Thermostat in the Veko refrigerator: where to look, how to check and replace

Turkish brand refrigerators Veko are popular due to the combination of affordable prices and reliable assembly. But even in proven models, over time the thermostat, the key element responsible for maintaining the set temperature, fails. If your Veko stops freezing, constantly works without stopping, or, conversely, turns off too often, the problem with a 90% probability lies in the thermostat.

In this article you will find exact thermostat location diagrams for different lines of refrigerators Veko (from RCN-3200 to RCN-5500X), you will learn how to diagnosis with a multimeter and replace it without calling a technician. We will also analyze typical repair mistakes that lead to repeated breakdowns, and provide a checklist for purchasing a new thermostat.

Important: the design of refrigerators Veko differs from European brands (Indesit, Atlant). Here, the thermostat is often hidden under decorative panels, and in models with No Frost its search requires disassembling the internal unit. If this is your first time doing repairs, prepare a camera to record every step of disassembly.

How the thermostat works in refrigerators Veko

The thermostat (or thermostat) in refrigerators Veko performs two functions:

• 🔹 Temperature control: sensor inside the capillary tube reacts to changes in temperature in the chamber and opens/closes contacts.
• 🔹 Compressor control: when a specified threshold is reached (for example, +5°C), the thermostat turns off the motor, saving energy.

In most models Veko use mechanical thermostats of the brand K59 (for single-chamber) and K50 (for double-chamber), less often - electronic sensors in premium series. Mechanical versions consist of:

• 📍 Housing with contacts (mounted on the back panel or inside the chamber).
• 📍 Capillary tube (thin copper tube going to the evaporator).
• 📍 Adjustment knobs (in older models it is displayed on the front panel, in new ones it is hidden inside).

Electronic thermostats (found in Veko RCN-5500X and newer) are a board with a thermistor. Their diagnosis requires special equipment, and replacement is more expensive. If your refrigerator was manufactured after 2018, check the documentation - perhaps instead of a classic thermostat, it is installed temperature sensorintegrated into the control board.

Where the thermostat is located: search by model Veko

The location of the thermostat depends on refrigerator type (single-chamber/double-chamber), defrosting systems (drip/No Frost) and year of manufacture. Below are the exact diagrams for popular lines.

1. Single-chamber refrigerators (Veko RCN-3200, RCN-3500)

In compact models, the thermostat is located inside the refrigerator compartment, under a plastic casing next to the light lamp. To get to it:

1. Unplug the refrigerator.
2. Remove the shelves and drawers.
3. Unscrew the two screws holding the top cover (under the lamp).
4. Behind the cover you will see a plastic box with an adjustment knob - this is the thermostat.

Peculiarity: in models before 2016, the adjustment knob located on the front panel (on the right under the freezer). In this case, the thermostat is mounted on the refrigerator, and to replace it you will have to remove the back cover. Feature rear wall refrigerator, and to replace it you will have to remove the back cover.

2. defrosting (Veko RCN-4200, RCN-4800)

Here the thermostat is responsible only for refrigerator compartment (the freezer is controlled by a separate sensor). You need to look for it:

• 🔧 On the right inside the chamber: under the plastic cover covering the evaporator.
• 🔧 On the back wall: in a niche next to the compressor (you need to remove the metal cover).

In models with separate regulators (for example, Veko RCN-5000) the thermostat of the refrigerator compartment is located inside the plastic box above the top shelf, and the freezer is located on the rear panel under the insulation.

3. (Veko RCN-5500X, RCN-6000)

The No Frost system complicates access to the thermostat. In these models it is hidden:

• 🕵️ Behind the rear panel refrigerator compartment (you need to remove the inner lining).
• 🕵️ In the control unit (if the thermostat is electronic, it is soldered into the board).

To disassemble No Frost you will need Torx T20 screwdriver a flat screwdriver to remove the clips. Be careful: in these models, the capillary tube of the thermostat often passes through the foam insulation - it can be easily damaged during careless dismantling.

How to distinguish a mechanical thermostat from an electronic one?

