How the stove works on the Lada Grant

How to improve the operation of the stove on the Lada Granta

If a car is, in fact, a second home for you, but only on “wheels,” then, of course, you will not give up on the problem of poor interior heating. Nobody wants to be in a “metal freezing trap” in winter. But this is exactly how you can view a car in which the stove refuses to function.

The masters know exactly what to do in this case, but for such knowledge, and even more so for their actions, you will have to pay by taking several large bills out of your wallet with great sadness. We suggest that you do not follow traditional methods of solving the problem, but roll up your sleeves to independently find and eliminate the reasons why the stove in your Lada Granta does not work.

How the heating system works on the Lada Granta. stove heater diagram

The main purpose of a stove heater is to maintain a given temperature in the car interior, as well as to ensure an uninterrupted supply of oxygen inside.

Type of ventilation: supply and exhaust.

Heating circuit of Lada Granta: control is carried out by mechanical regulators that change the air flow speed and the direction of the damper.

In order to prevent unpleasant odors from entering the cabin, a cable-type air flow intake switch is pre-installed.

Heater for Lada Granta - troubleshooting methods and instructions for replacing the device

The stove belongs to the heating, air conditioning and ventilation system of a car. The purpose of its work is to maintain a given temperature and humidity conditions, ensuring comfortable conditions for being in the car and an influx of fresh air. The type of ventilation system in Grant is supply and exhaust. The stove is controlled by simple controls that allow you to change the speed of air flow, its temperature and the direction of blowing: onto the windshield, into the legs, etc. To isolate the interior from unpleasant odors and faster warm-up in winter, an air intake switch for the stove is provided from outside or from the inside.

Characteristics of the Grant stove

The standard heating, air conditioning and ventilation system ensures the creation and maintenance of a comfortable microclimate in the car. Its main functions are:

• interior ventilation;
• preventing moisture condensation on glass;
• preventing glass from icing;
• heating the interior to a comfortable temperature;
• air conditioning in the cabin.

The Lada Granta heating system is a single complex consisting of a large number of components and assemblies. The operation diagram of this system and its structure are shown in the figure.

Heating and ventilation system Lada Granta.

1. Windshield blower pipes.
2. Dampers for distributing air flows between the windshield and the passenger compartment.
3. Deflectors on the dashboard.
4. Leg warmer pipes.
5. A damper for distributing air flows between the areas of the windshield and passenger compartment, as well as the driver’s and passenger’s feet.
6. Stove radiator.
7. Air filter.
8. Recirculation gate.
9. Fresh air intake pipe.
10. Air intake pipe from the passenger compartment.
11. Electric fan.
12. Air conditioner evaporator.
13. Drainage.
14. Temperature regulator slider.

According to the Lada Granta heater diagram, the air entering through intakes 9 and 10 is supplied through the air conditioner evaporator to the mixing zone by fan 11, having previously been cleaned by filter 7. When the air conditioner is turned on, the heater is turned off and cold air enters the zone selected by the driver through dampers 14, 5 and 2. If it is necessary to warm up the interior, the air conditioner is turned off and air is supplied inside through the heater radiator 6. The heating time can be adjusted by changing the rotation speed of fan 11.

The rotation speed of the electric fan is adjusted by connecting additional resistors to the circuit of its electric motor. The connection is made through the air speed regulator located on the center console. It has five positions: four speeds and a zero “off” position.

Unlike previous AvtoVAZ models, the Lada Grant does not have a valve that regulates the amount of heat passing through the radiator. The air temperature is regulated by a damper gear motor.

Troubleshooting methods

Heating the car interior directly depends on the proper functioning of the engine cooling system, since the air entering inside is heated when passing through the radiator of the Lada Granta stove. It is necessary to check the coolant level in the expansion tank: a decrease in the amount of antifreeze leads to impaired circulation and insufficient heat exchange. This result may also be due to a leak in the valve on the expansion tank plug.

Insufficient heating occurs due to a malfunction of the thermostat or pump in the engine cooling system. The cause of unsatisfactory performance is sometimes an air lock in the heating system. To eliminate it, with the engine warm, remove the heating hose from the throttle valve assembly.

Then you need to create excess pressure in the expansion tank - unscrew the cap and blow into it. In this case, coolant containing air bubbles will flow from the removed hose. Similar actions must be performed with the second hose.

This operation should be carried out with great care: antifreeze on a warm engine has a temperature of about 90°C, and when removing the hoses you can burn your hands.

