After unpacking and installing a new refrigerator, many owners are faced with a situation that causes legitimate concern: the unit has been running for several hours, but does not turn off. The compressor is humming, the walls are cooling, but the engine indicator light is constantly on, and there is still no silence. This is a common scenario, and in most cases it does not indicate a breakdown, but is part of the normal process initial start-up.
Modern models of refrigeration equipment, be it Indesit, Atlant or premium ones, are equipped with complex control electronics, which require time to stabilize temperature modes. If you have just turned on the device, especially after transport, the system needs to cool the entire internal volume, including plastic elements, shelves and products, if you have already loaded them. Long-term operation in this case is Liebherr, are equipped with complex control electronics, which require time to stabilize temperature conditions. If you have just turned on the device, especially after transport, the system needs to cool the entire internal volume, including plastic elements, shelves and products, if you have already loaded them. Long-term work in this case is a normal physical reaction of the system to a sharp temperature change..
However, you should not rely only on intuition. There is a clear time interval during which the equipment must enter the operating cycle and pause. Understanding these processes will help you distinguish normal operation from a real malfunction that requires the intervention of a service center. Let's look in detail at how much time is allocated for this process and what factors influence it.
Standard operating time before the first shutdown
The answer to the question of how long a new refrigerator works before the first shutdown depends on many technical parameters, but there are average standards that engineers rely on when designing control systems. In normal mode, provided that the installation is correct and there are no extreme external factors, the primary cooling cycle takes a certain time. Typically, this period varies from 3 to 8 hours of continuous operation.
If your refrigerator is equipped with a system No Frost, the initial run time may be increased. This is due to the fact that the system needs not only to cool the chambers, but also to carry out a defrost cycle of the evaporator (if it was in demonstration mode in the store) or to stabilize the operation of the fans. For classic drip systems, this process often goes faster, but the difference is not always critical.
It is important to consider that temperature sensors installed inside the chambers have a certain inertia. They do not react instantly to changes in degrees, but average the indicators. Therefore, even if the air is already cold, the electronics can keep the compressor turned on until the food and internal walls have cooled down. Compressor is the heart of the refrigerator, and its long operation at the start is necessary to create a reserve of cold.
It is worth noting that in hot weather or if the refrigerator is loaded with food at room temperature, the operating time may reach the upper limits of normal. In such conditions, heat inflows are large, and the system requires more energy and time to achieve the set thermostat parameters.
Factors influencing the duration of the initial start-up
Why in some cases does the refrigerator turn off after 2 hours, while in others it buzzes for the 10th hour? There are a number of objective reasons that directly affect the cooling rate of the chambers. Understanding these factors will help you objectively assess the situation and not panic ahead of time.
First of all, ambient temperatureplays a decisive role. If you install a new refrigerator in the kitchen, where the air temperature exceeds 25-28 degrees, heat exchange in the condenser (grid at the back or on the sides) is difficult. The compressor has to work harder to remove heat. Under such conditions, the time until the first shutdown can increase significantly.
The second important factor is the volume and temperature of the loaded products. An empty refrigerator cools down faster than a completely filled one. However, if you load warm food into the chambers, such as freshly cooked meals or store purchases that have not yet cooled down, the load on the system increases sharply. Each gram of warm mass requires the removal of a certain amount of thermal energy.
Effect of the fast freezing mode
If you have activated the Super Freeze function or a similar fast cooling mode, the refrigerator will operate continuously until you manually turn off this function or the timer has passed (usually 24 hours). In this mode, the thermostat ignores the standard temperature settings.
The third aspect is the correct installation. If the refrigerator is too close to the wall, air circulation around the condenser is disrupted. For effective heat exchange, a gap of at least 5-7 centimeters is required from the back wall to the furniture. The lack of clearance leads to overheating of the system and increased operating time.
Features of operation of inverter compressors
The modern market of household appliances is increasingly filled with models with inverter compressors. Owners of such devices, for example, popular models Samsung or LG, are often surprised that their refrigerator does not turn off at all in the classical sense of the word. And this is absolutely normal for this technology.
Unlike old linear compressors, which operate on the principle of “turned on at full power - cooled - turned off,” the inverter motor regulates its rotation speed. After the initial cooling, it does not stop completely, but goes into low speed mode, maintaining the temperature. Therefore, you may not hear the characteristic click of the relay and silence at all.
This allows you to achieve several important goals:
- 🌡️ Maintaining a more stable temperature without jumps, which is useful for storing food.
- 🔇 Reducing noise levels, since the compressor does not start abruptly from maximum rpm.
- ⚡ Energy savings due to the absence of starting currents.
- 🛠️ Increased engine life due to the absence of constant start-stop cycles.