In mechanical models, the temperature adjustment knob is physically connected to the thermostat (a click is heard when turned). In electronic models, the adjustment is carried out using buttons on the display, and the thermostat itself is a small sensor on the board, often marked as “NTC”. sensor".

⚠️ Attention: In refrigerators Veko c display on the door (series Premium) the thermostat is often integrated into the control module. Replacing it requires soldering or completely replacing the board - without skills in working with electronics, it is better to contact the service.

Signs of a malfunction thermostat

Before disassembling the refrigerator, make sure that the problem is in the thermostat: Typical symptoms:

• ❄️ Continuous operation of the compressor: the motor does not turn off, a “snow coat” forms in the chamber.
• 🔥 No cold: the compressor does not turn on, the light inside is on.
• 🔄 Cyclic clicks: the thermostat constantly closes/opens the contacts (audible from inside).
• 🌡️ Temperature discrepancy: the handle is set to +5°C, and in chamber +15°C or −10°C.

The same symptoms may indicate leakage. freona compressor breakdown or a clogged capillary tube. To exclude other faults:

1. Check whether the light is on inside the refrigerator. If not, the problem is in the electrical system (wiring, plug, socket).
2. Touch compressor (back wall at the bottom). If it is cold, but does not turn on, the thermostat is at fault. If it is hot and does not turn off, there may be a refrigerant leak.
3. Listen does the relay click? when turning the thermostat knob. The absence of clicks is a sign of a breakdown.

If the refrigerator Veko is equipped with display with errorscheck the fault codes:

• E1 - problem with the refrigerator compartment sensor.
• E2 - malfunction of the freezer sensor.
• E4 - malfunction of the thermostat or control board.

⚠️ Attention: In models with No Frost faulty The thermostat can lead to fan icing. If you hear a humming sound, but the cold does not come in, immediately turn off the refrigerator and defrost it for 12 hours before diagnosing.

How to check the thermostat with a multimeter

To diagnose a mechanical thermostat you will need multimeter ("dialing" mode) and a screwdriver. Procedure:

Disconnect the refrigerator from the mains

Remove the thermostat protective casing

Disconnect the wires from the contacts (take a photo of the connection diagram!)

Translate multimeter in dial mode (200 Ohm)

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Step 1. Removing the thermostat

Carefully remove the plastic thermostat box (usually secured with 2-4 self-tapping screws). Disconnect the wires after photographing their location. Pay attention to color marking:

• 🔴 Red/brown —phase (power).
• 🔵 Blue/black —zero.
• 🟢 Green/yellow —grounding (if any).
• 🟡 Yellow/white —signal wire to the compressor.

Step 2. Continuing contacts

Attach the multimeter probes to contacts 3 and 4 (usually they are labeled or marked with arrows). In working condition:

• 🔹 At room temperature (20–25°C) the contacts should be closed (resistance ~0 Ohm).
• 🔹 When cooling (place the thermostat in the freezer for 10 minutes) the contacts should open (resistance → ∞).

If the contacts do not open when cooling or do not close when heating, the thermostat is faulty. In electronic models, the resistance of the sensor is checked (usually 5–10 kOhm at 25°C).

Replacing the thermostat: step-by-step instructions

If the diagnostics confirmed a breakdown, prepare:

• 🛠️ New thermostat (suitable model, see table below).
• 🛠️ Screwdrivers (phillips, flat, Torx T20 for No Frost).
• 🛠️ Pliers, wire cutters, electrical tape.
• 🛠️ Silicone grease (for a capillary tube).

Step 1. Selection of replacement

Thermostats for Veko are interchangeable within the same series. Below is compatibility:

Step 2. Removing the old thermostat

1. Disconnect the refrigerator from the mains.
2. Remove the protective casing (see section “Where is it located?” thermostat").
3. Disconnect capillary tube from the evaporator (carefully so as not to bend it!).
4. Unscrew the fastening screws and remove the thermostat.

Step 3. Installing a new thermostat

1. Place the new thermostat in place of the old one, secure with screws.
2. Connect the capillary tube to the evaporator, securing it plastic ties.
3. Connect the wires according to the photo (color coding!).
4. Install the protective casing.

