The design of the VAZ 2110 stove of the new model

If you decide to repair your car yourself, you need to have a good knowledge of its components and be able to read drawings. Of course, such skills come with experience in operating and maintaining the VAZ 2110. This time we will study the operation of the heater in detail. If the heating system functions properly, then both the driver and his companions will be comfortable inside the “ten”. This material contains stove diagrams and descriptions for them. The instruction manual also contains this information, but we try to describe complex processes in simple language. Our task is to convey important information to beginners and experienced motorists.

This is what the disassembled heating system of a VAZ 2110 car looks like

Heater damper VAZ 2110: causes of malfunctions and repairs

On the VAZ of the tenth family, which includes the VAZ 2110-2112 models, the designers used an electronically controlled internal heating system, thanks to which the temperature set by the driver is maintained automatically.

On the VAZ-2110, instead of a manual heater control mechanism with a cable drive, the main elements are: a coolant supply shut-off valve and dampers, an automatic heater control system (AHC) controller with a temperature sensor and gear motors that regulate the position of the blinds.

This type of furnace no longer uses an antifreeze shut-off valve, and the heater operating mode - “heating” or “ventilation” - is controlled by a central damper, which directs the air flow through the radiator or bypassing it.

20.2.8. Heating and ventilation system for cars with VAZ-21114 and VAZ-21124 engines

On cars of the “tenth” family with VAZ-21114 and VAZ-21124 engines, a new type of heater housing is installed with different attachment points to the body and a modified location of the fan electric motor. A different circuit for supplying fluid to the heater radiator was also used.

In the circuit for switching on the electric motor of the heater fan, an additional resistor of a new type is used, equipped with a built-in fuse.

...can be either three- or four-pin (four-pin assembly shown) - for three- and four-way switches, respectively

To diagnose the heating and ventilation system, its controller is connected to the diagnostic block of the engine control system.

Now you can check the operation of the heating and ventilation system using a diagnostic tool.

Central ventilation nozzles with horizontal movement of the air flow adjustment handle can be installed in the car interior.

The vehicle may be equipped with a cabin air recirculation system. If a recirculation system is not installed, the car is equipped with a filter for cleaning the air entering the interior ventilation and heating system.

Replacing the air purification filter entering the interior ventilation and heating system

Without disconnecting the washer hose, remove the wind window trim (see Removing the wind window trim and trim) and move it to the side (for clarity, the car hood has been removed).

Using a Phillips screwdriver, unscrew the four screws...

Drain the coolant (see Replacing the coolant).
We remove the wind window trim (see Removing the wind window trim and trim), the right side of the soundproofing trim (see Removing the wind window trim and trim) and the throttle assembly (see Removing the throttle assembly).
We loosen the fastening of the inlet pipeline: we unscrew the cap nuts of the upper fastening completely, and we do not unscrew the two bolts and three nuts of the lower fastening completely.
We loosen the tightening of the self-tapping screw securing the guide tube of the oil level indicator and lift the tube so that its fastening bracket disengages from the self-tapping screw.
Remove the ignition coil of the first cylinder.

We disconnect (can be cut) the clamp securing the block of the heater motor power wires and the additional resistor wires.

Disconnect the heater motor power supply wire block.

Disconnect the wire block from the additional resistor connector.

Use a Phillips screwdriver to loosen the clamp...

...and disconnect the supply hose from the upper pipe of the heater radiator.

Use the same tool to loosen the clamp...

...and disconnect the outlet hose from the lower pipe (it has a smaller diameter than the inlet).

We do not disconnect the steam exhaust hose from the heater radiator, since its fastening clamp is difficult to access. It is easier to disconnect this hose from the expansion tank branch pipe (see Removing the expansion tank) and remove the heater housing along with the hose.

We remove the steam removal hose from the clamp on the windshield wiper rod.

Disconnect the power supply block from the micromotor-gearbox of the damper drive.

Disconnect the wiring harness from the throttle position sensor.

Using a 10mm socket with an extension, unscrew the nut of the upper fastening of the heater housing to the body on the right side of the engine compartment.

