Replacing the heater motor Lada 2115 (VAZ 2115)

Important points

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

When removing the old motor, be sure to turn it. If this is not done, part of its fastening may break and get stuck in the torpedo, or more precisely, in the mounting bracket. And getting to the stuck fragment will not be so easy.
When tightening the mounting screws with a Phillips screwdriver, you should not use too much force: they are small, so the threads in their sockets can easily be stripped.

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

To force the air flow in the interior heating system, a fan driven by an electric motor is used. Thanks to this fan, the heater's operating efficiency increases.

Of the entire stove design, the fan is the most complex element, since it uses an electric motor. The electric motor itself is a direct current motor with excitation from permanent magnets. Despite its structural simplicity, the motor gradually wears out and stops working or functions incorrectly, which affects the performance of the interior heater.

Removing and replacing the electric motor

heat The electric motor is attached to the body of the heating unit using two screws. Having disassembled the connections with a Phillips screwdriver, it is necessary to disconnect the motor and heater and pull out the previously disconnected wires through the seal. You can remove the electric fan from the engine compartment as follows:

slightly raise the unit;
remove the front supporting surface from engagement with the heater body by moving the engine toward you;
turn the motor 90 degrees;
pull the structure out of the compartment.

“Experienced” recommend taking into account a different principle for dismantling the unit, which at the same time includes part of the measures for disassembling the product:

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

A complete replacement of only the heater fan on a VAZ 2114 is possible after disassembling the right half of the unit casing:

unfasten the two spring latches securing the cover relative to the casing;
remove the motor cover;
remove the electric motor and impeller assembly.

when replacing an assembled device, there is no need to 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 forbidden to remove the impeller from the shaft, especially a new electric motor, to avoid imbalance;
All work should be performed with the battery disconnected.

Before installing a new unit, it is necessary to clean the inlet duct of the heating system. Installation of a new product is carried out in the reverse order. Having placed the structure near the seat, you should glue a new foam seal along the contour in contact with the heating installation. Upon completion of work in the engine compartment, it is necessary to connect the unit to the on-board controller and it is advisable to replace the cabin filter.

How to remove the fan from the VAZ 2114 stove?

To do this, you need to know where exactly it is. The fan is placed in a special container, which is located in the hood of the vehicle near the windshield.

To remove the fan you will need an ordinary screwdriver and a basic set of keys. Let's take a look at the step-by-step removal of the fan:

1. You should find the plus wire of the equipment. Disconnect it;
2. Since the casing cover is secured with screws, remove them completely;
3. Remove the casing and unscrew the screws;
4. Unscrew the screws that secure the air intake grilles;
5. Remove the motor of the VAZ 2114; to do this you will have to move it slightly towards you and lift it;
6. After removing the motor, turn it 90 degrees. This is necessary to remove it from the casing and remove it.

As you can see, replacement is not such a difficult matter. Therefore, these works are easy to do yourself.

Replacing the heater motor on a VAZ 2114

When the heater in your car breaks down, there is nothing good about it. If the breakdown occurred in the warm season, it can hardly be considered critical. But if this happened in severe frost, things are bad for the car owner, since in winter he will not go far with a faulty heater. Most often, the stove on a VAZ 2114 stops heating due to a breakdown of the electric motor. Almost all car enthusiasts can replace a heater motor; the main thing is to learn how to do it quickly and correctly.

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 attached. This motor has three operating modes and is designed to supply warm air to three zones: on the windshield, on the passengers’ feet, or directly into the cabin.

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

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 of them:

When you try to turn on the stove, you cannot hear the hum of the motor, and this picture is observed at all three speeds.

The motor supplies air at all speeds, but operates intermittently.

The operation of the motor is stable, there are no interruptions in the supply of warm air, but instead of a uniform hum, extraneous sounds are heard, a grinding sound, which later develops into a piercing creak.

