You bought a new refrigerator, connected it to the network, but the compressor has been running non-stop for several hours? Or, on the contrary, it turned off after 10 minutes, and you doubt whether this is normal? The first switching on is a critically important stage in the life of the equipment, on which its further performance depends. At this moment, the cooling system goes through primary temperature stabilization, and the compressor works in enhanced mode to reach optimal parameters.
In this article we will understand How long can the compressor run continuously when you first start different types of refrigerators (No Frost, drip, inverter)what factors influence the duration of this process, and in which cases it is worth contacting a service technician center You will also learn how to properly prepare the refrigerator for the first turn-on in order to avoid common mistakes, and what to do if the compressor does not work “the way” you expected.
Why does the compressor work longer than usual when first turned on?
When starting up for the first time, the refrigerator is faced with a task that will not happen in further operation: it needs to cool the entire internal chamber from room temperature (usually +20...+25°C) to operating values (from +2°C in the freshness zone to -18°C in the freezer). Unlike the normal mode, when the equipment maintains the already established cold, here it is required maximum performance.
The main reasons for long-term operation of the compressor:
- 🔥 Heating of seals and walls. During transportation and storage in the warehouse, the refrigerator parts warmed up to room temperature. The compressor needs not only to cool the air, but also to “remove” heat from plastic, rubber and metal.
- ❄️ Formation of an ice “coat” in No Frost. In models with the system No Frost when turned on for the first time, the fans distribute the cold across the chambers, and the evaporator is covered with a layer of frost - this is a normal process, but it requires additional energy.
- ⚙️ Refilling the refrigerant through the circuit. In new refrigerators, freon is evenly distributed throughout the system only after several on/off cycles. For the first hours, the compressor can work almost without pauses.
In addition, modern refrigerators are equipped with intelligent sensorswhich, when first started, carry out system calibration. For example, in models Samsung RB** or LG InstaView electronics analyzes the cooling rate and adjusts the compressor power. This process can take up to 8–12 hours.
Norms for the operating time of the compressor when first turned on
The duration of continuous operation of the compressor depends on the type of refrigerator, its volume and external conditions. Below is a table with approximate standards for different categories of equipment:
| Refrigerator type | Volume (liters) | Normal duration of the first cycle (hours) | Maximum permissible time without stopping |
|---|---|---|---|
| Drip (crying) | up to 200 | 2–4 hours | 6 hours |
| No Frost (single-chamber) | 200–300 | 4–6 hours | 8 hours |
| No Frost (two-chamber) | 300–400 | 6–10 hours | 12 hours |
| Inverter compressor | any | up to 24 hours (smooth operation without sudden shutdowns) | not applicable* |
* Inverter compressors do not turn off completely, but reduce speed. Their “continuous” operation on the first day is the norm.
It is important to consider that the data given is averaged. For example, if you turn on the refrigerator in a hot room (above +30°C), the cooling time may increase by 30–50%. The same applies to models with the function Super Freeze or Fast Cool, which are activated automatically when first started.
When is long operation of the compressor not the norm?
Although long operation of the compressor when first turned on is expected, there are signs that should alert you:
- ⏳ More than 24 hours without stopping (except for inverter models). This may indicate a malfunction of the thermostat or temperature sensor. More than 24 hours without stopping Freon leakage: knocking, grinding, vibration. In new refrigerators, a uniform hum is acceptable, but not “metallic” sounds. freon leak, malfunction of the thermostat or temperature sensor.
- 🔊 Extraneous sounds: knocking, grinding, vibration. In new refrigerators, a uniform hum is acceptable, but not “metallic” sounds.
- 🌡️ Lack of cooling after 8–12 hours. Touch the back wall (in drip models) or check the temperature in the freezer - if it has not dropped below +10°C, this is a reason to check.
- 💡 Flashing error indicators. For example, in refrigerators Bosch or Siemens code
E01orE02signals problems with sensors.
Special attention It is worth paying attention to models with linear compressors (for example, LG Linear Cooling). They are sensitive to voltage fluctuations, and if the network experiences surges, the compressor may run continuously to try to compensate for the instability. In this case, it will help voltage stabilizer.
What to do if the compressor does not turn off for more than a day?
If the refrigerator operates without stopping for more than 24 hours, follow these steps:
1. Check whether the door is tightly closed (sometimes packaging or incorrectly installed shelves get in the way).
2. Make sure that the refrigerator is not close to the wall or furniture (at least 5 cm is needed for ventilation).
3. Disable the quick freeze function (Super Freeze), if it is activated.
4. Check the voltage in the outlet (should be 220–230 V).
If the problem persists, call a technician. Possible reasons: a malfunction of the thermostat, a refrigerant leak, or a factory defect of the compressor.
How to properly prepare the refrigerator for the first use?
Many problems with long-term operation of the compressor arise due to improper preparation of the equipment. Follow this checklist to avoid common mistakes:
Remove all shipping bolts and fasteners from the compressor|Wipe the internal surfaces with a weak solution of soda (1 tablespoon per 1 liter of water)|Place the refrigerator on a flat surface (check the level)|Connect to a separate outlet (no extension cords or tees)|Let stand for 2-4 hours after delivery (especially if it’s cold outside)-->
Pay attention to transport bolts —they fix the compressor during transportation. If they are not removed, you will hear strong vibration when turning on, and the compressor itself can quickly fail. In the instructions for models Indesit or Atlant this item is often highlighted in bold, but users forget about it.
Another nuance - first loading of products. Don't rush to fill the refrigerator to capacity! The best option:
- Let the appliance run empty for 4-6 hours.
- Load no more than 50% of the volume, distributing the food evenly.
- Avoid hot foods - they will increase the cooling time.
