Stove VAZ 2107 - design and repair

Every fall, a good car enthusiast thinks about preparing his car for winter. Particular care should be taken when preparing the VAZ 2107 stove, which should heat the car well. The heating system fails for various reasons, and if you don’t pay attention to it in the summer, then in the winter, with severe frosts, all the windows will freeze and fog up from the inside, and driving such a car will become dangerous, and maybe even completely impossible.

It is necessary to know the structure of the stove well so that in winter you do not have any unpleasant surprises with heating the interior.

Stove design

The stove consists of the following parts:

Heater, a stove radiator is installed in it (indicated by the number 5 in the figure), it heats the air penetrating from outside;
The stove fan, or motor (indicated by the number 14 in the figure), it pumps a flow of warm air into the cabin, it is mounted in a special casing (indicated by the number 16 in the figure) on elastic cushions that dampen its vibration;
The stove control system is a fan button (indicated by the number 18 in the figure), three control knobs for heating modes - blowing onto the windows, taking air from the cabin or from the street, and opening and closing the stove tap.

1, 9 – air ducts for heating the side windows on the left and right; 2 — air duct for heating the windshield; 3 — radiator casing; 4 — air intake cover; 5 — heater radiator; 6 — radiator valve; 7, 8 radiator hoses for supplying and discharging hot fluid from the cooling system; 10 — rotary deflectors; 11 — air duct damper; 12 — air distribution cover; 13 — fan guide casing; 15 — lever of the air distribution cover; 17 — control rods; 19 - central air duct.

The heating system works in the following order:

Air for heating comes from outside, through air intakes on the hood.
Under the hood there is a special box, insulated with a rubber seal, for air flow.
From it the air flow is directed to the stove.
Next, the air is heated by a radiator, which is fed with antifreeze and antifreeze. The degree of heating is regulated by the heater tap. The faucet is controlled by a flexible rod using a control lever.
At high vehicle speeds, air can enter the passenger compartment without the fan being turned on. Therefore, at high speed you can use the stove without additional load on the car’s electrical network. The interior heater is turned on by a fan switch that has three positions - neutral and two speeds: low and high. Speeds are provided by a resistor; it increases the resistance of the circuit and reduces the speed of the fan.
The fan accelerates the warm air flow through the air ducts to the sides, onto the side windows for good visibility of the rear-view mirrors, and into the grille deflectors, which can change the direction of the air flow for better airflow. There is also a flow of warm air through the air duct to blow on the windshield.

Above in the figure, blue shows the circulation diagram of cold air flows, and orange shows the movement diagram of warm air flows. Main parts of the heating system:

1 — air distribution cover; 2 – fan electric motor; 3 – fan, impeller housing; 4 – heater tap; 15 – radiator.

The stove is controlled:

Changing the position of the lower cover of the fan casing using a lever (down-up);
Changing the position of the control unit levers (heating flaps of the side windows and windshield, air supply covers).

What breakdowns most often occur in the heating system?

Leaking radiator tap, pipes, radiator housing;
Malfunction of electrical equipment (fuse, mode switch, oxidation of wires, motor). The fan fuse is located in the mounting fuse block numbered F1 with a rating of 10A; below is a diagram of the mounting block.

Replacing the stove faucet

On a VAZ 2107 car, sometimes the faucet may leak or even become sour. They have to be used intensively and therefore often fail. Before you start replacing the faucet, purchase a set of gaskets for it. The tap is changed when the engine has cooled down.

Replacement sequence:

Loosen the clamp of the inlet pipe (lower) and remove it from the tap;
Use the lower lever in the control unit to close the dampers;
Remove the glove compartment;
We dismantle the air duct behind the glove compartment - to do this, disconnect it from the side deflector and remove it from the heater housing. Now, using a 7 key, loosen the crane rod and remove it.

Using a 10mm wrench, unscrew the valve from the radiator;

How to turn on the stove

The stove on the VAZ 2107 has: in fact, a toggle switch for the rotation speed of the stove fan, and three sliders - we’ll dwell on them in a little more detail. Upper: position all the way to the right - fully open the stove tap (maximum temperature); Middle: to the right all the way - air intake from the street, to the left - from the cabin. As a rule, it heats up faster when taking air from the street. Lower: extreme left position – heated side windows, right – heated windshield.

With this position of the sliders it will be warm.

If the stove shows no signs of life, it would be a good idea to check the fuses - there is an electrical diagram in the book for the car. If this is too difficult for you, you can go to an auto electrician.