Instructions for replacing the VAZ 2114 stove motor

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

a new VAZ 2114 heater motor (and you must buy 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 sequence of actions below:

The hood of the car is opened, and the terminal with the minus sign is disconnected from the battery using a 10-mm open-end wrench.
In the cab of the car, under the dashboard, there is a power cord for the oven motor.
It is manually removed from the connector. The “positive” power cable for the motor is located in the cockpit, under the dashboard.
Now in the engine compartment, using an 8 mm open-end wrench, unscrew the 2 nuts holding the fan shroud.
There is also a nut with which the car's ground wire is attached to the casing. She also unscrews. Next to the casing nuts there is also a “ground” nut, which also unscrews.
Next, use a Phillips screwdriver to unscrew the additional fan mounting bolts.
An additional pair of mounting bolts is unscrewed with a Phillips screwdriver.
The air supply grille is released and removed, revealing access to the motor held on a special bracket.
When all the fasteners are unscrewed, the air intake grille is removed manually.
To remove the motor, first pull it towards you, then turn it 90 degrees, remove it from the mounting bracket and remove it from its normal place.
The electric motor of the heater is first pulled towards itself, and then turned at a right angle.
Now a new motor is installed in place of the burnt device, after which all components are reassembled.

Replacing the heater motor on a VAZ 2114

The problem of a non-working stove on the VAZ 2114 model occurs quite often. In most cases, the motor that is responsible for supplying warm air to the cabin fails. You can fix the problem without the help of car service specialists; just use the step-by-step repair instructions.

Location and principle of operation

On the latest VAZ models, the heater design is practically the same. The heater motor is located in the middle of the front dashboard; it operates in three modes. Using the regulator, you can select a specific heating zone - interior, windshield or feet. If the fan breaks down, the heated air remains near the radiator and does not go into the cabin. The efficiency of the heating system in this case drops to zero.

The stove motor operates in several modes

Main causes of malfunction

Most often, the system stops functioning normally for the following reasons:

Fuse F-7 with a voltage of 30-A does not work. The fuse is also responsible for the operation of the cigarette lighter, headlight washers, and lighting in the glove compartment, so it is not difficult to identify this malfunction.
Oxidation of contacts on the motor block.
The ignition relay is stuck. If the heater motor starts working only after the engine has warmed up, then the reason is a faulty relay.
Resistor failure. This element is responsible for the operation of the stove in different modes. If the motor turns on only in mode 3, then the resistor is faulty and needs to be replaced.
The heater motor itself burned out.

Advice: To determine the exact cause of poor stove performance, we recommend sequentially eliminating each of the above points.

Replacement instructions

If the motor starts to malfunction, then it is better to immediately replace it with a new one, since it is almost impossible to set it up for normal operation. We recommend purchasing the device from official stores, where they provide a quality guarantee. The average price for a motor is 500–600 rubles.

List of tools and consumables

Set of wrenches.
Crosshead screwdriver.
Fan or complete set with motor assembly.

How to replace

The entire repair will take you no more than an hour, we start by disconnecting the negative terminal of the battery.

We disconnect the positive power cable of the heater motor, which is located under the instrument panel.

Disconnect the power cord
We go into the engine compartment and remove the two bolts that secure the fan shroud.

Unscrew the bolts that hold the fan shroud
We unscrew the nut that presses the “ground” of the motor.
Unscrew the fan mounting screws.

Using a screwdriver, unscrew the two bolts
Remove the screws securing the air intake grille and pull it out.

We remove the grille after the two bolts have been unscrewed
We dismantle the motor in the casing by moving the housing towards itself and removing it from the hook.

Dismantling the heater motor
Rotate the device 90 degrees and pull it out of the casing. Now you can change the part.

Video on replacing the heater motor on a VAZ 2114

To quickly repair the stove, you need to determine the cause of the malfunction. If the engine runs intermittently, it is better to immediately replace it with a new one. Using a simple tool and step-by-step instructions, you will quickly replace the motor, saving on car service costs.

Operating principle of the heater

The heater itself does not produce heat. The heated coolant entering the heater radiator is used as its carrier. During the heat exchange process, the air inside the device heats up and begins to penetrate into the cabin through special pipes.

However, natural circulation is not enough to warm the interior of the car. The fan supplies warm air under pressure. It is thanks to him that the car interior warms up in a matter of minutes.

The VAZ-2114 stove fan is a conventional DC electric motor, powered by the vehicle’s on-board power supply. The air flow is created by the rotation of a cylindrical impeller mounted on the armature shaft.

The fan is controlled using a special switch located on the control panel. It has four positions corresponding to its operating modes: “OFF” mode and three speeds. The higher the speed of rotation of the impeller, the stronger the flow of air supplied to the cabin.

Fan disassembly

In the case where there is a motor with an impeller, we disassemble the fan housing. To do this, remove the foam seal from the outlet socket, then remove the housing clamps, after which it will split into two halves.

