Stove VAZ 2107: design and repair. Self-repair, maintenance and tuning of the VAZ 2107 stove

Design and principle of operation of the VAZ 2107 heating system

The VAZ 2107 stove creates and maintains a comfortable air temperature in the cabin and prevents the windows from fogging in cold and humid weather. It consists of:

heater;
fan;
control unit.

Outside air enters the casing of the air intake chamber located in the engine compartment under the windshield through an opening in the hood. It is then sent to the heater, where most of the moisture it contains condenses. However, until the radiator is completely warmed up, slightly humid air will enter the cabin.

The heater radiator is heated by coolant coming from the cooling system. The temperature is regulated by a special tap that partially blocks the flow of hot coolant going into the heating system. The more heated liquid enters the heater radiator, the warmer it will be in the car. The position of the tap is changed by a regulator from inside the cabin using a flexible rod .

Air enters the cabin using a heater fan, the rotation speed of which is regulated by a special resistor. When the vehicle is moving at high speed, the heating system can operate without the fan turned on. The air flow entering under the hood creates increased pressure in the air intake box and forces warm air into the cabin.

The heating system of the VAZ 2107 is quite simple (warm air flows are indicated in orange, cold air flows in blue)

Through an air duct system, heated air is directed to different parts of the cabin, as well as to the windshield and side windows, preventing them from fogging in cold and humid weather.

The operation of the stove is controlled using several knobs on the instrument panel. The upper handle regulates the position of the heater tap (the extreme left position is the valve is completely closed, the extreme right is fully open). Using the middle handle, the position of the air supply cover is changed. By turning it to the right and left, the intensity of the warm air supply increases and decreases accordingly. The lower handle regulates the dampers of the heated window ducts. In the right position, the air flow is directed to the side windows, in the left position - to the windshield.

Where is the heater radiator installed on the VAZ 2104–2107 and what functions does it perform?

The heater radiator on all classic Zhiguli cars is located in a special box under the front panel. The product is a heat exchanger, the main function of which is to transfer heat from the coolant (antifreeze) with subsequent distribution throughout the cabin. This unit works in the same way as the main radiator of the power unit. For the stove to function correctly, the heat exchanger must be constantly heated. This is achieved by connecting the radiator to the engine cooling system using tubes and rubber pipes and constant circulation of liquid through a water pump (pump).

The heater radiator on the “classic” is located in a special box under the front panel

Diagram and design of the heating system in the VAZ-2107

The design of the heating unit on “sevens” with a carburetor engine or injector is identical:

Blower The line is aimed at blowing the windshield.
Airflow cover.
Radiator unit.
Radiator protective cover.
Heating unit faucet pull.
Radiator outlet line.
Underwater pipe of the radiator assembly.
Radiator tap. Used to drain refrigerant.
Blower Designed for blowing air flow through the glass of the right window.
Nozzle for supplying air flow to the side glass.
Air duct damper intended for blowing right glass.
Additional resistor device.
A cover located on the air flow distribution device.
Blower damper for heating the windshield.
Electric fan motor for heating system.
Impeller of the ventilation device.
Blower in the internal ventilation system.
Cover air flow control knob.
External blower flap control handle to direct air flow to the windshield.
Bracket for fixing air flow control handles.
Lever for controlling the blower flaps of the heated glass system.
Airflow cover control handle.
Radiator faucet control lever.
Air flow cover pull.
The damper rod designed to control the heated windshield.
Left blower for heating the side window.
Ventilation nozzles located in the center of the console.
Nozzle blade.
Directly the nozzle of the heating system.
Nozzle handle.
Toothed pulley of the damper drive device.
Air inlet seal located at the rear.
Air supply pipe.
Front sealing element of the air supply pipe.
Air supply valve.
The latch of this hose.
Damper equipped with a gear sector.