Using a socket or an 8-point wrench, unscrew the self-tapping screw of the upper fastening of the heater housing, located next to the fastening of the windshield wiper drive rod.

Unscrew the nut of the upper fastening of the heat shield of the steering rack cover.

How the stove works on a VAZ 2110

Problems in the operation of the heating system on the VAZ "Ten" arise quite often. For this reason, owners of this car from the domestic automobile industry need to devote a lot of time to solving the problem or contact service center specialists for help and payment for repairs.

To understand how to repair a VAZ 2110 heater and carry out preventive measures, you must first think about what parts it is made of.

In addition, this unit includes many other components - valves, fittings and other elements combined into one unit. The unit is enclosed in a housing and placed under the hood near the dashboard.

How to determine if there is a fault in the electrical network

First of all, the red light will light up, signaling a failure or serious problems in the car’s electrical systems, even if you installed a Europanel instead of the factory version. Immediately take the following steps to identify it and do not ignore the warning under any circumstances; this is why the light bulb was made threateningly red. Don't ignore the problem!

Let's start diagnostics:

see if everything is ok with the generator. Is it put on well, is it sagging? This procedure must be done with all versions of the fuel system, both carburetor and injection. It also doesn’t matter whether you have a standard configuration or 16 valves;
We check the fuses on the VAZ-2112 according to the electrical diagram that we discussed above. The reverse side of the safety block cover will also be of great help. There are clues there that the diagram will help you decipher. Replace the burnt out element and try to start the car again. If the light goes out, then we have solved the problem;
If the red light on the dashboard does not decrease, you need to check whether the battery terminals are tightly connected and whether they have oxidized. Is the wire going from the battery to the generator and to the starter damaged?

The stove does not blow at the feet of a VAZ-2112

These are some recommendations for eliminating widespread difficulties associated with faulty electrical networks of a VAZ-2112 car with 8 or 16 valves. Of course, this review cannot examine all problems and provide information on how to fix them. For example, where to look for the reason for the de-energization of turn signals or pumps that ensure stable operation of the vehicle.

It’s good that the cooperation of car enthusiasts and their timely tips help save time, money and nerves when the car needs repairs.

VAZ 2110 stove, heater, fan, dampers, video of replacing the VAZ 2110 stove radiator

The VAZ 2110 stove is perhaps the most problematic and capricious mechanism in the entire car design. A VAZ 2110 cannot be avoided without a faulty internal heater of the stove or radiator, given our cold climate. If in the summer a non-working stove may not bother you, then with the onset of cold weather it often turns out that the stove on the VAZ-2110 blows cold air. Today we will try to tell you in detail about the design, repair and replacement of heating elements in the “top ten”. For clarity, we will supplement the text with photos and videos.

Let’s say right away that the design of the heating system in the “ten” is fundamentally different from what was on the old VAZ models. The most important feature and difference of the internal heater is that the radiator of the VAZ 2110 heater and its fan are located not in the passenger compartment, but in the engine compartment. This design has its advantages, for example, to replace a heating radiator or stove fan, you do not need to completely disassemble the front panel (instrument panel).

Another important difference is the electronic control of climate processes in the cabin. To do this, the VAZ 2110 is equipped with a so-called automatic heater control system (AHC). Photo of the SAUO block below.

By the way, the SAUO unit on the “ten” of several years of production is different. Since 1996, 4 types of SAUO controllers have been produced. This should be taken into account when purchasing the unit as a spare part. It is this device that controls the temperature in the cabin and the operation of the fan. The temperature can be set from 16 to 28 degrees.

But how does this miracle device work? On the ceiling of the Dozen cabin there is a temperature sensor or ceiling air sensor with a built-in (very small) fan for air circulation. It is this sensor that sends information about the actual temperature in the cabin, and the SAUO unit gives a command to the micromotor gearbox (MMP), which, in turn, opens or closes the main damper, which is responsible for the access of hot air to the cabin. When the temperature in the cabin changes, the ceiling sensor sends a new signal, the micromotor-gearbox is activated by turning the damper, closing or opening the access of hot air into the cabin. Thus, the set temperature regime is maintained automatically. Also photo of the VAZ 2110 heater air duct diagram.