We extract the email. motor, for which we unfasten the spring clamps of the motor cover, remove this cover and remove the electric motor. the engine together with the impeller from half the housing. The electric motor is replaced only as an assembly with the impeller, and it is not recommended to disconnect them so as not to disturb the alignment. When assembling, be sure to stick a foam seal around the perimeter of the outlet socket, otherwise the air flow will dissipate due to the cracks, which will reduce the efficiency of the stove. If the electric motor of the stove made a strong squeal during operation, you don’t have to change the electric motor, just disassemble the fan and put grease in the bushings. But these measures will help eliminate the squealing for a short period of time and ultimately the stove motor will have to be replaced.

Replacing the radiator of the VAZ-2115 stove

Replacement is necessary when the heater radiator leaks or is clogged. If the radiator is clogged, you can blow it out with a Karcher, but keep in mind that it can deteriorate under high pressure.

How to disassemble the stove and remove the radiator

In order to remove the radiator, you must first drain the coolant and disassemble the dashboard. If the coolant is still good, it can be refilled again after replacing the failed elements.

To save time, you don’t have to remove the panel completely, but just do partial disassembly.

First way:

Initially, you will need to remove the console and glove compartment. To do this, unscrew the panel fasteners on the left side. Then pull the panel towards you and remove the radiator, but, most likely, you won’t be able to do this alone and you will need to turn to someone for help, since it’s more convenient to work together.

Second way:

Unscrew the panel fastenings on both sides and loosen the brackets coming from the floor (where the ECU is located), and also remove the glove compartment completely. Bend the panel and, with the help of an assistant, remove the radiator.

When you get to the heater core, disconnect the wiring harness from the heater motor. After which you will need to unscrew two fastening nuts on the right side and two nuts on the left. After this, loosen the clamps that hold the pipes and disconnect the radiator.

How to install a new stove radiator

Installation is carried out strictly in reverse order

It is also important, after a long service life, to simultaneously replace the clamps and pipes with new ones, preferably reinforced ones. Replacing hoses for VAZ-2115 stoves is also a very lengthy and painstaking procedure, since you will have to change all the elements, otherwise there will be little benefit from a partial replacement

Old hoses will fail over time and coolant may begin to leak.

The final assembly step is to install the dashboard and add coolant.

When all replacement steps have been completed, start the engine and check how the heating works, whether it heats up well and quickly. If there is no heat for a long time, then the air lock may not have been completely removed.

When does the heater fan need to be replaced?

This unit on a VAZ 2114 should be “sentenced” to replacement not only in case of its complete inaction, which is a consequence of:

short circuit of the armature winding to ground or its breakage;
collector wear;
brushes getting stuck.

An electric motor whose armature rotates quite slowly at any speed is also subject to inspection and quite possibly further disposal due to:

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

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

Causes of malfunction

Note that the reason that the fan does not turn on is problems with the power circuit. Oxidation of wiring contacts, blown fuse, faulty resistor - all this leads to the cessation of operation of the electric motor. Therefore, if it does not turn on, you should first check the power circuit components. Common problems with the fan motor are the occurrence of extraneous sounds during operation - squeals, rattling, interruptions in operation - spontaneous stopping, difficult starting, etc.

The reason for the appearance of third-party sounds:

Deterioration in the landing bushings into which the electric motor rotor is installed, lack of lubrication in them. Because of this, the rotor becomes loose during operation, which creates increased vibrations and rattling, and “dry” friction is accompanied by squealing.
Interruptions in operation are caused by critical wear of the graphite brushes and contact plates of the rotor. Because of this, the brushes and plates cannot make normal contact with each other, which leads to problems in the operation of the fan motor - it does not spin up when turned on and may stop spontaneously.

Troubleshooting the electric motor of the stove is a problematic process and not always advisable; it is easier to purchase a new fan and replace it.

Do-it-yourself replacement of the VAZ-2114 stove motor

To force the air flow in the interior heating system, a fan driven by an electric motor is used. Thanks to this fan, the heater's operating efficiency increases.

Causes of malfunction

The reason for the appearance of third-party sounds:

Deterioration in the landing bushings into which the electric motor rotor is installed, lack of lubrication in them. Because of this, the rotor becomes loose during operation, which creates increased vibrations and rattling, and “dry” friction is accompanied by squealing.
Interruptions in operation are caused by critical wear of the graphite brushes and contact plates of the rotor. Because of this, the brushes and plates cannot make normal contact with each other, which leads to problems in the operation of the fan motor - it does not spin up when turned on and may stop spontaneously.

