The back wall in the Stinol refrigerator is freezing: reasons and what to do

Have you opened the refrigerator Stinoland there is a thick layer of ice or frost on the back wall? This is not just an aesthetic problem. Ice interferes with normal air circulation, causes the compressor to wear out and can lead to food spoilage. In older models Stinol (for example, Stinol 100 or Stinol 102) this is often associated with the drip defrosting system, and in new ones - with malfunctions No Frost.

In this article we will analyze 7 main reasonswhy the back wall freezes in refrigerator Stinol, - from a banal door seal not tightly closed to serious damage to the thermostat or evaporator. You will learn how to diagnose the problem yourself, when you can get by with simple defrosting, and when it’s time to call a professional. And also - unique nuances of Stinol models with a top freezer, where ice on the back wall often signals a clogged drainage hole in a crying evaporator.

1. Violation of tightness: seal or door

The most common cause of ice is warm airpenetrating into the chamber due to a loosely closed door or a worn seal. In refrigerators Stinol with system drop defrosting (models Stinol 101, Stinol 103) this leads to condensation on the back wall, which then freezes.

How to check:

• 🔍 Test with a sheet of paper: close the door by inserting a sheet between the seal and the body. If the sheet is easily pulled out, the seal is broken.
• 💡 Visual inspection: the seal must be clean, without cracks or deformations. Dirt often accumulates in the corners, preventing a tight seal.
• 🧊 Checking the hinges: a skewed door (for example, due to loose hinges) also allows heat to pass through. Try to slightly lift the door - if it “walks”, the hinges need to be adjusted.

If the seal is damaged, you can try restore it:

1. Rinse the rubber band with warm water and soap, then dry.
2. Apply a thin layer of silicone grease (do not use vegetable oil!).
3. If the seal is deformed, immerse it in hot water (not boiling water!) for 5-10 minutes, then put it in place.

⚠️ Attention! In models Stinol s No Frost (for example, Stinol NF 330) a worn seal can lead to freezing not only of the back wall, but also of the air ducts. This increases the load on the fan and shortens the service life of the compressor.

2. The drainage hole is clogged: why the water does not drain out

In refrigerators Stinol with a drip defrosting system, condensation 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 ice dams. This happens especially often in models with top freezer (Stinol 104, Stinol 110, where the drainage channel is thinner.

Signs of blockage:

• 🌊 Puddles under the vegetable drawers.
• ☃️ Ice is only in the lower part of the back wall.
• 🕳️ The drainage hole is not visible due to ice.

How to clean the drainage:

1. Turn off the refrigerator and defrost it (at least 12 hours).
2. Take a plastic one a straw (from a cocktail) or a knitting needle, wrapped in a soft cloth.
3. Carefully push the blockage, then rinse the hole with warm water and citric acid (1 teaspoon per glass).
4. Check whether the water is leaving: pour a little into the drainage hole - it should flow into the container above compressor.

Disconnect the refrigerator from the network

Defrost for at least 12 hours

Prepare a tube/knitting needle and warm water

Clean the hole and rinse with citric acid

Check the drain water-->

If the drainage gets clogged often, the reason may be mold inside the tube. In this case, treatment with hydrogen peroxide (3% solution) or special products for cleaning refrigerators will help.

3. Malfunction of the thermostat or temperature sensor

The thermostat (or electronic sensor in modern models) is responsible for turning the compressor on/off. If it is broken, the compressor may run non-stop, freezing the back wall. In refrigerators Stinol with a mechanical thermostat (Stinol 100, Stinol 102) this is a common problem after 5-7 years of operation.

Signs of thermostat failure:

• ❄️ The compressor works almost without pauses.
• 🌡️ The temperature in the chamber is lower than the set one (for example, instead of +5°C - 0°C or −2°C).
• 🔄 After defrosting, ice forms again in 1-2 days.

How to check the thermostat:

1. Turn off the refrigerator and remove the thermostat (usually it is located next to the lamp or on the top panel).
2. Find two wires going to the thermostat and short them together (use a screwdriver with an insulated handle!).
3. If after closing the compressor starts, the thermostat is faulty and requires replacement.

⚠️ Attention! In models Stinol with electronic control (Stinol NF 440, Stinol RTK 146) a temperature sensor is used instead of a thermostat. Checking it requires a multimeter - if the resistance of the sensor does not change with temperature changes, it must be replaced.

4. Freon leakage or clogged capillary tube

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) or a clog in the capillary system. In models Stinol over 10 years old, this is a typical problem due to corrosion of the tubes.

Signs of a freon leak:

• 🧊 Ice only in one place on the back wall.
• 🔥 The compressor runs for a long time, but the temperature does not drop.
• 💨 The condenser (grid at the back of the refrigerator) does not heat up.

What to do:

• 🛠️ Independently you can only check whether the compressor winding is damaged (blackened spots, burning smell).
• 🔧 Foreman you will need:
  • Find the leak point (often these are soldered connection or evaporator).
  • Replace the filter drier.
  • Refill with new freon (usually R-134a or R-600a).

How to determine the type of freon in your Stinol?

In Stinol refrigerators two types of refrigerant are used:

- R-134a —in models before 2010 (for example, Stinol 100, Stinol 102).