Principle of operation

The operating principle of such a control system is simple - the driver uses the left handle to set the desired temperature (completely cold or in the range from 16 to 28 degrees). Based on the set mode, the controller supplies power to the micromotor gearbox and it sets the dampers to the desired position.

Two-way communication is used between these elements - a position sensor is installed on the gearbox, which “informs” the controller about the opening angle. Thanks to the installed temperature sensor (located on the ceiling), the controller constantly monitors the degree of heating of the air in the cabin, based on which it adjusts the position of the damper to maintain the temperature set by the driver.

Connecting the VAZ 2110 stove - Do-it-yourself car repair

Car heating systems often fail in winter. During this period, the stove is used much more often, which means that all the weak points of this device appear. The control unit for the VAZ-2110 stove often fails, as do other elements of the system. Today we will pay special attention to this node.

Design of the heating system VAZ-2110

It includes three main nodes. This is a control unit for the VAZ-2110 stove, an air duct system, and a heating unit. The oven is controlled by an electronic unit. It consists of knobs with which the driver sets the desired temperature and fan intensity. The unit also includes a temperature sensor.

As for the latter, it is necessary to automatically start the stove when the temperature inside the car drops more than two degrees below the set one. The sensor is equipped with a small fan. If you move the control knob to position A, a small electric motor in the heating block will start, which operates the damper.

The temperature sensor itself in the VAZ-2110 is located on the ceiling, near the lighting lamp.

Another important element of the heating system is air ducts. They are launched directly from the furnace itself, and each channel performs its own separate function. Therefore, the central channels are designed for internal ventilation.

The air distributor is responsible for supplying fresh air to the cabin for ventilation or hot air for heating. The other two air ducts are designed to heat the rear passenger compartment. The rest is also intended for ventilation. Two side channels heat the mirrors and part of the interior. Separate nozzles are used to heat the driver's feet.

Block responsible for temperature

The central unit of the stove system is the heating block, the function of which is to directly heat the interior. This block is organized as follows. An electric motor with fan blades pumps hot air, three dampers perform the function of recirculation and closing / opening of channels. There is also a radiator.

In modern new generation systems, heat exchangers do not have a valve. Therefore, the radiator is always hot, regardless of the time of year. The manufacturer claims that this solved the problem with the constant leakage of the faucet. In addition, heating of the interior is significantly faster. In summer, the supply ventilation comes out of the radiator.

Typical faults

In summer, problems with the stove are very difficult to detect. Practically not used for its intended purpose. With the onset of winter, the question of the efficiency of the heating system becomes more pressing. Let's look at the typical faults that VAZ-2110 owners most often encounter. In case of serious problems, only replacing the VAZ-2110 stove can be an effective solution.

If the mechanism is not working efficiently, the first thing you need to do is check the amount of coolant. They look at the expansion tank - there are warning signs and a system lock indicator on it. If there is not enough liquid, add more. Sometimes even after topping up, the coolant level drops. This may indicate leaks.

Modernization of the damper on the VAZ-2110

Malfunctions with the damper often result in the interior heating very poorly and slowly. The error is the VAZ-2110 heater control unit. The controller is not working properly. The device does not issue a command to extend the flap. In this case, it is recommended to check the temperature sensor.

The controller handle is set to its extreme position and then unscrewed several times from left to right. The air flow temperature must be adjusted manually. In this way, the operating condition of the sensor is checked in one of the extreme positions of the handle.

If the air flow changes the temperature in the extreme position of the knob, the sensor must be replaced. If warming does not change, the cause must be looked elsewhere.

The design and principle of operation of the cooling system of the “tens” engine.

Any cooling system is designed not only to cool parts, but also to perform some other functions, namely:

ventilation and air conditioning, heating the air in the heating system;
cooling air in the turbocharger;
cooling the working fluid in the automatic transmission;
cooling the lubricant, or rather the oil in this system.

Design of the cooling system of the VAZ 2110 injection engine.

