Ice on the back wall of the refrigerator Stinol: 7 reasons and what to do

Have you found frost or a thick layer of ice on the back wall of the refrigerator Stinol? This is not just an aesthetic problem - it signals a malfunction of the system or improper operation. Unlike modern models with No Frostwhere ice rarely forms, refrigerators Stinol (especially older series STN 165, STN 175 or STN 190) more often encounter this problem due to design features. In 80% of cases, ice is associated with a violation of the defrosting cycle or high humidity, but sometimes breakdowns that require repair are to blame.

In this article we will analyze all possible reasons - from a banal door seal that is not tightly closed to a failure of 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 - why in Stinol refrigerators with a drip system ice on the back wall can be normal if its thickness does not exceed 3-5 mm.

1. Drip defrosting system: why ice on the back wall may be the norm

Refrigerators Stinol s drip system (aka “crying”) operate on the principle of cyclic defrosting. During cooling, a thin layer of frost forms on the back wall, which then melts and flows into the drainage hole. If you see a uniform layer of ice up to 5 mm thick this is not always a breakdown, but a design feature.

However, there are signs that the system has failed:

1. Ice grows thick layer (more than 1 cm) and does not thaw for weeks.
2. Ice forms unevenly only in one corner or from below.
3. Water accumulates under the vegetable boxes (which means the drainage is clogged).

Normally, the defrosting cycle should take place every 6–12 hours. If the intervals are violated, check:

• 🔌 Temperature conditions: if the temperature is too low (below +4°C), the compressor runs non-stop and the ice does not have time to melt.
• 🚪 Door closure tightness: even a small gap leads to entry of warm air and increased formation of condensation.
• ❄️ Defrosting frequency: if the refrigerator has not been defrosted for more than 6 months, the drainage hole could become clogged.

⚠️ Attention: In models Stinol STN 163 i STN 185 with mechanical control, the defrosting cycle depends on serviceability defrost timer. If it breaks, the ice will build up continuously.

2. Violation of tightness: checking the seal and door hinges

The most common cause of ice is chamber depressurization. Warm air penetrates inside, moisture condenses on the cold rear wall and freezes. In 60% of cases, a worn seal or a skewed door is to blame.

How to diagnose the problem:

1. Close the door and try to push it between the seal and the body sheet of paper. If it falls out or moves easily, the seal is broken.
2. Shine a flashlight inside the closed refrigerator. If light is visible from the outside, the seal does not fit.
3. Check whether the door is sagging. To do this, open it 45° - it should remain in this position, and not close or open further.

What to do:

• 🧼 Clean the seal from dirt and grease with a soap solution. Sometimes this is enough for it to fit tightly again.
• 🔧 Adjust the hinges: loosen the fastenings and level the door.
• 🛒 Replace the sealif it is cracked or has lost elasticity. For Stinol original rubber bands are suitable 6001-00000160 (for models with a height of 160–180 cm) or 6001-00000180 (for tall refrigerators).

⚠️ Attention: If the door sags due to a deformed body (for example, after transportation), adjusting the hinges will not help - repair or replacement of the door will be required.

Inspect the seal for cracks and dirt|

Check the fit with a sheet of paper|

Adjust door hinges|

Test the closure for sagging-->

3. Wrong temperature: why “maximum cold” harms the refrigerator

Many users mistakenly believe that the colder it is in the chamber, the better the food is stored. However, setting the regulator to maximum cooling (for example, to "5" or "7" in models Stinol STN 170) leads to:

• Continuous operation of the compressor without pauses for defrosting.
• Formation of a thick layer of ice on the back wall (up to 2–3 cm).
• Increased energy consumption and equipment wear.

Optimal temperature settings for Stinol:

How to set the temperature correctly:

1. Set the regulator to the middle of the scale (usually "3").
2. Put the thermometer in a glass of water and place it on the middle shelf.
3. Check the readings after 6–8 hours. If the temperature is above +5°C, increase the value by 1 division; if below +2°C, decrease it.

⚠️ Attention: In refrigerators Stinol with electronic control (for example, STN RF 385), the temperature is adjusted more accurately, but a failure in the sensor can lead to incorrect readings. If, after adjusting the settings, the ice continues to build up, check the functionality of the thermostat.

4. Clogged drainage hole: how to clean the drainage system

In refrigerators with a drip system, melt water flows down the back wall into the drainage hole and then evaporates. If the hole is clogged, the water stagnates, freezes, and ice builds up from the bottom. Signs of a blockage:

• 💧 Puddles under the vegetable drawers.
• 🧊 Ice forms mainly in the lower part of the back wall.
• 🚫 Water does not drain during defrosting.

How to clean drainage:

1. Unplug the refrigerator and defrost it (at least 12 hours).
2. Locate the drainage hole at the bottom of the back wall (in models Stinol it is usually located centrally above the compressor).
3. Take a plastic tube (for example, from a dropper) and carefully push it into the hole, rotating clockwise.
4. Rinse the drainage with warm water using a syringe.