Diagram of the heating unit VAZ 2107

Three levers are used to control the heating system:

The top one is designed to supply refrigerant to the radiator unit. This slider is connected to the faucet via a cable. It is mounted on the inlet line. In the extreme left position, the device does not work and the heating unit does not heat. If you move it to the right state, it will open and the coolant will enter the radiator device.
In the middle position, it is possible to control the air flow flaps. If the slider moves to the left state, the air supply from the street is cut off. It will only circulate inside the car. When moving to the far right position, air flows from the street into the car.
In the lower state, the damper is controlled, which is designed to distribute the air flow among the blowers. In the extreme left position, the flow flows to the side deflectors and to the center, and in the right position - to the windshield.

Each of the listed levers can be set to any state, this will allow for optimal functioning of the heating unit.

Control

The operating principle of the VAZ stove control is based on pure mechanics. Externally, the unit looks like a small panel with slider levers and a separate button that activates the fan. All this is located in the center console area, that is, at the driver’s fingertips.

The structure of the block is as follows:

the topmost lever opens (or closes) the valve that supplies coolant;
the slider located in the middle is connected to the air supply damper;
lower - distributes heat over the sleeves.

The extreme left position in the first two cases means that the function is disabled, that is, the stove does not heat and air is not supplied from outside. Moving the levers to the right activates the heater or opens the damper. So, if the heater is not activated, but the air intake is turned on, then the cabin space is ventilated.

With the last, lowest switch, everything is different. If you move it to the far left position, the heat will flow to the side windows and into the center of the cabin. In the right position, hot air is directed to the forehead.

The smooth adjustment of all three sliders provided by the designers allows you to fine-tune the operation of the stove as accurately as possible.

Causes of malfunction in the heating system

Sometimes drivers notice an antifreeze leak inside the car. The reason for this may be a rusted radiator or heater tap, as well as its metal pipe. Accurate “diagnosis” can only be carried out by visual inspection. If the defect lies, for example, in the pipe or faucet of the stove, then they can be easily replaced, especially since today there are no problems with purchasing any spare parts. In this case, you don’t even have to disassemble the casing and instrument panel. If the culprit of the cooling antifreeze leak is the radiator itself, then in this case there are two options for solving this problem. Firstly, if the car has an old-style copper radiator, then it can be repaired: soldered, cleaned, tinned, etc. The main thing is to find a good specialist. The second option is when the car has a VAZ 2107 stove with an aluminum radiator. In this case, everything is a little more complicated: it must be replaced with a new one, since it cannot be repaired.

In some cases, after turning on the heater, cold air continues to be blown out of the car's air ducts. The reason is a disruption in the circulation of coolant. This happens due to the fault of a damaged heater tap, or the radiator itself may be clogged. If the faucet is jammed, it needs to be replaced, but in the second case, thorough cleaning is necessary.

How does the heater work?

The operating principle of the heating device is very simple. After opening the tap, the coolant begins to circulate through a large circuit and is supplied to the heater radiator. When the air intake damper is moved back, it passes into the radiator, where it heats up and is then sent to the passenger compartment.

If the car is driving fast, then the natural flow is enough for the stove to work well and effectively heat the cabin. In this case, the fan is not turned on. In other situations you cannot do without it.

Disadvantages of the heater in the VAZ-2107

The need to improve or improve the operation of the heating system may arise as a result of the following shortcomings:

Ineffective rear airflow. Due to design features, warm air is difficult to reach passengers sitting in the back. It will take time to effectively warm up the entire interior of the car.
There is a weak air flow from the left deflector device on the “sevens”.
The electric motor of the heating unit is too loud.
The faucet of the radiator device is also considered a weak point. With prolonged use, it leaks, which leads to a decrease in the volume of antifreeze in the system.

The most common problems

Thanks to its simple design, the heater of the 2107 VAZ model rarely breaks down. However, sometimes failures do happen. Most often this happens due to:

sour faucet;
clogged or cracked radiator;
breakage of the cable drive.

It is the first of the mentioned elements that causes the greatest problems. The trouble is that in the winter the VAZ stove is actively used, while in the summer, of course, it sits idle for 4-5 months. Because of this, the tap often becomes clogged with solid particles contained in the antifreeze and jams. With the arrival of cold weather, it can be very difficult to open it, which is why the cable breaks or the locking fitting itself breaks. The faulty unit must be replaced.

