Purpose of the VAZ 2108/09 stove fan, problems and their elimination

The heater motor plays an important role in ensuring the normal functioning of your car's heating system. Therefore, if the motor fails, it needs to be replaced.

Appearance of the device

Work on replacing the stove motor can be divided into two main stages:

• Preparation;
• Replacement.

About each stage in more detail.

Replacing the stove fan on a VAZ-2114: step-by-step instructions for removing “A” to “Z” from the video

Fan selection

Now that the process is understood and thought out, it is necessary to consider which stove fan is suitable for the VAZ-2114. To do this, first consult the spare parts catalogue. In addition to the original spare parts, a number of analogues recommended for installation were found.

Original spare part (article)

2108-8101078 - the original catalog number of the stove engine for the Lada family of cars 2108-21099, as well as 2113-2115. It is produced at the AvtoVAZ plant, and the average cost is 2000 rubles.

In addition to the original stove fan, there are several analogs on the market that are recommended for installation.

So, let's consider all the possible options:

• Fenox HM81002 - the cost of this product is 1500 rubles. Country of origin: Belarus.
• Master sport 2108-8101078-PCS-MS - the average cost is also about 1,500 rubles. Country of origin: Germany.

Fenox analogue heater motor

Unfortunately, it was not possible to find other analogues, but some motorists are modernizing this unit by reworking it.

The whole assembly is assembled

Or buy all the spare parts assembled, here are the article numbers:

• Pekar 2108-8101091 is a very popular option among VAZ-2114 owners. Reviews are good, cost about 1500 rubles.

Replacing the stove fan on a VAZ-2114 is quite easy and simple. As practice shows, most motorists do just that, saving time and money. But, if the process seems very complicated, it is recommended to contact the service, where everything will be done quickly and efficiently.

Experienced car enthusiast. I have an automotive education, that is, an engine repair mechanic. At the beginning of my career there was a VAZ-2107, then a BMW 5 Series, a Toyota Supra and a right-hand drive MARK-2. Now the family has 2 cars: Peugeot 407 and Dodge Challenger 2016. I study each car from “A” to “Z”. I have a lot of experience and try to repair each one with my own hands.

Which motor to choose

When choosing a replacement device, it is recommended to purchase domestically produced electric fan motors, original ones manufactured by AvtoVAZ. Their number is indicated in the catalog as 2108-8101078. They are quite universal and are installed on VAZ models 8 to 9 and 13 to 15, so they are easy to find for sale at any car dealership.

Among the available analogues, but at the same time proven to be good, it should be noted: Fenox HM 81002 from Belarus and Master-sport 2108-8101078-PCS-MS made in Germany. Both of these engines have approximately the same cost (about 1,500 rubles) and are of equally high quality.

Fenox stove motor

If you want (or need, for example, due to damage to the air duct) to purchase and install the entire fan unit, you should give preference to the Pekar 2108-8101091 and Luzar 2108-8101091 models. They combine high quality workmanship and economical cost.

Pekar stove motor

Therefore, replacing the motor or even the entire fan yourself will not be difficult. The most important thing is not to rush, but first check all possible causes of the malfunction, and only then proceed with replacement.

Appearance and location of the stove motor

The device is located in the middle of the so-called torpedo and is a small DC electric motor to which a fan protected by a plastic casing is connected. This engine has three operating modes and is designed to supply warm air to three zones: on the windshield, at the feet of passengers or directly into the cabin.

The protective motor cover has been removed, the fan is visible

Car heating system design

The 2108 heating system consists of the following components:

• draft, which affects the heater valve of the VAZ 2108;
• damper control lever;
• additional resistor;
• a motor that affects the rotation of the fan;
• system operating mode switch.

Heater valve VAZ 2108

When does the heater motor need to be replaced?

There are several signs that will tell a car owner that something is wrong with the heater motor. Here are the most common:

• When you try to light the heater, you do not hear the engine hum, and this image is observed at all three speeds.
• The engine supplies air at all speeds, but operates intermittently.
• The engine operation is stable, there are no interruptions in the supply of hot air, but instead of a uniform hum, extraneous sounds are heard, a grinding sound, which later develops into a piercing squeak.

