Many owners of modern kitchen appliances mistakenly believe that the system No Frost completely eliminates the need for defrosting. Indeed, such units do not require frequent shutdown cycles to remove ice from the chamber, but periodic maintenance is still necessary. Built-in models require a special approach due to the complex ventilation system and tight fit to furniture niches.
Ignoring planned maintenance can lead to the appearance of an unpleasant odor, the growth of bacteria and even the breakdown of expensive components. In this article we will analyze in detail why you need to defrost appliances with automatic defrosting, how often to do this and what absolutely cannot be done during the process.
The built-in refrigerator, despite advanced air circulation technologies, remains a complex mechanism. Over time, contaminants can accumulate in hard-to-reach places in the drainage system, which cannot be removed without complete defrosting. Proper care will extend the service life compressor and maintain cooling efficiency.
Why do you need to defrost a refrigerator with a No Frost system
The main misconception lies in the name of the technology. The No Frost system (“no frost”) prevents the formation of an ice crust on products and chamber walls due to constant circulation of dry air. However, the moisture contained in the products does not disappear anywhere. It settles on a hidden evaporator, which is located behind the rear panel.
Periodically, in automatic mode, Heating element (the heating element) turns on and melts the ice on the evaporator. The melt water flows into the drainage tray and evaporates. But this process is not perfect. Microscopic particles of fat, dust and food debris can mix with water and form a viscous substance, which over time clogs the drainage hole.
⚠️ Attention: If you notice that water has begun to accumulate under the vegetable drawers, this is the first signal that the drainage is clogged and a complete defrosting with cleaning of the system is required.
In addition, even in No Frost systems, so-called “snow” deposits can build up on the walls of the evaporator over time if the door is opened frequently or not closed tightly. This reduces heat transfer and forces compressor to work for wear, which leads to increased energy consumption. Complete defrosting allows you to clean hidden cavities from old deposits.
How often do you need to defrost the built-in equipment
The frequency of the procedure depends on the intensity of use of the refrigerator and its operating conditions. For built-in models, the situation is complicated by the fact that they often lack natural ventilation from the sides, which can lead to faster contamination of filters and air ducts.
Appliance manufacturers, such as Bosch, LG or Whirlpoolusually recommend carrying out a complete defrost at least once a year. However, this interval may become shorter. If allergy sufferers or small children live in the house, it is better to carry out hygienic defrosting every 6 months to destroy pathogenic microflora.
There are a number of signs indicating that you should not wait a year:
- 🧊 The appearance of ice in the corners of the chamber or on the doors, despite the operation of No Frost.
- 👃 The appearance of a persistent unpleasant odor that is not eliminated by absorbers.
- 💧 Formation of puddles of water at the bottom of the refrigerator compartment or under the freezer.
- 📉 A noticeable decrease in cooling efficiency or an increase in compressor operating time.
It is important to take into account the seasonal factor. In summer, when air humidity is higher and food spoils faster, the load on the system is higher. Therefore, the end of spring is the optimal time for the first preventative defrosting of the year preventative defrosting.
Preparing for the procedure of defrosting a built-in refrigerator
Built-in appliances have their own specifics: they are tightly fixed in a furniture box. Before starting the process, it is necessary to provide access to the unit and protect the kitchen unit from moisture. Furniture made from chipboard or MDF can swell from water, so precautions here are critical.
The first step is to empty the chambers of food. Prepare cooler bags or bowls of ice in advance to prevent perishable foods from spoiling during the procedure. All removable shelves, drawers and racks must be removed. It is better to wash them separately in the bathtub or shower using warm water and a mild detergent.
⚠️ Attention: Never use hot water to wash glass shelves immediately after removing them from the freezer - sudden temperature changes may cause the glass to burst. Let them warm up to room temperature.
Next, turn off the power supply. Unplug the plug from the socket. In the case of built-in models, the outlet is often located in an adjacent cabinet or behind a decorative plinth. Make sure access to it is not blocked. Now you can start preparing the niche: cover the floor around the refrigerator and the interior space under it (if there is access) with absorbent rags or towels.
☑️ Preparing for defrosting
Step-by-step instructions: how to defrost correctly
The most important stage is waiting. Unlike old models, where the ice was chipped with a knife, modern units with No Frost require natural thawing. This process may take from 10 to 24 hours, depending on the amount of ice and the room temperature.
Leave the refrigerator and freezer doors wide open. For built-in models, this can be difficult due to the hinges of the furniture front. Use special stops or have someone hold the door to prevent it from slamming. If the façade prevents full opening, it can be temporarily dismantled by unscrewing the fastening screws.
