Heating system VAZ-2114: description, features and malfunctions

The car uses many systems andmechanisms. One of them is the cabin heating system. VAZ-2114 is also equipped with it. Unlike the conditioner, the stove manned cars on a mandatory basis. After all, in the heat you can open the window. But in the winter to cope with the cold in the cabin without a stove will not work. What is this item? How is the heating system VAZ-2114? The scheme, the principle of operation and faults - further in our article.

Characteristic and device

The main purpose of this system ismaintaining the optimum temperature in the cabin in the winter season. In addition to comfort, the stove is needed so as not to sweat the glass, especially the windshield. To avoid condensation on it, special nozzles are provided at the top of the panel. However, first things first. Below is a diagram of the interior heating system:

It is the same for all models of the Lada Samara family, including the VAZ-2114. So, the following elements are included in the system structure (decoding of the scheme):

1. Water deflector.
2. A nozzle of heating of a windshield assembled with air ducts.
3. Side nozzle designed for heating and ventilation of the cabin.
4. Central deflector.
5. Heater assembly with electric motor.
6. Interior ventilation nozzle.
7. Sealant tap stove.
8. Rear pipe heater VAZ-2114.
9. Inlet tube stove.

Where is the heating system located?VAZ-2114 (including the injector) is equipped with it in the cabin. The stove is located in the front panel, which is also called the "torpedo". Depending on the modification, the heating and ventilation system of the VAZ-2114 is interconnected with the air conditioner and the evaporator, or goes without it.

Also the faucet and the heat exchanger are included in the design. The latter works together with the gearmotor.

How does it work

The principle of the system is quite simple.It is based on the transfer of heat from the liquid. Thus, the radiator stove is connected to the main conclusions of the engine cooling system. Inside the heat exchanger is antifreeze or antifreeze. So, when the engine is heated, the hot liquid flows in a “big” circle to the radiator of the stove. When the SAUO (control unit) is turned on, the stove motor is activated. Warm air begins to move through the nozzles. The direction may be different - on the windshield, side, in the center of the cabin. One or several deflectors are activated, depending on the position of the stove lever.

That is, heat transfer occurs - the hot antifreeze is cooled not only in the main radiator (which stands in front of the engine and is shown in the photo below), but also in the heat exchanger of the heating system.

Of course, the engine temperature at the same timedrops significantly. Therefore, in extreme cold, motorists close the cavity of the cells of the main radiator so that the motor is not very cold. The most optimal mode of its operation is 80-90 degrees Celsius. When you turn on the stove, this figure drops immediately by 10-15 percent. However, we will not dwell on the principle of operation and consider the main faults in the VAZ-2114 heating system.

Unable to adjust temperature

Often owners of domestic cars (includingVAZ-2114) are faced with the impossibility of setting the air temperature on the control unit. The stove blows equally hot or cold, regardless of the position of the main lever SAUO (in the photo below - located in the center).

In this case, experts statemalfunction of the valves or malfunctions of the control unit itself. Also diagnosed with a temperature sensor. It is located next to the ceiling light control on the ceiling. Twist the lever position several times. Air heating should change tactile. If the temperature changes only at the extreme position of the sensor, the element must be replaced.

The stove blows cold

Dampers and temperature regulators fail extremely rarely. Therefore, if the stove blows cold all the time, the gearmotor most likely failed. This element is presented in the photo below.

How in this case the system is being repairedheating VAZ-2114? Injector or carburetor it does not matter. Due to the complex design, the gearmotor changes completely. To do this, you need to completely disassemble the "jabot" of the front panel. Then, using a cross-head screwdriver, unscrew three screws on the fuser unit, pull out the wires and remove the old gearmotor. New connects in a similar way. Check out how the VAZ-2114 cabin heating system works. The air must change its temperature when switching the lever on the unit from cold to hot mode and vice versa.

The stove blows badly in the legs and side windows

The heating system of the VAZ-2114 is no differentreliability. Over time, the stove ceases to properly heat the legs and side windows. And the trouble is not in the air temperature (on the contrary, it can be hot), but in the power of the flow with which it comes from the nozzles. In this case, you will have to refine the air flow channels. To do this, remove the front panel so that there was access to the nozzles.

Next, install a new corrugated hose.(from the factory here are just plastic tubes). Additionally, we process the joints with the heat insulation material “Splen”. All the gaps between the top and bottom of the panel are also pasted over with it. Next, the stove damper should be modified, which directs the flow to the desired zone. Often it is not pressed against the body. Because of this, a large percentage of hot air is simply lost in the panel and “walks” in the crevices. So, remove the valve and remove the old factory seal yellow. We fill up all the slots with a model. Instead of sponge sticking "Bitoplast". It is advisable to put it in several layers.

Bottom nozzles

Далее мы модернизируем воздуховоды для ног.When parsing the panel, you will see that there is a large gap between the nozzles. We close it up with a corrugated tube. We take out the regular air distributor outside, and in its place we also install a corrugation.

The diameter should be 4 centimeters.Thus, the air will be clearly directed to the feet, without leaks. As for blowing the windshield, it is being finalized similarly. Additionally, the owners fill the extra cavities with mounting foam in order to eliminate the creaking of the panel during movement (this problem has been haunting Samara since the first generation). Judging by the reviews, this method works.

Conclusion

So, we found out how the heating system worksVAZ-2114. As you can see, all faults with it can be fixed by yourself. You do not need to spend big money on it. After minor modifications, the heating system of the VAZ-2114 will be pleased with reliable and uninterrupted operation.