Many owners of modern household appliances mistakenly believe that the system No Frost completely eliminates the need for manual maintenance of the unit. However, even the most advanced models require periodic general cleaning and defrosting to remove bacteria, odors and plaque that cannot be removed automatically. If your refrigerator has a classic design with a drip system in the main compartment or a combined one, ignoring this procedure will lead to a decrease in the efficiency of the compressor.
The process of defrosting a refrigerator with a bottom freezer has its own nuances that distinguish it from servicing old Soviet models or devices with a top freezer. When the ice melts, water will flow down, and if the lower levels are not prepared, there is a risk of flooding the kitchen or damaging the seals. In addition, correct implementation of all stages will help extend the service life thermostat and avoid the appearance of mold in hard-to-reach places.
In this article we will analyze in detail the algorithm of actions that will allow you to safely and quickly put your equipment in order. You will learn how to prepare food, what tools you will need and how to properly start the unit after inactivity so that it works silently and economically.
Preparing for the defrosting process
The first and most important step is to free the internal space from food. Before you begin any manipulations, you need to make sure that you have a place for temporary storage of supplies. If it is winter outside, you can use the balcony, but only if the temperature there does not fall below the permissible values for storing specific products, otherwise they may spoil or, conversely, freeze.
In the warm season, you will have to be smart: use cooler bags, thermal bags, or simply wrap the products tightly in several layers of fabric and newspaper. Critical important do not just leave the products on the table, especially meat and dairy products, as the defrosting process can take from 10 to 24 hours depending on the thickness of the ice.
⚠️ Warning: Never try to speed up the process by leaving food in bags inside a running refrigerator. This will disrupt air circulation and lead to spoilage of the contents even before cleaning begins.
Pay special attention to the freezer compartment located below. It is there that the bulk of the ice most often accumulates, which must be removed. Prepare in advance several containers with a wide neck - basins or deep baking sheets, which will be needed to collect melting water.
Disconnecting the power supply and removing the shelves
After the food has been removed, you should disconnect the refrigerator from the power supply. Do not rely only on the power button, if there is one on the case; The safest way is to pull the plug from the socket. This guarantees complete safety during further work, especially if you plan to use water to accelerate the melting of ice.
While the unit is turned off, begin dismantling the internal elements. Glass shelves, plastic containers, crisper and freezer drawers, and bottle holders all need to be removed. It is better to wash them separately in the bath or under the shower, using a mild detergent so as not to scratch the surface.
Remove all removable parts carefully, as plastic becomes brittle at low temperatures. If you just turned off the refrigerator, let it sit for 10-15 minutes to allow it to reach room temperature before touching the plastic parts. This will prevent the appearance of microcracks on polymer coatings.
☑️ Preparation for defrosting
Natural defrosting versus accelerated methods
There are two main approaches to removing ice crust: natural melting and active acceleration of the process. The classic method involves leaving the refrigerator and freezer doors open for a long time. This is the safest option for the evaporator pipes of the cooling system, as it eliminates sudden temperature changes.
If time is short, you can use a hairdryer or containers of hot water. However, here you need to act extremely carefully. A directed stream of hot air should not hit the rubber door seals, as they may become deformed, which in the future will lead to a loose fit and loss of cold.
The hot water method involves placing a pan of boiling water on the bottom of the freezer (on a towel or board). The steam will help the ice thaw quickly. But remember that the pouring water can be very hot, so the bottom of the chamber needs to be protected.
Why can’t you pick the ice with a knife?
Using sharp objects to chip ice is one of the most common reasons for refrigerator failures. Thin evaporator tubes are very close to the surface, and careless movement can lead to breakdown and leakage of freon, repair after which is often not economically feasible.
The table below provides a comparison of defrosting methods so that you can choose the best one for your situation:
| Method | Time spent | Safety for equipment | Efficiency |
|---|---|---|---|
| Natural melting | 12-24 hours | Maximum | High |
| Hair dryer (warm air) | 1-2 hours | Medium (risk for plastic) | High |
| Hot water in container | 2-4 hours | High | Medium |
| Mechanical (knife) | 30 minutes | Critical low | Low |
Water removal and cleaning of internal surfaces
As the ice melts, water will flow into a special groove located on the back wall of the main chamber, from where it should go into the drainage hole. However, if there is severe defrosting, especially in the bottom freezer, the drainage may not be able to cope with the volume of liquid. In this case, water will begin to accumulate at the bottom.
Regularly check the water level and soak it with rags or a sponge. Do not allow water to spill over the side onto the floor, as this can damage the flooring, especially if it is laminate or parquet. To collect the bulk of the water, it is convenient to use a syringe without a needle or an enema, blowing water from the grooves into a prepared container.
When all the ice has melted, start washing. Use a solution of baking soda or a special product for cleaning refrigerators. Aggressive chemistry, such as chlorine-containing products or abrasive powders, are strictly prohibited, as they can damage the internal coating and leave a lingering odor.
⚠️ Attention: Carefully Clean the drainage hole with a cotton swab or soft wire. It is its clogging that often causes a puddle to appear under the refrigerator in the future.
Cleaning the outer part and rear grille
While the refrigerator is open and disabled, it would be a shame not to clean up the outside. While you were wondering how to defrost a refrigerator with a freezer underneath, you may have overlooked the fact that dust on the rear grille (condenser) significantly reduces heat transfer efficiency. This causes the compressor to work longer and consume more electricity.
Gently vacuum the back wall using a soft nozzle. If the dust is dry, you can use a slightly damp cloth, but be careful not to get any water on the electrical contacts or the motor. Also wipe the outside of the doors, paying attention to the handles and rubber seals, where grease and dirt often accumulate.
Inspect the area around the refrigerator. Make sure that there is a gap of at least 5-7 cm between the back wall of the unit and the wall of the room for normal air circulation. If the refrigerator is built into a niche, check the ventilation holes.
Starting the refrigerator after defrosting
After completing all water procedures and thoroughly wiping the internal surfaces dry, you can begin assembly. Return all shelves, drawers and containers to their original places. Make sure that they fit tightly and correctly, especially the guides for the freezer drawers.
Now the refrigerator can be plugged in. Don't rush to load products right away! Let the unit idle for at least 2-3 hours (preferably 4-5 hours) until it reaches the required temperature and the thermostat turns off the compressor. Loading warm food into a refrigerator that has not cooled down will create a huge load on the system.
Watch the first cycle of operation: listen to the compressor hum, to see if there are any extraneous gurgling sounds (although a short gurgling of freon in the first minutes is normal). If everything is working properly, you can gradually fill the chambers with products.
How long does complete defrosting take?
The time depends on the thickness of the ice and the temperature in the room. On average, the process takes from 4 to 12 hours. If the ice crust is very thick, it may take up to a day.
Do you need to defrost a No Frost refrigerator?
Yes, but less often. It is recommended to defrost and wash the No Frost system at least once a year for hygienic cleaning and removal of bacteria, even if ice is not visually visible.
What to do if the refrigerator does not freeze after switching on?
Check whether the doors are tightly closed. If the temperature does not drop within 5-6 hours, and the compressor works constantly or does not turn on at all, there may be a failure or a freon leak - call a technician.
Is it possible to use a fan to speed up?
Yes, you can direct the fan into the open chambers of the refrigerator. This will speed up air circulation and ice melting without harming the equipment, unlike a hair dryer.