The period of inactivity is also negatively displayed on the radiator. Without coolant circulation, deposits form on the coolant walls and oxidative processes are activated. As a result, the heat exchanger tubes become clogged, and subsequently the efficiency of the furnace as a whole decreases.

For preventive purposes, the radiator must be regularly washed with special compounds. Blockages are removed mechanically.

Leaks are another problem that often occurs with heaters. They occur due to the destruction of the faucet or loss of tightness of the joints of the pipes and radiator. The first two breakdowns are eliminated by replacing the failed element, and the last – by soldering. Fortunately, the original radiators on VAZ classics are made of copper, and therefore can be easily repaired.

Sometimes the fan also breaks. Problems here arise due to:

motor burnout;
wire break in the circuit;
button failure.

Repair of heating radiator VAZ 2107

Often, repairing a VAZ 2107 stove involves replacing or repairing the heater radiator. Repair actions depend on the type and cause of the malfunction:

A clogged radiator can be flushed with water pressure. Scale on the walls of honeycombs can be removed using a special product that dissolves it.

A leak in a copper (brass) radiator can be soldered. Using a powerful soldering iron and solder, you can repair a hole or crack. Leaking aluminum radiators must be replaced.

Heater assembly VAZ 2107

The repair of the VAZ 2107 stove is completed by assembling the heater. They assemble it in the reverse order of disassembly. The work has a number of features:

rubber gaskets must be replaced with new ones and lubricated with silicone sealant;
before assembling the heater, it is necessary to attach the pipes and tap to the radiator;
Do not overtighten the nuts so as not to crush the gaskets;
before putting on the rubber hoses, the outer surface of the metal radiator pipes must be treated with sealant;
After the VAZ 2107 heater is assembled and connected, you must remember to add antifreeze to the system and check its tightness.

Important: repair of the VAZ 2107 stove must be carried out in conjunction with checking the serviceability of the engine cooling system components. This approach allows you to accurately determine the cause of the breakdown and reliably eliminate it.

If the electric motor of the heater (stove motor) of the VAZ-2107 does not work

The heater motor does not turn on at first, second or both speeds. We check fuse No. 1 in the mounting block, the tightness of the plugs and connectors. If it doesn’t help, we check everything according to this scheme. Most often, the switch fails; it happens that when assembling the stove, they forget to connect the plugs.

Connection diagram for the VAZ-2107 heater motor

Current path in the heater electric motor circuit: Terminal (terminal) “30” of the generator – pink wire – contact “1” of connector “Ш10” of the mounting block – current-carrying paths of the mounting block – contact “4” of connector “Ш1” of the mounting block – brown wire – contact “30/1” of the ignition switch – closed contacts inside the ignition switch – contact “15” of the ignition switch – blue wire – contact “1” of connector “Ш14” of the mounting block – fuse No. 1 – contact “4” of connector “Ш3” of the mounting block – yellow blue wire – contact “L” of the electric motor switch. For the first speed (low speed) – closed contacts of the switch – contact “V” of the electric motor switch – purple (red) wire – additional 1.5 Ohm resistor (installed inside the heater body) – plug connector – red wire – heater motor – black wire – car body - terminal “-“ of the battery or generator housing. For the second speed (high speed) - ... closed contacts of the switch - contact “H” of the electric motor switch - black-blue wire - plug connector - stove motor - ... Inside the motor housing, the red and black-blue wires are soldered together.

If the heater motor “whistles” - it makes a nasty loud sound, then this video is about the reasons

Dismantling the heating radiator VAZ 2107

To do the job you need a Phillips screwdriver and a set of wrenches (open-end and socket).

Sequence of operations:

loosen the heater hose clamps located in the engine compartment;
remove the hoses from the heater radiator pipes (this may result in a slight leak of antifreeze);
unscrew the screws securing the rubber seal;
remove the seal;
unscrew the radio panel;
disconnect the cable from the tap of the VAZ 2107 stove;
Using a screwdriver, remove the brackets on the fan casing;
lower the casing down;
remove the heater radiator.

