Modern refrigerators with the system No Frost have become a standard in the kitchen, saving owners from grueling manual defrosting every couple of weeks. However, there comes a time when the equipment needs to be turned off: be it moving, a long trip, repairs, or seasonal storage in the country. Many people mistakenly believe that a “smart” system completely frees them from the need to monitor the condition of the evaporator, but this is a misconception. Incorrect shutdown of the unit can lead to the appearance of mold, an unpleasant odor, or even failure of the compressor the next time it is started. Unlike older models with a drip system, this one has its own nuances of preparing for downtime. In this article, we will look in detail at how to safely de-energize equipment, whether it needs to be defrosted, and how to preserve it for long-term storage.
Incorrect shutdown No Frost the unit can lead to mold, an unpleasant odor, or even failure of the compressor the next time it is started. Unlike older models with a drip system, this one has its own nuances of preparing for downtime. In this article, we will look in detail at how to safely de-energize equipment, whether it needs to be defrosted, and how to preserve it for long-term storage.
Following the correct algorithm of actions will save the life of the equipment and avoid costly repairs. You will learn why you can’t just unplug the cord from the socket and immediately close the doors, as well as how to prepare the internal chambers for a long-term absence of electricity.
Why it is important to follow the shutdown rules
The system No Frost ("no frost") involves automatic removal of moisture, but this does not mean the complete absence of water in the structure. Condensation can accumulate in the evaporator tray, which is hidden behind the rear panel. If you suddenly turn off the device and leave it closed, this moisture will become an ideal environment for the growth of bacteria and fungi.
In addition, the compressor contains oil that must return to the crankcase. If you begin transporting or tilting the unit immediately after turning it off, oil may enter the refrigerant circuit. This creates a risk of formation hydraulic hammer when restarted, which often leads to motor breakdown.
⚠️ Attention: It is strictly forbidden to transport or store the refrigerator in a horizontal position immediately after operation. The compressor needs time to stabilize the oil, otherwise repairs will cost more than new equipment.
It is also worth considering the condition of the rubber seals. With a sudden change in temperature or prolonged inactivity without ventilation, the rubber may lose elasticity or become covered with microcracks. Proper preparation helps keep the chambers sealed for many years.
Preparing to turn off: step-by-step plan
Before you press the shutdown button or pull out the cord, you need to perform a number of preparatory steps. This applies not only to the extraction of products, but also to the adjustment of temperature conditions. If you have a model with Smart functions, first turn off the fast freezing modes.
Start by emptying the chambers of food. All perishable goods should be consumed, given away or thrown away. It is better to transfer frozen semi-finished products to thermal bags if the break in work is long. It’s too early to wash empty shelves - first you need to wait for defrosting.
- 🧊 Remove all glass and plastic containers so that they do not burst due to temperature changes.
- 🍖 Remove all products, including those in door niches and on side shelves.
- 🔌 Check the integrity of the power cord before disconnecting from the power supply.
- 📏 Clear space around the refrigerator for easy access to the back wall.
It is important to let the equipment “rest” before turning it off. If the refrigerator has just been actively freezing, let it idle for 10-15 minutes with the door open (if room temperature allows) to equalize the pressure in the system. Although this is less critical for modern inverter compressors, for older models this procedure is useful.
The process of defrosting the No Frost system
Many users are surprised, but No Frost still requires defrosting during a long shutdown. Despite the name, ice can form on a hidden evaporator, especially if there have been problems with the defrost system or seals.
After unplugging, leave the refrigerator and freezer doors open. It takes time for the system to completely defrost. Depending on the room temperature, the process may take from 4 to 24 hours. Do not try to speed up the process by using a hairdryer or hot water - this may damage the plastic elements and tubes.
| Defrosting stage | Duration | User actions |
|---|---|---|
| Start defrosting | 0–2 hours | Open the doors, lay rags on the floor |
| Active melting | 2–6 hours | Collect water, wipe the trays |
| Drying | 6–24 hours | Aeration, removing residual moisture |
| Final check | 24+ hours | Checking the dryness of the evaporator and drainage |
Water will drain into a special drainage tray, usually located above the compressor at the rear. Make sure the tray is not overfilled and, if necessary, carefully remove excess liquid with a syringe or sponge. The main thing is to ensure complete disappearance of moisture inside the hidden channels.