Can the stove break?

Nothing lasts forever, and the stove on a VAZ 2107 can also fail. Let's briefly consider the main causes of breakdowns:

- on a new car:

1 – Electrical fault: fuses, heater motor, switch fault. 2 – Air lock (occurs when replacing coolant).

- on an old car:

There are a few more reasons here. With an old car, the troubles described above and several other problems can occur.

1 – The stove radiator is clogged (the honeycomb is clogged). 2 – Thermostat malfunction. 3 – Malfunction of the liquid supply valve.

How to make the stove heat in a VAZ: Video

A heating system that uses the heat of the coolant is responsible for heating the interior of the VAZ 2107. This scheme, recognized as optimal for cars with internal combustion engines, has been used in cars since the mid-20th century.

Like any car component, the VAZ 2107 stove may stop working. In winter, such a breakdown makes the car impossible to operate: the windows sweat or become covered with frost, which impairs visibility. For effective repairs, you need to have a good knowledge of the interior heating system.

Design and operation of the VAZ 2107 heating system

The system includes the following components:

Heater VAZ 2107, whose task is to heat the air. The main element of the heater is the radiator, through which coolant circulates.
A fan that directs heated air into the cabin. It is attached to the casing using elastic pads that dampen vibration.
Heater control system, including a fan button, handles and dampers for the heating mode control system.

The heating system works like this:

Through the grilles on the hood, air enters the air supply box located in the engine compartment near the windshield.

In the event of rain or downpour, the water is separated from the air and flows into the holes in the box. This allows you to use the stove in any weather, but until the radiator heats up, the air entering the cabin during rain will be damp.

The air flow is directed to the VAZ 2107 heater and heats up as it passes through the radiator. Heating is regulated using a tap, which regulates the amount of coolant passing through. The crane is controlled by a flexible rod attached to the control lever.

While driving, the air flow enters the engine compartment and the air independently enters the heater. When stopping or at low speed, an electric fan is used, controlled by a switch that has three positions: “off”, “full speed” and “low speed”. Reduced speed is achieved by turning on the electric motor through a resistor, which reduces the voltage on the motor winding.

After the radiator, the air enters the air ducts and exits through deflectors, which allow you to change the direction of flow. Warm air can be directed onto the windshield and side windows, under the feet of the driver and front passenger.

Control elements of the air flow from the VAZ 2107 stove:

Fan air distribution cover that regulates air flow.

Levers and handles that change the position of the air supply covers and dampers that regulate airflow.

Before repairing the VAZ 2107 stove, it is necessary to understand the causes of the malfunction.

When is it necessary to change?

The car heater valve is designed to regulate the supply of coolant. If it is open, the coolant enters the radiator in a heated state and heats the air coming from outside, circulating thanks to the fan. The heated air serves to heat the interior in winter. In the summer, the tap shuts off the flow of coolant into the radiator, and it goes bypassing the stove, so it does not affect the microclimate of the cabin.

Heater valve VAZ 2107

Replacing the heater tap is necessary if it becomes jammed. This occurs due to oxidation of the locking mechanism, as well as contaminants that are deposited on the internal walls.

Often the stove faucet has to be replaced if it begins to leak, which is a consequence of depressurization of its body. In this case, the coolant level in the expansion tank decreases, a wet spot appears on the floor under the front passenger’s feet, which is formed due to a leak, and a specific smell of antifreeze or antifreeze appears.

Basically, the body of the heater valves cannot be disassembled, so their repair is impossible. If a malfunction is detected, the part must be replaced (video author: Jena Pon).

Malfunctions of the VAZ 2107 stove and how to eliminate them

If the VAZ 2107 stove does not heat up and when the heater is on, the air leaving the deflectors remains cold, the reasons may be as follows:

Airing the cooling system. This can happen when replacing antifreeze or repairing cooling system components. To restore heating, you need to remove the air plug.
The heater valve in the open position continues to shut off the line. The reason for this is a clogged faucet or the formation of scale in it due to the use of water in the system instead of antifreeze. To restore the heater's functionality, the tap must be removed and then cleaned or replaced with a new one.
The stove remains cold when the tap is open. The cause of this phenomenon may be a non-working pump. This breakdown quickly makes itself known through rapid overheating of the engine; it is impossible not to notice it. If the engine is warmed up to operating temperature, and the pipes leading to the VAZ 2107 heater remain cold, the pump needs to be repaired. One of the reasons why the pump will not work is a slipping or broken alternator belt.
The air is cold and the supply hose is hot. This is a common problem resulting from clogged radiator honeycombs. They can become clogged due to scale build-up, oil in the antifreeze, or the use of “leak stop additives.” In this case, the VAZ 2107 stove must be dismantled and washed.
The radiator pipes are hot and the air is cold. This occurs when a baffle in the radiator moves and creates a straight path between the inlet and drain pipes. You can restore functionality by replacing the radiator.