The stove stops heating due to a malfunction of the gear motor that controls the damper that regulates the air temperature. Replacing the VAZ 2190 heater gearmotor can be done with your own hands, however, this is a rather labor-intensive procedure that requires professional experience. The part is located under the hood of the car, and to remove it you will need to dismantle the seals, frill, wiper arms and trapezoid. When replacing a nano gearmotor, it is recommended to check its performance by applying voltage to the corresponding terminals from the battery.

Important elements of the stove design are the heater radiator and the fan that supplies air to it. The heat exchanger must not be dirty, otherwise it must be replaced or repaired.

How to change a heater

Replacement of the Lada Granta stove is carried out in accordance with the technological regulations of the manufacturer. But experienced car enthusiasts offer their own schemes for replacing this device, which are successfully used during repair work. First, you need to clear the space under the hood of the car: unscrew the battery terminals and bolts and remove it, remove the throttle body pipes, air ducts, and remove the air filter. After this, you can drain the antifreeze from the engine cooling system.

Work in the interior begins with dismantling the decorative cover of the handbrake: you need to unscrew two screws and release the tunnel fastening on the driver and passenger sides. Now you need to remove the gas pedal by unscrewing three bolts and disconnecting the contact group. Then you should remove the brake pedal mounting pin and press on it, freeing up space for further work. To access the heater radiator, remove the plastic side cover of the dashboard. To dismantle the heat exchanger, cut the pipes in two places.

The cut-off part of the pipes should be pulled out into the engine compartment, then bend the brake pedal and pull the old radiator into the cabin. After installing the new heat exchanger, its pipes are pushed into the cabin from the engine compartment, put on the radiator pipes and securely tightened with new clamps. Further installation of the removed parts occurs in the reverse order. Then the battery is installed and coolant is added.

Rules for using a standard heating system

The car's operating manual outlines the basic principles of operation of the ventilation, air conditioning and interior heating systems. To quickly warm up, you need to switch the damper to the air recirculation position and the fan speed to the “maximum” position. In this case, the car windows must be closed. You should not drive in this mode for a long time, as this can lead to fogging of the windows.

general information

Grant's cars are equipped with fairly high-quality stoves; the manufacturer equips them with aluminum radiators. The heating system itself is a single complex; in addition to the already mentioned radiator, which acts as a heat exchanger, it also includes other units and components: in particular, a fan, deflectors and air ducts.

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The air ducts are designed to supply air flow from the heater to the windshield vents and to the vents on the dashboard. They also supply air to the air ducts, which ensure its transmission to the feet of the people in the cabin.

While the car is moving, air enters the heater thanks to the holes located in the windshield trim. To increase the power of the air flow entering the cabin, both at the time of movement and during parking, a fan should be used, the rotation speed of which determines the intensity of its supply.

The uniform flow of air inside the car is ensured by an air temperature sensor, the inlet of which must be protected from any contamination. Special switches are provided to control the speed and direction of incoming air. In addition, with their help you can determine whether cold or heated air will come out of the heater.

Remember that the stove does not tolerate violations of operating rules, since each of its elements plays its own, very important role in the operation of the entire heating system. That is why the malfunction of any of its components will disrupt the normal functioning of all the others, be it a broken radiator or a failed tube.

How to remove air from the cooling system grants

Have you noticed that the heater in your car is blowing cold air?
There may be several reasons for the problem, but most often this occurs due to the formation of an air lock in the engine cooling system. Next, we will tell you how to remove air from the cooling system of Lada cars (Granta, Kalina, Priora, Largus, Niva, Vesta or XRAY) in several ways. Let us remind you that AvtoVAZ installs the same type of power units on its models, so the instructions are similar for all Lada cars.

Method No. 1

1. Remove the hose from the throttle body heating.
2. Open the cap of the expansion tank, cover the neck with a clean rag and blow into the tank.
3. When antifreeze starts flowing from the removed tube, quickly put the hose back in place and tighten it with a clamp.

Attention! Coolant is a toxic substance, so we recommend that you use other methods to solve the problem.

Method No. 2

1. Warm up the engine until pressure builds up in the engine cooling system.
2. Stop the engine and remove the hose from the throttle body heating. We do not open the expansion tank cap.
3. As soon as antifreeze runs out of the hose, quickly put it back on and tighten it with a clamp.

