After the delivery of new household appliances, there is a natural desire to quickly check its performance and load it with products. However, haste in this matter often leads to breakdowns or incorrect operation of the cooling system. The question of how long the refrigerator should work when first turned on worries many users, because the service life of the compressor and the quality of freezing depend on this.
It is important to understand that first start is not just a click of a switch, but a complex physical process of equalizing the refrigerant pressure and oil distribution in the system. If you ignore the technical requirements, you may encounter the fact that the unit will constantly make noise, will not gain temperature, or will completely fail in a short time.
In this article we will analyze in detail the time intervals necessary for the correct operation of different types of refrigerators, explain the reasons for the delays and help determine when to sound the alarm. Correct operation from the first minutes guarantees that your equipment will last for many years without expensive repairs.
The influence of the time of year and transportation on startup
Before talking about the minutes of operation of the compressor, it is necessary to take into account a critical factor - the ambient temperature during delivery. If you brought a refrigerator in winter, when it was cold outside or in an unheated entrance, oil in the compressor it could thicken. An attempt to start it immediately will result in the engine operating under extreme load, which can lead to jamming of the piston group.
The equipment needs time to acclimatize. Even if the refrigerator is brought into a warm room, it takes 3 to 4 hours to warm up to room temperature. Only after this can you turn on the device to the network. Ignoring this rule is the most common reason for refusals of warranty service.
⚠️ Attention: If the refrigerator was transported lying down, be sure to let it stand in an upright position for at least 8-10 hours before turning it on. This time is necessary for the oil to completely drain from the cooling system pipes back into the compressor crankcase.
In the summer the situation is different: the temperature difference is minimal, but dust and heating of the housing in the sun also play a role. If the equipment has been in direct sunlight, let it cool in the shade before connecting to the power supply. Thermal shock This will not lead to anything good.
How long should the refrigerator work before the first shutdown
The most common question from users: how long should the refrigerator shut down for the first time? The answer depends on the type of compressor and the volume of the chambers. A conventional refrigerator without a No Frost system when empty must work continuously for 2 to 4 hours to reach the required temperature and turn off. Single-compressor Models with a system or dual-circuit units can work longer - up to 6-8 hours in the first cycle. This is due to the fact that they not only need to cool the air, but also freeze the evaporator, and also warm up the defrost heating elements (if the cycle includes testing). In some cases, the first cycle can last up to 12 hours if the room is hot or the refrigerator is loaded with food at room temperature. single-compressor a refrigerator without a No Frost system in an empty state must operate continuously for 2 to 4 hours to reach the required temperature and turn off.
Models with system No Frost or dual-circuit units can work longer - up to 6-8 hours in the first cycle. This is due to the fact that they not only need to cool the air, but also freeze the evaporator, and also warm up the defrost heating elements (if the cycle includes testing). In some cases, the first cycle can last up to 12 hours if the room is hot or the refrigerator is loaded with food at room temperature.
It is important to distinguish between normal operation and malfunction. If the unit is humming for the second day and does not turn off, while it is warm or too cold inside, this is a cause for concern. However, if it is already cold inside and the compressor continues to work, the door seal may be broken or the thermostat is faulty.
Do not be alarmed if during the first hours of operation the body of the refrigerator, especially the side walls, heats up noticeably. This normal physical process: heat is removed from the chambers through a condenser built into the walls. The more intense the compressor works, the hotter the sides can be.
Features of inverter compressors
Modern refrigerators are increasingly equipped with inverter compressors. Their operating principle is radically different from classical linear models. If a conventional motor operates on the principle of “turned on at full power - cooled - turned off”, then the inverter does not turn off completely after the initial temperature rise, but slows down, maintaining the cold in the background.
Therefore, looking for a moment of “silence” when the engine stops is useless in such models. When first turned on, such a refrigerator can operate at high speeds for several hours, and then switch to quiet mode. This is not a breakdown, but a normal situation. Energy consumption in this mode it is minimal, and the wear of parts is much lower.
Why is the inverter quieter?
The inverter compressor does not experience peak loads at each start, since it does not stop completely. The absence of constant clicks and vibrations when starting makes its operation almost silent.
If you have a model with an inverter, focus not on the sound of the motor, but on the temperature inside the chambers. Use a thermometer to make sure that the temperature in the main chamber is around +4...+5°C, and in the freezer -18°C. If the temperature is stable, then the equipment is working correctly, even if the motor is humming around the clock.
