When the refrigerator LG stops freezing or makes uncharacteristic sounds, the first thought is a freon leak. But how do you know how much refrigerant should be in the system? The answer depends on the model, type of compressor and even year of manufacture. In this article we have collected accurate data on the volume of freon for refrigerators LG of different series, explained how to determine its quantity without equipment, and warned about the risks of self-refueling.
Important: the information is relevant for household refrigerators LG with compressors Linear Inverter, Smart Inverter and classic piston ones. For industrial models or equipment with a system Door-in-Door standards may differ - check with the service center.
Why is it important to know the amount of freon in an LG refrigerator
Freon is a refrigerant that circulates in a closed circuit, removing heat from the chambers. It lack or excess leads to:
- ❄️ Insufficient cooling (the temperature in the chambers is higher than normal, food spoils faster).
- 🔥 Overheating of the compressor (the refrigerator runs without stopping, risk motor breakdown).
- ⚡ Increased energy consumption (light bills increase by 20-30%).
- 💧 Icing of the evaporator (a thick layer of ice forms on the back wall).
The manufacturer LG calculates the volume of freon taking into account:
- 📏 Total volume of chambers (from 100 to 600 liters).
- 🔄 Compressor type (inverter models require 10-15% less refrigerant).
- 🌡️ Climate class (models for hot climates have an enlarged circuit).
If you are refilling the system after repair, Exceeding the freon norm by 20–30% reduces the service life of the compressor by 30–40%. This is due to an increase in the load on the oil pump and the risk of water hammer.
Table: amount of freon in LG refrigerators by model
Below is a list of popular series LG indicating the type of refrigerant and its volume. The data is based on service manuals and equipment data sheets. Please note: in two-compressor models (for example, LG GC-B247JLV), freon is charged separately into each circuit.
| Model series | Chamber volume (l) | Freon type | Quantity (d) | Compressor type |
|---|---|---|---|---|
| GA-B419, GA-B429 | 300–350 | R134a | 90–110 | Smart Inverter |
| GC-B247, GC-B207 | 200–250 | R600a | 50–65 | Linear Inverter |
| GN-B309, GN-B359 | 280–320 | R134a | 85–100 | Piston |
| GR-B242, GR-B202 | 180–220 | R600a | 45–55 | Smart Inverter |
| GS-X361, GS-X401 (Side-by-Side) | 500–600 | R134a | 140–180 | Double inverter |
For models with a system No Frost (for example, LG GA-B419SQPL) the volume of freon can be 5–10% more due to additional channels in the evaporator. In refrigerators with Total No Frost (full No Frost in both chambers) the difference reaches 15%.
⚠️ Attention: In models LG 2020–2026 with compressors Linear Inverter is used refrigerant R600a (isobutane). It is more environmentally friendly, but requires precise refilling - an excess leads to an explosive situation!
How to determine a freon leak without equipment
If the refrigerator LG does not freeze well, do not rush to blame freon. First check: (a dented seal or a foreign object may be the cause). data-i="110">(at +30°C and above the compressor operates at the limit).
- 🔌 Door closing tightness (a dented seal or a foreign object may be the cause).
- ❄️ Operating mode (possibly activated
Holiday ModeorEco Mode). - 🌡️ Room temperature (at +30°C and above the compressor operates at its limit).
Signs of a real freon leak:
- ⏳ The compressor is working continuously (without shutdown cycles).
- 🧊 Condenser (grid at the back) does not heat up (normally should be warm).
- 💨 You can hear hissing from the system (the characteristic sound of escaping gas).
- 🛠️ You can see on the tubes or in the chamber oil stains (freon comes out along with oil).
Disconnect the refrigerator from the mains for 10 minutes|Check the temperature of the condenser (should cool down)|Turn it back on and listen to the compressor (if there are any extraneous sounds)|Inspect the back wall for oil traces-->
If you find at least 2-3 feature from the list refill yourself. It is recommended. The fact is that in modern models LG it is used sealed system without special equipment (vacuum pump, pressure manifold) you will not be able to:
- 🔧 Properly remove the remaining old freon.
- 🧪 Check the system for leaks (nitrogen test).
- ⚖️ Accurately measure the required amount refrigerant.
Types of freon in LG refrigerators: R134a vs R600a
Until 2015 LG used freon in most models R134a (tetrafluoroethane) year, the company switched to R600a (isobutane) within the framework of environmental standards. The difference between them:
| Parameter | R134a | R600a |
|---|---|---|
| Environmental friendliness (GWP) | 1430 | 3 |
| Energy efficiency | Average | High (+15–20%) |
| Explosive | No | Yes (at a concentration of >31 g/m³) |
| Refilling cost | More expensive | Cheaper |
Important: R134a and R600a are not interchangeable! If your model LG originally had R134a, and the master suggests refilling R600a (or vice versa), this will lead to:
- 🔥 Overheating compressor (different boiling temperatures).
