Modern refrigeration units of the brand DON are famous for their reliability and durability, however, even the most advanced equipment requires periodic maintenance. Many owners mistakenly believe that the presence of an automatic defrosting system completely eliminates the need for manual intervention, but this is not entirely true. In some situations, for example, during a long power outage or severe contamination of the drainage channels, the formation of an ice crust becomes inevitable.
Correct defrosting the refrigerator is not just removing ice, but an important procedure that extends the life of the compressor and maintains heat transfer efficiency. Ignoring ice can lead to the doors no longer closing tightly, and the load on the engine will increase significantly. In this material we will analyze in detail all stages of the process, focusing on the specifics of the models DON.
You should not wait until the layer of ice becomes visible to the naked eye. Regular maintenance allows you to avoid unpleasant surprises in the form of leaks on the floor or the appearance of foreign odors. Next, we will look at an action algorithm that will protect your equipment and keep food fresh.
⚠️ Attention: Before starting any maintenance work, make sure that you have disconnected the device from the power supply. Working with electrical appliances in a wet state is strictly prohibited by safety regulations.
Preparing for the defrosting process
The first and most important step is to clear the internal space of food. You need to lay out all the contents of the chambers on the prepared surface. If it's winter outside, you can use the balcony, but make sure that the food is not in direct sunlight. For the summer period, it is better to prepare several containers with ice or use thermal bags.
After the chambers are empty, it is the turn to remove all removable elements. Shelves, vegetable drawers, egg trays and door baskets all need to be removed. Glass shelves cannot be washed with hot water immediately after the freezer, as sudden temperature changes can cause them to crack. Let them sit at room temperature for at least 10-15 minutes before contacting water.
Now you need to turn off the power. Find the power cord and unplug it from the outlet. In some models DON access to the outlet may be difficult if the equipment is built into the kitchen unit. In this case, make sure that you can safely reach the power source without damaging furniture or wiring.
Prepare a place to collect melt water. Despite the presence of a moisture removal system, during intensive defrosting the drainage may not cope with a large volume of liquid. Place old towels, rags, or flat trays on the floor around the refrigerator. This will save your floor covering from swelling and damage.
Natural defrosting versus accelerated methods
There are two main approaches to removing ice: natural and forced. Equipment repair specialists DON strongly recommend using only the natural method. It takes longer (from 3 to 24 hours depending on the thickness of the ice), but is absolutely safe for the internal components of the unit.
During natural defrosting, the ice melts under the influence of room temperature. This process does not create stressful loads on the evaporator and the plastic elements of the case. Thermal shockwhich occurs when using a hairdryer or hot water can lead to microcracks in the freon tubes or deformation of the plastic.
If time is running out and you need to speed up the process, you can use a fan. Direct a stream of room temperature air into the open compartment of the refrigerator. This will increase air circulation and speed up the melting of ice without the risk of damaging parts. Do not use heaters or heat guns - they can melt the seals.
Let's look at a comparison of methods in the table so that you can choose the best option for your situation:
| Comparison parameter | Natural defrosting | Use hairdryer | Hot water |
|---|---|---|---|
| Safety for plastic | High | Medium (risk of overheating) | Low (risk of cracks) |
| Process time | Long (up to 24 hours) | Fast (30-60 min) | Medium (1-2 hours) |
| Risk for the compressor | Absent | Minimum | Average |
| Manufacturer's recommendation | Yes | No | No |
⚠️ Attention: Never use sharp objects (knives, screwdrivers, scrapers) to chip ice. One awkward movement can puncture the evaporator, which will lead to a freon leak and expensive repairs.
Specifics of defrosting the No Frost system in DON
Owners of models DON with the system No Frost are often surprised to find ice inside the chamber. Theoretically, such a technique should not become overgrown with frost, since moisture is removed automatically. However, if you see ice, this is a signal of a malfunction or improper operation.
Most often the problem lies in a clogged drainage hole. In models DON it can be located on the back wall or under the bottom drawer. If the channel is clogged with food debris or dust, the condensation does not go away, freezes and turns into an ice block. In this case, defrosting is needed not so much to remove ice as to clean the system.
To clean the drainage, use a soft wire or a special brush. Carefully push it into the hole, being careful not to damage the inner walls of the channel. After mechanical cleaning, rinse the drainage with warm water from a syringe or syringe without a needle. Make sure that water flows freely into the evaporation tray.
Why does ice form in No Frost?
