How many hours does the refrigerator work after defrosting - norms, reasons for deviations and solutions

After defrosting, the refrigerator often behaves differently than usual: it may not turn off for a long time, hum loudly, or, conversely, turn off too quickly. These changes frighten owners, especially when it comes to expensive equipment with a system No Frost or an inverter compressor. But in 90% of cases, this behavior is a normal reaction to resetting the temperature regime.

In this article we will look at how long should the refrigerator work after defrosting depending on the type of system (drip, No Frost, Low Frost), chamber volume and external conditions. Let's explain why modern models Samsung, LG or Atlant may not turn off for 6-8 hours - and when is this a reason to call a repairman. We will also give a checklist of actions if the refrigerator works continuously for a day or more after defrosting.

Why does the refrigerator work for a long time after defrosting - the physics of the process

When you turn off the refrigerator to defrost, the temperature inside the chambers rises to room temperature (20–25°C). After turning on, the compressor needs not only to cool the air to the set +4…+6°C (in the main chamber) and -18°C (in the freezer), but also:

• 🧊 Cool the walls chambers —they have heated up during defrosting and now give off heat back.
• ❄️ Restore the ice “coat” on the evaporator (in models with a drip system or Low Frost).
• 🔄 Stabilize the circulation of the refrigerant —after idle time, freon is distributed unevenly throughout the system.
• 📦 Cool the loaded products —if you immediately put warm dishes in, the load on the compressor increases.

On average, this takes about 2 to 6 hours under standard conditions (room temperature, half-empty chambers, working equipment). data-i="66">2 to 6 hours

Inverter compressors (installed in models Samsung RB30A3200SA, LG GA-B409SLGL) work differently: they do not turn off completely, but reduce the power to a minimum. Therefore, it may seem that the refrigerator “does not turn off,” although in fact it has simply switched to economy mode.

Refrigerator operating standards after defrosting by type of system

The time of continuous operation of the compressor depends on type of defrosting and the design of the refrigerator. Below are averaged data for popular systems (at room temperature 20–25°C and half-empty chambers).

The critical indicator for all types of refrigerators is continuous operation of the compressor for more than 24 hours without shutting down. This indicates a malfunction (freon leak, thermostat failure, clogged capillary tube) and requires diagnostics.

5 reasons why the refrigerator does not turn off after defrosting

If more than 8-10 hours have passed and the compressor is still running without pauses, check these factors:

1. High room temperature (above 30°C). The refrigerator is forced to compensate for external heat, especially if it is located next to a stove or window on the sunny side.
2. Overload with productsIf you have filled the chambers with warm dishes (soups, roasts), the compressor will require 30–50% more time to cool.
3. Faulty thermostat or temperature sensor. If a failure occurs, the control module does not receive a signal that the set temperature has been reached and does not turn off the compressor.
4. Refrigerant leak. Signs: the motor runs non-stop, but the freezer does not freeze well, and rust appears on the back wall (due to corrosion of the tubes).
5. Clogging. capillary tubeFreon does not circulate normally, the compressor overheats, but cooling does not occur. hot condenser grid.

How to check if the thermostat is working?

Unplug the refrigerator, remove all the food and leave the door open for 1-2 hours. Then turn it on again and set the thermostat to minimum cooling (+2°C). If the compressor does not turn off after 30–40 minutes, the sensor is faulty.

If you suspect a breakdown, do not forcefully turn off the refrigerator - this may aggravate the problem (for example, lead to jamming of the compressor.

What to do if the refrigerator works for a day after defrosting

The algorithm of actions depends on the symptoms. Follow this checklist:

Check whether the door is closed (even a small gap interferes with cooling)|

Make sure that the super freeze mode is not turned on (Super Freeze)|

Move the refrigerator 5-10 cm away from the wall for better ventilation|

Wipe the dust from the condenser (grid on the back wall)|

Call service if the motor is hot and not turns off for more than 24 hours -->

If the refrigerator freezes normallybut does not turn off, there are two possible reasons:

1. Board failure controls (requires flashing or replacement).
2. Incorrect settings (for example, mode Vacation or Party Modeis set, which change the compressor operation algorithm).