Step 4. Checking operation

Turn on the refrigerator and observe:

• 🔹 The compressor should start in 5–10 minutes.
• 🔹 After 1–2 hours, the temperature in the chamber should drop to +4...+6°C.
• 🔹 The thermostat should turn off the motor when the set temperature is reached.

⚠️ Attention: In refrigerators Veko s electronic control after replacing the thermostat, it may be necessary reset errors. To do this, turn off the refrigerator for 10 minutes, then hold the button Super Cool 5 seconds.

Typical errors when replacing a thermostat

Even experienced Craftsmen make mistakes that lead to repeated breakdowns. Avoid these points:

• 🚫 Mixed wires: incorrect phase/zero connection can burn the control board. Always take a photo of the original circuit!
• 🚫 Damaged capillary tube: if it is bent or broken, the thermostat will show the wrong temperature.
• 🚫 Leaking fastening: if the thermostat housing is poorly secured, moisture will get on the contacts, which will lead to corrosion.
• 🚫 Ignoring testing: without checking the new thermostat with a multimeter before installation, you risk encountering a defect.

A common problem with repair Veko — incompatibility of analogues. For example, a thermostat from Atlant may physically fit, but have a different temperature range. Always check the compatibility table or consult with the seller of spare parts.

Another nuance: in models with No Frost when replacing the thermostat, the settings sometimes get lost defrost. If after the repair the fan begins to hum or ice appears on the back wall, it is required calibration of the control board (done through the service menu).

Where to buy a thermostat for Veko and how much it costs

A new thermostat can be ordered:

• 🛒 Official dealers Veko: original spare parts, but the price is 20-30% higher than analogues.
• 🛒 Online stores (for example, Spare parts for refrigerators, 220-Volt): wide choice, but check the reviews.
• 🛒 Markets for radio components: cheaper, but the risk of running into a fake.
• 🛒 Service centers: they often sell used thermostats after repair (saving up to 50%).

Thermostat cost for Veko:

• 💰 Mechanical (K59, K50): 800–1 500 ₽.
• 💰 Electronic sensor: 1,200–2,500 ₽.
• 💰 Control board with thermostat: 3,000–5,000 ₽.

When purchasing, please specify:

• 🔹 Length of the capillary tube (must match the old one).
• 🔹 Temperature range (for example, K59-L1455 works from −25°C to +10°C).
• 🔹 Mounting type (screws, latches).

⚠️ Attention: In 2023 Veko changed the supplier of thermostats for models RCN-6000 and newer. Now instead of Danfoss thermostats are installed. data-i="310">. They are interchangeable, but have different contact markings (see the instructions for the refrigerator). Sensata. They are interchangeable, but have different contact markings (see the instructions for the refrigerator).

FAQ: Frequently asked questions about the thermostat in refrigerators Veko

Is it possible to repair the thermostat or just replace it?

Mechanical thermostats cannot be repaired - they only replace. In electronic sensors, soldering the contacts sometimes helps, but this is a temporary solution. If the thermostat is “buggy” (unstable) it is better to replace it.

Which thermostat is suitable for Veko RCN-4500?

The original one is suitable for this model K50-L1430 or analogues: Danfoss 077B6, Ranco K50. The main thing is that the length of the capillary tube is at least 1.5 m.

After replacing the thermostat, the refrigerator does not turn on. What should I do?

Check:

1. The wires are connected correctly (the phase should go to pin 3 or 4).
2. Reliability of fastening the capillary tube to the evaporator.
3. Operability of the new thermostat (check with a multimeter).

If everything is correct, the control board may be blocked. Try turning off the refrigerator for 10 minutes.

Is it necessary to defrost the refrigerator before replacing the thermostat?

Definitely! Ice on the evaporator may prevent removal of the capillary tube. Defrost the refrigerator for 12-24 hours, then wipe all surfaces dry.

Can I use a thermostat from another brand?

Yes, but only if they match:

• Thermostat type (K59, K50 etc. d.).
• Length of the capillary tube.
• Temperature range.

For example, a thermostat from Atlant or Indesit with marking K59 suitable for Veko RCN-3200.