Inverter vs conventional compressor: what is the difference when you first turn it on?
Refrigerators with inverter compressors (for example, Samsung Digital Inverter or Hitachi Inverter) behave differently than models with classic engines. Here are the key differences: Inverter compressors data-i="158">2–12 hours (with shutdowns)
| Parameter | Conventional compressor | Inverter compressor |
|---|---|---|
| First cycle time | 2–12 hours (with outages) | Up to 24 hours (without full stops) |
| Noise level | Loud clicks when turning on/off | Evenly quiet hum |
| Energy consumption | Peak in the first hours, then decreases | Stable, without surges |
| Voltage sensitivity | Reacts less to drops | Requires a stable voltage (220 V ±5%) |
Inverter compressors do not turn off completely, but smoothly adjust the power. Therefore, if you hear a uniform sound without pauses, this is normal. The main thing is that the temperature in the chambers drops (check 6-8 hours after switching on).
In models with double inverter compressors (for example, LG Door-in-Door), the first start can take up to 36 hours. This is due to the fact that each compressor (for the refrigerator and freezer compartments) is calibrated separately. Don’t be alarmed - the equipment is simply “adjusted” to the optimal mode.
External factors affecting the operating time of the compressor
Even a perfectly working refrigerator can work longer than usual when first turned on if external conditions are not taken into account. Here's what's worth checking:
- 🌡️ Room temperature. The optimal range is +18…+22°C. At +30°C and above, the cooling time increases by 40–60%.
- 🔌 Power quality. Low voltage (less than 200 V) causes the compressor to work at its power limit. Use stabilizerif your network has frequent fluctuations.
- 🚪 Frequency of door opening. Every time you open the refrigerator in the first hours of operation, the compressor has to re-create the cold.
- ☀️ Direct sunlight. If the equipment is located near a window, its body heats up, and the compressor spends energy cooling the walls.
Air humidity also plays a role. In damp rooms (for example, in a kitchen with poor ventilation), excess frost may form on the evaporator, which will cause the compressor to work longer. If you notice that the refrigerator “sweats” in the first hours, this is normal, but if the condensation has not disappeared after a day, check the door seals. No Frost Excess frost may form, causing the compressor to run longer. If you notice that the refrigerator “sweats” in the first hours, this is normal, but if the condensation does not disappear after a day, check the door seals.
What to do if the compressor turns off too quickly?
The opposite situation also happens: the compressor worked for 10-15 minutes and turned off, but the temperature in the chambers remained at room temperature. This is also not normal. Possible reasons:
- ⚡ Malfunction of the starting relay. The compressor cannot reach the required speed and turns off. A common problem in models Atlant or Stinol after long-term storage.
- 📉 Overheat protection triggered. If the refrigerator was turned on immediately after transportation in cold weather, the temperature sensor was triggered.
- 🔧 Incorrect installation. For example, the refrigerator is tilted and oil from the compressor does not enter the circuit.
- 🛠️ Factory defect. In rare cases, the compressor may be faulty out of the box.
What to do in this situation?
- Unplug the refrigerator for 30 minutes, then turn it on again.
- Check if the power indicator is on (if not, the problem is in the outlet or power cord).
- Touch the compressor (it is located at the bottom of the back). If it is cold, it means that the motor does not start.
- If after turning on the situation again, contact the service center (this is a warranty case).
In models with electronic control (for example, Liebherr or Beko), a quick stop of the compressor may be due to s sensor error. Look at the display - if the symbols are lit F2, F3 or similar, diagnostics are required.
How to check if the compressor is working?
If you are not sure that the compressor turns on at all, do the following
1. Place your hand on the back wall of the refrigerator at the bottom (where the motor is). You should feel a slight vibration.
2. Listen: even the quietest models produce a faint hum.
3. Check the temperature of the condenser (grid at the back) - 10-15 minutes after turning it on, it should become warm.
FAQ: Frequently asked questions about turning on the refrigerator for the first time
How long should the compressor run in a No Frost refrigerator when first turned on?
In models No Frost The compressor can operate non-stop from 4 to 12 hours, depending on the volume. For example, for a refrigerator Samsung RB30J3000 (300 l) the norm is 6-8 hours, and for LG GA-B489YDQZ (380 l) - up to 10-12 hours. The main thing is that after 6 hours the temperature in the freezer begins to drop below 0°C.
Why does the new refrigerator hum and does not turn off for 18 hours?
If you have a model with with an inverter compressor, this is the norm - such refrigerators work almost continuously, but with reduced power. For regular compressors, 18 hours is a long time, but if the temperature in the chambers drops, wait another 6-12 hours. If after 24 hours the compressor does not turn off and the freezer is not cold, call a specialist.
Is it possible to immediately load food after the first turn on?
Not recommended. It is optimal to wait 4–6 hours until the refrigerator reaches operating mode. If you urgently need to cool food, load it gradually (no more than 30% of the volume) and do not add hot food. In models with the function Fast Cooling (for example, Bosch KAN92VI30R), you can speed up the process, but do not abuse this mode.
What will happen if the transport bolts are not removed before turning on?
If the bolts are not removed, the compressor will vibrate more than usual, which will lead to:
- damage to freon tubes (risk of leakage);
- increased noise and rattling;
- premature wear of motor bearings.
In some cases, the refrigerator may even “move away” from a place due to vibration. Always check that the bolts have been removed (usually there are 3-4 of them on the back panel).
Is it necessary to defrost a new refrigerator before turning it on for the first time?
No, this is not only unnecessary, but also harmful! Defrosting is only required for used refrigerators. New models are supplied with dry chambers, and excess moisture can disrupt the operation of the system No Frost or lead to corrosion of parts. Just wipe the internal surfaces with a dry cloth before turning it on.