Refrigerators Pozis with system No Frost are deservedly popular due to their reliability and the absence of the need for frequent manual defrosting. However, even the most advanced equipment requires periodic maintenance, and the question of how to properly defrost such a unit arises for many owners. Most often this is due to scheduled general cleaning, the appearance of an unpleasant odor, or the need to move.
Unlike a drip system, where water flows down the back wall, in models with No Frost ice freezes on a hidden evaporator, which is usually located behind the back panel of the freezer. That is why the defrosting process here has its own technical nuances, ignoring which can lead to breakdown of expensive components. The full cycle of thawing the ice inside the hidden evaporator unit takes from 10 to 24 hours, which is significantly longer than in conventional models.
If you notice that the refrigerator has become less freezing, a humming sound has appeared or a puddle has formed on the floor, this may indicate a malfunction of the water drainage system or sensors. In such cases, simple defrosting is often the first and most effective way to diagnose and fix the problem without calling a technician. Let's look at this process in detail so as not to harm the equipment.
Why does the No Frost system need defrosting?
Many users mistakenly believe that the name No Frost ("no frost") means there is no need to ever turn off the refrigerator from the network. In fact, this technology only automates the process of removing moisture, but does not eliminate it completely. Over time, a coat of ice may accumulate in the drainage channels and on the fan blades, which blocks the circulation of cold air.
If periodic preventative defrosting is not carried out, the compressor begins to wear out, trying to compensate for insufficient cooling. This leads to increased energy consumption and reduced service life unit. In addition, stagnation of water in hard-to-reach places becomes an ideal environment for the growth of bacteria and mold. efficiency of freezing food, even when setting the minimum temperature.
There are a number of signs that indicate that your Pozis “rest” is urgently required:
- ❄️ A noticeable decrease in the efficiency of freezing food, even when setting the minimum temperature.
- 🔊 The appearance of extraneous noise, buzzing or crackling, which was not previously observed.
- 💧 Formation of puddles under the refrigerator or at the bottom of the freezer.
- 🧊 Visible ice build-up on the doors or products, despite the closed chambers.
It is important to understand that the system defrost in refrigerators Pozis is controlled by an electronic module, which can malfunction. Manual defrosting helps reset controller errors and clean the drainage naturally.
Preparation for the defrosting process
Before taking active steps, it is necessary to properly prepare the workplace and the refrigerator itself. This will take no more than 15 minutes, but will save your floor from flooding and your food from spoilage. First, clear the space in front of the unit to ensure easy access to the doors and lower part of the cabinet.
Then you should remove all products. If it’s winter outside, you can take them out to the balcony; in the warmer months, use cooler bags with ice or ask your neighbors to temporarily store supplies. Do not forget to remove all removable shelves, drawers and containers - it is better to wash them separately under running water with a mild detergent.
A critical step is to turn off the power supply. Unplug the cord from the outlet. Do not try to defrost a running refrigerator, as this is not only ineffective, but also dangerous for compressorwhich will try to increase the temperature in the open chamber.
To collect melt water, prepare:
- 🪣 Several deep basins or containers with low sides.
- 🧽 Absorbent rags, sponges or old towels.
- 🧹 A syringe with a long needle or a rubber bulb for cleaning the drainage.
Step-by-step instructions for defrosting Pozis No Frost
The defrosting process itself is technically simple, but requires patience. The main rule here is not to rush things. Mechanical removal of ice is strictly prohibited, as the thin evaporator tubes can be damaged, and then the repair will cost much more than the cost of a new refrigerator.
After you have unplugged the appliance and removed the food, leave the freezer and refrigerator doors completely open. In Pozis models with No Frost access to the main evaporator is closed by a plastic panel. It is not recommended to remove it unless absolutely necessary, as you can break the latches.
☑️ Defrosting algorithm
Water will flow not only from the visible part, but also from the internal channel. To clean the drain hole, locate it on the back wall of the refrigerator (usually above the vegetable rack). Carefully pour in warm (not hot!) water from a syringe or bulb. If the water is standing, it means the channel is clogged.
Then comes the longest stage - waiting.
⚠️ Attention: It is strictly forbidden to use hair dryers, heaters or other heating devices to speed up defrosting. A sharp change in temperature can lead to cracks in the plastic case and deformation of the seals.
During this time, wipe the internal surfaces several times with a rag, removing any draining water. If the ice plug in the drainage does not melt on its own, you can gently (without force) push it through with a special brush or soft wire with a bent end.
How long does defrosting take?
The time required to completely defrost the refrigerator Pozis directly depends on the thickness of the ice formed and the temperature indoors. Unlike older models, where the process took 2-4 hours, the system No Frost requires a longer period to defrost the hidden blocks.