If you have just such a model, then you need to focus not on the absence of shutdowns, but on the noise level and temperature inside the chambers. If it’s cold inside, and the hum is quiet and monotonous, it means that the appliance is working in the normal mode of maintaining the temperature.
Algorithm for checking the serviceability of a new refrigerator
If more than 10-12 hours have passed and the refrigerator has not turned off (or has not switched to quiet mode), it is necessary to carry out diagnostics. You should not immediately call a specialist, as often the problem lies in simple things that you can fix yourself.
First of all, check the tightness of the doors. Rubber seal should ensure tightness. If the door is warped or the seal is dirty, warm air constantly flows in, forcing the compressor to work without interruption. Also make sure that you did not leave the chamber open during the test or that the food does not interfere with the tight closure.
The second step is to check the thermostat. You may have accidentally set the maximum cooling mode ("Min" or "Max" depending on the model). For initial start-up and normal operation, it is recommended to set the average values. Try changing the setting by 1-2 notches towards less intense cooling and monitor the reaction of the equipment for 1-2 hours.
☑️ Diagnostics of long-term operation
It is also worth paying attention to the location of the refrigerator. If it is placed next to a radiator, stove, or in direct sunlight, the system will not be able to effectively discharge heat. In such conditions, the refrigerator will work for wear, trying to compensate for external heating.
Table of norms and deviations of operating time
For ease of assessment of the situation, we have systematized data on operating time depending on conditions. Use this table as a guide, but remember that each model has its own technical features, spelled out in user manual.
| Operating conditions | Expected time until 1st shutdown | Status |
|---|---|---|
| Empty refrigerator, room t° (20-22°C) | 2 - 4 hours | Normal |
| Loaded with products, room temperature | 4 - 8 hours | Normal |
| High temperature indoors (>28°C) | 8 - 12 hours | Acceptable |
| More than 12-14 hours without a break | Endless | Check required |
| Inverter compressor | Does not turn off (changes speed) | Normal |
If your indicators fall into the “Check required” column, do not rush to conclusions. Give the equipment another 1-2 hours, after checking the settings. Sometimes the electronics need extra time to calibrate the sensors after a power surge when turned on.
⚠️ Attention: If the rear grill of the refrigerator remains cold after prolonged use (more than 12 hours) and there is no cooling inside, this may indicate a refrigerant leak or a faulty compressor. In this case, further operation is prohibited.
When you need to contact a service center
There are situations when prolonged operation of the refrigerator ceases to be the norm and becomes a sign of a serious malfunction. Ignoring these symptoms can lead to failure of expensive components such as the compressor or electronic control module.
The first warning sign is the lack of cold when the compressor is running. If the motor has been humming for 24 hours, the temperature inside the chambers is above +10 degrees, and the condenser (grid at the back) is only partially warm or cold, then the refrigerant circulation cycle is disrupted. This could be a clogged capillary tube or a freon leak.
The second case is the formation of an ice coat in one of the compartments (usually in the freezer with a No Frost system) or, conversely, a complete absence of frost on the evaporator when the fan is running. This may indicate a malfunction of the defrost system or problems with sensors.
You should also be wary if the refrigerator makes uncharacteristic sounds: metallic clanging, whistling or loud gurgling sounds different from normal humming. This may indicate mechanical damage to the internal components.
What to do if the refrigerator is new, but does not freeze?
If the new refrigerator works for a long time, but does not freeze, first of all, check whether all the transport fasteners have been removed (if they were inside). Make sure the plug is firmly inserted into the outlet and there is voltage. Check if the water supply hose is kinked (for models with an ice maker). If all external factors are excluded, and there is no cold for more than 6-8 hours, call a specialist under warranty.
Is it possible to load food immediately after turning it on?
You can load food, but it is not recommended to fill the refrigerator completely with warm food in the first hour of operation. It is better to let the unit run idle for 1-2 hours so that it gains its initial cold. Then you can gradually load the food, avoiding a sudden thermal shock to the system.
Why does the refrigerator click but does not turn off?
The clicking noise may be coming from the protection relay or thermostat, trying to start or stop the compressor. If the clicks are frequent, but the engine does not start or stalls immediately, this is a sign of a malfunction of the start relay or the compressor itself. If the click is rare (once every few hours) and after it the work continues, this may be a normal switching of modes.
Does the voltage in the network affect the operating time?
Yes, low voltage in the network (less than 190-200 Volts) can prevent the compressor from starting normally or cause it to work with overload, which increases the cooling time. In such cases, it is recommended to use a voltage stabilizer.
Do you need to defrost a new refrigerator before use?
Modern refrigerators, even with the No Frost system, do not require defrosting before first use, if they are new. However, if the equipment was in a warehouse at sub-zero temperatures, it must be allowed to warm up to room temperature (3-4 hours) before being plugged in to avoid condensation inside the electronics.