Step-by-step instructions for replacing the radiator

What should I do to get the stove working again? First of all, replace or repair the radiator; to do this, follow these steps step by step:

Drain the coolant into a container.
Unscrew the 2 clamps located on the pipes of the old device from the engine compartment and remove the hoses.
Unscrew the rubber seal retainer and then remove it completely.
The interior of the VAZ-2107 will also have to work. Remove the panel where the radio is located, using a screwdriver or a 7mm wrench, unscrew the fastening element of the heater valve drive cable.
Don't put the screwdriver down; you'll still need it to remove the spring-shaped brackets. There are four of them, the parts are located on the casing of the ventilation equipment.
Slightly lower the cover downwards and then move it to the left.
The radiator can now be pulled out.
Proceed to inspect the old unit. Which product can not be changed? If there are no traces of leaks on the metal tubes, there is no corrosion. Corrosion is cleaned out, and leaking metal pipes are replaced. It happens that the heater tap lever is jammed, the point is that it no longer opens or there are problems with closing. When reinstalling radiator components, remember that good gaskets seal the fit of the parts to each other. Each gasket should be covered with silicone sealant; screw them securely, but without overtightening the fasteners.
Rubber hoses that carry coolant along the entire path are also subject to lubrication with sealant.
Assemble and mount the radiator exactly as indicated in the instructions, but in reverse order.
If necessary, add antifreeze.
All that remains is to turn on the ignition and check how tight the connection of the pipes with the hoses of the VAZ-2107 is.

What to do if the stove in the VAZ-2107 does not heat and the radiator is to blame is shown in the video:

Stove modernization

Very often, in parallel with the prevention of stove malfunctions and its settings, the driver modernizes the heating system for more efficient operation.

Most often, for these purposes, the standard fan and resistor are replaced with products from the figure eight. The new fan is larger in size, due to which a larger amount of warm air is supplied, and the vehicle interior warms up faster. The new fan fits into the standard seat with virtually no modifications. It is only necessary to cut off one of the aerodynamic ridges from the impeller. After such improvements, it will also be necessary to replace the standard fan button with a product from the figure eight.

Sometimes, for better airflow of the driver’s side windows, additional small fans are installed in the deflectors. Such improvements, combined with preventive maintenance, will ensure comfort and warmth in the cabin even in the coldest times.

How to identify the problem and fix it

There are several reasons why the furnace blows cold air or does not work at all. In this case, you must proceed as follows:

Check the faucet to see if it opens.
Is the cold air damper capable of closing?
With the car running, check the heater (heater radiator) for heating.

Radiator replacement

If the problem is in the radiator and it needs to be replaced, then proceed as follows:

Drain the liquid.
We unscrew the two clamps from the engine compartment, which are located on the radiator pipes. We remove the hoses.
Unscrew and remove the fasteners on the rubber seal.
We dismantle the radio panel and the cable fasteners on the heater valve drive. To do this job you will need a 7 key.
Next, use a screwdriver to remove 4 spring clips from the fan casing. The casing drops down and slides to the left, after which the radiator can be pulled out.
Now you can carefully examine the radiator, revive it or replace it with a new one. Assembly is carried out in the reverse order and does not involve any difficulties.

A broken radiator is a common cause of a non-functioning stove.

Restoring glass blowing

The stove that is installed on the VAZ-2107 has some design features, due to which the left pipe often does not blow the glass well enough. To put up with such an inconvenience in winter is difficult. Therefore, it is worth working to eliminate this problem. You must proceed according to the following scheme:

We remove the deflector from the pipe by prying one of its sides with a screwdriver.
The deflector body is held on the torpedo using small antennae. We put our hand inside and pull it out.
The 50mm fan from the computer must be placed in the center of the dismantled case and marked in the appropriate places.
In the plastic case, using a utility knife, hacksaw or sharp knife, cuts are made at the marks.
The plastic easily breaks off along the line of cuts and an opening is obtained into which the fan is installed. It should fit snugly in place.
We return the insides of the deflector to their place. The internal blades will not be able to rotate at full speed due to the changes made.

