The refrigerator does not turn off: reasons for continuous operation and what to do

Is your refrigerator humming around the clock, without stopping for a minute? This is not just an annoying noise - a signal that the equipment is operating in emergency mode. Continuous operation of the compressor leads to increased wear of parts, power surges and the risk of breakdown. In 80% of cases, the problem can be fixed on your own, without resorting to expensive repairs.

In this article we will look all possible reasonswhy the refrigerator does not turn off - from trivial incorrect mode to serious malfunctions such as freon leaks or control board failure. You will learn how to diagnose a problem based on indirect signs (for example, if the freezer is covered with ice and the refrigerator compartment is not cooling well, the thermostat is to blame or sensor), and what to do in each case. For convenience, we have compiled checklist a table of symptoms.

Let us warn you right away: if the refrigerator new (up to 1 year) has never been turned off, this may be normal behavior in the first 2-3 days after switching on (the system gains temperature). In all other cases, read on.

1. The temperature regime is disturbed: why does the refrigerator “not understand” that it is already cold

The most common reason for continuous operation is wrong temperature settings. Modern models (for example Samsung RB30A3200SA or LG GA-B489YEQZ) have separate controls for the refrigerator and freezer compartments. If you accidentally turn the knob to maximum or activate the mode Super Freeze, the compressor will work non-stop, trying to reach the impossible -24°C in the heat.

How to check:

• 🔍 Look at display or mechanical regulator —the temperature in the main chamber should be +4…+6°C, in the freezer -18…-20°C.
• ❄️ Disable the modes Quick freezing, Vacation or Party Mode (if yes).
• 🌡️ Use external thermometer —put it in a glass of water on the middle shelf. If after 2 hours it shows below +2°C, reduce the cooling power.

⚠️ Attention: In refrigerators No Frost (for example, Bosch KGE39XW2AR) continuous operation may be associated with clogged air ducts. If the fan is humming, but no cold is coming in, defrosting is required (see section 4).

2. Failure of the thermostat or temperature sensor: how to check them

Thermostat (in mechanical models) or temperature sensor (in electronic ones) - this is the “brain” that tells the compressor when to turn on or off. If it is broken, the refrigerator will work without stopping, but at the same time the freezer may become covered with ice, and food will thaw in the main chamber.

Signs malfunctions:

• ❄️ In the freezer snow “coat” more than 5 mm thick.
• 🔥 Compressor hot to the touch (normal: warm, but not scalding).
• 📉 Temperature in the refrigerator compartment below +2°C, although the regulator is at a minimum.

How to check the thermostat:

1. Unplug the refrigerator.
2. Remove the protective casing (usually secured with 2-4 screws).
3. Find the thermostat - this is a small box with a tube going to the evaporator.
4. Carefully remove the terminals and call with a multimeter in resistance mode. At room temperature, the resistance should be 0 Ohm (closed), when cooling the tube with ice - ∞ (open).

Where Is the thermostat located in the Atlant and Indesit refrigerators?

In models Atlant MXM 2835-90 and Indesit DF 4200 W the thermostat is located behind a plastic panel inside the refrigerator compartment (on the right or top). To get to it, you need to remove the shelf and unscrew 2 screws.

⚠️ Attention: In refrigerators with electronic control (for example, Liebherr CNef 4315) instead of a thermostat, thermistoris used. It is checked by measuring resistance at different temperatures (standard: 5–10 kOhm at +20°C). If the values ​​do not change, the sensor must be replaced.

3. Freon leak: how to recognize and what to do

Freon is a refrigerant that circulates through the system and removes heat. If it appears somewhere (most often in the evaporator or door heating circuit), the gas evaporates and the refrigerator stops cooling. In this case, the compressor works without stopping, trying to compensate for the loss of cold. microcrack (most often in the evaporator or door heating circuit), the gas evaporates and the refrigerator stops cooling. In this case, the compressor works without stopping, trying to compensate for the loss of cold.

Signs of a leak:

• 🧊 Condenser (rear grille) room temperature (normally it should heat up).
• ❄️ Freezer does not freeze, and the refrigerator compartment is too warm.
• 🔧 On the floor under the refrigerator oily stains (freon is mixed with compressor oil).

What to do:

1. Turn off the refrigerator and defrost it for 12 hours.
2. Check the integrity of the tubes - cracks are often visible visually (especially in solder areas).
3. If a leak is confirmed - Do not try to fill freon yourself. This is dangerous (gas under pressure) and requires special equipment.

⚠️ Attention: If the refrigerator over 10 years and it uses freon R-12 or R-22, its filling may be unprofitable - modern refrigerants (R-134a, R-600a) are incompatible with old systems. In this case, it is cheaper to buy a new refrigerator.

4. No Frost system clogged: why the fan does not turn off

In refrigerators with a system No Frost (for example, Samsung RL-34 EBMG or BEKO GNE 114620 X) not only the compressor is responsible for cooling, but also fanwhich drives the cold air through the chambers. If the air ducts are clogged with ice or dust, the fan runs non-stop and the refrigerator does not turn off.

How to clean the system:

The problem often lies in frozen drainage hole - the water does not drain, ice forms, and the fan cannot stop. To prevent re-icing:

• 🧼 Once every 6 months, wash the drainage warm water and soda.
• 🚪 Do not put in the refrigerator hot foods —steam condenses and freezes.
• 📦 Check the door seals - if they are torn, moisture enters the system.

