The back wall of the Biryusa refrigerator is freezing: reasons and what to do

If you notice that a thick layer of ice or frost forms on the back wall of the refrigerator, this does not always indicate a breakdown. In some cases, the problem is solved by a simple adjustment, but sometimes a specialist’s intervention is required. Biryusa a thick layer of ice or frost forms on the back wall; this does not always indicate a breakdown. In some cases, the problem can be solved with a simple setup, but sometimes a specialist intervention is required. Noah's Ark made of ice on the wall not only spoils the appearance, but also signals problems in the operation of the cooling system.

Biryusa is a popular Russian brand whose refrigerators are known for their reliability, but even they are not immune to typical malfunctions. In this article we will analyze frosting of the back wall, from trivial to serious, and give step-by-step instructions for elimination. You will learn when you can handle it yourself, and when it is better to call a specialist. all possible reasons freezing of the back wall, from trivial to serious, and we will give step-by-step instructions for elimination. You will learn when you can handle it yourself and when it is better to call a specialist.

A feature of refrigerators Biryusa is use drip defrosting system in most models. If ice builds up evenly across the entire back wall, this is often due to the evaporator operating. But when ice forms locally (for example, only in one corner) or is accompanied by other symptoms (noise, poor cooling), we are talking about a specific malfunction.

1. Violation of operating rules: 3 common mistakes

Most often, the back wall of the refrigerator Biryusa freezes due to improper use. Check if you are making these mistakes:

• 🔌 Always open door. Even small gaps allow warm air to enter, which condenses on the cold wall. This is especially true for models with magnetic sealwhich loses elasticity over time.
• 🥶 Loading hot products. Steam from pots or pans settles on the evaporator, forming ice. The instructions for Biryusa clearly state: the products must cool to room temperature.
• 🧊 Excessive loading. If food is tightly adjacent to the back wall, air circulation is disrupted and moisture does not have time to evaporate.

Leakage test: take a sheet of paper, close the refrigerator door, pressing it between the seal and the body. If the sheet is easily pulled out, the seal is worn out and needs to be replaced. For models Biryusa 130 and Biryusa 140 original seals can be found by article numbers RT-0001 (upper) and RT-0002 (lower).

⚠️ Attention: If the refrigerator Biryusa with a system No Frost (for example Biryusa 220K), freezing of the rear wall may indicate a malfunction of the fan or defrost timer. In this case, a specialist diagnosis is required.

2. Malfunction of the thermostat or temperature sensor

The thermostat (or thermostat) is responsible for turning the compressor on/off. If it does not work correctly, the compressor may not turning off on timewhich leads to freezing of the rear wall. For refrigerators Biryusa typical signs of thermostat failure:

• 📉 The temperature in the chamber drops below +2°C (at normal +4…+5°C).
• ❄️ Ice builds up even when the door is rarely opened.
• 🔊 The compressor runs without stopping or turns on too often.

How to check the thermostat:

1. Disconnect the refrigerator from network.
2. Remove the thermostat protective casing (usually located inside the chamber, behind the plastic panel).
3. Test the contacts with a multimeter in resistance testing mode. At room temperature, the resistance should be 0 Ohm (contacts closed).
4. Place the sensor in ice for 10-15 minutes - the resistance should become ∞ (open contacts).

If the thermostat does not respond to temperature changes, it must be replaced. For models Biryusa 106 and Biryusa 110 the thermostat is suitable K-59 (article TAM-133-1M).

3. Clogged drainage system: why the water does not drain

In refrigerators Biryusa s drip defrosting system, condensate flows down the back wall into the drainage hole, and then evaporates above the compressor. If the hole is clogged, water accumulates and freezes, forming an ice crust.

Causes of blockage:

• 🍂 Dust, crumbs or food particles got into the drain.
• 🧴 Thickened condensation due to infrequent cleaning.
• 🐭 Foreign objects (for example, pieces of packaging).

How to clean the drain:

1. Unplug the refrigerator and defrost it.
2. Find the drainage hole at the bottom of the back wall (in models Biryusa 18C and Biryusa 22 it is covered with a plastic plug).
3. Use wire with a diameter of 2-3 mm or a special brush for cleaning.
4. Rinse the system with warm water and soda (1 tablespoon per 1 liter of water).

⚠️ Attention: Do not use sharp objects (needles, knitting needles) to clear the drainage - they can damage the plastic tubes. If the blockage is deep, it is better to call a specialist.

4. Freon leak or compressor malfunction

If the back wall freezes unevenly (for example, only in one corner) or the refrigerator does not cool well, it is possible refrigerant leak (freon). specialist.