Other minor faults

Finding and fixing minor problems on your own is a handy skill for any car enthusiast.

After such actions it will be easy to determine the causes of the breakdown. And they can be as follows:

If the faucet is working properly, but the heater heats up only at high engine speeds and under such conditions begins to blow warm air, then the fault should be looked for in the pump or a coolant leak. To find a leak, you must carefully examine the required area of the cabin. If leaks are found, the hoses need to be replaced, tightened or new clamps installed. Do not neglect the cap on the expansion tank. Tightness is the main condition under which the heater can function normally.
Leaks can also occur due to rusting of the radiator, taps and other elements of the heating system. In this case, it is enough to simply replace the necessary part and enjoy a comfortable ride.
The tightness can be checked in another simple way. Turn on the engine and wait 10 minutes. During this time, the expansion tank should warm up. If this does not happen, then we can talk about the lack of pressure that is necessary to supply antifreeze or antifreeze to the heater stove.
If you notice that the car gets very hot when standing in a traffic jam, then you can talk about the lack of necessary pressure.
The stove can become clogged with various debris and become coated from the inside with oxides of various substances. In this case, it is necessary to clean out the debris and clean the system.

The car owner must be prepared for minor problems and be able to quickly fix them. For example, with the onset of winter, many VAZ-2107 owners’ stoves do not heat up and it is not always convenient to run to specialists with this problem.

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.

Reassembly

In fact, reassembling the unit only involves following the opposite sequence of operations. By disassembling the stove, you have the opportunity to simultaneously inspect other elements of your car to make sure they are working.

The only nuance that you should pay attention to when reassembling is the type of stove. If you have an old-style heater, then it is important to pay attention to a couple of issues.

When the plastic housing is mounted in place, make sure that the pedal fits neatly into the groove intended for it.
Check how tightly all the nodes fit into their seats. Otherwise, unpleasant consequences may arise that will force you to dismantle the entire assembly again. And this, as you already understand, is not an easy process.

That's it, now all that remains is to return the coolant back into the system and tighten the plug securely. Test your vehicle in a garage before driving it on public roads.

Reasons for replacing the stove on a VAZ 2107

Many car problems occur with the arrival of cold weather, and this especially applies to cars from the domestic auto industry. One of the main problems is the inefficient operation of the heating system, as a result of which the windshield and side windows are poorly heated. VAZ 2107 owners quite often encounter a situation where in winter the car’s interior simply does not warm up. In this case, there is no need to talk about any comfort for passengers and the driver. To understand the reasons and eliminate a possible malfunction, you first need to understand the design of the “seven” heater.

The main elements of the VAZ 2107 stove are:

radiator;
tap;
fan;
control cables;
air ducts

Parts of the heater and body ventilation of the VAZ 2107: 1 — lever of the air distribution cover; 2 — bracket for control levers; 3 — handles of heater control levers; 4 — air duct for heating the side window; 5 - flexible rods; 6 - heating air duct

As the vehicle is used, certain malfunctions may occur with the stove, which reduce the efficiency of the unit or make its operation completely impossible. There are not many signs of major problems and they boil down to the following:

heater leak;
lack of heat or weak air heating.

As for the service life of the stove, it is inappropriate to give any figures. It all depends on the quality of the parts, the coolant used, as well as the frequency of operation of the car.

Radiator leak

If the heat exchanger is leaking, it won’t be difficult to detect. Coolant in the form of a puddle will be under the feet of the driver or passengers. However, you should not rush to conclusions and buy a new radiator to replace it. The leak may be associated not only with it, but also with leaky pipes or faucets. To do this, you need to get close to these elements and carefully examine them with good lighting. Having made sure that the problem is not in them, only the radiator remains. By the way, sometimes when a leak appears while the heater fan is running, the windshield fogs up and a characteristic smell of antifreeze appears. Having found out that the reason lies in the heat exchanger, it will need to be removed and then repaired or replaced with a new one.