Heater radiator
Heater radiator steam hose
Outlet hose
Supply hose
Coolant temperature sensor (in the cylinder head)
Pump inlet hose
Thermostat
Charging hose
Expansion tank plug
Coolant level indicator sensor
Expansion tank
Outlet pipe
Carburetor starter fluid chamber
Radiator outlet hose
Radiator inlet hose
Radiator steam hose
Left radiator tank
Electric fan switch sensor
Fan motor
Electric fan impeller
Right radiator tank
Drain plug
Electric fan shroud
Timing belt
Coolant pump impeller
Coolant pump inlet pipe
Coolant supply hose to throttle body
Coolant drain hose from throttle pipe
Exhaust coolant temperature sensor
Radiator tubes
Radiator core

The principle of operation of the cooling system of an injection engine.

If we talk directly about the cooling system of the VAZ 2110, then it is liquid, its circulation occurs forcibly, and is filled into the expansion tank.

The basis for creating the liquid used in this system is water combined with ethylene glycol. Such a liquid can freeze only at the lowest possible temperatures, and also create an elevated boiling point. By adding various additives to it, you can increase the service life of the oil seal, as well as slow down the process of corrosion of the system itself. Full filling of liquid requires the latter in a volume of 7.8 liters.

The movement of liquid throughout the cooling system of the VAZ 2110 injector is ensured by a centrifugal pump, which is fixed in the cylinder block and is activated by the timing belt.

As you know, the liquid gradually heats up from the friction of the working surfaces of the parts. And depending on the reached temperature of the liquid, the cooling system initially circulates in a small circle, and after heating it begins to move in a large circle. That is, when a certain heating point is reached, the thermostat is triggered, after which it opens and changes the direction of movement of the liquid. This process is already regulated by a pair of valves located in this thermostat. In it, the bypass valve regulates the movement of coolant in a small circle, and the main valve in a large circle. Thus, when one of these valves opens, the other closes, and vice versa.

Until the engine warms up well, the bypass valve is in the open position, and the coolant flows in a small circle through the cylinder block, throttle valve and heater radiator. This heating radiator is built directly into the engine cooling system, therefore, when liquid passes through it, the car interior is heated.

At the moment when the coolant is heated to 85°C, the main thermostat valve begins to open when the bypass valve closes. At this moment, the coolant flows simultaneously through both the small and large circles. And already at 102°C, the liquid enters the radiator, flowing only in a large circle. There, thanks to the flow of air from the outside, it is cooled.

It turns out that the injection system of the VAZ 2110 engine is designed in such a way that if the air flow does not cool the liquid well, then the fan is automatically turned on using a signal from the electronic control unit. And in the case of strong heating of the liquid, its volume begins to increase, and then its excess returns back to the expansion tank. This tank contains a valve that maintains the required pressure in the system.

It is necessary to monitor and check the coolant level only when the car’s power unit is cold. If you notice a regular decrease in it, be sure to check the entire system for leaks. Well, a complete replacement of the coolant in the VAZ 2110 injector must be done every 75,000 kilometers.

How the VAZ-2112 stove works

Driver comfort is largely determined by the normal operation of the stove. In VAZs, it is this system that most often fails, and in order to quickly solve the problem, you need to become familiar with the design of the stove, understand its circuit and have a good understanding of the principle of operation. In this article we will talk about the heating system of the VAZ-2112.

Driving comfort in winter depends on proper operation of the stove

Heater fuse

As you know, to protect electrical circuits from short circuits or overloads, a special fuse is used, which in case of any problems blows and de-energizes the circuit.

This device protects the power supply circuit of the heater motor; if overloaded, this fuse blows, which completely disables the interior heater. To get the stove running again, you need to replace the fuse with a new one, but to do this you need to know where it is.

Where is

The heater fuse is located in the fuse block under number F18 and has a rated current of 25A. It is necessary to install only a fuse of the same rating to avoid damaging the circuit in the event of a short circuit or overload.

How the oven works

VAZ 2110 models of the first years of production are equipped with an old-fashioned stove.