5. A malfunction of the compressor or start relay

The compressor is the “heart” of the refrigerator. If it is worn out or the piston is stuck, the engine will try to start again and again, but will not be able to gain the required power. As a result, the refrigerator does not turn off, but does not cool either (or does it very weakly).

Signs of a compressor failure:

• 🔊 Compressor buzzes, but does not start (relay clicks are heard).
• 🔥 Motor housing scalding hot (norm: up to +60°C).
• 📉 Voltage on the windings different from the nominal (checked with a multimeter).

How to check the start relay:

1. Unplug the refrigerator and remove relay (usually mounted next to the compressor).
2. Shake it - if you hear it knock, it means the contacts are burnt.
3. Ring the relay coil: there should be resistance 20–40 Ohm.

⚠️ Attention: If the compressor does not start at allbut the relay clicks, the problem may be in winding breakage. In this case, the repair will cost more than a new refrigerator (compressor price + labor = 70–80% of the cost of the equipment).

6. Problems with the control board: when the “brains” of the refrigerator fail

In modern models (for example, Haier A3FE742CGMJ or Gorenje NRK 6191 E) the electronic control boardis responsible for the operation of all systems. If it fails (due to a power surge, moisture or a manufacturing defect), the refrigerator may:

• 🔄 Turn on and off every 5-10 seconds.
• 📛 Show errors on the display (E1, F3, H1).
• 🔌 Do not respond to button presses.

What to do:

1. Turn off the refrigerator for 10 minutes - sometimes it helps reboot.
2. Check fuse on the board (it may burn out during a power surge).
3. If the board is swollen, turned black or smells like burning -it needs to be replaced.

⚠️ Attention: The control board is one of the most expensive parts (from 5,000 to 15,000 rubles). If the refrigerator is more than 7 years old, repairs may be unprofitable. Compare the cost of the spare part with the price of new equipment.

7. External factors: why the refrigerator does not turn off due to the environment

Sometimes the problem lies not in the refrigerator, but in its operating conditions. data-i="271">(above +30°C). The compressor does not have time to cool the chambers.This is what can affect continuous operation:

• 🌡️ High temperature in the room (above +30°C). The compressor does not have time to cool the chambers.
• 🔌 Low voltage in the network (below 200 V).
• 🚪 Frequent opening of the door or damaged seal (warm air enters the chamber).
• ☀️ Direct sunlight to the housing or installation next to the stove/battery.

How eliminate:

• 📏 Move the refrigerator away from the wall by 5–10 cm for better ventilation.
• 🔧 Replace sealing rubberif it is cracked (it is worth 500–1,500 ₽).
• 🌡️ Install climate control indoors or move the refrigerator to a cooler place.

⚠️ Attention: If the refrigerator is in garage or dacha without heating, in winter it may not turn off because the temperature around is too low. In this case, it will help climate class regulator (for example, Winter Kit for models Indesit or Ariston).

What to do if the refrigerator does not turn off: step-by-step algorithm

If you did not find the problem yourself, use these instructions:

1. Step 1. Disconnect the refrigerator from the network for 1 hour. If after turning it on it worked normally, the problem was in compressor overheating.
2. Step 2. Check code errors on the display (if available): Explanations for popular brands:
   • Samsung: E1 —problem with the sensor, E3 —freon leak.
   • LG: ER DH —malfunction of the defrost heater.
   • Atlant: F2 —fan failure.

Step 3. If the refrigerator over 5 years and repairs will cost more than 50% of its cost - consider buying a new model.

⚠️ Attention: Some service centers offer “cheap repairs” using used spare parts or analogues. This may lead to repeated failure. Always request warranty on labor and parts (minimum 6 months).

FAQ: Frequently asked questions about the continuous operation of the refrigerator

Is it possible to operate the refrigerator if it does not turn off?

For a short time (1-2 days) - yes, but this leads to increased wear of the compressor and the risk of breakdown. If the problem is not resolved within a week, the refrigerator. may fail completely. It is especially dangerous to ignore motor overheating this can lead to fire.

How much does it cost to repair if the refrigerator does not turn off?

The price depends on the reason:

• Replacing the thermostat: 1 500–3 000 ₽.
• Repairing the control board: 3 000–8 000 ₽.
• Freon charging: 4 000–10 000 ₽ (depending on the type of refrigerant).
• Replacement of the compressor: 8 000–15 000 ₽.

The cost of work at the service center is from 1,000 to 3,000 RUR.

Why does the new refrigerator work without stopping for the first days?

This is normal! current 24–72 hours After the first turn on, the refrigerator reaches operating temperature. If after 3 days it does not start to turn off, check the settings or contact the store (possible defect).

How to check if the compressor is working without disassembling the refrigerator?

Turn on the refrigerator and listen:

• If the compressor buzzes, but does not start the problem is in start relay or the winding.
• If it start, but after 5-10 seconds it turns off - it may the piston is jammed.
• If it works, but does not cool - check freon leak or capillary tube is clogged.

Also pay attention to condenser temperature (grid at the back): normally it should heat up.

Can the refrigerator not turn off due to a dirty condenser?

Yes! If the grill on the back wall is clogged with dust, heat exchange worsensand the compressor runs longer than usual. Clean it. condenser with a vacuum cleaner or brush (after turning off the refrigerator!). Do this every 6 months.