How to change the heater motor on a VAZ 2110

The SAUO replaced manual control of the heater, but otherwise the stove remained structurally the same. As in earlier models, the interior heating system is a housing with a radiator installed inside, connected to the cooling system of the power unit - a heat source, dampers that redirect the air flow to the desired zones, and a fan driven by an electric motor, which creates the air flow. SAUO is a controller that, depending on the set parameters, monitors the temperature in the cabin and regulates the position of the dampers, maintaining the specified mode.

Video: Heater VAZ 2110; eleven; 12. Design and principle of operation.

The efficiency of the VAZ-2110 interior heater would be low without the forced creation of air flow, and this task falls on the stove fan.

Preparation

Preparatory activities do not include many complex operations. You will need to do the following:

Remove the negative terminal from the battery to de-energize the car and protect the car from possible short circuits;
Drain the coolant from the system. To do this, open the cap of the expansion tank to relieve excess pressure, and then unscrew the drain. The liquid must be drained into a special prepared container.

When draining the cooling liquid, one important rule must be observed - the procedure is carried out only when the engine has cooled down.

If in the future you are going to use the same antifreeze or antifreeze, then choose a clean container for draining.

Model selection

Even if your VAZ 2110 has an old-style electric motor (manufactured before 2004), you can, of course, find a “original” fan. But it is quite possible to install a new type of motor instead - it is larger than the previous one, secured with three bolts. And its cost is not that high.

By the way, the new model heater fan from the VAZ 2110 is even suitable for some Nissan models with minor modifications. This is what the owners of this car often use when they install at least three times cheaper motors in their foreign car during repairs.

Work to replace the fan in the cabin

Replacing the heater motor of a VAZ 2110

The subsequent change of the heater motor will be done directly from inside the car:

Under the dashboard you need to find the block that goes to the electric motor. She disconnects.
After this, you will need to unfasten the ground wiring of the electric motor. As a rule, it is pressed to the body by the front mounting nut of the heater.
The trim and lining of the windshield frame are dismantled, and you cannot do without unscrewing the mounting screws.
The right upholstery is removed from the interior heater, and the fastening nuts and screws should also be unscrewed.
The heating hoses are disconnected. At this stage of work, extreme caution must be taken, since antifreeze residues may leak from these hoses and the heater radiator.
To prevent the smell of coolant in the car interior, you need to lay a material that absorbs moisture well.
The wiring is disconnected from the electric motor, from the micro-reducer, and also from the pneumatic valve.
After these steps, remove the front housing with the stove casing. These elements are fixed with brackets and screws. It is worth noting that the engine and motor are located on the casing.
The latches are removed, and the engine and motor are removed.

Recommendations for replacing the motor

Replacing the heater motor of a VAZ 2110

You can disassemble the electric motor yourself only to evaluate the collector and clean it. If the cause of the breakdown lies in another situation, then it is not advisable for a non-specialist in working with such parts to disassemble it. It's better to buy a new electric motor.

Note! It is also not recommended to dismantle the engine impeller on your own, since installing it in its place will disrupt the balancing, which plays an important role. Naturally, the electric motor will function, but not smoothly, which can lead to breakage of the bearings and noise when the stove is turned on.

Since the stove is in a disassembled state, it becomes possible to calmly view the other components of the cabin heater. So:

In order for more heat to come from the radiator, you need to dismantle it and wash it. It is fixed on the rear heater casing, which is removed by unscrewing the mounting screws. After this, the radiator can be easily removed and washed under the pressure of water flowing from a hose that is connected to the radiator inlet or outlet tube. The same pressure washes away dirt from the surfaces of the removed radiator.
To disassemble the air ducts and heater control mechanisms, you will need to remove the instrument panel on which the main air ducts are located.

Note! Usually the panel with the main air ducts is made as one piece, so it must be handled with the utmost care so that it does not have to be replaced later.

After this, you need to remove the interior air ducts, which are secured with special screws, and the decorative lining of the floor tunnel.

Note! Under this trim there are air ducts for heating the feet, which are attached to the body with screws and latches.

The air distributor is removed from the dashboard by unscrewing the mounting screws and disconnecting the damper control rod.
Reassembly must be done in the reverse order of disassembly. If necessary, seal the dampers with glue. You can also seal the mounting points of the hoses with the radiator with sealant.
When all the parts are assembled and installed in their places, the functioning of all components is checked and antifreeze or antifreeze is added. It all depends on personal preference.
At the final stage, they check the tightness of the attachment of the hoses to the radiator and the actual operation of the assembled stove.