Ice in the No Frost system is formed due to a leak in the seals, a breakdown of the defrost heating element, or a malfunction of the timer. If, after defrosting and cleaning, ice appears again within a week, you need to call a technician to diagnose the electronics.
It is also worth checking the condition of the rubber seal on the door. If it does not fit tightly, warm, moist air constantly enters the chamber, which instantly condenses and freezes. Wipe the rubber band with a soft cloth and check for any creases or cracks.
Removing water and cleaning internal surfaces
When the main body of ice has melted, it is necessary to remove the water. Refrigerators DON often have a special groove for draining water to the evaporator, but if the ice is thick, it can overflow. Use a soft, absorbent rag or sponge to collect any remaining moisture from the bottom of the chamber.
After the water has been removed, the washing stage begins. Use a weak solution of baking soda or a special refrigerator cleaner. Aggressive chemistryAbrasive powders and chlorine-containing substances are prohibited, as they can damage the plastic coating and leave an unpleasant odor that will be absorbed into the food.
Wipe everything thoroughly surfaces, including corners and places where shelves are attached. Pay special attention to door handles and the inside of the door - this is where the most bacteria accumulate. After wet cleaning, be sure to wipe all surfaces dry with a clean cloth.
Do not forget to rinse and dry all previously removed shelves and drawers. Return them to their place only after they are completely dry. Wet shelves may freeze to the walls when first turned on, which will make it difficult to remove them in the future.
Starting the refrigerator after defrosting
The final stage is the correct startup of the equipment. Many people make the mistake of downloading products immediately after turning them on. The compressor DON needs time to reach operating temperature and stabilize the pressure in the system. On average, this process takes from 2 to 4 hours.
Plug in the refrigerator and leave it empty. Doors must be tightly closed. After a couple of hours, check the internal temperature - it should drop to values close to operating values. Only after this can you gradually load the products.
☑️ Startup checklist
If you notice that after turning on the refrigerator makes unusual sounds (gurgling, loud humming), do not panic. This may be due to refrigerant circulation after a period of inactivity. However, if the noise does not stop during the day, you should contact a service center.
It is also important to check the operation of the water drainage system during the first hours of operation. Make sure there are no puddles under the refrigerator and no new condensation is forming inside the compartments. This will guarantee that defrosting and cleaning were successful.
Prevention and frequency of maintenance
How often should you defrost the refrigerator DON? For models with manual defrosting or a drip system (“crying wall”), it is recommended to carry out the procedure 1-2 times a year. If you notice that the layer of frost on the back wall exceeds 5-7 mm, this is a signal to action.
For the system No Frost full defrosting is required less often, about once a year, rather for hygienic purposes. However, as mentioned earlier, when ice is detected in such models, you need to look for the cause, and not just remove the consequences.
Following simple operating rules will help reduce the frequency of defrosting:
- 🍲 Do not put hot foods inside - this creates excess moisture.
- 🚪 Do not keep the door open for longer required time.
- 🧊 Do not fill the chamber with food too tightly, air must circulate.
- 🧹 Regularly check the cleanliness of seals and vents.
⚠️ Attention: Design and maintenance requirements may vary slightly depending on specific series of refrigerator DON. Always check the official user manual supplied with your model, especially in the sections relating to electrical safety and refrigerants.
Frequently asked questions (FAQ)
Is it possible to defrost a DON refrigerator with a hairdryer?
The use of a hairdryer is not recommended by manufacturers. The hot air flow can heat the plastic unevenly, causing it to deform, or damage the thin evaporator tubes. It’s better to be patient and use the natural method or a fan with cold air.
How long should the refrigerator sit after defrosting before turning it on?
A special “settling” time is not required for modern models, unless you used a large amount of water to speed up the process. The main thing is to wipe all surfaces dry. However, letting the appliance sit for 15-20 minutes before plugging it in will be a good practice to stabilize the temperature of the components.
Why does the refrigerator take a long time to reach temperature after defrosting?
This may be due to several factors: loading warm food, a loose door fit, a malfunctioning thermostat, or a lack of refrigerant. If the temperature does not drop within 5-6 hours, check the operation of the compressor and the tightness of the door.
Do you need to wash the inside of the refrigerator after each defrost?
Yes, this is necessary. Melt water mixes with dust and microparticles of food, creating an ideal environment for the growth of bacteria. Hygienic treatment with a weak soda solution or a specialized product is required.