Equipment operation mechanism

The fan regulates the flow of air that will circulate inside the car. It has several damper positions, which can be directed towards heating the feet, glass or the passenger part of the cabin.

1. To supply heat to the interior of the car, it is necessary to adjust the supply of thermal air by closing and opening the tap.
2. Through these actions, coolant enters the radiator, which contributes to the formation of heat. The stove operates at the maximum coolant level with a fully heated motor, which is about one hundred degrees.
3. When the stove switches to different speed modes, the fan speed is regulated.
4. In the car interior there are special partitions with the help of which you can determine the main root causes of failure of the VAZ 2114 stove.

In case of malfunctions, the cause should be sought in the following:

The fuse has failed;

The most pressing reason. A faulty fuse does not work properly, which can be the main reason for the breakdown of the entire heating system of the vehicle. Often the cause of a blown fuse is a short circuit. To determine this deficiency, you will have to fully understand the operation of the safety chain.

Poor contact in the inside of the mounting block;

Poor contact of the mounting block

The main cause of this malfunction is considered to be oxidized wiring. There is a solution to the problem: just reconsider the wires connected in front of the mounting block and replacement may be required.

The ignition relay has failed;

Occurs as a result of a stuck ignition relay. The trouble is revealed simply. In this case, the fan does not work properly and is noisy; its effectiveness is expressed only when the engine is fully warmed up. To eliminate this failure, it is necessary to replace the relay.

Inoperability of the stove speed modes;

It is detected when the fan is operating at maximum mode, which makes noise. In this case, it is necessary to evaluate the performance of the heating resistor. If it becomes unusable, replacement will help. This is the design of the heating system. In modes 1-2, the equipment operates using an additional resistor, and only mode 3 is switched on directly from the battery.

Replacing the heater motor on a VAZ 2114 video instructions

The main thing for passengers is that the car is warm and comfortable. These conditions can be created by the stove provided in the car mechanism. It will not allow passengers to freeze even in severe cold. The operating principle of the heating system in the VAZ is identical. The car and the interior of her car are heated using a stove. The stove operates with the help of a fan, which is located in the interior of the cabin. The fan is capable of operating in three-speed mode.

Equipment operation mechanism

The fan regulates the flow of air that will circulate inside the car. It has several damper positions, which can be directed towards heating the feet, glass or the passenger part of the cabin.

If the system does not work properly and is noisy, the heating process of the VAZ 2114 is reduced to zero. Warm air does not enter the cabin, as a result of which the car remains cold. This problem is especially noticeable in the cold season. In order to understand the reasons, you need to know how the operating mechanism of the heating system works:

1. To supply heat to the interior of the car, it is necessary to adjust the supply of thermal air by closing and opening the tap.
2. Through these actions, coolant enters the radiator, which contributes to the formation of heat. The stove operates at the maximum coolant level with a fully heated motor, which is about one hundred degrees.
3. When the stove switches to different speed modes, the fan speed is regulated.
4. In the car interior there are special partitions with the help of which you can determine the main root causes of failure of the VAZ 2114 stove.

In case of malfunctions, the cause should be sought in the following:

The fuse has failed;

Poor contact in the inside of the mounting block;

Poor contact of the mounting block

The ignition relay has failed;

Inoperability of the stove speed modes;

The fan motor is noisy and malfunctions

This indicates a problem in the VAZ 2114 fan cooling system, but provided that the above problems are corrected. The cause of a motor malfunction may be: equipment failure, or poor contact, which occurs as a result of sticking fan brushes;

The result of troubleshooting may be a complete replacement of the motor, which has repeatedly begun to fail you.

Problems lie in the operation of the power unit;

This may happen if there is no power to the motor. Problems should be looked for in the following:

1. Poor contact on the fan.
2. Motor brush sticking.
3. Motor performance.

When do you need to replace a VAZ 2114 motor?

The reason has been identified. All that remains is to act. Today the market provides a great variety of fans at your service. Their price depends not only on the manufacturer, but also on the quality characteristics.

Reviews from car owners indicate that fans purchased at an average price are the best option.

How to remove the fan from the VAZ 2114 stove?

To do this, you need to know where exactly it is. The fan is placed in a special container, which is located in the hood of the vehicle near the windshield.