- ⚡ Increased pressure in the circuit (risk of tube rupture).
- ❌ System failure after 1-2 months.
Self-refueling: step-by-step instructions (only for experienced)
If you decide to fill freon yourself, follow this algorithm. Remember: a mistake can cost more than calling a specialist.
Necessary equipment:
- 🔧 Manometric manifold with valves.
- 🧪 Vacuum pump (minimum 2-stage).
- ⚖️ Scales for weighing a cylinder with freon.
- 🔥 Gas burner (for soldering in case of leakage).
- 🛡️ Safety glasses and gloves (frost freezes the skin).
Step-by-step process:
- Unplug refrigerator and defrost it (at least 12 hours).
- Find the service port (usually on the compressor or filter drier). It is closed with a cap with the inscription
SERVICEorCHARGE. - Connect the manifold:
- Blue hose - to the freon cylinder.
- Yellow hose - to the vacuum pump.
- Red hose - to the service port.
- Evacuate the system (20–30 minutes) to pressure
-1 bar. - Refill freon small portions (10–15 g each), controlling the pressure:
- For R134a: discharge pressure - 10-12 bar.
- For R600a: discharge pressure - 6-8 bar.
What to do if you recharged freon?
If you accidentally filled in more than normal, do not turn on the refrigerator! Excess freon leads to water hammer in the compressor. Immediately release excess gas through the service port while monitoring the weight of the cylinder. For R600a even an excess of 5-10 grams is critical!
⚠️ Attention: In models LG with a system DoorCooling+ (for example, GA-B419SQPL) refilling freon requires special adapter to be connected to an additional circuit. Without it, you will not be able to distribute the refrigerant evenly throughout all channels.
How much does it cost to refill freon in an LG refrigerator
The cost of the service depends on:
- 🔧 Freon type:
- R134a — 150–250 rub./10 g.
- R600a —100–180 rub./10 g.
- 🛠️ Difficulties of work:
- Simple refueling - 2000–3500 rubles.
- Refueling with evacuation - 3500–5000 rubles.
- Search for leaks + refueling - 5000–8000 rubles.
- 🏠 Region (in Moscow and St. Petersburg prices for 20–30% higher than in the regions).
Calculation example for the model LG GA-B419SQPL (100 g R134a):
- Freon: 100 g × 20 rub./g = 2000 rub.
- Work (vacuum + refueling) = 3500 rub.
- Total: 5500 rub.
If required soldering pipes (in case of mechanical damage to the circuit), the price increases by 1500–3000 rubles. In service centers LG fixed tariffs apply, but there you often have to wait 1-2 weeks for spare parts.
Frequently asked questions about freon in LG refrigerators
Is it possible to fill an LG refrigerator with freon from an air conditioner?
No! Air conditioners use freon R22 or R410a, which are incompatible with household refrigerators. The pressure and boiling point of these refrigerants are not suitable for compressors. LGAfter such refilling, the equipment will fail in a few days.
How often should you check the freon level?
Under normal conditions, freon does not evaporate - the system is sealed. Checking is required only if there are signs of a leak (see the section above) or after mechanical damage (for example, when transporting a refrigerator) Preventive diagnostics every 5-7 years will not be superfluous, especially for models older than 10 years.
What is dangerous about freon R600a in LG refrigerators?
R600a (isobutane) is a flammable gas. If it leaks in a closed room (kitchen area up to 10 m²), it can create an explosive concentration, however, for this it is necessary for freon to leak out - which is unlikely in household ones. conditions. However, when refueling, ensure ventilation and avoid open flame. more than 30 grams freon - which is unlikely in domestic conditions. However, when refueling, ensure ventilation and avoid open flames.
Why does the LG refrigerator not cool after refueling?
Possible reasons:
- Insufficient amount of freon (check weight of the cylinder before and after refilling).
- There is air or moisture left in the system (re-evacuation is required).
- Clogged filter drier (replacement required).
- Faulty thermostat or temperature sensor.
If the compressor works, but there is no cold, most likely the problem is capillary tube (clogging or break).
Where is the type of freon indicated on the LG refrigerator?
Information about the refrigerant is located:
- On nameplate (metal plate on the back or inside camera).
- In device passport (section "Technical Specifications").
- On compressor (sometimes applied marker).
If there is no data, specify the model of the refrigerator and check on LG official website (enter the serial number in the search field).