Signs of a freon leak:

• ❄️ Ice builds up in only one place (usually where the evaporator is located).
• 🌡️ The temperature in the chamber is increased, the compressor works without stopping.
• 🔊 Extraneous sounds (hissing, gurgling) during operation.

Other problems with the compressor:

• 🔋 Interturn short circuit — the compressor heats up, but does not create required pressure.
• 🛠️ Wear of the piston group —the refrigerator turns on, but does not cool.

To diagnose a leak, technicians use leak detector or a soap solution (in bubbles appear in places of leakage). Repair includes:

1. Detection of a leak (most often in heating circuit or evaporator).
2. Repairing damage (soldering, tube replacement).
3. Evacuation of the system and filling with new freon (usually R-134a or R-600a for modern models Biryusa).

⚠️ Attention: Self-filling freon is dangerous! The refrigerant is toxic, and the wrong one dosage may damage the compressor. Contact only certified service centers.

5. Malfunction of the defrosting system (for models with No Frost)

Refrigerators Biryusa with the system No Frost (for example, Biryusa. 220K or Biryusa 148) do not require manual defrosting, but their defrosting system may fail. If ice forms on the back wall of the freezer, check:

• 🌀 Fan —if it does not work, the cold is not distributed evenly.
• ⏱️ Defrost timer —may jam in the “cooling” position.
• 🔥 Defrost heating element —if it burns out, the ice does not melt during the defrost cycle.

How to check the defrosting heating element:

1. Unplug the refrigerator and remove the back panel freezer compartment.
2. Find the heating element (usually located under the evaporator).
3. Test it with a multimeter - the resistance should be in the range 20–40 Ohm.

If the heating element is faulty, it must be replaced. models Biryusa s No Frost fit heaters with article numbers 2108-3711020 or 2108-3711020-10.

What happens if you ignore the No Frost fault?

If not repair the defrosting system, ice will block the fan, which will lead to overheating of the compressor. In the worst case, the refrigerator will completely fail, and the cost of repair will exceed 50% of the price of a new device.

6. Damage to the thermal insulation or damage to the housing

If the refrigerator Biryusa is old (over 10 years old), problems may occur. with thermal insulation. Over time polyurethane foam the walls lose their properties, and microcracks in the body allow warm air to pass through.

How to detect damage:

• 🔍 Inspect the door seal for cracks.
• 🧊 Check for condensation on the outer walls (indicates depressurization).
• 📏 Measure the temperature at different points in the chamber - if the difference exceeds 3–4°C, the insulation is broken.

Restoring thermal insulation:

It is difficult to repair the insulation on your own, but you can temporarily improve the situation:

1. Seal visible cracks in the housing sealant for refrigerators (for example, Loctite 577).
2. Install an additional seal on the door (sold in the form of a tape).
3. Do not place the refrigerator next to heat sources (radiator, stove).

B models Biryusa 132 i Biryusa. 145 there is often a factory assembly defect: thin thermal insulation in the area of the door hinge. If your refrigerator is from this series, check this area for condensation.

7. Incorrect installation of the refrigerator

Even a new refrigerator Biryusa can freeze if it is installed incorrectly. Pay attention to:

• 📏 Tilt. or with a slight tilt back (1-2°) so that the door closes under its own weight.
• 🌡️ Room temperature. If the room is hotter than +30°C, the compressor wears out, which leads to freezing.
• 🔌 Network voltage. Voltage surges disrupt the operation of the thermostat. Use stabilizer (for example, Resanta ACH-1000/1-C).

How to level a refrigerator:

1. Use building level to check.
2. Adjust the height of the legs (in models Turk they have thread).
3. If the floor is uneven, place rubber pads under the legs Rubber pads.

FAQ: Frequently asked questions about freezing of the Biryusa refrigerator

Is it possible to defrost a Biryusa refrigerator with a hairdryer?

No! Hot air can damage the plastic parts and seal. Use only natural thawing or warm water (not higher than +40°C) in the pan.

How long does it take to defrost the Biryusa refrigerator?

Depending on the thickness of the ice - from 4 to 12 hours. It is not recommended to speed up the process. After defrosting, wipe the walls with a dry cloth and leave the door open for 1 hour to dry.

Why does ice appear again after a week?

This indicates unresolved cause: clogged drainage, faulty thermostat or freon leak. If the problem persists, contact service.

Can I use a Biryusa refrigerator with a frozen back wall?

For a short time - yes, but this will lead to increased energy consumption and the risk of compressor breakdown. Long-term operation in this mode reduces the life of the refrigerator by 30–40%.

What temperature should be in the Biryusa refrigerator?

Optimal values:

• Refrigerator compartment: +4…+5°C.
• Freezer compartment: −18°C (for models with *** on the panel).

Check the temperature with a thermometer, and not on the regulator scale - it may not correspond to real values.