Another type of breakdown is an antifreeze leak. This manifests itself in the appearance of condensation on the windows or leakage of antifreeze into the passenger compartment under the feet of the passenger and driver. The reasons here are:

Antifreeze is leaking through the heater valve. In this case, it can be replaced without removing the radiator.
The leak occurs through a burst pipe. The solution is to replace the pipe with a new one.
The heater radiator is leaking. In this case, repairing the VAZ 2107 stove involves soldering or replacing the radiator.

Reasons for decreased performance

In addition to obvious malfunctions due to which the stove does not work or functions incorrectly, there are other problems with the heating system of the VAZ-2107 interior. The main one is a decrease in stove performance.

If the stove heats poorly, then the reason lies in:

Malfunctions of the power plant cooling system (reduced pump performance, stuck thermostat).
Radiator clogged.
Formation of an air lock in the heater radiator.
The air intake damper seal is worn out.

To find the cause of decreased performance, start by checking the heating of the heater radiator. To do this, heat the engine to operating temperature, fully open the antifreeze supply valve to the stove and hand check the degree of heating of the supply pipe before and after the valve and the radiator itself. If the pipeline is hot before the tap, but not after it, the tap is jammed. If the radiator does not warm up, the reason lies in severe clogging of the heat exchanger or a plug in it. If the pipeline does not warm up even to the tap, inspect the cooling system.

If the radiator warms up well, but it is noted that the stove heats worse, then check the functionality of the air intake damper and the condition of its seal. It wouldn’t hurt to check the stove body and air ducts for leaks and cracks.

To ensure that the VAZ-2107 heater heats well, before the winter period check the functionality of the tap, replace the antifreeze (with flushing the system), inspect the control mechanism and the functionality of the dampers.

Dismantling the heating radiator VAZ 2107

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

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.

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.

Important: to eliminate a leak in the heater radiator or engine cooling system, you should not use products added to antifreeze - they can cause clogging of the VAZ 2107 radiator honeycomb.

An easy way to upgrade

The radiator on the VAZ-2107 gives off enough heat, so it should not be changed. The easiest way to tune is as follows:

Replacement of standard model fan motor. It needs to be changed to the one used in the VAZ-2109, with more power and speed. It is larger in size, therefore, you will need to remove the comb that directs the air flow to the legs.
Make a 7 mm hole in the impeller for the motor shaft. This will allow you to do without replacing it.
From the VAZ-2109 you will need a resistor and a switch. These parts also need to be changed.

Pay attention to the last point, if you do not replace the resistor and switch, then all other actions will be in vain, since the VAZ-2107 switch operates at a lower current. Working with a powerful engine from the “nine” will melt it. If you leave the resistance from the “seven”, it will not allow the motor to work at full power.

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.

Replacing the heating valve on a VAZ 2107

Having discovered a leaking faucet, the owner of the “seven” will be forced to replace it. This device cannot be repaired, since it is not possible to find spare parts for the VAZ membrane valve on sale (and besides, it is very difficult to disassemble the body of the standard membrane valve on the “seven” without breaking it). So there is only one option left: replacing the part. But before we start, let's decide on the tools. Here's what we need:

set of spanners;
pliers;
crosshead screwdriver;
new fuel valve for VAZ 2107 (preferably ceramic).

Sequence of work

First of all, you need to turn off the engine of the VAZ 2107 and cool it well. This usually takes 40 minutes. Without this preparatory operation, any touch to the heating tap can lead to serious burns to your hands.

Now the interior of the car opens. The screws holding the storage compartment and glove compartment are unscrewed. The glove compartment is carefully removed from the niche, allowing access to the fuel tap from the passenger compartment.
The hose through which antifreeze enters the heating radiator is removed from the tap pipe. To do this, the clamp that holds the pipe is loosened with a screwdriver. After this, the hose is pulled off the pipe manually.

Video: replacing the heater tap on the “seven”

Tuning the VAZ 2107 stove

You can improve the VAZ 2107 heater by installing an additional fan to increase the air flow to the windows. Another common type of tuning of the VAZ 2107 stove is replacing the fan mode switch with a button.

