Replacing the heater valve for VAZ 21102. heater for VAZ 2110; eleven; 12. device and principle of operation

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. You cannot do without a stove or a faulty interior heater radiator on a VAZ 2110, given our cold climate. If in the summer a non-working stove may not bother you, then with the onset of the cold season it often turns out that the stove on the VAZ-2110 is blowing cold air. Today we will try to talk in great detail about the design, repair and replacement of the heater on the “ten”. For clarity, we will supplement the text with photographs and videos.

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

Another important difference is the electronic control of climate processes in the cabin. For this purpose, 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 “tens” of different years of production varies. Since 1996, 4 types of SAUO controller have been produced. It is worth taking this into account when purchasing a unit as a spare part. It is this device that controls the temperature in the cabin and the operation of the fan. You can set the temperature from 16 to 28 degrees.

But how does this miracle device work? On the ceiling of the “tens” cabin there is a temperature sensor or a 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 micro gearmotor (MMR), 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 gives a new signal, the micro-gear motor is activated, turning the damper, closing or opening the access of hot air to the cabin. This way the set temperature is automatically maintained. Next is a photo of the VAZ 2110 heater air duct diagram .

Furnace electronic control unit

The electronic control unit includes:

1. Controller handle. This device makes it possible to set the temperature in the cabin, which is produced by the stove unit. The controller handle sets the air temperature, which corresponds to that outside, and is turned on by turning the handle (up to 30 degrees Celsius). This part is usually called the ACS controller.
2. The temperature sensor controls the activation of the heater when the air temperature in the cabin decreases by 2 degrees against the set one. The sensor has a microfan, and when the control knob is located in position A, a micromotor in the stove block turns on, after which the damper begins to operate, which ensures proper heating. Therefore, before repairing the heating system, you need to check the operation of this sensor. It is located near the heating lamp on the ceiling. Since its repair is not provided, if it breaks, this device must be replaced immediately.

Stove fan.

VAZ 2110 heater blows cold, why?

Many owners of “ten” complain that at some point the stove constantly blows cold air and no amount of turning the handles of the automatic heater control system can save the situation. There can be a lot of problems and malfunctions. For example, the ACS controller itself is faulty, the ceiling sensor or micro-geared motor is faulty and simply does not open or close the damper. Another reason is the air (air lock) in the heater radiator, which is simply not capable of heating the air passing through it. Below is a schematic representation of the VAZ 2110 heater device .

Heater dampers VAZ 2110

Often the cause of poor performance of the “tens” heater is the damper of the VAZ 2110 heater . The damper may not close tightly or open poorly. The heater flap itself is made of plastic, which can become warped and perform poorly over time. Many car owners buy a metal damper and change it themselves. How to check the functionality and evaluate the condition of the heater damper? Everything is quite simple, remove the central air duct deflector and there you have it - a damper! Let's look at the photo.

Next, carefully inspect the damper, turn on the stove, turn the controls on the ACS unit and see if the damper works at all. How does it move, does it fit tightly. If she does not respond to commands, then the problem may not be her at all. For one thing, you can see if the lever for redirecting the air flow from the glass to the feet works.

Heater fan VAZ 2110

It is quite simple to determine the performance of a stove fan by looking at the noise. If the fan motor burns out, then it naturally will no longer work. However, before rushing to change the stove fan, you need to make sure that the fuse has not blown. As we already wrote above, the fan of the VAZ 2110 stove is located not in the cabin, but in the engine compartment. To get to it, you will need to remove a special apron that separates the engine compartment from the heater housing, vacuum brake booster and windshield wiper mechanism. The actual photo is below for clarity.

So we got to the stove fan, removing the apron and heater casing. By the way, next to you you will see the cabin filter, in the housing a little to the left. It needs to be pulled out and cleaned. If no one has changed the filter before you, over many years of operation it is seriously clogged with debris and interferes with the normal circulation of air, which is sucked into the cabin of the VAZ 2110.

Heater radiator VAZ 2110

The radiator of the “tens” heater is located in the same place as the fan, that is, under the hood (see photo above). To remove it, you must first remove the fan from the heater casing. If you notice a strange smell in the cabin, lift the floor mats; if there are puddles of antifreeze or antifreeze, then the radiator of the VAZ 2110 heater is leaking. Although the clamps may no longer hold... in any case, you will have to disassemble and find out the cause of the leak. Next, we offer a couple of videos demonstrating the process of disassembling, removing the apron, stove fan, cabin filter and heater radiator.