Connection diagram, resistors and fan relays

Changing a fan is, in principle, not difficult, but you will have to remember about military service and the vocabulary of the duty officer. We have placed on the page the technical characteristics of the fan and its connection diagram, if this somehow helps with disassembly. Just in case someone cannot find the original fan, the motor must develop at least 4200 rpm with a current consumption of no more than 14 amperes.

Whistling and howling can be different in different engine operating modes. This is due to the fact that the connection diagram assumes the presence of a resistor with a resistance of 0.23 and 0.65 Ohms. One limits the current for low speed, and the other limits the current for obtaining second speed. But this is a theory.

Instructions for replacing the VAZ 2114 stove motor

First, let's list the consumables and tools we need:

• a new engine for the VAZ 2114 stove (and you need to purchase it complete with a fan and a protective cover);
• set of open-end wrenches;
• Phillips screwdriver (medium size).

To change the motor yourself, you need to follow the following sequence of actions:

1. The hood of the car is opened, the terminal with the minus sign is disconnected from the battery using a fixed key 10".
2. Inside the car, under the dashboard, there is a power cord for the oven motor. Removed manually from the connector.

The “positive” engine power cable is located in the cab, under the instrument panel

Now in the engine compartment, using an 8 mm wrench, unscrew the 2 nuts securing the fan casing. There is also a nut with which the vehicle ground wire is attached to the casing. It also unscrews.

Next to the crankcase nuts there is also a “mass” nut, also unscrewed

Additionally, use a Phillips screwdriver to unscrew the additional fan mounting bolts.

An additional pair of mounting bolts can be unscrewed with a Phillips screwdriver.

The air intake grille is unhooked and removed, providing access to the engine, which is held on a special bracket.

When all fasteners are unscrewed, the air intake grille is removed manually

To remove it, the engine is first pulled towards itself, then rotated 90 degrees, removed from the mounting bracket and removed from its normal position.

The heater motor is first attracted to itself, then rotates at a right angle

• Now a new engine is installed in place of the burnt out device, after which all the units are assembled.

Video: replacing the heater motor on a VAZ 2114

Preparatory work

• First, the “mass” terminal is removed from the battery.

Replacing the motor on the VAZ 2110 stove

• Next, the coolant is drained from the cooling system into a prepared container.
• If you intend to use old antifreeze, it is necessary to let it settle before pouring it into the engine cooling system.

Important points

In order for the stove repair to proceed as quickly as possible and its results not to disappoint the car owner, you must adhere to the following rules:

As practice shows, replacing an engine is not particularly difficult even for a novice motorist if he has held a wrench and a screwdriver in his hand at least once in his life. The entire procedure takes a maximum of 40-50 minutes. The main thing is not to overdo it with tightening the fasteners and everything will be fine.

Replacement of micromotor gearbox

To replace an element, you will need to perform several not particularly complex activities. Therefore, it is not at all necessary to go to a service station and pay a lot of money for their services.

1. First of all, remove the frill.
2. Next, the vacuum brake booster is dismantled.
3. After this, you still need to remove the pedal assembly.
4. Now we begin to dismantle the old micro-gearbox along with the plastic component.
5. A new micromotor gearbox should be installed in place of the damper sector. There you will see a similar square.

Article on the topic: Stabilizer struts for VAZ 2114

Device location

Practice shows that replacing a micro-gearbox does not require special skills, a lot of time or excessive effort. However, never forget to be careful.

But in order to install the damper of your micro-geared motor, you will need to invite an assistant.

1. First, the contacts are connected to the new micro-gearbox, that is, the motor.
2. By turning the damper counterclockwise, you turn on the cold air supply.
3. Turn on the ignition and turn the heater control system (SAUO) sensor to the position directly opposite the blue dot of the regulator.
4. Or you can do the opposite, that is, check the micro-gear motor by installing the sensor opposite the red dot, and turn the damper all the way clockwise.
5. The micro-gearbox rotates slightly more than required, so for proper installation it is recommended to use a special lubricant for the square.
6. Install the motor so that the holes for the screws match.
7. Now you need the help of your friend, since his task will be to turn the temperature regulator and at the same time press the motor inward.
8. If the squares match, the replacement of the micromotor reducer can be considered successful. Now the air should flow to the desired temperature inside the cabin.
9. Don't worry if the square doesn't go the full length of the flap you're using. This is normal when the gear motor goes about a third of the way. This installation will not affect the performance of the system in any way.
10. Now all that remains is to return the screws to their place and twist the micro-gearbox several times - from the blue mark to the red one, and in the reverse order.
11. These manipulations will allow the stove to remember what operating range the new gearbox has. Therefore, there will be no problems with its performance in the future.