To remove the fan you will need an ordinary screwdriver and a basic set of keys. Let's take a look at the step-by-step removal of the fan:

1. You should find the plus wire of the equipment. Disconnect it;
2. Since the casing cover is secured with screws, remove them completely;
3. Remove the casing and unscrew the screws;
4. Unscrew the screws that secure the air intake grilles;
5. Remove the motor of the VAZ 2114; to do this you will have to move it slightly towards you and lift it;
6. After removing the motor, turn it 90 degrees. This is necessary to remove it from the casing and remove it.

As you can see, replacement is not such a difficult matter. Therefore, these works are easy to do yourself.

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.

Cause

It is important to know

The fuse F7 with a voltage of 30A is responsible for the stove. Replacing it is not difficult, but the main problem lies in the possible occurrence of a short circuit. This fuse is responsible for the lighting in the glove compartment, headlight washers, cigarette lighter, and heated mirrors. If it malfunctions, all specified devices will stop working.

There is no contact in the mounting block

This is a common problem in cars and occurs as a result of contact oxidation or loss of connection strength.

Ignition relay sticks

The heater turns on only after the car has warmed up. Therefore, it is recommended to check the condition of the ignition relay if the fan is not working. Replace relay if necessary

The heater only turns on at speed 3

Speeds 1 and 2 are activated by an additional resistor, and in mode 3 the current goes directly to the motor. In this situation, you should replace the additional resistor or check its contacts

The heater switch is broken

Here we are talking about problems with the electrical target or fuse. To check their condition, you can use a test lamp

Problems in motor design

If everything is fine with the switch and current, but the fan does not respond, you should check the level of overheating of the motor, its ground contacts or brushes for sticking

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.

How to remove the VAZ 2115 stove fan: video instructions

One of the most common problems with a car heater is the failure of the fan that supplies warm air to the cabin. To eliminate it, many car enthusiasts turn to car service specialists. We propose to minimize costs and perform such a procedure as replacing the heater motor of a VAZ-2115 car with your own hands. Detailed step-by-step instructions, which can be found below, will help you with this.

Why does the heater motor fail?

Is it possible to do without replacing this part and try to restore its functionality on your own? Theoretically, yes. But in reality this happens quite rarely, since setting up a fan is a difficult task even for experienced craftsmen.

Where is the VAZ-2115 knock sensor located?

The main reasons why the stove motor malfunctions are:

fuse burnt out. This breakdown is not difficult to perform, since the safety element also protects the cigarette lighter, glove compartment light and headlight washer from short circuits. Of course, if it malfunctions, this equipment will also not work;

failure of the fan winding;

problems with the ignition relay. If warm air begins to enter the cabin only after the engine has warmed up, then the problem is in this part;

failure of the resistor, which allows you to configure the heater to operate in several modes;

The contacts on the motor block are oxidized.

Step-by-step replacement process

Open the hood and disconnect the negative terminal of the battery.
Behind the engine shield, unscrew the four screws securing the fan casing and remove it. Phillips head screws.

After removing the casing, remove the two screws that hold the fan housing in place.

Using a slotted screwdriver, open the latches and separate the plastic fan housing into two halves.

Disconnect the heater motor power supply terminal (it is located above the gas pedal).

Unscrew the nut by ten and remove the ground terminal of the heater motor (the terminal is located above the gas pedal).

After removing the wires, remove the fan along with the motor.

Unscrew the two screws and you will be able to remove the plastic casing.

After completing the above operations, the fan and motor are free. We take a new fan and reassemble it.

The process of replacing the VAZ 2113, 2114, 2115 stove fan is clearly shown in this video:

Replacing the stove fan VAZ 2113, 2114, 2115

The VAZ 2114 stove fan is designed to force air into the interior heating radiator. After the air passes through the radiator honeycombs, it becomes warm and enters the car interior through the air ducts. If the fan fails, the entire heating system stops working correctly and its efficiency is zero.

In this article, we will analyze the process of replacing the VAZ 2114 stove fan, list the tools for the job, and also talk about choosing a fan and the reasons for the breakdown.

Causes of failure

There may be several reasons for the malfunction:

The most common problem with a fan not working is a blown fuse. The fuse in the block should be marked F7 (20A). In addition to the stove fan, it is responsible for the cigarette lighter, heated mirrors and glove compartment lighting.