If the temperature is not regulated, reasons and how to fix it

If you cannot adjust the temperature of the air that enters the cabin, the fault may lie in the temperature sensor located on the ceiling, near the ceiling light. To check it, turn the control all the way to the right, then bring your hands to the air flow that comes from the heating system. If heat flows no matter what position the regulator is in (in the red part), then the problem is not with the sensor. But, if air flows only when the regulator is located in the maximum heating position, it must be replaced (or the regulator itself needs to be replaced).

You also need to check the condition of the damper. You get to it through the engine compartment - you need to remove the central deflectors and move the flap by hand. If you have to remove it, it is better to replace the plastic one, which comes standard, with an aluminum one, since it does not freeze and deform so quickly.

Replacing the stove tap with your own hands

Every motorist should be able to at least to some extent be able to maintain his car. This refers to a basic set of knowledge and skills that will help you save money on auto repair shops and prevent you from getting stuck in the middle of the road with a broken down car.

VAZ-2110 owners know firsthand about the problems that often arise with the heating system of this car. The weakest point in the heating system of the VAZ-2110 is the heater valve. Replacing it is not quick, but it can be done independently.

Video “Radiator repair using welding”

How to properly repair a radiator using welding - the video below provides visual instructions using the example of classic VAZ 2101-2107 models (the author of the video is the GARAGE channel. 6 by 4).

VAZ 2110 stove faucet

Replacing the heater tap on a VAZ 2110 is not an easy task. It requires knowledge of certain nuances. Nevertheless, replacing the valve of the VAZ 2110 stove can be done independently. This will be discussed in this article.

Installing a new faucet

The heater tap is not located on all VAZ-2110 vehicles. If your car is new, this item may not have been installed. Some cars may have a modified VAZ-2110 heater tap.

This device is regulated remotely, which cannot be said about the replacement process. Each VAZ-2110 owner must carefully monitor the condition of the valves, which will allow leaks to be identified and eliminated in a timely manner.

Basic Workflows

To replace an old tap with a new one, you will need a new element and keys for 7 and 10. Replacing the stove tap is carried out according to the following scheme:

1. Drain the coolant.
2. We find two hoses on the heater, which are secured with clamps. One serves for the outflow of liquid, and the other ensures its supply. There is no point in unscrewing the clamps completely; it will be enough to loosen them a little and easily dismantle them.
3. The VAZ-2110 heater valve may require replacement due to depressurization. In this case, there is a high probability of coolant leaking into the passenger compartment. If this situation occurs, then there will be a puddle under the carpet near the front passenger seat, and a characteristic odor will be present in the cabin.
4. We will continue to work on replacing the faucet. At this stage you need to unscrew a couple of bolts. A size 7 wrench will come in handy here. This will allow you to remove the seal. When unscrewing the bolts, care and caution will not hurt, since the fastener is made of plastic, and malfunctions may appear on the threads.
5. Remove the body from the box.
6. There is a bracket nut on the air duct, which must also be dismantled. At this stage you will need a 10mm wrench.

• There are clamps on the heater body; they will need to be disconnected.
• First of all, you should disconnect the right air duct, which due to its specific design can be a little complicated, which will make the work easier.
• There is a bracket with a fastening on the flexible cable, which just needs to be loosened a little.
• On the stove tap on the VAZ-2110 there are two nuts that serve as fastenings. To remove them, it is convenient to use a 10mm wrench. The valve is attached to the radiator using bolts. In some cars you can find a plastic tank, which is secured using cage nuts. The bottom nut in this design often falls out, so caution and attentiveness will not be superfluous. When assembling a device with this design, you will need to disconnect a pair of springs, due to which the fan housing is attached to the side where the faucet is located. All that remains is to lower the body a little, pressing down on it, and tighten the nut of the bolts.
• Now the tap can be easily removed and replaced with a new model.
• Assembly is carried out according to the same scheme, but in strictly reverse order. It is advisable to replace all gaskets with new ones. They are very inexpensive, but the heating of the car will annoy you less with its poor quality work. To ensure maximum adhesion, you can use special sealing agents.
• Our work is completed by pouring coolant into the system. After this, we start the car and bring the temperature to 90 degrees. Open the tap and look for possible leaks. If there are none, the replacement of the tap can be considered complete.

