Situations when it is required complete shutdown of the refrigerator from the electrical network arise quite often: moving to a new apartment, general cleaning with washing the unit, planned defrosting or a long trip, during which you do not plan to use the device. Unlike older models with a drip system, modern technology devices No Frost have a more complex design, including fans, additional heaters and electronic control units, which requires a special approach to the shutdown procedure.
Incorrect actions when de-energizing the equipment can lead to serious consequences, including failure of the compressor, the appearance of an unpleasant odor or even a short circuit when turned on again. Many users make the mistake of simply unplugging the compressor while the compressor is running or ignoring the need to completely defrost the evaporator.
In this detailed guide, we will go through all the steps to safely shut down, paying attention to the nuances of working with electronics and mechanical components. You will learn why it is important to observe time intervals and how to prepare the unit for long-term downtime so that it will last for many years.
Preparing for a shutdown: assessing the situation and safety
Before reaching for the plug, it is necessary to conduct a preliminary assessment of the condition of your refrigerator. If the device was operating in normal mode and the compressor is currently humming, a sudden loss of power is undesirable, although not always critical for modern models. However, if you are planning long-term preservation, it is better to wait until the engine stops on its ownhas reached the set temperature and there is no pressure in the system that requires resetting.
Particular attention should be paid to the electronic control unit. On models with a display and many functions, a sudden power interruption can cause a software failure, although modern controllers usually have protection. However, if the menu has a “Vacation” or “Eco” function, it is recommended to activate it before physically turning it off to allow the system to complete the current cycles on its own.
⚠️ Attention: Never unplug the refrigerator with wet hands or pull the cord if the outlet is located in a hard-to-reach place or is damaged. This may result in electric shock or short circuit.
It is also important to empty the chambers of food in advance. If you turn off the refrigerator to defrost, do it several hours before the planned time so that the food does not have time to spoil. For models LG or Samsung with the system Smart Diagnosis turning off the power will reset the current error logs, so if you have diagnosed a malfunction, first take the code readings.
Step-by-step instructions: safe disconnection from the network
The process of physically disconnecting a device from the power supply seems simple, but contains important technical nuances. The first step should always be to remove the plug from the outlet rather than pull the cord. Sudden jerks can damage the internal contacts of the plug or the cord itself, which will cause sparking in the future.
If your refrigerator is connected through a surge protector or voltage stabilizer, first turn off the toggle switch on the filter itself, wait until the indicators go out, and only then remove the plug. This is especially true for expensive models with inverter compressors, which are sensitive to power surges when the circuit breaks.
- 🔌 Make sure your hands are dry and grasp the plug body, not the wire.
- 🛑 If you are using an extension cord, first unplug it, then unplug the refrigerator.
- ⏱ After removing the plug, wait 1-2 minutes before any manipulations with the equipment.
- 🧹 Inspect the power cord for cracks or melts before packing.
For built-in equipment, where the outlet may be located in a hard-to-reach place (for example, behind a plinth or in an adjacent cabinet), access to which is blocked, it is allowed to use the machine in the electrical panel if it is signed. However, this method is less preferable, since you may accidentally turn off power to other important devices.
☑️ Shutdown algorithm
Features of defrosting the No Frost system before storage
Many owners mistakenly rely on the name of the technology No Frost, believing that there is no need to defrost such a refrigerator. This is a misconception. Although ice does not form on the walls of the chamber due to air circulation, moisture from the food is deposited on the hidden evaporator located behind the rear panel. During a long shutdown, this moisture must be removed, otherwise mold will form inside the unit and a musty smell will appear.
The defrosting process No Frost differs from conventional models. You don't have to wait a day like with old refrigerators. It is enough to leave the doors open for 4-6 hours at room temperature. The fan that usually blows out cold does not work when the power is turned off, but natural convection will help dry hidden cavities.
| System type | Defrosting time | Does it need to be washed? | Risk odor |
|---|---|---|---|
| No Frost (full) | 4-6 hours | Required | High |
| Drip (Static) | 12-24 hours | Required | Average |
| Low Frost | 6-8 hours | Recommended | Average |
| Direct Cool | 24+ hours | Required | High |
It is strictly prohibited to use hair dryers, fan heaters or sharp objects to speed up the defrosting of the evaporator. The plastic of the air ducts in the systems No Frost is very fragile in the cold and can crack due to temperature changes or mechanical stress, which will lead to disruption of air circulation.