Attention! Antifreeze can be very hot, be careful.

Method No. 3

1. With the engine cooled down, remove the upper hose from the expansion tank coming from the radiator of the cooling system.
2. Fill the reservoir to the maximum with coolant and tighten the cap.
3. We place the hose in an empty canister, and put a hose from the air pump (for inflating tires) on the tank nozzle.
4. We pump up the pressure in the tank with a pump, and at the same time the antifreeze will pour into the canister.
5. We monitor the level of coolant in the expansion tank and add it if necessary.
6. After 2-3 additions of liquid, we restore all connections.

If air in the cooling system occurs periodically, then the car’s cooling system is not sealed. Check the connections of all system hoses for leaks, as well as the expansion tank cap.

See also other photo reports on DIY Lada repairs.

How to remove a plug from the cooling system

Today we will talk about how to independently remove an air lock from the cooling system of Lada cars with an electronic gas pedal.

A plug in the cooling system is an accumulation of air that is in the coolant. It impairs the functioning of the cooling system.

Most often, an air lock occurs after draining the coolant from the car - when replacing it, servicing the cooling system, etc. When pouring coolant back through the expansion tank, the air that has entered the system does not have time to escape and remains in the form of bubbles in the liquid. On Lada cars, the air lock most often remains in the heater, since its radiator is located above the level of the expansion tank.

On older cars, without E-gas, it was quite easy to remove the airlock. In these cars, the throttle valve was heated by coolant. Since the throttle valve is located high, it was enough to disconnect the thin coolant supply hose from the throttle before filling in the coolant and slowly fill the expansion tank. At the same time, the air came out through this thin hose. As soon as coolant began to flow through it, filling the system could be stopped. An air lock rarely remained with this method.

But in the case of E-gas, the situation is different. On Lada cars with an electronic gas pedal, the throttle valve is no longer heated, and therefore there is no hose either. How to be?

To remove air from the cooling system on cars with an electronic gas pedal, you need to make sure that the expansion tank is higher than the heater core. To do this, you can use a lift at a car service center, or you can simply drive the front of the car onto a steep hill.

After this, you need to open the hood, get behind the wheel and keep the engine speed at 2-3 thousand.

After warming up the engine until the fan operates, you need to get out of the car and carefully open the expansion tank cap.

In this case, you will see air bubbles coming out of the system - this is an air lock.

After turning off the fan, you need to repeat this operation until air stops escaping from the system. After this, you can tighten the expansion tank cap and turn off the engine. If the air lock has come out, no gurgling sounds should be heard in the heater, and hot air should come out of the deflectors when the heater is turned on.

How to remove an air lock from a car's cooling system: instructions

Hi all! From time to time, in many cars it happens that an air lock forms in the cooling system. It would seem that there is nothing wrong. But in fact, this phenomenon can lead to quite serious negative consequences. That is why I propose to talk about how to remove an air lock from the cooling system.

This problem falls into the category of those that can be fixed with your own hands. You just need to figure out how to remove the air correctly so as not to cause additional harm to other systems of your car.

Before we begin describing the procedures, of which we will have three, I will tell you about the signs of airiness, causes and possible consequences.

If you are ready, then we begin.

Symptoms

Symptoms or signs of airiness are not difficult to recognize. To do this, you just need to pay attention to the uncharacteristic behavior of your vehicle.

Although sometimes it happens that the driver, calmly operating his car, does not even suspect that a harmful air plug has long ago formed inside the cooling system. Signs of such a malfunction are as follows:

• The thermostat breaks. When the fan turns on almost immediately after starting the engine, there is probably a problem in the system. Air sometimes accumulates in the pipes, which provokes circulation only along the internal circuit of the cooling jacket;
• The coolant temperature indicator arrow is in the zero position, even when the engine is warmed up;
• There is a coolant leak. Look under the car to see if there are traces of coolant. This will also help determine where exactly the leak is;
• The engine overheats with enviable regularity. This symptom indicates impaired circulation;
• When the pump operates, extraneous noise occurs;
• The stove is not working properly. It’s not a fact that the reason is precisely airing. But it's worth checking.

If you observe one or more of the symptoms presented, you should check the operation of the cooling system. If you have a new and good foreign car, I don’t recommend going there with your own hands. But everyone decides for themselves.