For those who perceive information visually, it is recommended to watch a video with a detailed description of the actions and several photos that will help you do everything correctly.

Fan repair (step by step)

The disassembly technology is very simple, but proceed carefully. Since electric motor failure lies in the wear of bearings and graphite brushes, let’s consider how to replace these elements:

Let's disassemble the electric motor. To do this, first remove the impeller, and then the two spring clamps of the motor support.
We remove the support.
Unscrew the screws securing the brush assembly and remove it.
Carefully knock out the rotor.
We clean the elements from dust and dirt.
From the inside of the stator, carefully bend the edges of the plate holding the bearing.
We knock out the bearing and install a new one in its place (for replacement you need bearing No. 609).
We bend the edges of the plate back.
We inspect the condition of the collector plates on the rotor and, if necessary, sand them with sandpaper (fine-grained).
We replace the worn brushes with new ones (we solder the wires of the worn ones, and in their place we solder the wires of the new elements).
We bend the stops of the brush springs (this will allow you to easily install the brush assembly in place).
We put the rotor in place.
We install and fix the brush assembly, having previously seated the brushes in their seats.
We install brush springs into the holes that covered the stops and bend the stops back.
Install the fan support and impeller.
We install the repaired fan on the car.

As you can see, it is not difficult to repair the VAZ-2110 heater fan, and this task can be handled in a garage, even without special skills in car repair.

Signs of a malfunctioning heater motor

First of all, you need to check the fuse.
It often turns out that this is the problem. If the heater fuse is blown for any reason, it should be replaced. If after replacing the fuse the stove still does not work, then you should proceed to dismantling and replacing the motor itself. The first sign of a malfunction of the heater motor on a VAZ 2110 may be noise from the motor itself. The reason for this sound may be the lack of lubrication on the engine, or it may indicate the imminent death of the heater motor on the VAZ 2110

Stove fan

Structurally, the fan consists of a DC electric motor with a commutator-brush assembly and an impeller mounted on the electric rotor. motor. The electric motor is powered from the vehicle’s on-board network. There are several modes of fan operation, the difference between which comes down only to the rotor rotation speed, and this is realized by inserting a resistor into the power supply circuit of the electric motor.

The fan operating mode is set using a handle located in the heater control unit on the center console. Initially, on the VAZ-2110, this handle was part of the design of the SAUO controller, but functioned separately from the controller itself. Later, the ACS added an automatic fan control function (position “A” on the handle), using which the controller regulates the rotation speed of the electric motor in order to maintain the set temperature.

The electric motor used in the design of the VAZ-2110 fan is simple, but it has “weak points” - the commutator-brush assembly and bearings. Wear of these elements causes incorrect operation and complete inoperability of the fan. Short circuits and winding breaks in the stove drive are rare, but don’t forget about these breakdowns either.

Symptoms of failure. Heater components that affect fan operation

Signs of a malfunctioning stove fan are quite obvious and impossible not to notice. Common symptoms of failure:

Increased noise, grinding noise during operation.
Significant reduction in air injection efficiency.
The fan does not turn on.
Spontaneous change in the rotation speed of the electric motor.
It can be determined by ear that the electric motor is operating under heavy load.

In some cases, such consequences result from malfunctions in the power supply and fan control circuits, so you should check them first. This applies to:

fuse (blowout is the cause of complete failure of the electric motor);
resistor (if it is faulty, some speed modes of the electric motor stop working);
controller (the knob for switching fan modes is part of its design, so malfunctions of the automatic control system affect the functioning of the electric motor);
wiring terminals of the power and control circuits (oxidation, damage to wires is one of the reasons for a malfunctioning electric fan).

If diagnostics of these elements shows that they are in good working order, it is necessary to dismantle and repair the fan itself. But it can be diagnosed first.

Fan check

A check is done by directly powering the electric motor from the battery (we lay wires from the battery terminals and connect them to the power terminals of the motor) - operation under load, difficulty in gaining rotation speed, squeals and squeaks indicate wear of the drive components and the need to replace them. But if, even with direct voltage supply, the electric motor does not start, it is most likely that it has burned out or the windings have broken. Such faults are difficult to fix and it is easier to replace the entire unit.

Design features of the stove of the old and new models

The design of the electric motor of the stove on the VAZ-2110 is identical, but the fans and their location are different. On models of the first years of production, the electric fan is installed in the stove housing in front of the radiator and it is located horizontally (old-style stoves). Afterwards, the design was revised - the fan was already placed in the cabin filter housing and installed vertically (new model heaters).