On average, it takes from 10 to 24 hours for ice plugs in the drainage system and on the evaporator to completely disappear. If you defrost the refrigerator preventatively, once every six months, then 8-10 hours may be enough. If there was a lot of ice and the drainage was clogged, it is better to leave the unit turned off for a day.
Factors influencing the duration of the process:
- 🌡️ Temperature in the room: in summer the process will go faster, in winter - slower.
- 🧊 Ice thickness: the more ice, the longer wait.
- 💨 Air circulation: a wide open refrigerator will defrost faster.
Is it possible to speed up the process?
The only safe way to speed up the process a little is to put containers of hot water inside the chambers (in metal bowls) and close the doors for 15-20 minutes, then repeat. But this is risky for plastic, it is better to be patient.
Do not turn on the device until you are sure that the inside is completely dry. Residual moisture can freeze again and block the system, reducing all efforts to zero.
Typical defrosting mistakes
Refrigerator owners often make mistakes trying to save time or acting out of habit with old-style models. These actions can lead to serious damage that are not covered by the warranty.
The most common mistake is using sharp objects (knives, screwdrivers, scrapers) to chip ice. In the system No Frost the evaporator is very close to the walls, and it is easy to break through its aluminum tube. Repair in this case will require replacing the evaporator and refilling with freon.
Comparison of correct and incorrect actions:
| Action | Correct | Dangerous / Impossible |
|---|---|---|
| Removing ice | Natural melting | Chipping with a knife |
| Heating | Warm water in a container | Hair dryer or heater |
| Washing | Soft sponge, special products | Abrasive powders |
| Drainage | Rinsing with a syringe | Pushing hard wire |
Another mistake is turning on the refrigerator immediately after the ice has melted. The internal components must be completely dry, otherwise an electrical short circuit may occur.
⚠️ Attention: Never tilt or invert the refrigerator during defrosting or transport. Oil from the compressor can get into the refrigerant circuit, which will lead to water hammer and motor breakdown.
What to do after defrosting
When you are sure that the inside is dry, clean and there are no ice residues, you can start starting. Wipe all surfaces thoroughly dry with a clean cloth. Replace shelves, drawers and containers, after washing and drying them.
Plug in the refrigerator, but do not load food yet. Let it run idle for 2-3 hours until it reaches operating temperature. Only after this can you add food, distributing it evenly for proper air circulation.
Check the operation of the system: after a few hours it should become noticeably colder inside, and there should be no new frost on the walls. If the refrigerator Pozis works silently and freezes effectively, then the procedure was successful.
To maintain cleanliness, it is recommended to wipe the internal surfaces with a weak soda solution or a special refrigerator cleaner once a month, without waiting for odors to appear.
Frequently asked questions and problems
Even after proper defrosting, questions may arise or a situation may arise where the problem is not resolved. Often, users are faced with the fact that the water stops draining or the ice builds up again after a couple of days.
If the water sits in the pan and does not drain, the drainage hole may be clogged with grease or crumbs. Try rinsing it with warm water with a small amount of baking soda added, using a medical syringe without a needle. If this does not help, you may need to disassemble the rear panel to access the drainage channel.
If after defrosting the refrigerator hums but does not freeze, or freezes weakly, this may indicate a freon leak or a compressor malfunction. It is also worth checking the tightness of the sealing rubber of the door - if it allows warm air to pass through, the system No Frost will not cope.
⚠️ Attention: If after defrosting the alarm indicator lights up or the refrigerator emits intermittent beeps, this may be a defrost sensor error. In such cases, professional diagnostics are required.
Regular maintenance and proper defrosting will extend the life of your Pozis for many years, keeping food fresh and your budget intact.
Is it possible to defrost a refrigerator without unplugging it?
No, this is strictly prohibited. Defrosting is only possible when the power supply is completely turned off. A running compressor will try to compensate for the heat, which will lead to its overload and possible failure.
Why did an unpleasant odor appear after defrosting?
Most likely, bacteria managed to multiply in the drainage system or water pan during the downtime. It is necessary to thoroughly rinse all internal surfaces and drainage with a solution of soda or vinegar, and also replace the carbon filter, if provided by the model.
How often do you need to defrost Posis No Frost?
Manufacturers recommend completely defrosting and washing the refrigerator with the No Frost system at least once a year. If you notice a build-up of ice or deterioration in performance, the procedure should be repeated.
What to do if water leaks onto the floor?
Immediately wipe up the water so that it does not get under the baseboard or on the laminate. Check that the containers are not overfilled. If water constantly flows out from under the refrigerator, check the integrity of the drainage hose and the correct installation of the unit (it must be strictly horizontal).