For models with No Frost (for example, Bosch KGE39XW2AR) another problem is typical: fan icing. If ice blocks the blades, the motor runs without stopping, but the cold does not enter the chambers. The solution is to defrost the refrigerator again for 12-24 hours.

How to speed up the temperature stabilization after defrosting

To make the refrigerator come back to normal faster. normal operation, follow these tips:

• ⏳ Do not load the products immediately. Place them in the freezer 30 minutes before loading the products - this will reduce the load on the compressor.. Wait 1-2 hours until the temperature in the chambers drops to +10°C.
• 🥶 Use cold accumulators. Put them in the freezer 30 minutes before loading food - this will reduce the load on the compressor.
• 🔌 Turn off the accelerated cooling modes (Fast Cool, Power Cool) 2-3 hours after switching on.
• 🌡️ Set the optimal temperature: +4°C for the refrigerator compartment and -18°C for the freezer.

For refrigerators with No Frost useful after defrosting dry the chambers for 30–60 minutes with the door open. This will prevent the formation of condensation on the seals and improve heat transfer.

When to call a professional: 3 warning signs

Not all problems after defrosting can be solved on your own. Contact the service center if:

⚠️ Attention: If the refrigerator runs without stopping after defrosting, but at the same time the freezer does not freeze (the temperature is higher -12°C), this is a sign of a freon leak or a clogged system. Self-repair is fraught compressor breakdown.

1. The compressor turns off for 5-10 seconds and turns on again (symptom motor jamming or malfunction of the start relay).
2. Oil stains have appeared on the back wall is a sign depressurization of the circuit and a refrigerant leak.
3. The refrigerator makes loud clicks or rattling noises (problems with the fan in the systems are possible No Frost or loosening of the compressor fastenings).

Cost of diagnostics in service centers starts from 1,500 rubles. Average repair cost:

• Replacement of the thermostat - 2,500–4,000 RUR.
• Refilling with freon - 3,000–6,000 RUR.
• Repair of the control board – 4,000–8,000 ₽.

For refrigerators under warranty (usually 1-3 years), repairs are free, but only if the breakdown is not related to improper operation (for example, mechanical damage when defrosting the ice maker).

FAQ: Frequently asked questions about operation of the refrigerator after defrosting

How long should a No Frost refrigerator work after defrosting?

Models with No Frost (for example, Indesit DF 5200 W) normally work 4–6 hours without shutting down after defrosting. If the compressor does not stop for more than 10 hours, check:

• Is the door closed (try applying a piece of paper - if it falls out, the seal is worn out).
• Is the mode not turned on Super Cool.
• Indoor temperature (with >30°C the operating time increases by 30–50%).

Why does the refrigerator work for 12 hours after defrosting and does not turn off?

Reasons:

1. Overload with food - if you clogged the chambers warm dishes, the compressor will take up to 12–14 hours to cool.
2. Faulty defrost sensor (in models with No Frost).
3. Freon leak —the motor runs “idle”, but the cold does not accumulate.

If after 12 hours the freezer does not fill up -18°C, turn off the refrigerator and call a technician.

Is it normal that a refrigerator with an inverter compressor does not turn off?

Yes, this is a feature of inverter models (LG GA-B489YDQL, Panasonic NR-BN30AW1) They do not turn off completely, but smoothly reduce power after reaching the set temperature. In the first 6-8 hours after defrosting, the compressor can operate at full power, then it will switch to economical mode (you will hear that the motor has become quieter).

Is it possible to turn on the refrigerator immediately after defrosting?

It is possible, but not recommended. Optimal:

1. Wipe the chambers dry.
2. Leave the doors open for 30-60 minutes to ventilate.
3. Turn on the refrigerator and wait 1-2 hours before loading food.

This will prevent condensation from forming and shorten the operating time of the compressor.

Why does the refrigerator work after defrosting, but does not freeze?

Probable reasons:

• Freon leak - check for oil stains on the back wall.
• Clogged capillary tube - condenser (grid at the back) will be hot, and the freezer will be warm.
• Fan failure (in models with No Frost) - a hum is heard, but the cold is not distributed.

It is impossible to eliminate these faults on your own - special equipment is required (pressure gauge, vacuum pump).