How to clean channels in a refrigerator: drainage, ventilation and condensation

Clogged channels in the refrigerator are one of the most common causes of water accumulation under vegetable drawers, unpleasant odors, or even compressor failure. Many users ignore this problem for years until it leads to costly repairs. In fact cleaning drainage and ventilation channels is a simple procedure that can be performed independently in 20-30 minutes, without the help of a specialist.

In this article we will look at which channels require cleaning (and why they become clogged), what tools are needed for working with models Samsung, LG, Indesit and others, and we will also give step-by-step instructions with photos and videos. We will pay special attention hidden consequences of blockageswhich are not written about in standard manuals - for example, how this affects energy consumption and the service life of seals.

Which channels in the refrigerator need to be cleaned and why they get clogged

Modern refrigerators have three types of channels that require regular maintenance:

• 🔹 Drainage hole - located on the back wall of the chamber (usually under the evaporator). Condensate flows here, which is then discharged into a special tray. Clogs due to crumbs, food particles and mold.
• 🔹 Ventilation ducts —present in models with the system No Frost. They distribute cold air between the chambers. They become clogged with dust, grease and ice build-up.
• 🔹 Capillary tube - a thin channel in the cooling system. It rarely gets clogged, but if it does (for example, due to oil or moisture), professional repair is required.

The main causes of blockages:

• 🍎 Products without packaging —fruits, vegetables and herbs release moisture and small particles that fall into the drainage.
• 🧊 Improper defrosting —if the ice melts too quickly, the pieces can block the hole.
• 🦠 Mold and bacteria —in the warm drainage environment they multiply at lightning speed, forming mucus plugs.

Interesting fact: in refrigerators with Low Frost (for example, Beko or Gorenje) the drainage becomes clogged less often than in models with a drip system, but the ventilation ducts require cleaning more often due to the circulation characteristics air.

Signs of clogged channels: when it’s time to act

The blockage is not always visible to the naked eye. Pay attention to these indirect signals:

• 💧 Water under the vegetable boxes a classic sign of clogged drainage. The liquid does not go into the pan and accumulates inside.
• ❄️ Ice on the back wall (in models No Frost) - indicates a violation of air circulation.
• 👃 Unpleasant odor - even after washing the refrigerator. The source often lies in the mucous plug of the drainage channel.
• ⚡ Increased energy consumption - the compressor works longer, trying to compensate for impaired heat exchange.

If you notice at least one of these signs, do not delay cleaning. In advanced cases, a blockage can lead to:

• 🔥 Overheating of the compressor (and its breakdown).
• 🧊 Formation of an ice "coat" on the evaporator.
• 🦟 The appearance of midges (drosophila), which The larvae lay in dirty drainage.

⚠️ Attention: If after cleaning the channels the refrigerator still does not cool or makes unusual sounds (for example, gurgling), the problem may lie in freon leak or a malfunction of the thermostat. In this case, diagnostics by a specialist is required.

Preparation for cleaning: tools and safety measures

To clean the channels you will need:

Before starting work:

1. Unplug the refrigerator (pull the plug out of the socket!).
2. Take out all the food and shelves (especially the bottom drawers).
3. If there is ice in the refrigerator, let it melt naturally (do not use a hair dryer or hot water!).

⚠️ Attention: Never use metal objects (needles, knitting needles, knives) for cleaning. They can damage the plastic channels or puncture them. evaporator, which will lead to freon leakage and expensive repairs.

Disconnect the refrigerator from the mains|Remove all products|Take out shelves and drawers|Prepare tools|Wipe the internal surfaces-->

Step-by-step instructions: how to clean the drain hole

The drainage hole is the most vulnerable place in refrigerators with a drip system (Atlant, Samsung RL, Indesit etc.). It must be cleaned every 3-6 months.

Step 1. Find the hole.

It is located on the back wall of the refrigerator. chamber, usually in the center under the evaporator (plastic “grid”). In some models (for example, LG GA-B489), the hole is covered with a small plastic plug.

Step 2. Clean mechanically.

Insert a plastic tube or toothpick into the hole and gently twist it 2-3 times. Do not press too hard - the canal may go at an angle!

If the blockage is deep, use a wire with a curved end (with a diameter of no more than 1 mm), move it 5-7 cm deep with rotating movements.

Step 3. Rinse the canal.

Fill the syringe with warm water (you can add vinegar - 1 tablespoon per 200 ml) and sharply inject it into the hole. Repeat 3-4 times. The water should flow freely into the pan (it is located on the back wall of the refrigerator outside).

Step 4. Check the result.

Pour 50 ml of water into a glass and pour it into the drainage hole. If the liquid drains quickly and without delay, the blockage has been removed. If the water stands still or drains slowly, repeat the flushing.

What to do if the water does not drain even after cleaning?

If flushing does not help, the blockage may be deeper - in tube leading to the pan. In this case:

1. Move the refrigerator away from the wall and find the pan (usually at the bottom back).

2. Remove the pan and check if the drain tube is clogged (you can blow it out with compressed air or wash it with a long flexible brush). data-i="151">3. If the tube is damaged, it will have to be replaced (this is done by the technician).

3. If the tube is damaged, it will have to be replaced (this is done by the technician).

Cleaning ventilation ducts in No Frost refrigerators

Models with the system No Frost (Samsung RB, Bosch KAN, Liebherr) do not require defrosting, but their ventilation ducts become clogged with dust and grease. This leads to:

• 🌡️ Uneven cooling (in one corner +8°C, in the other +2°C).
• ❄️ Icing evaporator (the refrigerator begins to "make noise" as during normal defrosting).
• 💨 Weak air circulation - food spoils faster.

