Filling the refrigerator with freon with your own hands: a complete guide with photos and diagrams

When the refrigerator stops freezing and the compressor runs non-stop, the first thought is a freon leak. This problem occurs in both old Samsung RL-33 and Indesit BIA 16and new models with the No Frostsystem. Charging refrigerant is a task that not every technician can handle, but with the right approach and tools, you can do it yourself.

In this article you will find step-by-step instructions how to refill a refrigerator with freon, including choosing a refrigerant, diagnosing leaks and setting pressure. We will analyze what errors lead to repeated breakdowns, how to avoid compressor overheating and why it cannot be used R-12 in modern models. If you have never worked with refrigeration equipment, start with theory - this will save time and nerves.

⚠️ Important: Working with freon requires compliance with safety precautions. Refrigerant R-600a (isobutane) is explosive at a concentration in air of more than 1.3%, and R-134a can cause frostbite upon contact with skin. Carry out all operations in a ventilated area, away from open fire.

1. Signs of a freon leak in the refrigerator

The first signal is that the refrigerator is not cooling, but the compressor is running without interruption. However, this may indicate other problems: a malfunction of the thermostat, a clogged capillary tube or a broken fan No Frost. How to distinguish a freon leak?

Pay attention to these symptoms:

• 🔍 The condenser does not heat up. In normal mode, the grille on the back wall should be warm (40–50°C). If it is cold, the refrigerant does not circulate.
• ❄️ Frost is only in one corner of the freezer. If there is a leak, freon evaporates unevenly, so ice forms locally and not over the entire surface.
• 🕒 The compressor turns on for 2-3 seconds and turns off. This is a sign of a critical drop in pressure in the system.
• 💧 Oil stains on the floor under refrigerator. Freon dissolves in the compressor oil, and if there is a leak, it flows out along with the refrigerant.

If at least two of these signs coincide, the probability of a leak is 90%. For final diagnosis you will need pressure manifold a leak detector. At home, you can use a soap solution: apply it to suspected leaks (soldered seams, tubes) and watch for bubbles.

2. Tools and materials for refueling

It is impossible to refuel a refrigerator without specialized equipment. Here is the minimum set you will need:

Also prepare:

• 🔧 A set of wrenches (for unscrewing service ports).
• 🧴 Flux and solder for copper (for example, Castolin 190 or Harris Stay-Silv).
• 🧤 Protective gloves and glasses (freon and oil corrode the skin).
• 📏 Vernier calipers (for measuring the diameter of tubes when replacing).

⚠️ Attention: Do not use R-12 (dichlorodifluoromethane) - it has been banned by the Montreal Protocol since 2020 and is incompatible with modern compressors. Suitable for most household refrigerators R-134a (for models before 2010) or R-600a (for new ones, including LG GA-B489 And ATLANT XM 4625).

3. Step-by-step instructions: how to fill a refrigerator with freon

The filling process consists of 5 stages: leakage diagnosis → vacuuming → soldering (if necessary) → filling → checking operation. Let's consider each step in detail.

Step 1: Finding and eliminating leaks

If the leak is visible (for example, a crack in the tube), solder it with solder. To do this:

1. Clean the soldering area from oxides. sandpaper.
2. Apply flux (for example, F-SW21).
3. Heat the tube with a torch and apply solder in an even layer.
4. Blow the tube with nitrogen to remove scale.

If no leak is visible, use leak detector. The most common places:

• 🔗 Tube connections with the compressor.
• 🌀 Capillary tube (thin copper tube in front of the evaporator).
• 🧊 Freezer evaporator (especially in models with No Frost).

Step 2: Evacuation of the system

After eliminating the leak, it is necessary to remove moisture and air from the system. To do this:

1. Connect vacuum pump to the service port (usually located on the compressor).
2. Turn on the pump for 15–20 minutes. The pressure should drop to -1 bar.
3. Close the valve and watch the pressure gauge for 10 minutes. If the pressure does not rise, there are no leaks.

Eliminate everything. leaks|Check the tightness of the soldering with a soap solution|Connect the pressure manifold|Evacuate the system for at least 15 minutes-->

Step 3: Filling with freon

Now you can charge the refrigerant Algorithm:

1. Connect the cylinder. with freon to the collector through blue hose (low pressure).
2. Open the cylinder valve and slowly unscrew the filling valve, monitoring the pressure using the pressure gauge.
3. For R-134a normal suction pressure: 0.2–0.5 bar (with the compressor turned off).
4. Turn on the refrigerator and add freon until the discharge pressure reaches 8–12 bar (depending on the model).

⚠️ Attention: Do not refill the system! Excess freon leads to compressor water hammer. If the discharge pressure exceeds 15 bar, immediately bleed off the excess refrigerant.

Step 4: Checking operation

After refueling:

• Check the temperature of the condenser - it should heat up to 50–60°C.
• Make sure that the freezer is evenly covered with frost.
• Listen to the compressor: it should work in cycles (turn on for 10-15 minutes, then turn off).

1) The tightness of the system (vacuum again).

2) The operation of the thermostat (perhaps it does not give a signal to turn on).