Fan selection

The original stove fan recommended by the manufacturer comes with a catalog number - 2108-8101078. It is produced in Russia and costs 1900 rubles. You can also buy analogues. These are fans from the manufacturers Fenox (HM81002) and Master-sport (2108-8101078-PCS-MS). Their prices are within 1500 rubles.

Tools for work:

open-end wrench for ten;
crosshead screwdriver.

Step-by-step replacement process

Open the hood and disconnect the negative terminal of the battery.
Behind the engine shield, unscrew the four screws securing the fan casing and remove it. Phillips head screws.

After removing the casing, remove the two screws that hold the fan housing in place.

Using a slotted screwdriver, open the latches and separate the plastic fan housing into two halves.

Disconnect the heater motor power supply terminal (it is located above the gas pedal).

Unscrew the nut by ten and remove the ground terminal of the heater motor (the terminal is located above the gas pedal).

After removing the wires, remove the fan along with the motor.

Unscrew the two screws and you will be able to remove the plastic casing.

After completing the above operations, the fan and motor are free. We take a new fan and reassemble it.

The process of replacing the VAZ 2113, 2114, 2115 stove fan is clearly shown in this video:

Let's summarize

As you can see, the process of replacing a fan is simple and will not present any difficulties for a driver who has held a tool in his hands at least once in his life. An independent replacement takes no more than twenty minutes of time, and the price of replacing a VAZ 2114 stove fan at a service station ranges from 200 to 500 rubles.

How to diagnose the performance of the VAZ-2115 heater

Turn on switch 1 first, then second and third speeds.
Using levers 2 and 4, you can adjust the desired direction of the air flow, and the latter also makes it possible to select the desired temperature.

The reasons for the breakdown may be different:

A faulty fan means the stove does not work at all.
If the radiator still shows signs of life, then the breakdown may be a failure of the additional resistor or the interior heater does not respond to switch commands.
But the stove tap can also leak or become stuck, in which case it must be urgently replaced.
When the fan is running at full power and the temperature is at maximum, and the engine is warm, then perhaps the heater radiator is clogged. To clean or replace it, you will need to disassemble it.

How to independently remove and replace the stove on a VAZ-2115

20.02.2017

Heater malfunctions in any car cause a lot of trouble. It is especially difficult to correct the situation when the problem has already started and coolant has leaked.

Replacing a heater on a car is not an easy task, since in order to get to it, you will have to disassemble half the car and it will take a lot of time. Unfortunately, not everyone knows how to remove and replace the stove on a VAZ-2115, and therefore they turn to a car service center.

But you shouldn’t rush to give your car into the wrong hands because of this procedure alone, because:

Work to replace components costs about 1500–2000 rubles.
It’s not a fact that they will do everything efficiently.
Very often, car service workers treat their work anyhow and can break something when dismantling the panel.

The device of the VAZ-2115 stove

The VAZ-2115 and VAZ-2114 have the same heating systems; using the diagram below you can clearly see its structure.

44 — fan motor; 45 - additional resistance resistor; 46 - speed switch.

How to diagnose the performance of the VAZ-2115 heater

Turn on switch 1 first, then second and third speeds.
Using levers 2 and 4, you can adjust the desired direction of the air flow, and the latter also makes it possible to select the desired temperature.

The reasons for the breakdown may be different:

A faulty fan means the stove does not work at all.
If the radiator still shows signs of life, then the breakdown may be a failure of the additional resistor or the interior heater does not respond to switch commands.
But the stove tap can also leak or become stuck, in which case it must be urgently replaced.
When the fan is running at full power and the temperature is at maximum, and the engine is warm, then perhaps the heater radiator is clogged. To clean or replace it, you will need to disassemble it.

Replacing the radiator of the VAZ-2115 stove

Replacement is necessary when the heater radiator leaks or is clogged. If the radiator is clogged, you can blow it out with a Karcher, but keep in mind that it can deteriorate under high pressure.

How to disassemble the stove and remove the radiator

In order to remove the radiator, you must first drain the coolant and disassemble the dashboard. If the coolant is still good, it can be refilled again after replacing the failed elements.

To save time, you don’t have to remove the panel completely, but just do partial disassembly.

How to replace a fan

On a VAZ-2114, replacing the heater fan will not cause any difficulties. Especially if you have already dismantled the faulty device. The first thing you need to do is check the fan. To do this, place it on a flat surface and connect two wires from the battery to the connector. Has the electric motor started? Then connect the device to the “native” connector of the wires going into the engine compartment from the passenger compartment. Turn on the ignition, and then the mode switch. Check that the fan works in all its positions. After this, place the electric motor in its place and close the casing. Screw the casing to the heater body. Connect the power wires. Additionally, check the operation of the device.