- R-600a (isobutane)—in models after 2010 (Stinol NF 330, Stinol RTK 146).

The type of freon is indicated on the nameplate (metal plate) on the back of the refrigerator or in the product passport.

Repair cost for a freon leak:

• Diagnostics: 500–1,000 ₽.
• Refilling freon: 2,500–4,000 ₽ (depending on type).
• Replacement of the capillary tube: 3,000–5,000 ₽.

5. Failure of the No Frost system (for corresponding models)

In refrigerators Stinol with No Frost (Stinol NF 330, Stinol NF 440) the back wall freezes for other reasons:

• 🌀 Fan malfunction: if it stops, cold air does not circulate, and the evaporator is covered with ice.
• 🔥 Failure of the defrost heating element: the heater must be turned on periodically to melt the frost. If it is broken, ice accumulates.
• 🕵️ Failure of the defrost timer: in mechanical systems No Frost the timer controls the defrost cycles. If it is jammed, defrosting does not occur.

How to diagnose:

1. Turn off the refrigerator and defrost it for 24 hours.
2. After turning it on, listen: after 10–15 minutes the fan should start working (light air noise).
3. If after 8-12 hours of operation the back wall is covered with ice again, there is a problem in the system No Frost.

Drip (crying evaporator)

No Frost (full or partial)

I don’t know which one system-->

System repair No Frost usually includes:

• Replacement of the fan (1,500–2,500 RUR).
• Replacement of the defrost heating element (2,000–3,000 ₽).
• Replacement of a timer or electronic unit (3,000–5,000 ₽).

6. Incorrect installation or external factors

Sometimes the problem lies not in the refrigerator, but in its location. For example:

• 🔥 Near heat sources: a radiator, stove or direct sunlight cause the compressor to work harder, which leads to freezing.
• 🌬️ Poor ventilation: if the refrigerator fits into a niche without gaps (you need at least 5 cm in the back and 2 cm on the sides), the condenser overheats.
• 📏 Uneven floor: a misalignment of more than 2° disrupts the circulation of the refrigerant.

How to check:

1. Measure the temperature in room: if above +30°C, the refrigerator will work at its limit.
2. Check the gaps: 2 fingers should fit freely between the wall and the back wall of the refrigerator.
3. Use a level to make sure that the refrigerator is level (adjustable with legs).

7. Factory defects or wear of parts

In rare cases, ice on the back wall is a consequence of factory defects:

• 🏭 Incorrect soldering of evaporator tubes (found in models Stinol 100 early releases).
• 🔧 Thermal insulation defect (if the walls of the refrigerator are cold outside).
• ⚙️ Uncalibrated thermostat (in new refrigerators).

What to do:

• If the refrigerator is under warranty, contact the service center Stinol.
• If the warranty has expired, but the model is relatively new (up to 3 years), you can try to write to support the brand - sometimes they will meet you halfway.
• In other cases, diagnostics by a specialist (cost 1,000–1,500 rubles).

⚠️ Attention! In refrigerators Stinol with a combined system (No Frost in the freezer + drip in the refrigerator) factory defects are often manifested by freezing only in the refrigerator compartment. This is due to incorrect setting of the refrigerant switching valve between chambers.

FAQ: Frequently asked questions about ice in the Stinol refrigerator

Is it possible to use the refrigerator if Is the back wall freezing?

Yes, but with reservations:

• If the ice is thin (up to 5 mm) and does not interfere with the closing of the door, the refrigerator can be used, but the cause should be eliminated as soon as possible.
• If the ice is thick (more than 1 cm) or the compressor runs without stopping, it’s better defrost the refrigerator and carry out diagnostics.
• In models with No Frost ignoring the problem can lead to breakdown of the fan or defrosting heating element.

How often do you need to defrost a Stinol refrigerator with a drip system?

The manufacturer recommends defrosting refrigerators Stinol with a drip system once every 6-12 months. However, with intensive use (frequently opening the door, high humidity in the room), defrosting should be done every 3-4 months. After defrosting, be sure to clean the drainage hole!

Does installing a fan inside the refrigerator help against ice?

No, this is dangerous and useless the solution! Fans not designed for operation in humid environments can cause:

• Short circuit.
• Increased condensation formation.
• Overload of the compressor due to uneven distribution cold.

Instead, it is better to install a standard ventilation system (in models with No Frost) or clean the drainage (in drip systems).

Why, after replacing the seal, the back wall still freezes?

Possible reasons:

• The seal is installed incorrectly (for example, with a skew in the corners).
• The new seal does not fit in size or model (even if it is “similar in appearance”).
• The problem is not in the seal, but in thermostat or defrosting system.
• The refrigerator door is skewed due to loose hinges.

Check the tightness of the seal with a sheet of paper (as described above) and when adjust the hinges if necessary.

Which Stinol models most often suffer from freezing of the rear wall?

According to statistics from service centers, owners of the following models most often face this problem:

• Stinol 100/101/102 —due to wear of thermostats and drainage systems.
• Stinol 103/104 —due to narrow drainage holes.
• Stinol NF 330 —due to breakdowns of the defrost heating element in the system No Frost.
• Stinol RTK 146 —due to factory defects in thermal insulation (in batches of 2018–2019).