Cooling

To cool the interior air, do the following:

1. Switch switch 1 (see Fig. 2) of the electric fan operating modes to one of the positions “1”, “2”, “3” or “4”.
2. Place the regulator handle 4 opposite the pictogram.
3. In the 3 pushbutton switch block, press the air conditioner switch key. The indicator located on the switch button will light green all the time the air conditioner is operating.

When the air passing through the evaporator cools, the water vapor contained in it condenses. The condensate is drained through a drain pipe under the bottom of the car. If the ambient air humidity is high, a puddle of water may form under the car, which is an indirect sign that the air conditioning system is working properly.

Turning on the air conditioner while the engine is running under difficult conditions (long climbs, heavy city traffic, etc.) can lead to engine overheating. Monitor the coolant temperature gauge: if the temperature exceeds the permissible value, turn off the air conditioner.

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Lada Granta is one of the most popular cars in Russia in 2020, along with KIA Rio, VW Polo, Lada Vesta, Hyundai Solaris and Hyundai Creta. This popularity of the car is explained, first of all, by the optimal combination of price and quality: Granta owners note good visibility, an acceptable power unit, ease of maintenance, low cost of spare parts, a spacious trunk, high ground clearance, which is extremely important for Russian realities.

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Among the components that are indispensable in the cold season is a heater, the main component of which is the radiator. If a situation arises when it is necessary to replace the stove radiator, then in most cases this can be done without outside help. What should the owner of a Lada Granta remember who has decided to replace the heater radiator on his own?

We carry out diagnostics

If it is cold outside and the interior cannot warm up properly, then you need to check the operation of the cooling system, which has a direct effect on heating the interior.

Coolant level

To do this, you need to open the hood and, with the engine not warmed up, check where the coolant is located.

If its level in the tank is between the minimum and maximum marks, then everything is in order. But, when this level decreases, problems with the tightness of the cooling system are possible, and this leads to a decrease in pressure inside the system. If the problem is not corrected, the stove will not be able to warm the air in the cabin effectively enough.

Typical malfunctions of the heating system Lada Granta

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Rules for using a standard heating system

The car's operating manual outlines the basic principles of operation of the ventilation, air conditioning and interior heating systems. To quickly warm up, you need to switch the damper to the air recirculation position and the fan speed to the “maximum” position. In this case, the car windows must be closed. You should not drive in this mode for a long time, as this can lead to fogging of the windows.

The main reason for the accumulation of condensation is the difference in temperature inside and outside and high humidity. To prevent the windows from fogging up, you need to warm them up by pointing the heater deflectors at them and dry the air by turning on the air conditioning. However, when the vehicle is driven under heavy loads (for example, on long climbs) with the air conditioning turned on, the engine may overheat, so in such conditions it is necessary to monitor its temperature. Condensation is usually the result of luggage blocking the vents.

Incorrect operation of the ventilation and heating system may be caused by a malfunction of the temperature sensor located in the interior lamp. It is not recommended to drive with the windows open in hot weather with the air conditioning running.

The vehicle's ventilation, air conditioning and heating system creates conditions for normal and comfortable driving in any climate zone. AvtoVAZ engineers developed and implemented a simple and reliable heating concept for the Lada Granta model. But for the system to operate effectively, certain rules must be followed, which will help avoid unexpected breakdowns.

Hello everyone, dear friends, especially owners of the Lada Granta car. If you have come to this page, then you are concerned about the question of why the stove does not heat and blows cold air. Let's try to analyze the main causes of this malfunction.

The engine cooling system is responsible for the efficient operation of the heater, and all the heat that enters the cabin comes from the antifreeze, which passes through the heater radiator. And it would be logical if, if the stove is not working well, we check the operation of the cooling system, as well as the main components of this system. So, let's go.

The first reason, the most common one, is the coolant level. If the fluid level is between the minimum and maximum marks, then everything is in order, but if the level has dropped, it means that the system has leaked somewhere and if this malfunction is not corrected, then firstly you will not have enough antifreeze, and secondly the stove will not work well and blow cold air.

Reviews

Conclusion The stove heating system of the Lada Granta is completely copied from the Lada Kalina. There are no complaints about the equipment, everything works properly. In order for the mechanism to serve for a long time, it is necessary to systematically carry out inspection and prevention.

Many motorists save on maintenance, as a result of which the service life is reduced. An important factor is the cloudiness of the antifreeze. The manufacturer recommends replacing it every 75,000 km. Exceeding the interval causes deposits to form at the bottom of the radiator and corrosion begins.