How to clean:

1. Turn off the refrigerator and remove all shelves.
2. Find the ventilation grilles - they are located on the back wall (sometimes covered with a decorative panel).
3. Remove the grilles by carefully prying them with a plastic spatula or a knife with a rounded end.
4. Vacuum the channels using a narrow nozzle (set the power of the vacuum cleaner to minimum!).
5. Wipe the fan blades with a cotton swab dipped in alcohol.
6. Install the grilles and check the operation of the refrigerator (it should work more quietly).

In models Samsung with technology Twin Cooling Plus (two separate cooling systems) ventilation ducts are cleaned separately for the refrigerator and freezer compartments.

⚠️ Attention: If after cleaning the fan still does not rotate or makes a grinding noise, do not try to disassemble it yourself. The bearings are probably worn out or the winding is burnt out - this requires replacing the part.

How to clean the capillary tube and other hidden channels

The capillary tube is a thin copper channel through which freon circulates. Normally, it should not become clogged, but sometimes moisture, oil or small particles get into it after unqualified repairs. Independent cleaning of the capillary tube is almost impossible - this requires a special tool (hydraulic press) and experience.

However, you you can indirectly diagnose the problem by the following signs:

• 🔥 The refrigerator runs non-stop, but does not cool.
• 🧊 The condenser (grid at the back) remains cold.
• 💧 Oil stains are visible on the tubes (freon leakage).

If you suspect a clogged capillary tube:

1. Check whether the pipeline is kinked (sometimes this happens when transporting a refrigerator).
2. Inspect the compressor - if it is too hot, this confirms the problem.
3. Call a technician. Cleaning the capillary system requires evacuation and charging with freon.

In refrigerators with linear compressor (for example, LG Inverter Linear) clogged capillary tube is less common, but the consequences are more serious - the electronic control unit may burn out.

Prevention of blockages: how to avoid repeated problems

To make the channels in the refrigerator clog less often, follow these rules:

• 📦 Store food in containers - especially fruits, vegetables and liquid dishes (soups, sauces).
• 🧼 Wash the refrigerator every 2-3 months —use a soda solution (2 tbsp per 1 liter of water) or special products (Electrolux E6RCS104).
• ❄️ Defrost according to the rules:
  • Do not chip the ice with a knife.
  • Do not use a hair dryer (temperature changes can damage the seals).
  • Wipe the walls dry after the ice melts.
• 🔄 Check the drainage hole once a quarter - even if there are no visible problems.

For models No Frost additionally:

• 🌬️ Do not place food close to the ventilation grilles.
• 🧴 Wipe the grilles every six months with a damp cloth with an antibacterial agent.

Common mistakes when cleaning refrigerator channels

Even experienced users sometimes make mistakes that aggravate the problem. Here's what cannot be done.:

• 🚫 Use aggressive chemicals (for example, Domestos or Whiteness). It corrodes plastic and rubber seals.
• 🚫 Clean the channels with sharp objects - needles, knitting needles or metal wire can pierce the drainage tube.
• 🚫 Ignore the condensate tray. It also needs to be washed - dirt accumulates there and bacteria multiply.
• 🚫 Turn on the refrigerator immediately after cleaning. Let it stand for 30-60 minutes so that the moisture evaporates.

Another common mistake is cleaning only the drainage hole, without attention to the ventilation ducts (in models No FrostThis leads to icing of the evaporator and increased load on the compressor.

If after cleaning the refrigerator begins to operate louder or a new noise appears (for example, gurgling), You probably damaged the pipeline or the position of the fan is off. In this case, it is better to call a technician.

⚠️ Attention: In refrigerators with electronic control (Samsung Family Hub, LG Instaview), after cleaning, the calibration of the sensors may be lost. If the temperature is displayed incorrectly, reset the settings (instructions are in the user manual). data-i="231">Attention:

FAQ: Answers to frequently asked questions

Is it possible to clean the ducts without unplugging the refrigerator?

No. Any manipulations with drainage or ventilation require a complete power outage. Otherwise, there is a risk of electric shock (especially when working with metal ones). tools) or a short circuit (if water gets on the electronics).

How to rinse the drainage hole if there is mold there?

Effective means:

• 🍋 Citric acid solution (3 tbsp per 1 liter of water).
• 🧪 Vinegar 9% (undiluted).
• 🧴 Special antibacterial sprays for refrigerators (Top House, Unicum).

After rinsing, be sure to rinse the channel with clean water!

Why is there still water after cleaning the drainage accumulates?

Possible reasons:

• Clogged in drain tube (it goes from the drain hole to the pan).
• Incorrect the slope of the refrigerator (it should be slightly tilted back so that the door closes tightly).
• Damaged seal doors - because of this, moisture condenses more strongly.

How often should you clean the ventilation ducts in No Frost?

Recommended frequency:

• 🏠 Under normal conditions - once every 6-12 months.
• 🐶 If there are animals in the house (lots of wool) - once every 3-4 months.
• 🍳 If the refrigerator is located next to the stove - once a quarter (grease and soot clog the channels faster).

Is it possible to use a steam generator to clean the channels?

No! Steam under pressure can:

• Deform. plastic parts.
• Damage thermal insulation.
• Lead to corrosion of metal elements (in models with an open evaporator).

For disinfection it is better to use ultraviolet lamp (if it is included) or antibacterial napkins.