If everything is done carefully and in accordance with the instructions, when you turn the damper, the micromotor reducer of your stove will not move to the required position. By turning on the device in mode with the “A” icon, control and adjustment will be carried out automatically - with an error of no more than 2 degrees.

Article on the topic: Connecting a tachometer to a VAZ 2109 (carburetor)

Installation

To install the gearmotor, you will need a certain set of tools, which include:

• Open-end wrench 10 millimeters;
• Crosshead screwdriver;
• Spanners.

Don't worry if you're new to doing car repairs yourself. There is nothing complicated about replacing a gearmotor.

1. Remove the windshield wipers from the fuse to gain access to the device. To do this, you need to dismantle the contact nut and then release the frill.
2. You will have access to the screws.
3. Two nuts are unscrewed on the sides of the frill, and then the rubber seal is removed from the electric motor compartment of the gearbox.
4. Disconnect the damper jabot pipeline by disconnecting it.
5. Remove the screws that hold the gearbox thermal radiators.
6. The motor is located on the left in the damper gear box, right next to the brake booster.
7. Next, you need to unscrew the lower mounting screw and remove the electric motor.
8. The damper assembly should be carried out strictly in the reverse order. Moreover, do this only after the gearmotor has been installed.

The principle of operation of the VAZ 2114 stove

The design features and operating principle of the heating system are identical on almost all VAZ models. When the heater is turned on, through the regulator located inside the car, the system supplies antifreeze to the radiator (the temperature of which after heating is about 90 degrees). In addition, a fan is included that can operate in one of three speed modes.

The fan creates a direct flow of air that circulates from outside the heating system into the vehicle. Using control flaps, the driver can choose one of three heating zones: feet, windshield or cabin.

The VAZ 2114 stove fan is one of the key parts of the entire heating system, at the output of which the heating efficiency is reduced to almost zero. If the heater fan does not work, then the hot air heated by the radiator simply does not enter the cabin in the required quantity and it may take 2-3 hours to warm up the car, which normally needs to be done in 5-10 minutes.

What to do if heat transfer from the stove is low

We unscrew the passenger dashboard from the side. Take a close look at the pipes coming out of the furnace. Assess how hot they are. If they are cold, they are clogged and need cleaning. After cleaning them, monitor the engine using a sensor.

What should I do if the replacement did not work and the engine still does not start?

To avoid unforeseen situations, the best way out of their situation is to contact a car service.

Comfort in a modern car should be quiet. That is, all devices and devices that must operate silently must be quiet, otherwise, due to the singing choir of the air conditioner, heater, windshield wiper motor and washing machine, the sound background may not be the most favorable for traveling. One of the soloists in this symphony may be a stove fanatic, so we'll look at some ways to combat this.

Content:

Causes of heating system malfunction

If the VAZ 2114 stove does not work, then the reasons should be sought among the following possible malfunctions:

Fuse fuse location (F7)

A failed stove fuse is one of the most common and at the same time easily repairable faults.

The fourteenth unit has a heater fuse type F7, with a current strength of 30 A. It should be noted that a failed heater fuse will also lead to failure of the cigarette lighter and glove box lighting, the electric water pump for cleaning the headlights and the heated rear window, since all of these systems operate from a fuse.

Situations often arise when installed fuses blow out one after another - the cause may be a short circuit, to identify the source of which you will have to go through the entire safety circuit

• No contact inside the mounting block

This is also a fairly common problem caused by oxidation of wires during operation. The solution is quite simple, you need to lay the wiring in the block where they are fixed in front of the mounting block and, if necessary, replace the contact group.