What will happen if you do not defrost No Frost?
Water will remain inside the hidden evaporator box. If left idle for a long time (a month or more), it will bloom, and when turned on, the fan will spread mold spores throughout all products. It will be extremely difficult to remove this smell later.
Care of the compressor and technical components
The compressor is the heart of the refrigerator, and its condition directly affects the service life of the entire device. When shutting down for more than two weeks, it is recommended to let the compressor “rest” and dry out any condensation that may have formed on the external parts of the motor. Wipe the back grill with a dry cloth, removing dust and animal hair, which often clog the space between the coils of the condenser.
If you turn off the refrigerator Bosch or Siemens with an inverter motor, remember that they are quieter, but more sensitive to humidity. Make sure that the room where the de-energized unit will be located is well ventilated. High humidity can lead to oxidation of the contacts on the start relay or control board.
It is important to check the condition of the rubber seals. If left idle for a long time without load, they may lose their elasticity if they are tightly closed. Therefore, it is better to leave the doors slightly open, fixing them in such a position to ensure the flow of air inside the chambers.
- 🧹 Vacuum the condenser from the back (through the grille) without removing it.
- 💧 Wipe the compressor with a dry rag to remove dust.
- 🚪 Leave the doors slightly open 2-3 cm for ventilation.
- 🌡 Make sure that the room temperature does not drop below +5°C.
⚠️ Attention: Do not store the disconnected refrigerator at a temperature below +5°C. The oil in the compressor thickens, and the plastic parts become brittle, which can lead to breakage the next time you start.
Rules for transportation and storage without cold
If the refrigerator is unplugged for transport, it is critical to follow the vertical movement rule. The unit can be tilted No Frost no more than 40 degrees. If tilted strongly or laid on its side, oil from the compressor may flow into the refrigerant circuit, and upon startup, cause water hammer, which is fatal to the motor.
Before transportation, be sure to secure moving parts: shelves, drawers, egg trays. Use masking tape or standard fasteners if you still have them. The doors also need to be secured so that they do not swing open en route and damage the hinges.
When storing in an unheated garage or country house, cover the equipment with a breathable material, such as an old sheet. Polyethylene film will create a greenhouse effect and provoke corrosion of metal parts and the appearance of fungus on plastic.
Switching on after a long period of inactivity
The most common mistake is trying to turn on the refrigerator immediately after being brought into a warm room from the cold or after shaking during transportation. If the device was in the cold, you need to give it time to warm up to room temperature (at least 3-4 hours) so that the condensation on the electronic boards evaporates.
If the refrigerator has just been turned off for a long time, conduct a visual inspection before turning it on. Make sure the inside is dry, there are no signs of rodents (they often live in insulation), and the power cord is not damaged. Insert the plug into the outlet, but do not load food immediately.
Allow the device to idle for at least 2 hours. During this time, the compressor will gain temperature, the system No Frost will enter operating mode, and the correct temperature background will be established in the chambers. Only after this can you add food.
Is it possible to turn off the No Frost refrigerator at night to save energy?
It is strictly not recommended. Constant on and off cycles place enormous stress on the compressor and start relay. Savings on electricity bills will not be comparable to the risk of an expensive unit breaking down. In addition, the products will either defrost or freeze, losing their properties.
What should you do if, after turning on, the refrigerator hums, but does not freeze?
Most likely, oil has leaked into the cooling system due to improper transportation or tilting. It is necessary to turn off the unit and leave it in an upright position for 24 hours. If the problem persists, you need to call a technician to bleed the system or change the oil.
Do you need to wash the inside of the refrigerator before turning it off?
Yes, definitely. Remains of food and juices at room temperature will begin to rot, which will lead to the appearance of a persistent unpleasant odor and the proliferation of bacteria, which will then be very difficult to remove from porous plastic surfaces.