If a radiator leaks, the part needs to be repaired or replaced.

The stove doesn't heat

If the engine is warm, the heater valve is open, but cold air is coming from the heating system, then most likely the radiator is clogged or there is a low level of antifreeze in the cooling system. To check the coolant level, just look at the level in the expansion tank or unscrew the main radiator cap with the engine off. If there are no problems with the level, then you need to deal with the heat exchanger, you may have to flush it or the entire cooling system. To avoid possible clogging of the heater radiator, you should not add various additives that eliminate small leaks. Such products can easily clog the stove tubes.

Cold air flow from the heating system can also be caused by air in the system. In this case, you will need to remove the air plug and add coolant.

Airing is the appearance of an air lock in the cooling system during repair work or when replacing the coolant.

The heater tap may fail over time as a result of scale formation.

In addition, the problem is possible with the tap itself, which over time can become clogged or scale may form if water is used instead of antifreeze. If there is a problem with the tap, the part is disassembled and cleaned or simply replaced. Another, although rare, but possible cause of a cold stove, may be pump failure. In this case, the engine warms up, but the pipes going to the heater radiator remain cold. In this case, the water pump must be repaired immediately. Warm air may also not enter the cabin due to problems with the heater fan. The problem may be with the motor itself or its power circuit, for example, if a fuse blows.

This is why the car heater doesn't heat up

Hello everyone, dear friends, today we will look at the main reasons why the heater in a car does not heat up. Imagine, you go out in the morning, you think, I’ll turn on the heater now, and I’ll drive in comfort, but suddenly you turn it on, and the heater doesn’t work and it’s very unpleasant, most likely, you just won’t drive such a car, why do you need to freeze, you’ll think.

It also happens that the stove seems to be working, but it blows cold air, which is also very unpleasant. Do not rush to go straight to a car service; you may be able to eliminate the cause yourself. Well, if you are not sure that you can fix the malfunction of the stove, then it is better to take the car to a car service center. But so that you understand why the stove in the car does not work, let's look at the reasons for this malfunction.

Dear friends. Something in the car began to freeze. Soon autumn will be replaced by winter, and if I don’t fix the stove, I’ll die. In order for us to fix the stove instantly, we need to find and solve the reason. We start our search with the simplest one, with a cabin filter like this. If it is dirty or in the foliage, we change it to a new one, it will blow like an animal.

Next we look at the fan, at the heater fan guys. If it doesn’t turn at all, then it will be very cold in the cabin

You need to check the fuse and replace it if necessary.

Next, we check the fluid level that is in the expansion tank. And if there is no level at all in the tank, then we make sure that there is a level.

Now we check the airing of the system, and if there is any, we can safely correct it

We also check the expansion cap and, if necessary, replace it

We check the damper regulators and also look at the switching of the damper position. If necessary, we correct the defect and eliminate the malfunction.

If the above reasons are not the same, the problem is most likely in the thermostat. If you need to replace it in the store, you will have to buy it

Faulty pump, the next reason, perhaps it is simply jammed. The cylinder head gasket, if it is punctured, the car will not be happy.

The most unpleasant stove failure, as you understand, is the stove radiator. To replace this radiator, you need to put in a lot of effort

I wish everyone that everyone’s stoves are warm and you don’t get a cold. Well, that’s it, we’ve looked at the main reasons for poor performance of the stove in a car. Bye everyone.

Repair and replacement of individual heating system elements

In addition to the radiator, the heating system includes a fan with an electric motor, a tap and a control unit.

Drivers who have been driving Zhiguli cars for many years often say that the VAZ 2107’s stove sometimes does not heat well. The most common cause of malfunctions in a system such as the VAZ 2107 stove is a leak in the radiator, as well as in pipes, taps and connections located directly between them. To this can be added switch failures for electric fan modes, damage to the device wires or oxidation of their components.