A jammed ignition relay can also be the reason why the heater fan on a VAZ 2114 does not work. This is quite simple: if the fan starts working only when the car engine is completely warmed up, the malfunction is related to the ignition relay. To eliminate them, you will have to completely replace the relay.

• The stove does not work in speed modes 1 and 2

If the fan turns on only at maximum speed (there are 3 in total), then the heater resistance must be changed. The design features of the heating system are such that in 1- and 2-speed modes the fan is powered through an additional resistor, and in the 3rd mode - directly from the battery.

• Fan motor problems

If the VAZ 2114 cooling fan does not work, but all of the above problems are eliminated, one reason remains - a faulty VAZ 2114 stove motor. It may burn out or have poor contact with the power supply due to the mass that comes out, and fan brushes often also stick to it.

You will have to change the heater motor to a new one, because if it starts to “stand out”, this will happen many times in the future.

Reasons for refusal

If your heater is not working and the engine shows no signs of life, you definitely need to check the system and find out what the problem is. However, first you need to clearly understand why the error may occur and whether the engine can be repaired. Let's look at the main problems.

1. Fuse failure. If a short circuit occurs somewhere in the circuit, the fuse will protect the fan from damage. It is very easy to replace and there is no need to buy a new device. However, it is also important to find out exactly where the short circuit occurred in the circuit and for what reason. If this is not corrected, the next fuse installed will blow in the same way.
2. Poor contact in the mounting block. This malfunction occurs on a wide variety of cars, and the VAZ-2114 is no exception. Most likely, oxidation has occurred.
3. Problems with the ignition relay. The engine starts only after the car has warmed up. When such problems occur, you need to check the relay, which is most likely to stick. Replace it and check if the heating works.
4. Heating operates only at third speed. A feature of the fan power circuit is a direct connection only to the 3rd speed; the remaining modes are connected through a resistor. If you encounter problems like these, it's time to replace the resistor.

The above list of “diseases” is far from complete.

There are other fan malfunctions, but we will not go into detail about them. Next, we’ll talk about how to disassemble a part for repair or replacement.

Replacing the heating motor (fan)

When the reason why the heater fan on the VAZ 2114 does not work has been identified, it is necessary to begin eliminating it. There are a sufficient number of fans on the market in different price categories: from cheap Chinese models, the quality and durability of which are questionable, to reliable and durable options, the cost of which is much higher.

According to reviews from the owners of the fourteenth VAZ, Luzar fans are the best option in terms of price-quality ratio. The current cost of which today is about 1200 rubles.

Removing the heater fan on a VAZ 2114 is quite simple - it is located in a special container located in front of the windshield in the hood compartment. The only tools we need are a screwdriver and a set of keys. Let's consider the algorithm of actions by which the stove fan is replaced on a VAZ 2114:

1. First, disconnect the negative pole from the battery;
2. In the fourteenth cabin, the positive engine power wire runs under the dashboard; it must be disconnected;
3. We move under the hood of the fourteenth. The fan casing cover is fixed with two screws; they need to be unscrewed;
4. We remove the “ground” of the engine; to do this, you need to unscrew the nut from below that secures it to the body of the heater housing;
5. Open the cover and unscrew the two screws securing the fan;
6. Then we unscrew the screws that secure the air intake grilles to the body in front of the windshield. We remove them;
7. Now you can remove the heater motor on the VAZ 2114, since all its fastenings have been removed. The fan is attached to a hook on the body: slide it towards you and lift it up;
8. After removing the motor from the hook, you will need to rotate it 90 degrees so that it can freely come out of the crankcase and remove it.

Replacing the stove motor on a VAZ 2114 is carried out similarly in the reverse order. As you can see, there is nothing complicated here, and all repair work can be carried out at home without any problems. Have a good trip!

fan. The internal ventilation system of the Lada 2115 is capable of organizing the circulation of air flows under the influence of natural air pressure that occurs when driving at a decent speed. The fan heater can artificially pump air into the cabin, the rotation speed of which is gradually regulated by the control unit.