You should know that the design of the old-fashioned VAZ 2110 stove does not differ significantly from the new version, regardless of the power unit used, with the exception of a few points that will be discussed below:

even micro gearboxes are different. Older elements have slightly different resistors. Therefore, before starting repair work, make sure that the appliances are truly interchangeable, and that you purchased old heating elements for the old version of the oven, and not new ones. Otherwise, difficulties will arise with the functioning of this element.
radiator design. The main difference between ovens is this. So, if you intend to install a new radiator instead of an outdated version, then you need to take into account some installation nuances;
The controller handle on the devices is slightly different. Old technology has a serious drawback: it is no longer produced. For this reason, position controls 4 and 5 manufactured before 2004 are not suitable for a new oven;

How to fix a stove

As already mentioned, the heating systems on VAZ 2110 models are practically no different from each other in design. And it doesn’t matter which engine is under the hood: carburetor or injection.

So the repair manual described below can be used by all owners of “dozens” of VAZs.”

If you are planning a major overhaul of a stove manufactured before 2003, we recommend purchasing a radiator first. A copper element is more suitable as it is more efficient and allows the stove to perform better.

Repair

As we have already noted, the design of stoves on dozens with carburetor and injection engines has practically no differences. Therefore, the repair instructions below are suitable for owners of a VAZ 2110 with both types of power units.

If you are planning to overhaul your old-style stove, we recommend starting with the purchase of a radiator. Use copper as it is more efficient and helps the heater work better.

To carry out repairs correctly, strictly follow the points presented in our instructions and rely on video materials.

There is a plug on the engine block through which coolant is drained into any container. If you plan to use the same antifreeze or antifreeze again, choose clean containers.
Next you need to move the frill forward. This process will take quite a long time, so be patient.
Next, you need to remove the windshield wipers and get rid of as much as possible of everything that could interfere with the repair process.
Remove the body of your stove. It is divided into two parts, which is important to know in advance. The front part of the stove body is removed directly along with the fan.
After this comes the stage of dismantling the cabin filter. Check its current status. If the filter is dirty, this is an excellent reason to replace it.
The next stage involves removing the second part of the housing.
Loosen the clamps used on the hoses a little. This will allow you to easily remove the hoses.
Having applied some effort, you can now finally remove the radiator from its seat.

Problem solving

Now let's talk about how to troubleshoot problems that arise, troubleshoot problems, and return the heater to normal operation.

Each breakdown requires separate consideration.

Temperature not regulated

If it is not possible to regulate the temperature of the air flow, the problem lies in the control unit or damper, or the temperature sensor on the ceiling inside the cabin does not work.

To check, turn the control all the way to the right and place your hand under the air stream. If hot air only flows when the control is in the maximum heating position, replace the sensor. If this does not help, replace the regulator. When heat is transferred to other places on the controller, the sensor should not be at fault.

Be sure to check that the shock is not blocked. You can get to it through the engine compartment. If replacement is required, replace the standard plastic curtain with an aluminum one. It's more durable.

Blowing cold

If the heater on your VAZ 2110 starts blowing cold air, then you need to look for the reasons. The reason for the failure lies in the gear motor. A similar situation occurs in 9 out of 10 cases, so it is unlikely that you will have to look for alternative culprits.

The gear motor must be replaced. This is done as follows:

The fringe and windshield wipers are back in place. Job is done.
Wipers removed;
Unscrew the three screws holding the gear motor;
The ruffle is dismantled;
Disconnect the wiring;
A new one is installed in place of the failed device. Ask an assistant to change the position modes of the regulator and at this time you will install the gear motor;

But there is 1 case out of 10 that will force you to change the heater due to wear and tear of the old one. As the practice of VAZ 2110 owners shows, the heater from 2112 is more suitable for replacement. In addition, you can choose between two stove options: 2112-01 or 2112-02. The first option is without an air filter, and the second option is without it.

The windows fog up, the feet are not heated

VAZ models often have a problem when the air comes out of the stove normally, but does not warm the feet and does not go into the glass.

The problem can be solved by updating the air ducts and eliminating existing cracks in the cabin and hot air ducts. This is a rather complicated procedure, the implementation of which will allow you to forget for a long time about the problem with the stove, which does not heat the legs and does not blow up the side windows.