Before the onset of cold weather, every responsible driver carries out a preventive inspection of the car and eliminates possible malfunctions. Most often, oil and antifreeze are changed regularly, and the car tires are changed to winter ones. The stove, which is one of the main units of the car, which provides comfort for the driver and passengers in the cold season, also requires special attention.

This article will discuss the design of the VAZ-2107 stove and its correct configuration for high-quality heating of the interior.

How to modify and modernize the stove with your own hands?

You can improve the operation of the heating system on the “seven” in the following ways:

redo side window ventilation;
modernize the damper;
modify the foot airflow system to increase its efficiency;
improve the operation of the rear cabin heating system;
modify the thermostat;
improve the functioning of the steam exhaust line;
install an additional water pump.

User Egor Panther spoke about options for upgrading the heating system in VAZ 2107 cars.

Improved side ventilation

The side ventilation system needs to be modified after purchasing an additional fan. The device is mounted in the left line, which will allow forced air flow to the deflector.

The tuning procedure looks like this:

At the first stage, the deflector device is dismantled from the main line. To perform this task you need to use a screwdriver. The deflector in the cabin is pryed up and removed; it must be pulled forward. Similar actions are performed on the other side of the stove.
Dismantling the device is carried out carefully so as not to leave any traces of damage on the center console.
If the deflector is removed, it is necessary to remove the holding device from the dashboard. This element is mounted in the center console using special antennae. The essence of this modernization is that a classic computer fan is installed to force air flow into the heating system.
To install the ventilation device, the element must first be fitted to the deflector body. After applying it to the plastic with a marker or pencil, you need to apply markings. Using a utility knife, a cut is made in the plastic on the deflector.
If the dimensions are marked accurately, the ventilation device will be tightly installed in the housing. This is important, since such installation will prevent the part from loosening while driving.
After completing the installation of the fan, you need to make sure that its blades rotate normally and nothing interferes with them. If problems arise, the device is adjusted. If necessary, the blades can be trimmed a little.
To ensure efficient air flow and no backdraft, the entire structure must be sealed. Therefore, using sealant or the remains of plastic that appeared after cutting the deflector, the cracks are clogged.
If all steps are completed, the ventilation device is installed in the main line area, and then mounted on the body of the deflector element.
After completing all the installation steps, you need to work with the electrical component. It is recommended to connect the fan electrical circuit to the conductor where the current appears when the ignition is activated. This option is more convenient. It is possible to connect the device to the heating unit control cable.

Damper modernization

Modification of the VAZ 2107 stove, which consists of upgrading the lower damper of the system, is the easiest option to implement. If all actions are performed correctly, the device will not open or close randomly when the car drives over bumps. This will ensure efficient and equal airflow on both glasses.

The upgrade procedure is carried out as follows:

It is necessary to visually evaluate the housing of the heating unit. In its corner there is a hole of the required diameter to carry out the work. If it is not there, then it is drilled. For this, a drill with a diameter of 6 mm is used.
A bolt is installed into the hole made from the inside. The valve itself closes.
After this, using the same drill, a hole is drilled directly into the handle of the device. It is necessary to drill so that the hole is located at the level of the bolt installed earlier. In this case, the length of the screw must be such that when lifting the damper, the element can freely fit into the hole made.
If everything is done correctly, the bolt is tightened with a nut. It is recommended to use a black part, then it will be difficult to see.

User Nail Poroshin spoke about the features of modifying the air damper thrust.

Rear seat heating system upgrade

To modernize the rear seat heating system, you will need to install an additional “snail”, which can be used from the VAZ 2108:

First you need to make a housing to fix the “snail”. To perform this task, you need to cut plexiglass.
Using a regular hairdryer, you need to carefully make bends on the glass so that it turns out as shown in the photo.
Then, using a hair dryer, you need to carefully change the shape of the case. It is necessary to act carefully, otherwise the “snail” may not fit into the landing site.
When completing the task, you can remove the device plug using a utility knife. This will reduce the dimensions of the part by approximately 3 cm.
Then the side walls of the structure are manufactured. For this you can use duralumin or other similar material. The wall thickness should be 1.5 mm.
The next step is to remove all the cracks. To do this, the joints of the device must be sealed using adhesive-sealant or other means.
Then you need to work with the channels through which air will flow to the blower openings. It is recommended to make these elements collapsible. For manufacturing it is desirable to use a similar material.
In order to reduce the amount of resistance and remove turbulence, the turns of the air channels must be smooth. They can be made from duralumin.
At the next stage, we need to build slots that will be used to warm the feet. We are talking about front airflow - for the driver and passenger. The slots must be equipped with shutters. You can additionally install a variable resistor device, which will be used to regulate the speed of the electric motor. This element can be used instead of a resistor designed to change the brightness of the backlight.
The main stage in this modernization is the construction of a system for effectively heating the feet of passengers sitting in the rear. To do this, it is necessary to additionally install several longer pipes. The radiator device is quite powerful and its power will be enough to supply air flow back. All connecting points of lines and blowers are sealed to prevent leakage of warm air flow.