Water will flow into the drainage gutter located on the rear wall. If the system drainage works properly, the water will go into the container above the compressor and evaporate. However, if it is heavily soiled, water may overflow over the edge of the gutter. In this case, carefully scoop it out with a syringe, syringe, or absorb it with a sponge so that it does not get on the body.
It is strictly forbidden to use a hairdryer, heaters or other heat sources to speed up the process. Sudden heating can damage the plastic casing, deform seals or break the tightness of pipes. Also, do not try to pick out the ice with a knife or screwdriver - the risk of puncturing the evaporator in the No Frost system is very high, since it is hidden behind plastic. refrigerant. Also, do not try to pick out the ice with a knife or screwdriver - the risk of breaking through the evaporator in the No Frost system is very high, since it is hidden behind plastic.
What to do if the water does not go into the drain?
If you see that the water is standing in the gutter and does not go away, it may be clogged drainage hole. Take a soft wire or a special brush (often included) and carefully clean the channel. You can also use a bulb to pour in warm water under pressure.
After all the ice has melted, you need to thoroughly wipe all internal surfaces with a dry rag. Pay special attention to the corners and joints of the panels where moisture could remain. Only after complete drying can you begin washing.
Care for the drainage system and ventilation
A unique feature of defrosting a built-in refrigerator is the need to check hidden systems. In models No Frost the condition of the ventilation ducts through which cold air enters the chamber is critically important. If they are clogged with dust or ice, performance will decrease.
Use a soft brush or cotton swab to clean the drainage hole. You can make a disinfectant solution by mixing warm water with a small amount of baking soda or vinegar. Pour the solution into the hole and wait for it to drain. This will help dissolve fatty plugs that often form at the bottom of the tube.
| System element | Check frequency | Cleaning method | Tool |
|---|---|---|---|
| Drainage hole | Every defrosting | Washing with warm water | Syringe or pear |
| Ventilation grilles | Once a year | Blowing and wiping | Dry brush |
| Door seals | Monthly | Wipe with soapy water | Soft sponge |
| Rear grille (outside) | Once every six months | Dust removal | Vacuum cleaner |
Also inspect the rubber seals on the doors. Built-in refrigerators often have more massive facades, which create additional stress on hinges and rubber. Wipe them with a weak solution of vinegar or a special rubber cleaner to maintain elasticity and tightness.
Starting after defrosting and typical errors
When all surfaces washed and, most importantly, completely dried, you can put the shelves and drawers in place. Make sure all fasteners are latched. Now plug in the refrigerator. Do not rush to load products right away.
Let the equipment run idle for at least 2-3 hours. During this time compressor the required amount of refrigerant will be collected into the system, and the temperature will stabilize. Only after reaching the set temperatures can you add food.
⚠️ Attention: If, after turning on, the refrigerator makes unusual sounds (loud humming, gurgling) or does not turn off for more than 5-6 hours, immediately turn it off and contact the service. Perhaps moisture has entered the system or the seal is broken.
A common mistake is to ignore the rules for installing a built-in model. Make sure that the ventilation gaps in the furniture (usually the base and the top of the box) are not blocked. To work No Frost requires free inflow and outflow of air around the body.
Following these simple rules will allow your equipment to serve for many years without loss of performance. Regular defrosting is not a relic of the past, but a necessary hygienic procedure for any refrigeration equipment.
Is it possible to wash a refrigerator with soap?
Using ordinary laundry soap is not recommended, as it leaves a film and odor. It is better to use special household appliance products or a solution of baking soda (1 tablespoon per liter of water).
How long does it take to completely defrost a built-in refrigerator?
The time depends on the volume of ice and the temperature in the room. On average, the process takes from 10 to 24 hours. Do not speed up the process with a hairdryer, this is dangerous for the plastic and evaporator tubes.
Is it necessary to defrost a No Frost refrigerator if there is no ice?
Yes, it is necessary. Defrosting is necessary not only to remove ice, but also for hygienic treatment, cleaning the drainage system from bacteria and checking the operation of the ventilation ducts.
What to do if a smell appears after defrosting?
Most likely, there are organic residues left in the drainage tube. Try flushing the drainage with a solution of vinegar or citric acid. Also check if there is any water left in hard-to-reach corners under the casing.
Is it possible to turn on the refrigerator immediately after washing?
No. The internal surfaces and especially the electrical contacts must be completely dry. Switching on a wet appliance may cause a short circuit. Wait at least 2-3 hours after completing wet cleaning.
Why does water pour onto the floor in a built-in refrigerator?
This is a sign of a clogged drainage hole or an overflowing drainage tray. It is also possible for the refrigerator to become misaligned, causing water to not flow into the gutter. It is necessary to clean the drainage and level the equipment.