Stories from our readers

“Fucking basin. "

Hi all! My name is Mikhail, now I’ll tell you a story about how I managed to exchange my two-wheeler for a 2010 Camry. It all started with the fact that I began to be wildly irritated by the breakdowns of the two-wheeler, it seemed like nothing serious was broken, but damn it, there were so many little things that really started to irritate me. This is where the idea arose that it was time to change the car to a foreign car. The choice fell on the melting Camry of the tenth years.

Yes, I had matured morally, but financially I just couldn’t handle it. I’ll say right away that I am against loans and taking a car, especially not a new one, on credit is unreasonable. My salary is 24k a month, so collecting 600-700 thousand is almost impossible for me. I started looking for different ways to make money on the Internet. You can’t imagine how many scams there are, what I haven’t tried: sports betting, network marketing, and even the volcano casino, where I successfully lost about 10 thousand ((The only direction in which it seemed to me that I could make money was currency trading on the stock exchange, they call it Forex. But when I started delving into it, I realized that it was very difficult for me. I continued to dig further and came across binary options. The essence is the same as in Forex, but it’s much easier to understand. I started reading forums, studying trading strategies. I tried it on a demo account, then opened a real account. To be honest, I didn’t manage to start earning money right away, until I understood all the mechanics of options, I lost about 3,000 rubles, but as it turned out, it was a precious experience. Now I earn 5-7 thousand rubles a day. I managed to get the car buy after half a year, but in my opinion this is a good result, and it’s not about the car, my life has changed, I naturally quit my job, I have more free time for myself and my family. You’ll laugh, but I work directly on the phone)) If If you want to change your life like me, then here’s what I advise you to do right now: 1. Register on the site 2. Practice on a Demo account (it’s free). 3. As soon as you get something on the Demo account, top up your REAL ACCOUNT and go to REAL MONEY! I also advise you to download the application to your phone, it’s much more convenient to work from your phone. Download here.

Approximate price 1200 rub.

Which heater motor is suitable for my car? For old-style heaters, a fan with catalog number is suitable: 2108-8101078. For new model heaters: 2111-8118020, 2111-8118020-01 and 2111-8118020-02.

So, let’s vote and leave reviews about the heater fans:

1. Which manufacturer is better to choose?
2. How often did you have to change the stove motor?

When does the heater fan need to be replaced?

The “resolution” to replace this unit on a VAZ 2114 car should be not only in case of complete inaction, which is a consequence of:

• short circuit of the armature winding to ground or its break;
• collector wear;
• brush suspension.

The electric motor is also subject to inspection and it is very likely that its further disposal will be required, the armature of which rotates rather slowly at any speed due to:

• reservoir oxidation/contamination;
• interturn closure of the armature winding;
• wear of bearings and seats of rolling bearings.

For your information. If there is a short circuit in the armature winding of the electric motor, fuse F7 is immediately triggered, which is simultaneously responsible for the cigarette lighter, glove compartment lighting and heated rear window.

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:

1. Let's disassemble the electric motor. To do this, first remove the impeller, and then the two spring clamps of the motor support.
2. We remove the support.
3. Unscrew the screws securing the brush assembly and remove it.
4. Carefully knock out the rotor.
5. We clean the elements from dust and dirt.
6. From the inside of the stator, carefully bend the edges of the plate holding the bearing.
7. We knock out the bearing and install a new one in its place (for replacement you need bearing No. 609).
8. We bend the edges of the plate back.
9. We inspect the condition of the collector plates on the rotor and, if necessary, sand them with sandpaper (fine-grained).
10. 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).
11. We bend the stops of the brush springs (this will allow you to easily install the brush assembly in place).
12. We put the rotor in place.
13. We install and fix the brush assembly, having previously seated the brushes in their seats.
14. We install brush springs into the holes that covered the stops and bend the stops back.
15. Install the fan support and impeller.
16. 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.

How to replace the VAZ 2110 stove motor? You can remove the heater electric motor without dismantling the entire heater (instructions).

What is the cost of a heater fan for a “ten” VAZ 2110?

Removing and replacing the electric motor

heating The electric motor is attached to the heater body with two screws. After disassembling the connections with a Phillips screwdriver, you need to disconnect the motor and heating element and pull the previously disconnected wires through the gasket. The electric fan can be removed from the engine compartment as follows:

• slightly raise the unit;
• remove the front supporting surface from the coupling to the heater body by sliding the motor toward you;
• turn the engine 90 degrees;
• remove the structure from the compartment.

