The thermostat (or thermostat) is a key element of the refrigerator, responsible for maintaining the set temperature. In two-chamber models Veko its location depends on the year of manufacture, modification and type of cooling system (drip No Frost or combined). If the refrigerator stops freezing, does not turn off, or, on the contrary, works without stopping, in 70% of cases it is the thermostat that is to blame.
It is not difficult to find it yourself, but it is important to take into account the design features. For example, in models Veko RKN-2452 and Veko RKN-2702 the thermostat is hidden behind a plastic panel inside the refrigerator compartment, and in the line Veko Frost Free it can be located outside, next to the compressor. This article will help you accurately determine the location of the part, avoid mistakes during dismantling and understand when you should contact a technician.
⚠️ Attention: If your refrigerator Veko was produced before 2015, the location of the thermostat may differ. In older mechanically controlled models, the sensor was often attached directly to the evaporator, which required complete defrosting before replacement.
1. How does a thermostat work in refrigerators Veko
A thermostat is an electromechanical or electronic device that measures the temperature inside the chamber and controls the operation of the compressor. In two-chamber refrigerators Veko it can be:
- 🔘 Mechanical — with a capillary tube filled with freon. These were installed in models before 2018 (for example, Veko RKN-2201).
- 📱 Electronic - with a temperature sensor and control board. Found in modern lines (Veko Inverter, Veko Smart Cool).
- 🔄 Double - separate regulators for the refrigerator and freezer compartments (typical for models with No Frost).
In mechanical thermostats, the main element is bellows (corrugated tube), which reacts to temperature changes. When the air is heated, the pressure in the tube increases, the contacts close, and the compressor turns on. In electronic systems, the signal from the sensor is sent to a microcontroller, which analyzes data and controls cooling.
⚠️ Attention: In refrigerators Veko with a system No Frost the thermostat is often integrated into the control board. Replacing it requires soldering work and knowledge of circuit design - without experience it is better not to take risks.
2. Where to look for the thermostat: 3 main places
The location of the thermostat depends on the model and type of cooling system. Below are typical options for two-chamber refrigerators Veko:
| Refrigerator type | Models Veko | Where is the thermostat | Access features |
|---|---|---|---|
| Drip system (mechanics) | RKN-2201, RKN-2452, RKN-2702 | Inside the refrigerator compartment, behind the plastic panel or temperature control knob | You need to remove the protective cover and disconnect capillary tube |
| No Frost (electronics) | Veko Frost Free, Veko Inverter | Outside, next to the compressor or on the control board | Often soldered to the board - replacement is difficult |
| Combined system | Veko Dual Cool, Veko Smart | Two thermostat: one in the refrigerator compartment, the second in the freezer | The freezer regulator can be hidden under the back wall |
In most cases, the thermostat in mechanical models is attached to the evaporator (radiator) using a metal clamp. It is easily identified by a thin tube running from the regulator body to the rear wall. refrigerator.
3. Step-by-step instructions: how to find the thermostat in the refrigerator compartment
Let's consider the most common case - a mechanical thermostat in models Veko RKN-2452 and similar ones. You will need:
- ⚒️ Phillips screwdriver
- 🔧 Pliers (for clamps)
- 📸 Phone (to take a photo of the connection diagram)
Step. Step 2 on the cover you will see the thermostat housing - a plastic box with a capillary tube coming out of it. The tube leads to the evaporator (metal radiator on the back wall). Unplug the refrigerator and defrost it. This is necessary - moisture can cause a short circuit during dismantling.
Step 2. Remove the plastic trim from inside the refrigerator compartment. It is secured with latches or screws (usually 2-3 pieces under the temperature control knob). Carefully pry it off with a screwdriver so as not to break the clips.
Step 3. Behind the cover plate you will see the thermostat housing - a plastic box with a capillary tube coming out of it. The tube leads to the evaporator (a metal radiator on the back wall).
Take a photo of the wire connection diagram|Mark with a marker the position of the tube on the evaporator|Check for the presence of a spare one. clamp|Prepare a container for condensate (if defrosting is incomplete)-->
⚠️ Attention: In some models Veko (for example, RKN-2702) the thermostat may be hidden under the egg tray. You will have to remove the shelf and dismantle the tray to get to the fasteners.
4. Thermostat in the freezer: nuances
In two-chamber refrigerators Veko the freezer compartment is often equipped with a separate thermostat. Its location depends on the type of system:
- 🧊 In models with manual defrosting (for example, Veko RKN-2201), the regulator is located inside the freezer compartment, behind the rear panel. Access to it is difficult - you will have to remove the evaporator.
