing water is a sign of a breakdown, it is necessary to carry out an initial diagnosis. A quiet, periodic gurgling sound that is not accompanied by other alarming symptoms is considered normal. If the noise becomes loud, constant or changes its character, you should listen more carefully.
Pay attention to the temperature in the chambers. If the refrigerator continues to freeze, the food does not spoil, and there is no excess ice on the walls, then most likely the equipment is working properly. Problems with refrigerant circulation or fan operation usually immediately affect the quality of cooling.
| Sound type | Probable cause | Status | Actions |
|---|---|---|---|
| Quiet gurgling | Freon movement | Normal | Do nothing |
| Water splash | Condensate drain | Normal | Check the cleanliness of the drain |
| Loud bubbling + no cold | Freon leak | Accident | Call a technician |
| Sound of a flowing stream | Drainage clogged | Care required | Clean the hole |
It is also worth checking the installation level of the refrigerator. If the unit is not level, the water in the drainage bath may splash from the vibration of the compressor, creating the false impression that something is leaking inside. Use a building level to check the horizontal level.
Instructions: cleaning the drainage hole
If you determine that the sound of running water is too intense or is accompanied by the appearance of puddles under the vegetable boxes, the drainage hole is most likely clogged. Cleaning it is a simple procedure that you can do yourself without calling a specialist.
First you need to empty the lower part of the refrigerator compartment. Remove shelves and drawers to gain access to the back wall. Find a small hole, often covered with a decorative plug. It is through this that moisture leaves.
- 🧹 Take a special brush (often included) or soft wire.
- 💧 Carefully insert the tool into the hole and make several rotational movements.
- 🚿 Rinse the canal with warm water using a medical syringe or syringe.
After cleaning, check the patency of the canal by pouring a small amount of water into it. It should quickly and silently go into the pan. Regular maintenance will help avoid the appearance unpleasant odor and mold, which often develop in stagnant water.
☑️ Cleaning the drainage
When you need to call a technician
There are situations when the sound of flowing water in the refrigerator cannot be ignored. If other symptoms are added to the acoustic effects, this may indicate a serious malfunction that requires professional repair and the use of specialized equipment.
First of all, the lack of cold should cause alarm. If the compressor is running non-stop, trying to get up to temperature, but the inside is warm, this is a sign of a refrigerant leak. In this case, the “gurgling” may be the sound of gas escaping through a depressurization area or the movement of a mixture of oil and freon.
It is also worth contacting a specialist if:
- 🔊 The sound has become metallic or is accompanied by strong vibration of the case.
- 💨 Warm air is blowing from the refrigerator, although the motor buzzes.
- 🧊 A large “coat” of ice has formed on the back wall, preventing the doors from closing.
⚠️ Attention: An independent attempt to refuel with freon or solder pipes without a license and equipment is prohibited and hazardous to health. Refrigerants can be toxic or flammable.
Timely contacting a service center will help avoid costly compressor repairs. If the system is clogged with oxidation products (black deposits), a major flushing of the circuit will be required, which cannot be done at home.
Why does the refrigerator gurgle only at night?
At night, the level of background noise in the apartment decreases, and you begin to hear the sounds of equipment that were masked by household noise during the day. In addition, at night the refrigerator may turn on more often if the room becomes cooler or, conversely, hotter (depending on the season and heating operation), which changes its operating modes.
Can the sound of water mean that the refrigerator is empty?
Yes, indirectly. Chambers full of food absorb sound waves better. In an empty refrigerator, the sounds of refrigerant circulation and fans resonate more strongly. Loading the chambers with products acts as additional sound insulation.
Does level installation affect the sound of water?
Yes, it does. If the refrigerator is askew, the water in the drain pan above the compressor may splash as the motor vibrates, creating a sound similar to running water or rain. Adjusting the legs helps eliminate this effect.
Is gurgling dangerous for new refrigerators?
For new refrigerators this is absolutely normal. In the first weeks of operation, the system “grinds in”, oil is distributed, and sounds may be more pronounced. Over time, they usually subside or become less noticeable to the ear.
What to do if the sound appears after defrosting?
If the sound appears immediately after defrosting, this is a good sign - the defrosting system is working. Let the refrigerator run for several hours. If the sound does not stop for a day and is accompanied by ice, check the drainage for freezing.