It would not be superfluous to mount a pre-heater. Due to this, the interior heats up faster.

The main reasons for poor operation of an electric furnace

Before you can directly begin to find a solution to a problem, you need to be able to identify it quickly and effectively. First, it is advisable to consider the general structure of the furnace. So, the heater furnace consists of the following components:

mounting block fuse;
incendiary lock;
ignition switch together with its unloading relay;
a special switch that regulates the operating mode of the furnace electric motor;
additionally built-in resistor;
stove motor;
heated rear window of the car, which contains a heater adjustment button with a light indicator;
a special functional element for heating glass.

VAZ 2110 stove wiring diagram

One of the reasons for the malfunction of the electronic circuit of the furnace may be the lack of functional activity of the heater electric motor at both low and high speeds. In this situation, you must proceed as follows:

First you should make sure that the fuse has not accidentally blown;
If a blown fuse is detected, it will urgently need to be replaced with a new one.

Note. Before proceeding directly to replacing the old fuse with a new one, it is necessary to first and without fail establish the cause of the burnout. If this is not done, the service life of the new fuse will most likely be short.

There may also be a break or damage to the wiring at the point of its connection;
to eliminate the above reason, it is necessary to check the electrical circuit according to the furnace diagram;
after which, it is necessary to eliminate the impulse, if it took place;
if the heating switch does not function, then the most likely cause is a stuck pusher or burnt contacts;
to accurately diagnose a switch malfunction, you need to check the voltage level at the side terminals while changing the position of the switch in space (to do this, it is enough to apply current to the main terminal);
if during diagnostics a change in voltage is not detected when changing the position of the switch knob, then it must be urgently replaced;
there are a huge number of possible reasons for the electric motor to fail to operate: broken electrical connections or armature winding, immobilized cleaning brush, oxidation and/or contamination of the armature commutator;

VAZ 2110 heater radiator diagram

It’s not difficult to revive the movements of the brush again; just disassemble it and then clean it;
restoring the wires will also not be difficult, because the main thing is to find the location of the defect;
if several of the above provisions do not produce results, then there is only one way out - a complete replacement of the heater electric motor;

VAZ 2110 stove electrical diagram

sometimes, which is extremely rare, the cause of the malfunction may be the mounting block;
There are many reasons for the faulty state of the mounting block, but the main ones are: at the soldering site, a complete or partial break in the electrical circuit, fire of current-carrying paths;
The circuit should be checked according to the furnace diagram, otherwise it will simply be impossible to detect breaks and faults;
the final practically probable cause may be an internal break in the circuit of the auxiliary (additional) resistor (see How to replace the heater resistor on a VAZ 2110);

Components and processes of the VAZ-2112 heater

resistor;
electro-pneumatic valve;
damper on the stove channel;
recirculation flap control valve;
radiator and its casing;
stove control damper;
water-reflecting air intake deflector;
fittings for steam outlet and supply pipelines;
cover from the stove lining.
casing from the air intake of the heating system, consisting of front and rear parts;
micromotor-gearbox with damper control;
stove motor in the housing and fan;
support platform for the heater control hatch activation lever and the lever itself;
recirculation deflector on the air intake;

The radiator is located horizontally under the instrument panel. It is enclosed in a plastic case. The radiator design includes two plastic tanks and a pair of aluminum tubes on which plates are molded. There is a steam outlet on the left side of the tank. The passage of intake air through the radiator depends on the position of the dampers. If the shock absorbers are in the extreme position, all the air flow may pass through the radiator or not at all.

Lack of tap - plus or minus?

While older VAZ models have a tap that can be used to shut off the supply of antifreeze to the radiator, the VAZ-2112 is not equipped with such an element. If the engine is running, the radiator heats up regardless of the time of year. This design feature of the stove makes it possible to achieve a small inertia, which is inherent in the system when starting up. In other words, the required temperature will be reached in a shorter time. Additionally, the user will not have to deal with leaks that occur as a result of a leaking faucet. The electronic control unit, which generates the necessary commands, is responsible for the ability to conveniently control the operation of the stove.