- ❄️ In systems No Frost the freezer thermostat is usually integrated into the control board, which is located in the technical compartment (bottom, behind the back cover).
To check the freezer thermostat without disassembling the refrigerator, use a multimeter:
- Unplug the refrigerator and remove the back panel of the freezer.
- Find two wires going to the thermostat (usually red and brown).
- Short them together. If the compressor starts, the thermostat is faulty.
5. Signs of a malfunction of the thermostat
Before looking for the thermostat, make sure that the problem is in it:
- ❄️ The refrigerator does not turn off and runs non-stop (the compressor is hot).
- 🔥 The temperature in the chamber is too high, despite the maximum cooling settings.
- 🔄 The compressor turns on for 5-10 seconds and immediately turns off (cyclically).
- 💡 The light inside is on, but there is no cooling.
- 🎛️ The temperature adjustment knob rotates without clicks (in mechanical models).
In refrigerators Veko with electronic control (for example, Veko Smart Cool) a faulty thermostat often displays an error E1 or E2 on the display. In this case, flashing the board or replacing the sensor is required.
For accurate diagnosis of a mechanical thermostat:
- Remove the regulator (as described above).
- Immerse the capillary tube in ice for 1-2 minutes.
- Test the contacts with a multimeter in circuit test mode. If the circuit does not close, the thermostat is faulty.
6. How to replace the thermostat yourself
If the diagnostics have confirmed a breakdown, you can try to replace the part yourself. To do this:
Step 1. Buy a similar thermostat. For refrigerators Veko suitable models:
K59-L1938(for RKN-2452, RKN-2702),Danfoss 077B6(universal for mechanical systems),WDF19(for models with No Frost).
Step 2. Disconnect the capillary tube from the evaporator. Carefully remove clamp with pliers, without bending the tube.
Step 3. Disconnect the wires from the thermostat terminals. Be sure to take a photo of the connection diagram — mixed up wires can damage the compressor.
Step 4. Install the new thermostat in the reverse order. Attach the tube to the same place on the evaporator where the old one was.
7. When is it better to call a specialist
Not all thermostat failures can be repaired yourself. Contact a specialist if:
- 🔧 Thermostat. soldered into the control board (No Frost).
- 🔌 After replacement, the refrigerator gives an error
E3orE4. - ⚡ When checking with a multimeter, a short circuit in the circuit was detected.
- 🛠️ Freon refilling is required (if during dismantling damaged the tube).
The average cost of replacing a thermostat at a service center is from 2,500 to 5,000 rubles (depending on the model and type of part). In some cases, it is cheaper to buy a new refrigerator, especially if we are talking about older models Veko (before 2010), where the cost of repairs can exceed 50% of the price. devices.
How long does a thermostat last?
The average service life of a mechanical thermostat is 7-10 years. Electronic sensors are more durable (10-15 years), but are sensitive to voltage surges. If your network has frequent surges, install a stabilizer - this will extend the life of not only the thermostat, but also. compressor.
FAQ: Frequently asked questions about thermostats in refrigerators Veko
Is it possible to repair the thermostat, or just replace it?
Mechanical thermostats cannot be repaired - they are only replaced. Electronic sensors are sometimes subject to soldering (if the problem is in the contacts), but this is a temporary solution. In 90% of cases, a new part is required.
How to check a thermostat without a multimeter?
In mechanical models, you can short-circuit the wires going to the thermostat. If the compressor starts and runs without stopping, the regulator is faulty. Do not keep the wires closed for more than 5 minutes - this can damage the compressor.
Why does the new thermostat not work?
The reasons may be the following:
- Incorrect connection of the wires (the terminals are mixed up).
- The capillary tube is not tight is adjacent to the evaporator.
- The compressor or start relay is faulty.
- There is a freon leak in the system (refilling is required).
Where to buy a thermostat for Veko?
Original spare parts look for:
- On the website Veko (section "Spare parts").
- In stores like 220 Volt, M-Video (spare parts departments).
- On AliExpress or eBay (indicate the exact model of the refrigerator).
The cost varies from 800 to 3000 rubles depending on the type.
Can the thermostat fail due to power surges?
Yes, this is especially true for electronic models. Mechanical thermostats are more stable, but strong changes (for example, during a thunderstorm) can damage the contacts. It is recommended to use a surge protector or voltage stabilizer.