The design and principle of operation of the VAZ-2107 stove

In order to carry out preventive maintenance of the heating system of the vehicle interior and correctly configure its operation, you must first understand the structure of the VAZ-2107 stove.

The stove in the seven is located in the cabin and is attached to the partition of the engine compartment with four fasteners. A rubber seal is installed between the motor and the stove. Air arrives to the stove through special holes in the hood. At the rear of the heater in the engine compartment there is an air supply box. The air passes through the radiator, where it is heated, and enters the car either under the pressure of cold air from the street at high speeds of the car, or under the action of a fan, which creates air movement under pressure. The fan has three operating speeds: neutral, low and high. The fan speed switch is located on the dashboard of the car.

The heater radiator uses liquid from the car's cooling system to function. The amount of hot liquid that enters the radiator can be adjusted using the tap. It is located near the floor of the vehicle on the passenger side and comes from the flexible rod control lever. The control lever is located on the dashboard of the vehicle. The top heater switch controls the heater tap. In the extreme right position, the switch fully opens the tap, allowing the maximum possible amount of coolant to enter the radiator. In the switch position on the left, the tap is closed, antifreeze does not enter the radiator, and the stove remains cold.

The heater motor is located under the radiator. A resistor is included in the electrical system of the motor, which makes it possible to switch fan speeds.

Under the action of the fan, warm air flows through the tubes towards the side windows, to the windshield and to the deflectors. Using deflector grilles, you can change the air supply route for directional airflow. Hot air is controlled by opening or closing the stove damper, the lid of which is adjusted by flexible rod levers. The middle lever is responsible for closing the air supply hatch. In the extreme right position of the switch, the maximum possible amount of air from the street enters the car. In the extreme left position and the lid is tightly closed, air does not enter the cabin.

Diagnostics of malfunctions of the heater valve

Like all other elements, the crane is also susceptible to malfunctions. Perhaps the most common failure is wear of the valve gaskets and seals, which is accompanied by a leak of coolant. Its main danger is the loss of the cooling component, which can occur in small quantities. Over time, the antifreeze leaves and the engine begins to overheat.

It's quite easy to find out about this

First of all, pay attention to the condition of the glass; if they begin to become covered with fumes in the form of a sticky coolant component, then this is a clear sign that antifreeze has entered the interior of the car. The second sign is a puddle of antifreeze that forms under the passenger seat rug. In this case, first check the tightness of the crane and tighten the bolts

If this does not give a positive result, and antifreeze still leaks from the tap, then the element will need to be replaced. Try to do this as quickly as possible, since any antifreeze is highly toxic, which is very dangerous to health

In this case, first check the tightness of the crane and tighten the bolts. If this does not give a positive result, and antifreeze still leaks from the tap, then the element will need to be replaced. Try to do this as quickly as possible, since any antifreeze is highly toxic, which is very dangerous to health.

The main problem in diagnostics occurs when the car is operated on water. The fact is that water has virtually no odor, and its evaporation does not contain any visible signs. In this case, it is necessary to check the water level in the expansion tank as often as possible.

Another malfunction is a cable that has come off the heater lever. It happens that the crane does not react in any way to changes in the position of the control lever. At the same time, the lever becomes less tight, and the fan only drives cold air. In this case, the cable is put in place, adjusted and fixed.

The last problem with the faucet is its clogging

Determining it is also quite simple, but it can easily be confused with a clogged radiator itself, so pay special attention to how tight the locking and unlocking is. The tap is subject to both replacement and simple cleaning

Common stove malfunctions and options for eliminating them

Before the onset of cold weather, it is imperative to check the functioning of the main elements of the VAZ-2107 heater.