“Experts” advise considering another principle for disassembling the unit, which at the same time includes some measures for disassembling the product:

• rotate the device around the axis of rotation so that the output window “looks” at the performer;
• remove the foam seal;
• separate the halves of the unit body by prying it with a flat screwdriver at the junction;
• extend the left half, moving it to the left edge;
• Pull out the right half by sliding it to the left first.

You can completely replace the stove fan on a VAZ 2114 only after disassembling the right half of the unit casing:

• release the two latches that secure the cover to the body;
• remove the engine casing;
• Remove the electric motor and impeller assembly.

• when replacing an assembled device, do not disassemble the old product;
• Before disassembling the electric motor, it is recommended to evaluate its performance by connecting the device to the battery;
• It is prohibited to remove the impeller from the shaft, in particular a new electric motor, to avoid imbalance;
• All work must be carried out with the battery disconnected.

Before installing a new unit, the inlet to the heating system must be cleaned. Installation of a new product is carried out in reverse order. Having positioned the structure near the seat, it is necessary to glue a new foam rubber seal along the contour in contact with the heating system. Upon completion of work in the engine compartment, it is necessary to connect the unit to the on-board controller and, preferably, replace the cabin filter.

Electric heater motor VAZ 2110 without casing (until 2003) (LUZAR) LFh 0110

Both RRP prices (recommended retail price) or the one indicated below are available for ordering.

Your review will be published after being moderated

Show all analogues

Thank you for your attention to the project. Together we will make dvizhkom.rf better. After correcting the inaccuracies, we will send you an email telling you about the changes.

Unfortunately, now you can order more if you call us at 8-800-775-7556

Prices, product availability and delivery methods depend on the selected city.

The quantity to order an item must be a multiple of

We have sent you a password to the specified email address. You can change your password or other registration data in your personal account settings

Hereby, in accordance with Federal Law No. 152-FZ “On Personal Data” dated July 27, 2006, you confirm your consent to the processing of personal data by RAT LLC: collection, systematization, accumulation, storage, clarification (updating, changing), use, transfer solely for the purpose of fulfilling your order and informing about it, as well as promotions and campaigns of RAT LLC, including blocking, depersonalization, destruction. We, RAT LLC, guarantee the confidentiality of the information we receive. The processing of personal data is carried out for the purpose of effective execution of orders, contracts and other obligations accepted by RAT LLC as binding on you.

This consent applies to the following personal data: last name, first name and patronymic, email address, postal address for delivery of orders, contact phone number, payment details.

Eventually

Disposal of an old heater motor most often occurs due to wear of the commutator (after 100,000 km) or a short circuit of the armature winding, which will be indicated by a “quiet” or slowly rotating shaft, as well as a blown fuse F7.

The method of replacing a faulty VAZ 2114 stove fan is simplified as follows:

• disconnect the device from the on-board network;
• remove the deflectors and cabin filter;
• remove the protective cover;
• remove the electric motor complete with casing or in parts;
• remove the motor unit with the impeller from the casing;
• Install the new drive and reassemble it in reverse order.

A warm interior is the key to a pleasant and comfortable trip by car. A non-working stove can not only cause discomfort, but also generally become an argument against further trips by car. It’s one thing when you arrived at the garage, noticed a non-working heater and during a breakdown refused to move further in the car, but if this breakdown caught you on the road, then it’s far from the nearest service station and it’s not possible to drive a car with a non-working internal heater, because that the windshield becomes covered with frost and further movement becomes dangerous. Then all that remains is to transport the car using a tow truck or try to repair it yourself.

Stop trash

In some cases, you can negotiate with the engine by lubricating the bushings with graphite lubricant. There is no guarantee that he will calm down, but you can try. Throw it away anyway. The noise, creaking and squealing of the fan can be attributed not only to the engine itself. Often there is a banal clogging of the air duct and debris getting into the fan. The narrowness of the situation lies in the fact that it is almost impossible to control it without disassembling the fan.