Step-by-step replacement process

First, remove the doors, seats, bumper and front fenders. Also remove carpets, seat belts and sound insulation.

Protect your car windows. Sparks from grinders and welding can damage them. It is also advisable to cover the doorway with cardboard so that nothing gets into the interior.
Disconnect the negative terminal of the battery.
Place the vehicle on a pit or tipper.
Attach the new threshold and use a marker to mark the lines along which you will cut the old one.
Use a grinder to cut through the previously marked areas.
We core all the contact welding points along the edges at the top and bottom of the threshold. Next, we drill out the points, and then use a body knife to separate the metals from each other.
After you have separated the threshold, remove it and evaluate the condition of the bottom, amplifiers and connectors. If necessary, cut off rotten parts of amplifiers, connectors, or remove them entirely.
Cut out the required pieces from the repair parts and weld them in place.
Prime all welds and repair inserts with epoxy primer, having previously “filled” the abrasive with a scratch to create conditions for good adhesion of the materials.
Cut the butt pieces to size and drill holes for welding along the edges at the top and bottom of the threshold.
We clean all welds, grind the threshold with abrasive and apply epoxy primer.
We apply sealant to the non-facial welds, putty on the facial seams and paint. You can also apply an anti-corrosion agent, for example, Body Autoflex, before painting.
After all the work has been done, anticorrosive the hidden cavities with Movil or Pushsal.

Description of the heating system on "Dvenashka"

In VAZ 2112 cars, supply and exhaust ventilation is used. In this case, the air flow enters through special holes that are located in the windshield lining. The air itself can be supplied forcefully, under the influence of a heater fan, or arbitrarily. Air flows out of the cabin through gaps located between the door panels, as well as at their ends. Special valves are built into these openings that allow air to escape and also delay its entry, improving the thermal insulation of the cabin.

Where does the noise in the top ten come from?

The main sources of noise in the cabin of the 2110 and methods for eliminating them, schematically, are given below:

noise from the engine compartment can be eliminated by insulating the engine shield and floor with special materials, of which there are plenty on sale;
noise from wheels and from road gravel and dust can also be removed in several ways - with noise-insulating mastic, plastic fender liners coated with Bimast, or the combined use of both;
Aerodynamic noise is the most difficult to eliminate, since in this case you will have to set all the gaps between the body panels and the hood, doors, and wings to their nominal value, and this is not so simple and not so effective.

Design Features

The VAZ 2110 provides for the installation of two types of stoves - a new model and an old one. Regardless of the engine used (injection or carburetor), there are no fundamental differences in the design of the stove.

But what is the difference between new and old stoves? Let's try to figure it out.

Since September 2003, several micromotor gearboxes have been installed in the furnaces. The difference lies in the shaft position sensors (resistances). Therefore, when repairing, make sure that the devices are truly interchangeable and that you purchased old-fashioned resistors for your old stove, and not a new one. Otherwise, the gear motor will not work.
Radiator design. This is the main difference between the devices. Therefore, when replacing a radiator from an old one to a new one, be sure to take into account the installation nuances;
The controller knob on the plates is slightly different. There's a big problem with old-fashioned heaters: They're out of production. They cannot be analogues of 4- and 5-position regulators, which began to be supplied in dozens in the fall of 2003;

Common faults

Most often, the VAZ 2110 suffers in terms of heating because the heater adjustment, as they say, does not work. Regardless of the selected position of the temperature control knob, only cold or, conversely, only hot air blows from the heater.

The reasons for this phenomenon may have different origins. Among them:

Jamming of the MMR (micromotor-reducer) that controls the damper drive; The plastic damper (the first VAZ 2110 was equipped with these) has a destroyed seat, and due to jamming it is impossible to control it normally. If the gearbox is working, but the damper does not turn, you can most often hear peculiar clicks - this is the square shaft turning in the socket. For such a malfunction, there is only one treatment - replacing the old plastic damper with foam insulation with a new one. Better, more modern, metal, with a rubber seal

This one does not warp or warp like its plastic sister; To finally decide who to blame - the damper or the MMR, you still need to pay attention to its control unit. He is also among the “suspects”.