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Reasons why the VAZ 2114, 2115, 2113 heater motor does not work.

The reasons why a fresh flow of cold air in summer or a hot stream in winter does not come from the air ducts of your VAZ 2113, 2114, 2115 can be of two types:

mechanical
electric

Let's look at them in more detail.

Mechanical reasons why the VAZ 2114, 2115, 2113 heater fan does not work.

First of all, mechanical reasons include clogging of the air duct.

As you can see in the photo, leaves, branches and other debris get under the casing and clog the air duct of the heater motor. Debris can get into the section with the blades itself and jam the stove fan. Usually before this, a whistle or grinding noise is heard from under the soot space.

Mechanical reasons for the inoperability of the stove motor include jamming of the blades due to improper installation of the stove fan housing. When removing the stove motor, the latches securing the two parts of the housing are often damaged. And if these parts are not firmly fixed to each other, then there will be a gap between them and the air flow that should go into the cabin will fall into this gap. Also, parts of the housing may generally jam the motor blades, then it will not spin at all.

Fuse.

Let's follow the scheme given at the beginning of the post. If your heater fan does not work together with the heated rear window, then the problem is 100% in the fuse. Check fuse f7 in the mounting block, if it is ok, then use a multimeter to see if the plus is coming to it from the ignition switch unloading relay. To do this, with the ignition on, place one multimeter probe on the fuse and the other on the car body. If everything is in order, look at the circuit from the fuse to the speed switch and the heating switch.

Heater fan speed switch.

We figured out the fuse - let's move on. And then we have the stove motor speed switch. To check it, remove the connector from it. The connector has three inputs nearby and one is located, as if separately from them. We connect any of these three inputs with a wire to the one that stands separately. If the motor starts working, then the speed switch is to blame; if not, we move on.

Additional resistors.

If the fan works, but only at the third (fastest) speed, then the additional resistors are to blame. In the third mode, power is supplied directly to the fan, bypassing additional resistors, so it does not work in other modes.

Heater motor VAZ 2114, 2115, 2113.

If checking all the components listed above shows they are working, the reason is in the stove motor itself. Most likely it is burned out or has a bad mass. To check, remove it and connect it directly to the battery (the black wire screwed to the body is a minus). If it works, it's a bad mass. If it doesn't work, we change the motor.

Repair of VAZ 2113—2115 stove fan

Why does the heater motor stop working? There are reasons for this, and there are several of them. However, most often the cause of malfunction is clogging. Dust gets everywhere, including inside the mechanism.

Cleaning the stove fan in some cases helps to improve the operation of the mechanism

Causes and signs of heater motor failure

With the onset of cold weather, correct and uninterrupted operation of the heater becomes more important. But according to the law of meanness, it is precisely at this time that frequent problems are observed that have their own reasons:

The safety element fails, designed to monitor not only the heater along with its components, but also the glove compartment lighting, the optics washer motor, etc.

Fuse F7 in the VAZ 2113 mounting block

The ignition relay is located under the instrument panel. It can also cause problems with the stove motor, as it is connected to the electrical circuit. You can make sure that it is a relay by the following sign: the fan does not work only when the engine is warm (more details about the relay are written at the end).

The stove radiator deteriorates and scale forms in it over time. The element can be removed and washed with “Mole” or other liquids.
The radiator of the VAZ 2115 stove deteriorates due to scale formation

Air enters the system, forming plugs. This negatively affects the overall operation of the stove, including the motor. Proper airing of the entire system will help.

The additional resistor is faulty. If this part is the “culprit”, electricity will begin to flow to the motor only in the third position of the heater operation.
Accordingly, in the first and second modes the fan will not turn on, since the current in this case flows through the resistor. The problem is solved by replacing the resistor. If there is a malfunction, the additional heater resistor must be replaced

The contacts of the wiring terminals connecting the fan to the car's electrical system have become loose. You need to re-tighten them, and if they have oxidized, clean them.

How to remove the fan

The VAZ 2113-2115 heater motor is removed as follows:

First remove the side cover of the dashboard from the pedal side.

The side casing cover can be removed to facilitate the process of removing the fan.