To prevent blockages:

• 🧹 Once every 3 months, clean the hole with a cotton swab.
• 🍎 Do not place products close to the back wall (especially sticky or crumbling ones).
• 🚿 Once every six months, rinse the drainage with a soda solution (1 tablespoon per 1 liter water).

⚠️ Attention: If after cleaning the water still does not go away, the clog may be deeper - in the drain pipe behind the rear panel. In this case, you will need to disassemble the refrigerator.

What will happen if you do not clean the drainage?

Stagnant water in the drainage becomes a source of unpleasant odor and bacterial growth. In addition, ice can damage the plastic parts of the rear panel, and if it is heavily clogged, it can lead to corrosion of metal elements.

5. Malfunctions requiring repair: when to call a specialist

If you have checked the tightness, adjusted the temperature and cleaned the drainage, but the ice continues to grow, the problem lies in breakage of parts. Let's look at typical refrigerator malfunctions Stinol:

How to understand that you need professional help:

• 🔧 You have followed all the recommendations from the previous sections, but the problem remains.
• 💥 The refrigerator makes atypical sounds (knocking, humming, clicking).
• ⚡ Errors are displayed on the display (if any), for example E1 or F2.

⚠️ Attention: Self-repair of cooling systems (filling freon, soldering tubes) is dangerous! flammable and explosive if handled incorrectly. R-600a, used in Stinol, is flammable and explosive if mishandled.

6. Operating errors: what are you doing wrong

Even a working refrigerator will freeze if you violate the rules of use. Here are the most common mistakes:

🥬 Storing hot or warm foods

Steam from hot food increases humidity in the chamber. Moisture settles on the back wall and freezes. Always cool food to room temperature before placing it in the refrigerator.

🚰 Frequent opening of the door

Each time you open the chamber, warm air enters. If this happens frequently (for example, during preparations for the winter), the compressor does not have time to restore the temperature, and moisture condenses on the walls.

🧊 Incorrect loading of products

If the products are standing still. close to the back wall, they block air circulation and interfere with thawing. Leave a gap of at least 2-3 cm.

📦 Storing liquids in open containers

Evaporation from soups, compotes or milk increases humidity.

⚠️ Attention: In models Stinol with a freshness zone (STN 195, STN 200), it is not recommended to store fruits and vegetables in plastic bags - this disrupts air exchange and leads to the formation of condensation.

7. How to properly defrost a Stinol refrigerator: step-by-step instructions

If the ice layer exceeds 5-7 mm, the refrigerator needs to be defrosted. In models Stinol with a drip system, this is necessary. required to be done every 6-12 months (depending on the intensity of use). Here's how to do it safely:

🔌 Preparation

• Unplug the refrigerator.
• Take out all the food and put them away. into a cooler bag or a bowl of ice.
• Remove the shelves and drawers - they need to be washed separately.

⏳ Defrosting

• Leave the door open and wait 8-12 hours. Do not try to speed up the process with a hairdryer or hot water - this can damage the plastic!
• Place a bowl of hot water on the bottom shelf. (not boiling water!) - this will speed up the melting of the ice.
• Every 2 hours, remove the melted water with a rag.

🧼 Cleaning and drying

• Rinse all surfaces with a soda solution (2 tablespoons per 1 liter of water).
• Clean the drainage hole (see section 4).
• Wipe the refrigerator dry and leave it open for another 1-2 hours to allow the moisture to evaporate.

⚠️ Attention: After defrosting, do not turn on the refrigerator immediately! Let it stand off for 30-60 minutes to allow pressure in the system! has stabilized.

Wipe the seal dry|

Check the operation of the light bulb|

Set the temperature to +4°C|

Load products no earlier than 1 hour-->

FAQ: Frequently asked questions about ice in the refrigerator Stinol

🔹 Why does ice form only in one corner of the back wall?

This is a sign local blockage of the drainage or freon leaks in a specific place. If after defrosting and cleaning the drainage the problem remains, call a technician to check the tightness of the system.

🔹 Is it possible to put a fan in the refrigerator to remove ice?

No! The fan will disrupt the natural circulation of air and can lead to even greater freezing. In models Stinol with a drip system, forced ventilation is not provided.

🔹 How much does it cost to repair a thermostat in a Stinol refrigerator?

The cost depends. depending on the model and region. On average, replacing a thermostat costs 1,500–3,000 rubles. Check current rates with official service partners 1,500–3,000 rubles (including work and details). For an accurate price, check the model of your refrigerator at the service center.

⚠️ Prices for spare parts and labor may vary. Check current rates with official service partners Stinol.

🔹 Why does ice appear again after a week after defrosting?

This indicates: either the thermostat/defrosting timer is faulty, or the chamber seal is broken. Repeat the diagnostics in sections 2 and 2. 5. unresolved reason: Either the thermostat/defrost timer is faulty, or the seal of the chamber is broken. Repeat the diagnostics in sections 2 and 5.

🔹 Is it possible to use a Stinol refrigerator with ice if it is still freezing?

Technically yes, but this will lead to:

• Increased energy consumption (up to 30%).
• Accelerated wear of the compressor.
• Risk of breakage of plastic parts due to deformation by ice.

We recommend fixing the problem as soon as possible.