Why the refrigerator does not turn off: the main reasons
There are situations when time passes, but the compressor does not stop. This can be caused by both external factors and technical problems. Before calling a technician, conduct your own diagnostics. Often the reason lies in improper installation or operation.
- 🌡️ Incorrect setting of the thermostat: If you turn the knob to the maximum (all the way), the refrigerator will try to reach an unattainable cold and will never turn off. Try setting the average value.
- ❄️ Loading with warm products: If you put a pan of hot soup or a lot of food at room temperature in an empty but already cold refrigerator, the operating time will increase significantly.
- 🚪 Tightness failure: Not tightly closed a door, skewed hinges or a damaged seal lead to a constant flow of warm air. The compressor works non-stop, trying to compensate for heat loss.
- 💨 Poor ventilation: If the refrigerator is moved close to the wall or stands in a niche without gaps, heat is not removed from the condenser. The system overheats and cannot cool effectively.
⚠️ Attention: If the refrigerator runs for more than 24 hours without a break and does not get cold inside, immediately unplug it. Continued operation may cause the compressor to burn out. Check the integrity of the circuit (there are no oily spots at the back) and the presence of freon.
It is also worth checking Super Freeze mode. If you accidentally activate this feature, the refrigerator will run continuously, ignoring the thermostat readings. Turn off this mode and wait a few hours.
☑️ Diagnostics of continuous operation
Table: Standard indicators of the first cycle operation
For ease of comparison, we present average data on the operating time of various types of refrigeration equipment at the first start-up in an empty state at room temperature +23°C.
| Refrigerator type | Expected operating time before the 1st shutdown | Normal temperature inside | Behavioural features |
|---|---|---|---|
| Single compressor (Drip) | 2 - 4 hours | +4...+6°C | Clear on/off cycles |
| Two-compressor (No Frost) | 4 - 8 hours | +2...+5°C (cold), -18...-20°C (frost) | Compressors can work in turn or together |
| Inverter (Linear) | Does not turn off (reduces power) | Stable, without surges | Works quietly, almost imperceptibly after dialing cold |
| Industrial / Showcase | Depends on the load (often continuously) | Depends on the purpose | Designed for continuous operation with frequent opening |
| *Data is for reference only and may differ depending on the model and operating conditions. | |||
As can be seen from the table, the time spread can be significant. Critical threshold 24 hours of continuous operation without reaching temperature indicators are considered - in this case, specialist intervention is required.
Rules for the first boot groceries
Many people make the mistake of loading the refrigerator with groceries immediately after turning them on. This is strictly forbidden. An empty refrigerator gains temperature faster and more evenly. Loading with warm products will make compressor work overtime, trying to cool a large volume of organic matter.
It is recommended to wait at least 4-6 hours after switching on before starting loading. Ideally, wait until the first regular shutdown (for models with a conventional compressor). It is better to cool the products to room temperature in advance.
Do not overcrowd the chambers on the first day. Air must circulate freely between products, especially in systems No Frostwhere cooling occurs due to forced circulation. If you cover all the ventilation holes with bags, the temperature sensors will show incorrect data.
Frequently asked questions and answers (FAQ)
Is it possible to turn on the refrigerator immediately after delivery if there was no shaking?
No, it is not possible. Even if transportation was careful, the oil in the compressor should drain into the crankcase. In addition, the equipment needs time to acclimatize, especially if there was a temperature difference between the street and the room.
Why does the refrigerator hum loudly when you first turn it on?
When you first start it, the system enters operating mode, and the refrigerant pressure may be unstable. Also, a new compressor may operate louder due to parts that have not yet been worn in. If the noise is not accompanied by vibration of the housing and subsides after a couple of cycles, this is normal.
What to do if the refrigerator turned on, worked for 10 minutes and turned off, but there is no cold?
This may indicate a freon leak or a malfunction of the start relay. If you hear a click when you turn it on, the buzzing lasts a few seconds and is followed by another click (safety shutdown), call a technician. It is forbidden to climb inside on your own.
Do you need to wash the refrigerator before turning it on for the first time?
Required. Industrial dust, grease or plastic smell may remain inside. Wash the chambers with warm water and mild detergent or soda, wipe dry thoroughly and only then plug in.
Does the voltage in the network affect the first start-up time?
Yes, low voltage can lead to the compressor being unable to start or working ineffectively, taking a long time to gain temperature. In such cases, it is recommended to use a voltage stabilizer, especially in private homes or old housing stock.