Whatever you want, you have to fight for the heat in the car. And if this heat is also quiet, it is priceless. However, it is better to try to prevent debris from getting into the air duct, so the VAZ 2114 will delight its owner with a warm and quiet interior. Good luck on the roads!

An electric motor driven fan is used to force air flow into the internal heating system. Thanks to this fan, the efficiency of the heater increases.

Diagnostics

The main task is to identify the cause of the breakdown and assess your capabilities in a specific situation.

Let's start with simple ones and move on to more complex ones:

1. We check the fuse (F-7 for a voltage of 30 A), which is responsible not only for the heating system, but also for the operation of: the cigarette lighter, heated mirrors, glove compartment lighting, headlight washers. Therefore, when this fuse blows, all of the above devices refuse to work. If it works, we move further along the chain.
2. Turn on the car's ignition and set the speed control to positions 1, 2, 3 in order. If the fan does not work in any of these positions, move on.
3. If the electric motor does not show signs of life in the first and second positions of the speed switch, but in the third position it starts to work (the fan is powered at the first and second speeds through a resistor, and in the third speed the current flows directly to the electric motor), the problem lies in the resistance or in the switch itself .
4. If the heater motor comes on after the car engine has warmed up, the problem is a faulty ignition relay. Solved by replacing the relay.
5. If the heater motor refuses to work in any mode, then the fault remains - it is the heater motor itself.

For the final verdict, we apply the “+” directly to the motor by disconnecting the positive wire terminal from the motor. If the motor does not come to life, the last thing to try is to try to clear the area under the ground support on the electric motor. Often this place oxidizes and the contact weakens.

Examination

To make sure that the motor is the cause of the heating system malfunction, you should carry out a simple but indicative procedure:

• Start the car;
• Turn on the first, second and third speeds of the stove alternately;
• If there are no sounds indicating the start of the fan operation, the motor has failed;
• If the fan did not turn on at speeds 1 and 2, but started working at speed 3, then the cause of the problem may be a switch or an additional resistor.

Causes of failure

The motor may not work for several reasons. Each of them requires separate consideration. Therefore, we invite you to familiarize yourself with the possible causes of fan failure in our table.

Depending on the problems encountered, you may need to replace the fan. Changing the motor is not difficult, although to do this you must have some skill or at least minimal experience in working with the electrical equipment of your car.

The first step when replacing the heater motor is to disconnect the battery.

Motor location

How to remove the heater fan on a VAZ-2114

If none of the above is successful, we will remove the electric motor of the stove; for this we will need a screwdriver and a small set of keys.

1. Disconnect the terminals from the battery.
2. There is a positive and a negative terminal in the cabin under the instrument panel; they must be disconnected.
3. Next we move to the engine compartment of the VAZ-2114; the fan casing cover can be removed by unscrewing the four fastening screws.
4. After opening the cover, you need to unscrew the two screws that secure the fan.
5. Next, unscrew the screws that secure the air intake grilles to the body in front of the windshield. Let's remove them.
6. Next, we remove the electric motor of the stove, since all its supports have already been disassembled. The fan is located on a hook on the case: slide it towards you and lift it up.
7. After removing the fan shroud from the hook, you must rotate it 90 degrees to remove it from the shroud, or disassemble the heater shroud to make removal easier.
8. Disconnect the impeller motor from the housing.
9. Remove the impeller from the engine.
10. There are several more options: either replace the electric motor with a new one, or try to bring the old one back to life (if it is advisable, for example, replace the brushes. If the winding breaks or there are problems with the armature, then it is better to replace the entire motor).
11. Next, we assemble everything in reverse order, removing all debris from the heater shaft.

After the work done, we enjoy the rustle of the heating motor, the warmth and comfort of our car. These simple tips will help you save money and continue your planned trip.

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.

Functional purpose of an automotive resistor

VAZ 2110 heater resistor replacement

From a practical point of view, a resistor acts as a current intermediary between the source and the final destination. The source of current in a car is the battery, but the final destination is any device that requires electricity. Main functions of car resistor:

• maintaining the functioning of an integral electric furnace in a car;
• transformation of electrical voltage from a given value to the desired value;
• protective;
• ensuring high-quality and efficient functioning of vehicle electronics;
• selectivity in the process of functioning, etc.