Heating device design

The heating of the VAZ-2110, thanks to which a motorist can feel comfortable in his mobile property at any time of the year, consists of several separate devices that work in close contact. The central device of the unit is the radiator, with the help of which the air flows entering the cabin are heated. In order to repair or replace the radiator, you will have to look for ways to get under the hood.

The second most important device can be called an air distributor, in which several nozzles operate in the “ten” of the cabin. Compared to the old-fashioned models that preceded the release of the VAZ-2110, the new car has an evaporator that has found a place in the air conditioning system.

The operation of the stove is controlled by a special control unit. In the VAZ-2110 operating instructions, this device has a different name (controller). The unit works in conjunction with a temperature sensor located in the cabin. The sensor transmits temperature information to the unit, after which the data is compared (the information displayed on the handle is taken into account). As soon as the system detects a temperature difference of 2°, hot or cooled air is immediately supplied to the cabin.

To understand how the heating element works, you need to pay attention to the handle of the device; Two extreme positions deserve special attention: MAX and MIN. The fact is that when you set the knob to one of these indicators, the system begins to give off heat, not taking into account the data from the temperature sensor.

The VAZ-2110 stove includes a device such as a gear motor. The task of this device is to open and close the damper. The small electric motor is extremely important in the operation of the heater. Even with a minor malfunction of the gear motor, the system will be able to supply the car owner with either only cold or only hot air. If this device fails when the damper is closed, the entire system will cease to perform its function. Main components of the heating device:

gear motor.
radiator;
SUAO block;
ceiling sensor;
lever arm;
a device that distributes air flows;
shock absorber;

Purpose of the radiator

The VAZ-2110 stove of the new model has a radiator through which the air entering the car is heated. Quite often on the global network you can find diagrams in which the radiator is designated as a heat exchanger. The heating process in the device occurs due to the flow of hot antifreeze. The radiator is connected to the cooling system of the power unit through several pipes and hoses. The refrigerant circulates continuously inside the heat exchanger. The position of the damper determines the volume of incoming air and its direction. When the heater damper is in an intermediate position, part of the air passes through the heat exchanger, and the remaining volume bypasses the radiator. The diagram shows that the new radiator design differs from other models in several useful improvements.

Car chip tuning

Chip tuning is nothing more than reprogramming the engine control system. The entire farm is managed by a special controller. Changes in the operation of electronics are achieved by either completely replacing the memory chip or reprogramming it. This controller has been calibrated at the factory to the average machine performance. To be able to influence various characteristics, fuel consumption and much more, just change the calibration.

Programmers and electronics engineers who deal with these problems have created the necessary programs for chip tuning. Some of the most popular calibration settings are “sport” and “economy”. The first is designed for dynamic driving in the city or on the highway, with a slight increase in fuel consumption. The “economy” mode allows you to drive a car in city conditions more economically.

Device diagram with all explanations

The operation diagram of the VAZ-2110 stove can tell the motorist about the presence of recirculation in it, in other words, moving air flows circulate inside the car without taking new volumes of air from the street. Thanks to this, dust and unpleasant odors, which are present in large quantities in the street air, do not enter the unit. However, it is worth noting the main drawback of such a system - the windows fog up too quickly. Experts recommend opening windows often (at a comfortable temperature outside). Otherwise, the stagnant air will negatively affect the health of everyone involved in driving this car. Due to the complexity of repair, the gearmotor must be completely replaced in case of malfunctions.

Introduction

It is impossible to independently repair your own car without knowledge regarding the structure of all components. The skill of reading any drawings is considered equally valuable. Such skills can only be acquired by having certain experience, which comes over the years in the process of operating and maintaining your car. In the article below we will look at the design of the VAZ-2110 heater.

It is no secret that a properly functioning heater device in the top ten of the domestic automobile industry allows the driver and passengers to feel as comfortable as possible while driving. The article discusses the connection diagram of the unit and provides a description of the elements that make up the stove. The information can be useful not only to novice amateur mechanics, but also to experienced craftsmen who have difficulties repairing the heater.