⚠️ Attention: Never use sharp objects (knives, screwdrivers) to chip ice inside the chambers. Damage to the evaporator tubes will lead to freon leakage and costly repairs.
☑️ Defrosting control
Washing and disinfection of internal chambers
After the ice has melted and the surfaces have dried, the general cleaning stage begins. Even systems No Frost over time, odors and bacteria accumulate, especially in hard-to-reach corners and on shelves.
For washing, use warm water with the addition of a mild detergent or baking soda solution. Aggressive chemicals, abrasive powders and solvents can damage the plastic coating of the cameras and make it cloudy. Thoroughly wipe all shelves, drawers and walls.
- 🧼 Remove all removable elements: shelves, containers, bottle racks.
- 🚿 Rinse the removed parts under running water and dry them separately.
- 👃 Pay special attention to rubber seals - wipe them with a damp cloth.
- 💨 Leave the doors open until the smell of the detergent completely disappears.
The drainage hole requires special attention. It can be carefully cleaned with a special soft brush or cotton swab to make sure there are no blockages. Clean drainage is a guarantee that during the next cycle of operation, water will drain correctly without stagnating inside.
What should not be washed?
It is strictly forbidden to use chlorine-containing products, acetone, gasoline or abrasive sponges. They destroy the structure of the plastic and can leave toxic traces, which then get into the products.
Preservation and preparation for transportation
If the refrigerator is turned off for a long time or is preparing to move, it must be preserved. The main task is to prevent the appearance of mold and protect the housing from mechanical damage.
After washing and drying, the doors should not be closed tightly. Leave a gap of 1-2 centimeters to allow air to circulate inside. If you are leaving for a long time, you can insert a folded towel or a special spacer wedge (often included) between the door and the body.
For transportation, use the original packaging if it has been preserved. If not, wrap the case with stretch film or bubble wrap, securing the doors with tape (but not too tightly so as not to deform the seals). The compressor must be in a vertical position during transportation.
It is important to secure the moving parts inside the chambers. Remove the shelves or securely fasten them so that they do not hit the walls when shaking. It is better to remove the vegetable boxes and transport them separately, as their plastic becomes brittle in the cold or when hit.
Rules for first switching on after inactivity
After a long shutdown or transportation, you cannot immediately plug in the refrigerator. If the device was transported lying down or was simply in the cold, the oil in the compressor needs time to drain into the crankcase and take on a working consistency.
Pause in a vertical position:
- 🕒 If the refrigerator was standing vertically - at least 2-4 hours.
- 🕒 If lying down transportation - at least 8-12 hours (preferably a day).
- 🕒 If there was winter transportation - up to 24 hours for acclimatization.
The first launch is best done without loading with food. Let the unit run idle for 2-3 hours until it reaches the desired temperature and turns off. Only after this can you gradually fill the chambers.
What should you do if, after turning on, the refrigerator hums, but does not freeze?
If after 3-4 hours of operation the walls of the chambers remain warm and the compressor runs continuously, there may be an oil distortion or a capillary blockage. Try turning off the device for 30 minutes and turning it on again. If the situation has not changed, you need to call a technician to check the circulation system.
Is it possible to store a switched-off refrigerator on the balcony in winter?
It is highly not recommended. Low temperatures make plastic brittle, and moisture can become trapped inside mechanisms, causing corrosion. In addition, the oil in the compressor thickens, which will make the first start difficult. Equipment should only be stored in a room with above-zero temperatures.
Do you need to lubricate the seals before long-term storage?
Yes, this will extend their service life. Wipe the rubber cuffs with a dry cloth, and then apply a thin layer of silicone lubricant or special rubber care product. This will prevent the material from drying out and cracking during inactivity.
How to understand that there is moisture left inside?
Run a dry white cloth along the inner walls and corners, especially in the evaporator area (if there is access). If there are wet marks on the napkin or condensation is visible, leave the doors open for a few more hours, ensuring a draft in the room.
Is the smell dangerous after a long period of inactivity?
A faint smell of “mustiness” may appear if drying was carried out poorly. In this case, treating the chambers with a vinegar solution or activated carbon will help. If the smell is sharp and chemical, this is a sign of a possible leak or melted wiring, diagnostics are required.