Then the electrical contact is disconnected from under the dashboard - a transition device between the car's electrical system and the motor.

The positive wire plug connects the fan to the car's electrical system.

The “ground” located on the bolt under the head “10” is also unscrewed.

The negative wire of the fan is connected to the mounting bolt on the body

After this, you need to transfer the work to the engine compartment:

Unscrew the protective cover hiding the motor.
Then remove the screws holding it in place.

The fan clamps are simply unscrewed with a screwdriver

Wires disconnected inside the car should be pulled up.

After this, you need to remove the top cover of the motor to make it easier to remove.
The top fan cover can be removed in place to make motor removal easier.

Pull by hand to remove the fan.

How is the replacement carried out?

Before direct replacement, it is recommended to check the motor, because it may not work:

Place the fan on a flat surface.
Connect the wires to the battery terminals.

A faulty element will not rotate at all or will do so intermittently, weakly and noisily. Before work, you must also remember to thoroughly clean all debris from the niche where the new motor will be installed. The replacement procedure does not take more than 40 minutes for an experienced motorist. All you need is a screwdriver, wrenches and a new fan. The activity is performed in reverse to the withdrawal process. The wiring terminals must be securely secured so that they do not loosen while the machine is moving.

It is recommended to select a completely new and high-quality motor (original production) as a replacement in order to protect yourself from unnecessary costs. A good fan will last for a long time.

Where is the VAZ 2113-2115 heater relay located?

Not all motorists who decide to carry out repairs and replacements themselves can quickly find a faulty stove. The relay is responsible for sufficient heating of the interior, so a motor malfunction may be associated with it.

Often this element simply wears out. This is not a repairable part, it only requires replacement. Therefore, it is important to know where the relay is located in order to replace it yourself in a timely manner. The element is located on the center console under the instrument panel, often in the mounting block, next to the fuse.

The VAZ 2113-2115 heater relay is located near the fuses

The heater motor is an important and indispensable element of the car heating system. Periodic maintenance and timely replacement of faulty parts will always help keep the car interior warm.

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

A failed stove fuse is one of the most common, and at the same time easy to repair faults.

The fourteenth is equipped with a heater fuse of type F7, with a current strength of 30 A. It is worth noting that a failed heater fuse will also cause the cigarette lighter, glove compartment lighting, electric water supply pump to clean the headlights, and rear window heating to fail, since all these systems operate from one fuse.

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

Lack of contact inside the mounting block

Also a fairly common problem, the cause of which is the oxidation of wires during operation. The solution is quite simple; you need to sort out the wiring in the block in which they are fastened in front of the mounting block, and, if necessary, replace the contact group.

A stuck ignition relay can also be the reason why the heater fan on a VAZ 2114 does not work. This is revealed quite simply - if the fan starts working only when the car’s engine has completely warmed up, then the problem is due to the ignition relay. To eliminate them, you will need 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 resistor needs to be changed. The design features of the heating system are such that in speed modes 1 and 2 the fan is powered through an additional resistor, and in mode 3 - directly from the battery.

Fan motor problems

If the VAZ 2114 cooling fan does not work, but all of the above problems have been eliminated, then one reason remains - a failed VAZ 2114 heater motor. It can either burn out or have poor contact with the power supply due to loose mass, and the fan brushes also often get stuck.

You will need to replace the heater motor with a new one, because if it starts to “stand out”, then this will happen repeatedly in the future.

Replacement

Replacing a failed unit is not difficult. Follow certain rules and sequence of your actions to achieve the desired result.

Disconnect the negative terminal from the battery.
Lift the hood and in the engine compartment, remove all the mounting bolts that hold the plastic trim.
For now, the overlay can be moved to the side so that it does not interfere with work.
Remove the rubber seal, which also has its place in the engine compartment.
Remove the protective cover from your heater motor. So you have reached the desired object and can begin replacing.
On the sides of the motor are two bolts that hold your fan in place.
Now go into the interior and remove the driver's side panel. There is a positive plug located there, which must be disconnected.
Next, look for the negative wire. It is held on by one nut, which must be unscrewed.
The disconnected wires are inserted into the hole in the body of your car, passing through the rubber seal.
Remove the damaged motor. To do this, you need to turn it and pull it out through the right side.

As you can see, removing the device is not difficult. Having studied the condition of the fan motor, we can draw a conclusion regarding the need to replace it. Sometimes car owners get by with simply repairing brushes or replacing fuses.