There are different options for freezing systems. According to some of them, a freezer surrounded by ice is a normal phenomenon. The condensate cools and settles on surfaces. But if ice forms in the freezer compartment of the refrigerator when using the know frost system, then this indicates a violation. The use of the latter involves removing condensate from the freezing compartment.
How does ice form and how to remove it?
How does No Frost work?
This is a fully automated system that eliminates human participation in its operation. Defrosting of the refrigerator occurs according to a calculated algorithm using special mechanisms. The system independently performs defrosting in forced mode. This is done in a hidden way.
At the same time, the freezing compartment is ventilated. Thanks to the presence of a built-in drip device, condensate is constantly removed from the refrigerator, as a result of which it does not leak. Violation of the output mode may cause frost to form on the surfaces of the freezer.
The idea of creating “NoFrost” involves eliminating situations in which ice forms. For this purpose, a special moisture removal technology is used. A heat exchanger is built into the cavities of the side walls. Increased air movement occurs thanks to the built-in fan heater.
During operation, condensate is retained by the heat exchanger, which has a reduced temperature. Due to this, the chamber walls remain dry and clean. The frost that forms on the evaporator is removed in defrost mode. This happens thanks to specialized heating elements.
Using the know frost system in a refrigerator requires taking into account some features of how food should be stored on the part of the owner. Due to the specific nature of the work, in which there is constant movement of air, rapid airing of the stored material will occur. Accordingly, before putting food in the refrigerator, you need to protect it from external influences (i.e., put it in a container or wrap it in film).
Due to the specific nature of the work, in which there is constant movement of air, rapid airing of the stored material will occur. Accordingly, before putting food in the refrigerator, you need to protect it from external influences
Repair of Samsung No Frost freezer when ice freezes
No Frost System
It was precisely designed to prevent ice from freezing on the evaporator, as a result of which we do not lose the efficiency of heat transfer in the freezer. The best way to get rid of ice painlessly is to melt it. To achieve this, a heating element was added to the evaporator, which melted the freezing ice.
If you have read this far, then a reasonable question may well arise: “Why heat the cooling element? Author, what were you smoking?
The principle of operation of the system is as follows: along with the heating element, the manufacturers installed a special sensor on the evaporator, which is responsible for monitoring freezing and the so-called “defrost timer”, hooking up the compressor control electrics to it.
This is the same frost sensor that monitors the appearance of frost on the evaporator. It is very easy to check whether it works or not by testing it. If called correctly, then this is the so-called “thermal relay”. Stinols and indesites use the same thing, the average price is 500 rubles.
There are our production, there are bourgeois ones.
This is the so-called defrost timer. They differ slightly in design, but the principle of operation is absolutely the same. When the thermostat detects freezing, it commands the defrost timer to turn off the compressor and turn on the heating element. The heater turns on for a certain time, melts excess water or ice if it has formed, after which it turns off the heater and turns the compressor back on. Its operation is very easy to diagnose - all defrost timers have a button, when your compressor is running - just press it, the compressor should turn off. If it turns off, the problem is either in the shade or in the sensor. If it doesn't turn off, the problem is most likely with the timer. As a rule, it just changes to a new one. Average price - 500 rubles,
may be more expensive. Again, it all depends on the design and manufacturer.
And this is the defrost heater itself, which is laid along the evaporator. If the relay works and rings, and the defrost timer turns off the compressor during testing, but you still have ice freezing on the evaporator, the problem may be in the shade. Diagnosed by the same dialing. This happens extremely rarely and it simply needs to be replaced.
The average price is 1,000 rubles.
Why does ice form?
One of the likely causes of ice may be a power outage. The mains voltage has gone out, so the refrigerator does not freeze. As a result of downtime, a puddle may appear; the fact that it appears is not always clearly visible and may go unnoticed. After operation is restored, it freezes and ice forms.
Setting the maximum freezing mode can lead to untidy consequences. When you open the door, frost forms, which begins to melt and drip down, resulting in the formation of ice.
To avoid this, it is recommended to keep the freezing temperature at medium. This will not only prevent the occurrence of frost, but will also save some energy. According to the recommendations of most manufacturers. This mode of operation is the most optimal.
When you open the door, frost forms, which begins to melt and drip down, resulting in the formation of ice.
Naturally, opening and closing the door is not the only circumstance leading to the occurrence of icing. The reasons for this phenomenon may include the following:
- Broken door seal. Wear of the rubber seal may result in the door not fitting tightly to the refrigerator body.