3) The condition of the capillary tube (there may be a blockage).-->

4. Which freon to use for a refrigerator?

The choice of refrigerant depends on the year of manufacture and model of the refrigerator. An error in selection will lead to compressor failure or poor cooling.

🔎 How to find out what kind of freon is in your refrigerator?

• Look at the compressor nameplate - the brand of refrigerant is indicated there.
• In the operating instructions (section "Technical Specifications").
• On the sticker inside the refrigerator compartment (sometimes indicated next to the serial number).

If you are not sure of the type of freon, never fill the system by eye - this will lead to compressor failure. It is better to contact a service center to identify the refrigerant.

5. refueling

Even experienced craftsmen sometimes make mistakes that lead to repeated leaks or breakdown of the refrigerator. Here's what not to do:

• ❌ Use inappropriate freon. For example, refueling R-600a instead R-134a will damage the compressor in 1-2 minutes. month.
• ❌ Do not vacuum the system. Humidity in the circuit leads to the formation of ice plugs in the capillary tube.
• ❌ Overheat the tubes when soldering. This destroys the copper structure and provokes new ones leaks.
• ❌ Fill by eye, without a pressure gauge. Underfilling worsens cooling, overfilling breaks the compressor.

💡 Advice from the experts: If after refueling the refrigerator works, but does not freezes, check thermostat. Sometimes the problem is not in the freon, but in a faulty temperature sensor. Test it with a multimeter - the resistance should change when you turn the knob.

What to do if after refueling the compressor does not turn on?

If the compressor does not start, there are 3 possible reasons:

1) Overheat protection has tripped — wait 30 minutes and try again.

2) The starting relay is faulty —check it with a tester (the resistance between the contacts should be 20–40 Ohm).

3) Short circuit in the compressor winding —in this case, a new compressor is needed.

6. Safety precautions when working with freon

Freon is not just a “gas for refrigerators.” It can cause poisoning, frostbite, or even an explosion (in the case of R-600aFreon vapors are heavier than air and accumulate at the bottom, which can lead to suffocation.

• 😷 Wear a respirator. Freon vapor is heavier than air and accumulates below, which can lead to suffocation.
• 🔥 Exclude open fire. R-600a ignites at a concentration of 1.3% in the air.
• 🧤 Wear gloves. Liquid freon causes frostbite upon contact with skin.
• 🪟 Ventilate the room. After refueling, leave the windows open for 1-2 hours.

⚠️ Attention: If you feel dizzy or nauseous while working, immediately leave the room and ventilate it. Symptoms of freon poisoning: weakness, vomiting, loss of coordination. In severe cases. medical assistance is required.

📌 Disposal freon: Do not throw away cylinders with remaining refrigerant in the trash! Take them to a hazardous waste collection point or service center. In Moscow and St. Petersburg, this can be done free of charge through the Ecosystem system.

7. When is it better to call a technician?

Not all breakdowns can be repaired yourself. Contact a professional if:

• 🔧 A freon leak occurred in foamed part of the case (refrigerator disassembly is required).
• ⚡ The compressor does not turn on after refueling (the winding may have burned out).
• ❄️ The refrigerator freezes, but does not turn off (the thermostat or electronic unit is faulty).
• 💰 You are not confident in their skills (a mistake when soldering or refilling will cost more than calling a technician).

💡 How much does it cost to refill freon at a service center? Prices in 2026:

• R-134a: from 2,500 to 4,000 rubles (depending on from volume).
• R-600a: from 3,000 to 5,000 ₽ (due to the risk of explosion, the work is more expensive).
• Leak elimination + refueling: from 5,000 to 8,000 ₽.

⚠️ Attention: If the technician offers refueling refrigerator R-12 or R-22, refuse - these refrigerants are prohibited and incompatible with modern compressors.

FAQ: Frequently asked questions about refilling the refrigerator

❓ Is it possible to refuel a refrigerator without a vacuum pump?

No. Without vacuuming, moisture remains in the system, which will freeze in the capillary tube and block the circulation of freon. This will lead to repeated breakdown in 1-2 weeks.

❓ What freon is in. refrigerator ATLANT 2020?

Most models ATLANT after 2018 use R-600a (isobutane). Check the sticker on the compressor - it should say “Refrigerant: R-600a».

❓ How much? Is freon needed for refilling?

The volume depends on the model:

• Single-chamber refrigerators: 50–80 g.
• Double-chamber refrigerators: 100–150 g.
• Side-by-Side: 200–300 g.

The exact amount is indicated on the compressor nameplate (parameter “Refrigerant Charge»).

❓ Why doesn’t the refrigerator freeze after refueling?

Possible reasons:

1. Not enough freon (check the pressure discharge - should be 8–12 bar).
2. Clog in the capillary tube (need to be purged with nitrogen).
3. The thermostat or electronic control unit is faulty.

Start by checking the pressure with a pressure gauge.

❓ Is it possible to fill a refrigerator with car freon from a can?

No! Automotive freon R-134a contains additives that are incompatible with refrigeration systems. In addition, cans for cars use a different oil, which will thicken at low temperatures and block the compressor.