Most often, the following malfunctions occur in the interior heating system of the seven:

Poor quality connection of pipes and air supply pipes.
Radiator and heater tap leaking.
Malfunction of the electrical equipment of the stove - oxidation of the wires, failure of the motor or fuse of the stove. The fuse is located in the block under the hood of the car. The fuse box is located on the partition between the passenger compartment and the engine compartment on the passenger side.

Even a novice driver can fix such malfunctions in the heating system. More serious breakdowns may lead to the need to purchase a new stove.

First you need to conduct a visual inspection of the heating system parts. To do this, you need to disassemble the stove and clean it of particles of debris and dust collected over the summer.

One of the most common problems in the heating system of the VAZ-2107 is poor-quality sealing of the stove air ducts. This problem can be eliminated by treating the cracks in the plastic elements of the heater housing with silicone. Also, the holes near the pipes must be sealed with rags. Eliminating the holes will reduce the loss of warm air and will result in faster heating of the interior.

The next step is to check the heater and radiator valves for leaks. This is the main headache for owners of domestic cars. If the stove faucet or pipes are leaking, they must be replaced with new products. At the same time, the sealing butt gaskets are also changed. If the radiator itself is leaking, then there are two options for solving the problem. Most often, sevens have an old-style copper radiator installed. A copper radiator can be soldered and thus extend its life. If the seven is equipped with an aluminum radiator, then it cannot be repaired and must be replaced with a new product.

If, after carrying out all the preventive manipulations, cold air enters the cabin, the reason may be a clogged radiator, then it will need a thorough cleaning. Experts recommend carrying out preventive radiator flushing at least once a year. At the same time, all hoses and pipes are washed.

For preventive purposes, it is important to inspect the stove wiring for oxidation or poor contact insulation in order to avoid short circuits, burnout of the motor and heating system fuse. If the stove is working, then a visual inspection and troubleshooting is sufficient. Otherwise, it is necessary to check the functioning of the electrical circuit elements using a tester.

Such simple manipulations will save you from unpleasant situations with the heating system during the cold seasons.

The heater damper does not work on a VAZ 2110: reasons and self-repair

It cannot be said that the build quality of AvtoVAZ cars is at an extremely sad and low level. But these cars cannot be called exemplary either. One way or another, if you properly care for your car, monitor it, and carry out periodic preventive maintenance, expensive repairs will be reduced to a minimum.

A car is a means of transportation that has a certain level of comfort. The stove is partially responsible for the comfort of the driver and his passengers in the VAZ 2110 . Various problems occur in its design, and the heater damper on the VAZ 2110 is no exception. The role of this unit is to maintain the temperature specified by the user.

Functionality check

If you do not want to spend a lot of money on repairing and replacing the device, you need to first check whether such manipulations are required. To do this, you can try to return the displaced damper to its rightful place.

Turn on the ignition;
Switch the regulator to different positions;
Manually move the flap;
This way it can be returned to its original position.

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.

The main problems of the stove

You can solve the problem of poor heating only if you know its weak points. Most often, the need to improve a unit arises for the following reasons:

Leaking heating system faucet.
Poor quality air supply.
Low level of air flow from the deflector.
Loud noise when the heating system is operating.

Thus, you can increase the temperature in the cabin in winter if you replace the faucet and deflector, troubleshoot the radiator, and upgrade the fan. These modifications are not difficult to do with your own hands, but they will significantly improve the quality of the heating system.

Let's sum it up

Timely diagnostics, preventive cleaning and inspection of elements of the vehicle’s heating system is a guarantee of high-quality operation of the stove. Experts recommend checking the heating system on the VAZ-2107 at least twice a year - in autumn and spring. Any driver can handle preventive cleaning and adjustments of the stove on his own; to do this, you just need to understand the structure of the heating and ventilation system of the cabin and the principle of its operation. The easiest way to do this is to always have a visual instruction manual for your car nearby.

Don’t put off any further work to improve the functioning of your car’s heating system. Proper care will ensure uninterrupted operation of the heater and a comfortable temperature in the interior at any time of the year.

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/

Causes of failure	Characteristic
Micromotor gearbox jammed	This element is responsible for controlling the damper drive
Problem in the control unit	It should be checked in order to understand whether the micromotor gearbox, the damper, or the control unit is at fault
The plastic dampers have moved from their seat and are jammed, making it impossible to control the stove.	This is typical for the old-style VAZ 2110 heater damper, when plastic was still used for this component.

Stove VAZ-2107 - design, operation, main malfunctions