- Another reason why ice forms in a refrigerator with the NoFrost system may be clogging of the channels leading water from the heat exchanger with foreign inclusions. Also, one of the pipes could simply have jumped out, as a result of which moisture does not enter it and the movement of water to the container for collecting moisture does not occur.
The container itself is usually located in the same compartment with the motor. Water evaporates from it naturally. The occurrence of icing may be due to the fact that the resulting water does not get to the required place, but is poured into the freezer. There it freezes safely.
- Malfunction of the heating element of the heat exchanger, that is, its combustion. In this case, no one except a service specialist can help.
Important! If the appearance of ice is observed regularly, and the refrigerator is still under warranty, then you should not look for reasons. Moreover, carry out independent repairs. Contact the seller to fix the problem or replace the technical device.
If the appearance of ice is observed regularly, and the refrigerator is still under warranty, then simply return it to the seller - the new refrigerator must work properly
Reasons for the formation of ice in the No Frost freezer
First, let’s look at the most harmless option: when your refrigerator is in perfect order, but a very impressive “coat of snow” is growing in the freezer.
- Super Freeze mode. Modern refrigerators have a fast freezing mode. It is used when it is necessary to quickly freeze a large volume of food. Most often, it turns off on its own after a day, but not in all models. Therefore, if you find ice in the freezer, check whether the “Super Freeze” mode is turned on.
- Incorrect installation. Manufacturers recommend leaving a gap between the sides of the refrigerator (back, sides) and the surrounding furniture/walls of at least 5 cm. And from the top of the refrigerator to wall furniture - at least 10 cm. If you do not maintain the distance, the air will circulate poorly and heat will be removed from rear grille (condenser) of the refrigerator. Cooling performance will deteriorate, which can lead to constant operation and ice formation.
- Incorrect cooling mode. Setting the freezing/cooling temperature lower during hot weather is another common user mistake that leads to ice formation. At a high temperature in the room, heat exchange between the condenser and the environment is already difficult, and with stronger cooling we force it to heat up even more.
If the temperature mode is chosen correctly, the installation is correct, but ice freezes in the No Frost freezer - unfortunately, we are talking about a breakdown.
How to defrost correctly?
Owners of modern refrigerators with a no-frost system note that the defrosting procedure on some models has to be done quite often. To ensure that this procedure does not lead to breakdown of the technical device, it should be carried out correctly:
- The first thing to start with is disconnecting the refrigeration unit from the power source. That is, remove the plug from the socket.
Before defrosting, you will have to turn off the refrigerator, even by unplugging the cord from the outlet.
- The resulting ice may make you want to remove it mechanically: cut it off with a knife or scrape it off with any other hard object. Under no circumstances should this be done.
The wall thickness of the heat exchanger is small. It will not be difficult to cause damage to it by mechanical force. As a result, the problem will develop into a completely different direction. You will have to contact the service department for repairs, which will not be cheap.
- The defrosting process can be accelerated by using a container of warm water. The use of boiling water is excluded. If the water temperature is close to 100 degrees, its impact on the surfaces of the refrigerator can lead to damage. It is recommended to install the container on a woven material or on a board. To quickly dry it, you can use a hairdryer, but first you need to make sure that the heating function is not turned on.
Some refrigerator users are afraid that defrosting them may cause damage. In this situation, you can entrust the procedure to the technical device itself. After the defrosting process is completed, the person will only need to remove excess moisture.
After completing the defrosting process, remove excess moisture by wiping all parts and containers with a soft cloth
Next, you need to wait a while (about half an hour) before returning the products to their places. This is necessary for the refrigerator to return to standard operation. This is most relevant in the warm season.
After completing the defrosting process, remove excess moisture by wiping all parts and containers with a soft cloth
Remember! Refrigerators with “NoFrost” require defrosting only when there are any malfunctions. The main advantage that was pursued when developing the operating process of the system is the absence of the need for defrosting, due to the removal of moisture by the technical device itself.
Additional Operating Notes
- The cooling mode must be selected correctly. A high ambient temperature does not mean that it is necessary to set the freezer to the maximum possible power.
- Placing containers with hot food in the refrigerator may cause the temperature sensor to malfunction. If it is also open, the actively evaporating moisture will lead to the formation of ice. Often, this becomes the simplest cause of ice formation.
Let hot food cool before putting it in the refrigerator
- Do not overload the refrigerator with food. This may cause the compressor to overload. Extreme operating mode will lead to its failure.
Loading the refrigerator too tightly can cause the compressor to overload.