Now you not only know where the heater valve on the VAZ-2110 is located and how to open it, but you can also replace it with a new one yourself. When doing this work for the first time, difficulties may arise, and it will take a little more time. But in the future, you will already know how the heating system of your car is disassembled and will be able to quickly eliminate problems of a different nature.

Heater valve VAZ 2110

Replacing the stove tap on a VAZ 2110

There is a possibility that most users of VAZ 2110 cars will not be able to find this tap in their car. It was installed on earlier and recently released modifications of the car, and therefore, if the model was purchased not so long ago, then this mechanism may not be in this place. Although, some craftsmen manage to install a similar mechanism on their car. The heating system is one of those that most often breaks down. This part of the car allows you to drive the vehicle in different weather conditions with increased comfort.

VAZ 2110 stove faucet

This stove tap is adjusted remotely. In versions of VAZ 2101 - 2110 cars, this mechanism is one of the most frequently broken. After each trip, it is necessary to constantly monitor its valves. This is necessary to eliminate leaks. As soon as leaks are discovered, the equipment must be replaced immediately.

Note. It was this fact that forced the manufacturers of the VAZ 2110 to abandon the crane. But after modernizing the crane, they began to install it again.

Replacing the faucet

VAZ 2110 heater tap

To carry out work to replace this equipment, you must have a special tool on hand. You will need:

After each tool is ready, you must immediately begin replacing it. For this purpose, you must use the following methods:

• The engine must be drained of coolant.
• The heater has two hoses. They are secured with clamps. Liquid swells from one and flows into the other. These clamps need to be slightly loosened, but not completely unscrewed.

VAZ heater taps

• They must be disconnected from their mounting points.

Note: if the valve is replaced due to insufficient sealing, then, most likely, all the coolant has already managed to drain into the car interior before the repair is carried out. This problem can be detected if there is a puddle of the same liquid under the passenger seat rug. Also, if there is no coolant in the system, a constantly cold air stream will flow from the stove.

An undoubted companion to a fluid leak is the presence of a specific odor in the cabin.

• The two bolts are unscrewed with a key marked “7”.
• The rubber insulation is removed.

Faucet for stove VAZ 2110

Note: the bolts must be unscrewed carefully, since the fastener itself is plastic and the slightest failure in the thread can lead to major complications.

• The body is removed from the box.
• The duct has a bracket nut that needs to be removed. A wrench with the number “10” is used.

Electric stove faucet

• Using a screwdriver, you need to disconnect the clamps on the heater body.
• The right air duct is disconnected first.

Note: the right air duct has a specific “body”. If necessary, you can fold it a little.

• The flexible cable has a bracket with a fastening that must be loosened.
• They need to be disconnected.

Faucet for stove VAZ 21102

• The faucet has a fastening in the form of two nuts. They are removed using a wrench that has the number “10”. These bolts secure the faucet to the car's radiator.

Note. Some cars have a plastic reservoir. It has a fastening that is locked into cage nuts. You must always be careful here, since the lower nut has the ability to fall out.

When it becomes necessary to assemble this device, it is necessary to disconnect the two springs that secure the stove fan housing on the tap side. After completing this procedure, you need to slightly lower the body down and “tighten” the bolt nut. After which it must be clamped.

Heater valve for VAZ 2110 with outlet and inlet clamps

Assembly occurs in reverse order. It is necessary to consider the replacement of all rubber, polyurethane and other gaskets. Also, it is necessary to use a special product for better grip. Standard sealant will do.

VAZ 2110 stove faucet and heater

The last step is to add coolant to the car. As soon as the liquid is poured into the car, it is necessary to start it. The temperature must be brought to 90 degrees Celsius. The tap is opened and checked for fluid leakage. If there is no leak anywhere, the replacement was successful.

Faucet for stove VAZ 2110

The cost of such a product as a stove faucet for a VAZ 2110 is very insignificant. Even in the most remote cities of the country or small towns, you can find a similar crane without much worry. Detailed step-by-step videos and photos on replacement can be found on the Internet. The same applies to the equipment itself. If suddenly there is a need to replace the faucet, but it is not on sale in specialized stores or service stations, you can always place an order on the Internet. This crane will arrive after a few days, depending on the region. Payment can be made at the request of the customer or sales representative. It is necessary to prepare the car before starting work. To perform the work, it is necessary to place the car on a flat surface and secure it in one place. Also, the car should be completely cleaned of dirt. A sink is ideal. Care must be taken to ensure that water does not enter the engine operating systems. If you encounter even the slightest difficulty when replacing this faucet, it is better to contact specialists who will carry out this work for a small amount. As you can see, no special difficulties will arise when replacing the faucet yourself. It is advisable to do everything as required by the instructions. This way, you can avoid mistakes and save a lot of money, because the price of services from professionals is quite high.

Where is the faucet of the VAZ 2110 stove located?

In the latest releases of the VAZ 2110, the heater valve was abolished. The flow was adjusted by covering the air ducts. Before this, it was located under the hood, and thanks to a cable, it can be controlled from inside the car. By the way, this was one of the most capricious things in the equipment. Because she arranged surprises at the most inopportune moments, that is, the faucet began to leak. Some craftsmen replaced the capricious faucet with the most ordinary tap, and forgot about the problem for a long time.

The valve for the VAZ 2110 stove is located on the right side (passenger side) under the glove compartment. To get to it, you need to unscrew the cover of the instrument console.

Heater operation (stove) in manual and automatic mode

The air temperature in the cabin is set by setting the controller knob (temperature sensor) to the appropriate scale division (from 16°C to 30°C, with an interval of 2°C). The unit reads information about the temperature in the cabin from a temperature sensor located on the ceiling and equipped with a microfan. After. Depending on the temperature difference, it turns on a micromotor that controls the heater dampers. The micromotor is equipped with a heater damper position sensor (ring resistor). The signal from the sensor is sent to the control unit, which turns off the micromotor when the damper reaches this position. Automatic mode, in other words, position “A”, on the control unit adds to the adjustment of the gearmotor in addition to the adjustment of the fan rotation speed.

Replacing the heater valve Lada 2110 (VAZ 2110)

Comfortable conditions in the car interior are not only convenient and pleasant, but also safer. Warm air from the heater will prevent the windows from freezing in frosty weather and will dry foggy windows in humid weather, providing a good view.

But often various malfunctions occur in the interior heating system, and then it is necessary to replace the heater on a VAZ 2110. In addition to the heater radiator, defects can also appear in the faucet and resistor of the heater, in the fastenings of pipes and hoses.

Stove design

This unit includes several devices. The radiator is the main element of the stove - it heats the air entering the cabin. It is located under the hood. The next component is the air distributor, equipped with special pipes that run through the cabin of the 2110.

If we compare the “ten” with previous models, an important innovation has appeared in its heating system - an evaporator (the diagram includes it in the list). The device is installed in an air conditioning system. Not all owners know about its existence, since it rarely fails.

To control the operation of the heater, an SUAO unit is installed in the VAZ 2110 car, which is called a controller in the technical operating manual. The unit works in conjunction with a temperature sensor in the cabin; it is also called a ceiling sensor. The sensor reports the temperature to the unit, then this indicator is compared with the set temperature on the handle. If the indicators differ by more than 2°, warm or cooled air is supplied to the VAZ 2110 interior.

Troubleshooting

If the stove begins to heat poorly, the air from it is slightly warm, then first of all you need to check the antifreeze level. If it is insufficient, circulation in the engine-heater radiator circuit stops. After topping up, an air lock may form in the cooling system.

To eliminate it, you need to lift the front part of the car, for example, driving the front wheels onto an overpass, and let the engine idle for 10 minutes. If there was air in the system, you will need to add antifreeze.

The rotation speed of the heater fan on the VAZ 2110 is adjusted in steps by a switch. If only the maximum speed is turned on, and the electric motor does not work on the other two, then most likely the heater resistor has failed and needs to be replaced.

Sometimes, even at maximum fan speed, the air flow is insufficient. A possible cause may be a violation of the closing and opening of the dampers, but most often it is contamination of the cabin filter. In this case, a specific smell of dampness and mustiness is usually additionally felt. It is advisable to change the filter at every maintenance.

The most common malfunctions in the heating of the VAZ 2110 are leaks of the stove and faucet. The crane has always been a weak point in VAZ cars. During production, dozens of cranes were first installed, then cars were produced without it, then they began to be installed again, but this time structurally modified.

When antifreeze leaks, a puddle forms in the front passenger's feet, and there is a strong smell in the cabin. Sources of leakage can be the heater radiator, faucet, pipes where they are secured with clamps. This can only be accurately determined after disassembly, so it is better to replace it as a whole, especially since the pipes “tanner” after 3–5 years.

Setting the temperature of the supplied air from the heater

To fine-tune the control unit, it has an adjusting screw. To check the accuracy of temperature control, close all doors and windows and place a control thermometer next to the temperature sensor. Set the fan control knob to position A, and the temperature knob in accordance with the temperature measured by the control thermometer. If after 15 minutes the actual temperature in the cabin does not correspond to the set one, remove the controller from the socket and turn the adjusting screw clockwise to increase the temperature and counterclockwise to decrease it. After adjustment, check the operation of the control unit again. The control unit, temperature sensor with microfan, micromotor and heater damper position sensor cannot be repaired and must be replaced with new ones if they fail.

Disassembly and assembly

Replacing faulty parts in a VAZ 2110 heater is not very difficult, requires a minimum of tools, but takes a lot of time. Almost all work is carried out from the engine compartment, where the heater is mounted on the engine panel.

To gain access to it you need to dismantle:

• Engine shield insulation;
• Plastic trim under the windshield (“jabot”);
• Windshield wiper mechanism;
• Left and right heater covers.

The resistor is located on the right side (if we stand in front of the bumper and look at the engine compartment), it is secured with a screw. To get to it for replacement, you will have to remove the vacuum booster.

The cabin filter is “hidden” on the left in the opening inside the car; you can simply reach it with your hands.

The “old” and “new” non-interchangeable options were used; to replace, purchase a filter similar to the one installed.

To replace the heater and faucet on a VAZ 2110, you must first drain the coolant. To remove the stove, you need to disconnect the two pipes on the clamps and the steam exhaust hose. The stove itself is not attached and is held in place only by pressing the lid against the heater body. You can replace it with copper or aluminum, the former heat much better due to the high thermal conductivity of copper, the latter are more durable and cheaper.

At the tap, you need to disconnect two more hoses, which can be accessed from the interior by removing the glove box (“glove box”). The tap itself is attached to two 10mm nuts; before removal, the drive cable is disconnected. When replacing, new rubber seals must be installed.

Assembly is carried out in reverse order, the entire process can take more than four hours.

The need to replace the stove (heater) tap on VAZs is often caused by the fact that the tap is “dripping” or “stuck”. In both cases it needs to be replaced.

A leaking heater tap is more unpleasant, as it can lead to coolant flooding the entire interior. Such a malfunction may be indicated by wet marks or the smell of antifreeze in the cabin. To find the source of the coolant leak, you should inspect the heater valve. However, if cracks appear in the pipes or in the radiator, be aware that they can lead to an antifreeze leak.

If upon inspection it was possible to verify that the problem is in the valve of the VAZ 2114-2115 stove , it should be replaced.

To replace the VAZ 2114-2115 stove valve you need:

• a new heater tap (it is better to use a ceramic one, equipped with the necessary rubber gaskets and seals);
• penetrating fluid WD-40;
• a set of wrenches (you will need both ring and socket wrenches: “10”, “13”)
• Phillips and flat screwdrivers;
• clean coolant container;
• silicone based sealant;
• inspection pit/lift.

Instructions for replacing the heater valve VAZ 2114-2115

1. Place the vehicle on the inspection hole. Drain the coolant into a prepared container. You can read about how to do this and where to find the drain plug in this article.
2. Loosen the clamps of the pipes that go from the engine to the heater tap. Clean the threaded connections of the studs securing the heater valve. To do this, you can use a metal brush and penetrating liquid.

1. Remove the pipes one by one. In this case, coolant leaks are possible; it is better to prepare the container.
2. In the cabin, dismantle the side trim of the torpedo and pipes (if necessary). If they are not planned to be replaced, there is no need to unscrew them. Use a rag to remove any remaining antifreeze.
3. Using a 10mm socket wrench, unscrew the nuts that secure the heater valve.
4. Inside the cabin, pull the tap towards you, remove the spring clamp, and disconnect the control cable from the tap.

1. After this, you can install a new stove tap. Before screwing it on, you need to connect the cable.

Reassemble in reverse order. Between the body and the tap you need to install new gaskets and seals, add sealant when connecting the pipes. Before pouring antifreeze into the cooling system, you must tighten the drain plug.