Fan motor

The electric motor of the stove is considered one of the weakest points of the VAZ 2107. This is due to the material of the bushings on which the rotor rotates. When these bushings wear out, the fan operation is accompanied by a characteristic whistle. This happens after two to three years of using the car. The electric motor can be brought back into working condition by cleaning and lubricating. However, after a short time the whistle from the stove fan will appear again. In such cases, experts recommend replacing the standard electric motor with a new one - a bearing one . As a result, the whistle will disappear, and the reliability of the unit will increase. The replacement process is associated with certain difficulties, since the electric motor is located in a rather inaccessible place. Nevertheless, after installation, the bearing motor is guaranteed to work for several years.

The factory electric motor of the VAZ 2107 heater fan is usually replaced with a bearing one

Heater valve

The heater valve is replaced when it jams, leaks, or in other cases when repair is impossible. Experts recommend installing a ceramic faucet in this case.

The metal heater valve usually opens in the fall and closes in the spring. During periods of inactivity, it can sour, become covered with scale and simply fail. The result can be extremely unpleasant for the car owner. These disadvantages do not exist with a ceramic faucet. There is practically no scale accumulation on ceramics, and it is not subject to corrosion. As a result, even after a long period of inactivity, the heater valve will be in working order.

The standard faucet of the VAZ 2107 stove is often replaced with a ceramic one

Control block

The heating system is controlled from the interior of the VAZ 2107 by several levers on the instrument panel, connected to the controlled elements by a flexible rod (steel wire). Using these levers you can:

adjust the degree of opening of the air dampers;
open and close the heater tap;
distribute air flows between the windshield and side windows;
take air from the engine compartment.

Each of the control unit levers is responsible for the operation of a specific unit.

In addition, there is also a lower damper (air distribution cover), which is controlled by a special lever located under the instrument panel on the driver’s side.

Sources

https://bumper.guru/klassicheskie-modeli-vaz/sistema-ohdazhdeniya/pechka-vaz-2107.html
https://legkovmeste.ru/avto/zamena-radiatora-pechki-vaz-2107.html
https://avtozam.com/vaz/2107/dorabotka-pechki-vaz2107/
https://ladaprofi.ru/vaz-2107/kakovo-ustrojstvo-pechki-na-vaz-2107.html
https://semerkavaz.ru/raznoe/pechka-vaz-2107/
https://VazNeTaz.ru/ne-greet-pechka-vaz-2107
https://remam.ru/vozdsys/shema-i-ustrojstvo-pechki-vaz-2107.html
https://remam.ru/vozdsys/vaz-2107-ne-greet-pechka.html
https://autoclub.su/kak-snyat-pechku-na-vaz-2107/

The VAZ-2101 stove does not heat at all

If the fan does not start when you turn on the “warm” mode (it is quite noisy, so there will be no problems diagnosing this malfunction), then the reason lies either in the electrical equipment that powers the electric motor, or in the fan itself.
First of all, we check the integrity of fuse No. 2 - it is responsible for the operation of the heater motor (as well as the wipers and windshield washer). As you understand, you don’t even need to go into the fuse box to do this - if the windshield wipers don’t work either, then the problem is a blown fuse. If after replacement the situation repeats, you should look for the cause (most likely, there is a short circuit in the circuit, most often it breaks through the armature winding to ground).

If the fuse is intact and the fan motor shows no signs of life, you can use a tester to check the wiring from the fuse box to the electric motor for breaks, oxidation or loose contacts.

If everything is in order here, it is obvious that the motor itself is not working. The culprits of its breakdown may be wear of the electric motor brushes, wear (critical oxidation) of the commutator, or a break in the winding. If cleaning/replacing the commutator or brushes does not help, change the fan motor.

Many people prefer to install a fan from the six instead of the original motor - it is more powerful and provides a larger volume of air pumped into the cabin.

The heater on the classic does not work. VAZ 2101-07. We are looking for the reason.

Heater VAZ 2107: design, malfunctions and repairs, modification of the heater