Despite the design features, dismantling the fan is a simple operation and does not require complete disassembly of the stove.

On a VAZ-2110 with an old-style heater, to remove the electric fan you need to:

Dismantle the frill.
Remove the front wall of the niche in which the heater is located.
Remove the back cover of the fan housing by first unscrewing the screws and removing the clamps.
Disconnect the wiring from the fan and remove it.

As for models with a new type of stove, the technology for removing the electric stove fan on such cars is different:

dismantle the “jabot” and the front wall;
remove the air filter;
unscrew the fastening of the filter housing to the stove body and separate them;
disconnect the wiring;
remove the filter housing together with the fan;
dismantle the electric fan.

After removing the electric motor with the impeller, we disassemble it, perform troubleshooting, replace worn elements and put it back together.

Video: Replacing the heater motor (heater fan) VAZ 2110, 2111 and 2112

How to replace the heater fan on a VAZ 2110-VAZ 2112?

Note! These instructions for replacing the heater motor are suitable for many cars of the tenth family, but not for all, because dozens were produced in very different configurations and designs throughout the entire time, some VAZ 2110 even had an engine from Opel installed from the factory, such a car is marked VAZ 21106, so we won’t be able to write about everything (since it will be a very long article), we’ll just take the most common tenth family and use its example to show how to replace a stove motor through descriptions and pictures!

1. First of all, you will need to get to the motor, it is hidden under a trim that is located under the windshield, and inside this trim, the motor is still placed in a casing, so you will have to remove a lot of decorative elements, in more detail how to do this is described in the article under title: “Replacing the cabin filter on a VAZ 2110” and by the way, the trim that is located under the windshield cannot be removed without removing the brush, and when you lift it, pay attention there will be a tee under it (see the place where it is located on the large photo), disconnect the hose from it that is connected at the bottom (see small photo) and the trim can then be removed from the car.

2. We go further, as soon as all the elements that prevent access to the casing in which the motor is located are removed, find the wires coming from the motor, or to be more precise, one “Plus” wire and one “Minus” wire, so here is the minus (Indicated in green arrow) is secured to the nut (indicated by a blue arrow), you unscrew it, but the plus (indicated by a yellow arrow) is connected to another wire through a wire block and a connector (see small photo), disconnect them from each other.

3. Then, using a flat screwdriver, pry out the four latches (They are indicated by arrows) that fasten two casings together, on one of which the stove motor is attached. Be sure to replace any latches that will be broken during their removal with new ones during reassembly. It is recommended to install all the fasteners in their places to prevent the housings from moving between each other.

4. And finally, unscrew all the screws that hold the casings together, there are only about 8 or 10 of these screws (We could be wrong), when they are all unscrewed, the casings can be separated (see small photo), but just remember where the screws go they are twisted because they have different lengths and you cannot wrap the long ones where the short ones should be located and vice versa.

Note! The stove motor can be removed assembled with the casing, or you can immediately take it out separately, it’s up to you how to do it, but having taken out everything assembled, it will be much easier to disconnect the motor (since it will be more convenient), and the motor is separated in the following way, you will only need just remove two wires (minus wire and plus wire) from the hole into which they are threaded in the casing and that’s it!

5. Installation is carried out in the reverse order of removal, after installing the stove, you will have to use the help of an assistant and find out whether you installed the stove correctly in its normal place or with a skew (If it is skewed, then this will need to be removed immediately), in general, closer to topic, ask an assistant or even get into the car yourself and turn on the stove, while assembling it, i.e. tighten the fastening screws (You don’t even have to tighten everything) and install the clamps and, of course, put the minus on the body, and connect the plus to the connector, then turn it on and if everything works fine in all modes, then turn it off and go tighten the last screws, install the covers under windshield and of course install the brushes, the replacement is complete, if after turning on you hear a crackling noise, then this only means one thing, namely that the heater blades are touching the body in which it is located, then turn off the heater and unscrew the screws , remove the clamps and remove the body together with the stove, place the motor there correctly, tighten everything again and try until the noise disappears, just like it disappeared, screw everything back and install all the parts in the reverse order.

How to remove and replace the heater motor on VAZ-2110, 2111 and 2112

Hi all. Today we will tell you how to get to the VAZ-2110 heater motor and remove it for repair or replacement. The procedure is relatively simple, you don’t have to disassemble the heater itself and this is a big plus, because disassembling it is really not as easy as it seems. So, let's start by following the instructions and removing the windshield trim and trim, the right soundproofing padding and the windshield wiper itself.

First of all, disconnect the battery. Then disconnect the positive connector of the heater motor:

Then, having gained access, unscrew the nut securing the heater motor mass:

We take a strong flat screwdriver and carefully unsnap the latches of the stove body, be careful, they are springy, do not lose sight of them #128578;

Carefully pull the front cover of the stove body towards you, do not break it off:

That's all, we replace the faulty motor or repair this one, although the manufacturer claims that they are not repairable, and we assemble everything in the reverse order. So we learned how to independently change the heater motor on VAZ-2110, 2111 and 2112. If you have any questions, we will be glad to see you on our forum in the VAZ-2110 club. Good luck to everyone on the roads, and fewer car breakdowns, especially stove breakdowns in the cold season!

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Home » Repair » Replacement of heater motor 2110, replacement of fan, repair of a new type stove

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.

How to Remove the Heater Motor on a VAZ 2110

Replacing a stove fan on a VAZ 2110, VAZ 2111, VAZ 2112

Welcome! Fan oven. If you go into the terminology, the word "fan" means an impeller with blades, but people are so used to saying the word "fan", so this article, which we have named, will actually discuss the issue of replacing the heater, to warn that if the motor that you started doing something wrong, for example, or all the contacts inside it burned out, do not try to restore it, but rather buy a new machine in the store, of course, it is not cheap, but you will install it and forget about the child for a very long time if he is completely gone , Roche and oven stopped working (motor burned out) and it's cold outside, you can take it cheap to analyze or browse various flea markets and much more. d.

The note! To replace the oven you will need: screwdrivers of different types (from short to long), wrenches, spanners, and we recommend stocking up on a new cabin filter (this is only if the filter has not been changed for a long time) To simply remove furnace motor, you need to remove the windshield, and by removing the trim, you will still have access to the cabin filter!

Result:

Where is the fan? When you remove the windshield you should have the following image (see photo below), note the red arrow, it was designed to separate the housing that houses the engine (on the right) and to separate the air intake on the left). There is also a cabin filter where the air intake is located in the oven.

When should I replace the fan? At the beginning of the article we roughly described all the symptoms that can occur if the motor fails, but we must repeat that not all people read everything that is written on the page, in general, this is closer to the essence of the fan. can completely break down (over time, and if there was a lot of voltage, it can simply burn out. Such cases occur due to the negligence of people themselves, some put coins instead of fuses, the wiring begins to melt, and since there is no fuse, the circuit is not opened and not published ( does not work), it may partially (does not work at speed, but this is not an oven, most likely it is the SAUO unit, check, just change it to a known product, if everything starts to work, the unit is still replaced) they start making unpleasant noises and (this is also an oven), for example, squeaking, etc., all these malfunctions appear temporarily and can immediately after purchase if the plate is damaged or should have been in this condition.

The note! By the way, in addition to the engine itself, much more comes out of the system, most often this is the SAUO unit, at least the stove itself, well, don’t forget about the fuse, otherwise you will disassemble the entire stove, replace the engine and other heating parts, but do not change anything, then look in fuse box and you will see a blown fuse on the plate, this will be very annoying if you are just throwing money away, so always with any breakdown, first open the assembly and see if there are fuses, see F18!

Replacing the heater motor (heater fan) VAZ 2110, 2111 and 2112

Detailed video instructions for replacing the heater fan ( oven

) on
VAZ 2110
, 2111 and 2112 cars.

VAZ 2112. how to change the combustion engine (new model).

Video review of a new type of replacement electric fan heater for VAZ 2110

Do it yourself.

How to replace the oven fan on a VAZ 2110-VAZ 2112?

The note! These instructions for replacing the furnace heater are suitable for many cars of the tenth family, but not for all, since dozens were manufactured with very different levels of trim and design, for some VAZ 2110 even the Opel engine was supplied from the factory, such a VAZ car marked 21106. so we can't write about everything (because it would be a very long article), just take the most common tenth family and use it to show furnace motor replacement with description tools and drawings. !

How to remove and replace the heater motor on VAZ-2110, 2111 and 2112

First of all, disconnect the battery. Then disconnect the positive connector of the heater motor:

Then, having gained access, unscrew the nut securing the heater motor mass:

We take a strong flat screwdriver and carefully unsnap the latches of the stove body, be careful, they are springy, do not lose sight of them #128578;

Carefully pull the front cover of the stove body towards you, do not break it off: