Replacing the priora heater fan resistor

I myself encountered such a problem when the stove in positions 1,2,3 did not blow at all, it only worked in position 4, the stove resistor is to blame for this. I went to the car market and bought it, it costs only 200 rubles, I replaced it and the stove became work as it should in all positions!

In order to replace the resistor you need to: 1) Disconnect the wire from the negative terminal of the battery. 2)Remove the right windshield frame trim. 3) Disconnect the block with wires from the resistor terminals 4) Remove the fastening screw... 5) and remove the non-working heater resistor. 6) put a new resistor in the same place!

Problems with the heater can be of various types. We will not list and analyze all of them, since we are only interested in those that are caused by the stove resistor on the Priora. By the way, this part is often called a rheostat.

It is easy to understand that the malfunction lies precisely in this mechanism. The stove begins to function only at one speed or one of the speeds has stopped functioning. If one of these situations occurs, you can immediately conclude that the rheostat has failed.

Replacing the heating gear motor on a Lada Priora

First of all, it should be said that replacing the gearmotor on a Priora with and without air conditioning is done in the same way, since the gearbox is located quite far from this device. It should also be noted that today there are several known ways to remove the gearmotor from a Priora. One of them involves removing only the trapezoid along with the wipers and expansion tank, the second allows you to get by with removing only the tank. But to use these methods, the driver must have extensive experience in self-repair, otherwise problems are inevitable. Therefore, the third method will be discussed below, with the complete removal of all necessary parts. Yes, it will take more time from the car owner, but it is almost impossible to break anything. Now it's time to decide on the tools. Here's what we need:

new gear motor for Priora;
2 screwdrivers - flat and Phillips.

Sequence of work

First you will need to perform a few simple preparatory steps. It is necessary to disconnect the throttle valve assembly and move it slightly to the side.

To get to the Priora gearbox, the sound insulation will have to be removed

Then use a Phillips screwdriver to unscrew the screws holding the sound-insulating material.

There is a wiring harness next to the gearmotor. It is mounted on plastic holders that open manually. The tourniquet is pulled aside.

The wiring harness is mounted on two plastic holders that can be opened manually

The heater is held on by three screws. It only needs to be moved a few centimeters

You need very long fingers to reach the block on the damper sensor.

To open the spring lock, you will have to move it down a couple of centimeters

The gearmotor is held on by only three self-tapping screws, unscrewed with a Phillips screwdriver

The gearmotor, freed from the fasteners, is carefully removed from the niche

One mechanic I knew used a very original device to remove the gear motor - an ordinary one and a half liter plastic bottle. This bottle was cut obliquely so that it looked like a semicircular scoop. This thing was carefully slipped under the gear motor, and only after that the fastening screws were unscrewed. When I asked why such complications were needed, the answer was: so that the screws do not fall into the engine. Taking a closer look, I realized that this solution makes sense: if the unscrewing screw accidentally falls into the engine pan, it will be almost impossible to get it out of there.

Replacement: how to remove (change) the stove on a Priora with and without air conditioning

Replacing a stove completely is rarely done; components are mostly changed. Often the main reason for disassembling the heater on a Priora car is replacing the heater radiator. When it ceases to be airtight and no longer works as efficiently, it is necessary to begin repairs. In order to remove the heater on a Priora car without air conditioning, you will need a set of wrenches (socket and socket wrenches) and a Phillips screwdriver. As the system is disassembled, it is worth inspecting all parts and replacing worn ones. Perform the work according to the instructions:

Remove the negative from the battery.
Remove the lower windshield seals and engine sound insulation.
Loosen the clamps that hold the pipes adjacent to the heater core, and then disconnect them. First place a basin under the pipes to drain the coolant. After the liquid has poured out, cover the pipes with a rag.
Start wiring. Unclip the latch and disconnect the motor wires. Then de-energize the additional resistor.
The wires that go to the damper drive motor are secured with a clamp. You need to bite it and then disconnect the wire.
Next, we proceed to dismantling the heater itself. Take a “ten” socket wrench, remove three screws with it, and remove another screw with an “8” wrench.
Next, move the wiring harness from the heater to the side (attached to a small bracket).
Now, from the passenger compartment under the dashboard, unscrew the third nuts securing the brake pedal with the “13” key, and then move it to the side.
Pull the block towards you.
Install a new heater instead of the old one if necessary.
When you are concerned that the heating is not blowing correctly - not in the required mode - you will have to check everything again during dismantling.
To remove the heater on a car with air conditioning, follow these steps:
Also remove the negative terminal, then the lower windshield seal, and the engine sound insulation.
Unscrew the screws covering the heater radiator.
Also carefully remove the pipes: the coolant must be drained into a prepared basin.
Slowly and smoothly pull the radiator up until it comes out of the mounts.
Install the new radiator in the reverse order.

Lada Priora has Panasonic or Halla air conditioners. They differ only in the fastening, so there will be no difficulties when replacing the heater radiator.

Replacement steps

This task is not difficult, but painstaking and difficult for absolute beginners. To avoid any difficulties, you must strictly follow the work plan described below.

Disconnecting the “−” terminal of the battery and the wire.
Dismantling the frill.
Disconnecting the block with wires from the connector on the additional rheostat.
Removing the fasteners on the resistor using a Phillips screwdriver of the appropriate size.
Removing a faulty mechanism on the heater.
Installing a working mechanism according to the same scheme, but in reverse order.

Dismantling the frill

This process is listed as one of the stages of work to replace the stove on Priora. It will not be possible to bypass it, especially since the frill will have to be removed when solving many problems with the heater. Even a basic filter replacement will require dismantling the windshield trim, also called a frill. To implement this task, you will need a thirteenth head, a screwdriver with a flat and Phillips head, and a marker. Further work will proceed according to the following scenario:

We remove the windshield wiper blades.
Using a marker, we make marks on the windshield that will indicate the location of the blades.
We take out the decorative caps, which you just need to pry off with a screwdriver.
Using a socket, unscrew the fastening nuts from the brush lever.
It is convenient to remove the washers using tweezers.
We remove the lever and brush from the shaft.
We open the hood to carry out dismantling work regarding the seal, which is located on the edge of the front panel upholstery.
We unscrew the fastening on the facings, dashboard upholstery, wind window trim.

Our story can be completed here, because now you know where the heater resistor is located on a Priora, how to get to it and install a new part instead of the faulty one. Turning to specialists loses all meaning.

As you know, in the winter season, the operation of a car’s heater largely determines driving comfort. But sometimes it happens that the device simply refuses to work, and this problem especially often occurs in domestic cars. Read more about how to replace the heater radiator on a Lada Priora car below.

Replacing the radiator of the Priora stove

To work, you will need a standard set of tools, which includes socket wrenches 10 and 13, side cutters, a Phillips screwdriver, and a wrench 8. In both cases, you will have to disconnect the heating system hoses; the remaining coolant will pour out of them, so immediately place containers under the pipes heater Then the liquid can be returned to the system.

With air conditioning

First of all, we need to remove the rubber seal of the windshield to gain access to the parts;

As you can see, dismantling the radiator in a Priora with air conditioning does not require draining the antifreeze. Coolant will only come out of the expansion tank and the heat exchanger itself. Removing the radiator in a VAZ 2170 with Panasonic air conditioning follows the same scheme, only a few fasteners may differ. Now you can replace your worn-out heater with a new one!

Without air conditioning

Work begins by disconnecting the negative terminal of the battery. We remove the windshield trim along with the windshield wiper arms, as these elements will interfere with operation;
The next step is to remove the coolant supply pipes to the engine injectors;
The windshield trim is held in place by seven screws. Unscrew it to completely remove the element;
Now we move on to the hood seal, in its center you will find a tightening screw - unscrew it;
The engine noise insulation closes the passage to the heater system - pry up the plugs with a flat screwdriver and unscrew the plugs;
We unscrew the screws and dismantle the sound insulation. Remove both covers;

Video instructions for replacing a leaking stove:

Priora instrument panel: indicator designations, error interpretation
Do-it-yourself PTF Priora installation
Signs of malfunction, replacing the speed sensor on a Priora

Enter the text of the comment: the climate control does not work, not old, not new, the heater damper opens and closes all the way to the MMR, I change it every year in the spring, the damper does not close, I have to remove the MMR in the fall, everything is new on the computer, the regulator works

I unscrewed the 4 screws that hold the plastic plate near the heater radiator pipes, but for some reason it does not come out of the heater. Priora with Panasonic. I would be grateful if you could tell me.

Replacing the resistor of the Priora stove

Individual design of the heater fan electric motor (VAZ) of the stove 2170 2171 2172 Priora. An electric heater fan motor with excitation from constant magnets is installed on the frame. To obtain different frequency rotation values, an additional resistor is installed in the power supply circuit of the electric motor.

It includes three spirals and Pri. fuse for the passage of current through all three spirals is ensured by the 1st speed of rotation of the fan through, the heater two spirals 2nd speed, through the 3rd speed one. When the electric motor is turned on without an additional resistor, the armature of the fan motor rotates at the 4th highest speed. If the electric motor fails, replace it with a new one. The only possible repair is to clean the electric motor and the commutator. P 1 Possible malfunctions of the fan of the electric motor of the heater (stove) VAZ 2170 2172 2171 Priora, their prerequisites and methods of elimination.

You will need flat-blade and Phillips-blade screwdrivers. 1. Disconnect the wire from the negative terminal of the battery. 2.

heater Remove (see Removing and installing the heater radiator). 3. hose Remove the ventilation of the brush assembly of the electric motor. Unscrew it.

4. fan three screws securing it 5. And remove the fan motor from its housing. Notes This is how the electric motor looks when assembled with an impeller. If the electric motor or impeller malfunctions, the entire assembly must be replaced, because attempting to remove the shaft from the electric motor and impeller will lead to its breakdown. Without the help of others, it is impossible to balance the impeller.

Dismantling and replacing the heater on a Priora

Any car should provide its owner with comfort while driving. Otherwise, using a personal vehicle loses all meaning. A large share of responsibility for the comfort of the driver and passengers lies with the stove. If in summer you can do without using a heater, then in winter it becomes completely unbearable to travel in cold transport. So drivers are interested in how to remove the stove on a Priora in order to carry out maintenance, repairs, or even replace it with a new one. There is no point in turning to specialists to do this work, since everything is done according to a simple scheme.

Before changing the stove on a Priora, buy new heater elements using the catalog numbers:

Priora heater 2111-8101012: 1 — heater inlet/outlet hoses 2170-8101200/208; 2 — additional resistor 2123-8118022; 3 — electric fan 2111-8118020; 4 — heater 2111-8101012; 5 — nut 1/07259/11; 6 - screw 1/51873/01

Priora heater parts: 1 - screw 1/76691/01; 2 — heater radiator 2110-8101060; 3 — left heater casing 2111-8101025; 4 — heater control damper 2110-8101538; 5 — right heater casing 2111-8101024; 6 — air duct housing 2111-8119124 intermediate; 7 — screw 1/76692/01; 8 — lower air intake housing 2111-8119026; 9 — bracket 2108-8101110; 10 — bracket 2111-8119102 right; 11 — screw 2114-5325388; 12 — air filter 2111-8122020; 13 — upper air intake housing 2111-8119025; 14 — filter cover 2111-8119116; 15 — screw 1/76702/01; 16 — screw 1/76691/01; 17 — additional resistor 2123-8118022; 18 — screw 2123-6302332; 19 — screw 2114-5325388; 20 — air supply pipe 2123-8118096; 21 — electric fan 2111-8118020 of the heater; 22 — bracket 2108-8101110; 23 — gear motor 2110-8127200 for the heater damper; 24 - screw 1/76691/01

By the way, do you know that the Lada Priora is also equipped with air conditioners (HALLA and Panasonic), so the process of replacing the Priora heater may be slightly different. For example, in order to replace the heater radiator on a Priora with HALLA air conditioning, it is not at all necessary to dismantle the heater assembly.

A car of this brand is equipped with a liquid-based stove, which is combined with the cooling system of the power unit. It includes:

The heat exchange device is represented by a radiator, through which the external air entering the cabin is heated;
A fan driven by an electric motor promotes air circulation in the cabin;
Damper that regulates the flow of incoming cold air;

Dampers that regulate and distribute the flow of incoming warm air into the cabin.

The interior heating device in question is installed in the engine compartment of the car, so there is some work to be done to get to it.

Features of the Priora stove

The climate control of this car on some versions is designed for the installation of air conditioning. Therefore, the design of this device in this case is slightly different than that of the VAZ-2110 heater. This article discusses the standard heater option. Although they have a lot in common. The Priora stove (heater without air conditioning) includes the following large components:

Stove body.
Air duct system.
Heater electronic control unit (ECU) with control console.

These are, so to speak, three basic nodes. All of them, except the ECU, are disassembled and consist of various subsystems. To be honest, the control unit can also be disassembled if desired. But you shouldn't do this. This is a delicate electronic device and can only be repaired by a specialist. But with the other two there are options.

Frame

After the control unit, the stove body is the most complex object. The fact is that it includes several elements:

Housing consisting of two parts.
Blower electric motor with fan.
Small heating radiator with pipes.
Variable resistor.
Heater air damper.
Micromotor gearbox, heater damper drive.
Cabin filter.

All of the listed elements sometimes fail, and it is quite possible to replace them yourself, without resorting to the services of a specialist.

Location and access

As on the VAZ 2110 model and modifications, the heater is located outside the passenger compartment. It is located in the engine compartment. Right under the windshield. It is separated from the engine by a special fabric and cardboard partition. And the top is covered with a plastic double casing, which hides this compartment, in which, in addition to the heater, a brake vacuum and a windshield wiper drive are also installed.

To gain access to the Priora stove, these elements must be dismantled. Disconnect the cooling system hoses. Unscrew the 3 fastening nuts and remove the housing. This process is described many times and shown in the attached video. Therefore it is not worth repeating here.

Cabin filter

Most often, it is this part that fails or exhausts its resource. It simply gets clogged with dirt and dust. This is expressed in a decrease in the intensity of fan operation. Sometimes, it becomes so dirty that the heater fuse blows. The load on the electric motor increases so much that the fuse simply blows. The purifier is located at the air inlet into the heater. Near the right wing of the car. It is closed with a decorative plastic cover.

Electric stove motor

To remove and replace the electric motor of the stove, on a Priora without air conditioning, you have to completely dismantle the heater. Or at least push it forward a little. The fact is that this motor is located on top of the Priora stove and is located under the supporting part of the windshield.

Heater resistor

This element serves as a kind of fan rotation speed switch. It has several resistance levels. Each step is speed. A faulty resistor is easy to determine. If none of the speeds except the maximum one work, then in 99 cases out of 100, it is the resistor. And only 1 switch, in the control unit.

Substitution stages

This puzzle is easy, but thorough and challenging for absolute beginners. To avoid any difficulties, you need to strictly follow the work plan described below.

Disconnecting the “−” terminal of the battery and wires.
Dismantling the frill.
Disconnecting the block with wires from the connector on the additional rheostat.
Removing the fasteners on the resistor using a Phillips screwdriver of the appropriate size.
Removing a faulty mechanism on the heater.
Installation of a working mechanism according to the same scheme given to us, but in reverse order.

Dismantling the frill

This process is listed as one of the steps of work to replace the stove on Priora. It will not be possible to bypass it, especially since the frill will have to be removed when solving almost all problems with the heater. Even a simple filter replacement will require dismantling the lining from the windshield, which is also called a frill. To implement this task for us, we will need the thirteenth head, a screwdriver with a flat and Phillips head, and a marker. Subsequent work will occur according to the following scenario:

We remove the windshield wiper blades.
Using a marker, we make marks on the windshield that will show the placement of the blades.
We take out the decorative caps, which can be easily pryed off with a screwdriver.
Using a socket, unscrew the fastening nuts from the brush lever.
It is convenient to remove the washers using tweezers.
We remove the lever and brush from the shaft.
We open the hood to carry out dismantling work regarding the seal, which is located on the edge of the front panel upholstery.
We unscrew the fastening on the facings, dashboard upholstery, wind window trim.

Our story can be completed here, since now you understand where the heater resistor is located on the Priora, how to get to it and install the new part instead of the faulty one. An appeal to specialists loses all meaning.

Source: remam.ru

Symptoms of a problem

The Lada 2170 model received a liquid heater, which is connected to the engine cooling system. The radiator is a heat exchange device; due to this component, the air entering the Priora’s cabin is heated. Coolant constantly circulates through the radiator; this part of the heater is subject to wear.

It is worth checking the radiator in the following cases:

The stove stopped heating properly.
The coolant level drops.

Once you disassemble part of the heater system, you will see a rusty and most likely leaking radiator. There may also be leaks in hoses, pipes and the junctions of these elements. You should check the heat exchanger of the stove only after you have made sure that there are no defects in the operation of the gearmotor and damper.

Location and purpose of the resistor

In order to successfully replace the Priora stove resistor, you need to know where this part is located. Experienced drivers who have encountered problems with their heating system more than once may smile when reading these lines. But for inexperienced car owners, this question is relevant.

You can find the rheostat under the frill if you have a car without air conditioning. In models with air conditioning, this mechanism has a slightly different appearance and is located in a different location. For example, in cars with Panasonic climate control equipment you can find the rheostat under the left wiper.

The functioning of the rheostat is to ensure the normal functioning of the heater speeds. It is characterized by electrical resistance, which determines the rate of conversion of electromagnetic energy into thermal energy. An additional resistor for the Priora heater, or an additional one, as well as a rheostat - this is all the same element, which we will simply call a resistor.

Placement and purpose of the resistor

In order to successfully replace the resistor of the Priora stove, you need to know where this part is located. Experienced drivers who have repeatedly encountered problems with the heating system may smile when reading these lines. But for inexperienced car owners, this question is burning.

The function of the rheostat is to ensure the normal functioning of the heater speeds. It is typically characterized by electronic resistance, which describes the rate of transformation of electromagnetic energy into thermal energy. An additional resistor for the Priora heater, or an additional one, or a rheostat - this is all the same element, which we will simply call a resistor.

Operating principle of the stove

Heater control panel on Priora

The air conditioning system may stop blowing for various reasons. If the heater blows cold air, and the car is without air conditioning, the driver will have to disassemble and replace some elements. This could be a malfunctioning control regulator, fan, heater valve, or other heating system component. In any case, first, let's understand the principle of operation.

The warm air flow is forced onto the device's radiator thanks to the fan. The speed of the latter varies depending on the temperature inside the car. The ratio of warm and cold air flows is regulated thanks to the valve. The air flow enters directly into the car interior through a filter element designed to clean the air. In the cabin, the car owner already chooses how the airflow will be carried out by adjusting the position of the dampers on the center console.

The Priora heater control unit is the main structural part; it is its regulator that is controlled by the driver. The stove control unit, by adjusting and analyzing all the necessary parameters, adjusts the stove motor so that it regulates the speed of the fan, as well as the position of the air damper.

Heating device radiator

Repair of heater resistor Lada Priora

If the stove fan does not work in one of the positions or only works in the fourth, and the fuse is in good condition, then you need to check the additional resistor. Before removing the resistor, be sure to disconnect the terminal from the battery. To avoid short circuits and failure of the vehicle's electrical equipment. Then disconnect the wiring harness from the resistor and remove the mounting screw.

In order to disassemble the resistor, you need to unscrew four bolts, and a board attached to the case will appear in front of you. Then unscrew the screws securing the board. It can be seen that 2 wires are soldered at the edges, and 3 in the center. A fuse is soldered onto two wires, and resistors are attached to three. For repairs everything needs to be desoldered. Then we determine what the reason is and what burned. We replace the faulty part with a new one and assemble it in the reverse order.

If after replacing or repairing the resistor the problem recurs after a short period of time, then you should pay attention to the interior heater fan motor itself. It may need preventative maintenance or a complete replacement with a new one.

On Lada Priora without air conditioning there is no resistor. The heater rheostat on it needs to be replaced.

As can be seen from the description, the work of replacing and repairing a resistor can be done without much effort and financial investment, but with the required soldering skills.

If you still have doubts about replacing and repairing the additional resistor yourself, contact a qualified specialist.

The Lada Priora stove only works in the max position - causes of the malfunction

I want to share my experience in repairing my Priora (with Panasonic air conditioning), or rather the stove in it. The point is this: the stove only works in the max position. In all others there is silence. There are several problems that lead to this. 1. In general, on Priors with Panasonic air conditioning there is a Rotation Speed Controller (RFV) for the fan. As a rule, it burns out, and the airflow button on the console starts blinking and the fan does not blow.

It is located under the plastic air intake on the driver's side. You need to remove the wipers, unscrew the air intake... it will be screwed on with two screws and there will be one chip going to it.

The problem is with him. Either replace it, but it costs about 2000 rubles, or repair it (I repaired it). 2. There may also be a bad contact in the chip. I didn't find the name of this connector, but the heater wires go through it. There may be a bad connection there.

How bad is the contact here? Either strip, solder, insulate... or re-solder the entire connector. 3. The switches on the console are acting up. It's either change or repair.

How to change a resistor on a Lada Priora heater

Difficulties with the heater can be of different types. We will not list or analyze all of them, since we are only interested in those whose prerequisite is the stove resistor on the Priora. By the way, this part is often called a rheostat.

It is easy to realize that the malfunction lies specifically in this mechanism. The stove starts working at only one speed or one of the speeds has stopped working. When one of these situations occurs, you can immediately draw a conclusion that the rheostat has failed.

Instructions for replacing the stove radiator

If you need to change a heater resistor or heater radiator, it would be better to dismantle the system in any case.

To replace the device, follow these steps:

The heating device itself is fixed with four or five nuts, depending on the configuration and year of manufacture of the car. There is nothing complicated about this, these nuts need to be unscrewed.
The next step is the most difficult, you need to dismantle the system. The heater is removed from the engine compartment at a certain angle. It is advisable to have someone help you at this stage, since removing the device yourself can be problematic.
When the device is removed, you will need to unscrew the three screws that directly secure the radiator itself.
The element is simply removed from its installation location and replaced with a new one. Further assembly steps are carried out in reverse order.

Life hack: gear motor and other components of the Priora car heater

If the windshield of a Lada Priora car is fogged up and looks as if it was smeared with greasy hands after eating pirazhki - driver, beware, your heater is leaking! Maintaining normal temperature in the cabin at different times of the year is necessary in order to feel comfortable behind the wheel. In winter, the stove on the Priora saves you from freezing, which provides the heat a person needs. But you need to take care of it and prepare it for winter in the summer, because being left without heating in winter is not the greatest pleasure. The sore spots in the system that break down more often than others are the gear motor and the heater damper. Priora is a warm car - the original DAAZ is very good, it warms, and is warm in winter, because its radiator has the correct structure and fluid circulates inside. If you install the Chinese Luzar, you will freeze at -20 - I checked it personally. I put this luzar on, then took it off. The heater radiator is available for cars with and without air conditioning. The structure of the node is slightly different. The stove block of the Priora car is indicated below in the figure. As you can see, in addition to the block, the entire assembly consists of many spare parts. On the Priora, the stove has a conventional design - having taken the time to diagnose, you need to completely check the entire system in order to make an “investment” in the future - in winter you will need to look for a heated garage for repairs. If the Priora blows cold air or does not heat well, these are signs that something is wrong inside, and this malfunction needs to be sorted out.

Replacing the heater radiator on a Priora with air conditioning

After some time, the manufacturer began to equip its cars with air conditioning (climate control), for example, HALLA or Panasonic (article: 21703-8101012). The design of the new Priora heater from a maintenance point of view turned out to be much more convenient. Now, to replace the stove, you do not need to dismantle the frill, windshield wipers, heater or vacuum brake booster.

It is only necessary to: remove the sound insulation of the engine shield, remove the engine air filter hose and the seal in the area of the heater radiator hoses. All! Drain the antifreeze and remove the radiator towards you, towards the engine.

Video instructions are attached:

Thus, replacing the radiator of a Priora stove depends not only on the type of heater, but also on the chosen method of replacing it. How did you remove the heater radiator on your car? Which method suits you best? Let us remind you that solutions to other problems with the stove can be found in this article.

Keywords: Lada Priora stove | air conditioner Lada Priora

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Photo of Lada Granta FL (updated sedan, hatchback, station wagon and liftback)

Lada Vesta maintenance schedule

Removing the heater

We remove the heater to repair or replace it, as well as to remove the heater core. Drain the coolant (see “Changing the cooling water”). We remove the throttle assembly and move it to the side without disconnecting the hoses from it (see “Removing the throttle assembly”). Remove the front panel upholstery (see “Removing the front panel upholstery”). We remove the wind window trims (see “Removing the wind window trims”). Remove the windshield wiper gear motor (see “Removing the windshield wiper”).

Overcoming the resistance of the clamps, we disconnect the clamps securing the wiring harness from the front panel. Disconnect the wiring harness from the brake pedal bracket (see “Removing the vacuum brake booster”). Bend upward the end of the brake pedal bracket (see “Removing the micromotor-reducer of the heater damper”).

Use a Phillips screwdriver to loosen the two clamps and disconnect the inlet and outlet hoses from the heater radiator pipes (the vacuum brake booster has been removed for clarity). Disconnect the wiring harness block from the heater fan motor wiring block (see “Removing the heater fan”). Disconnect the wiring block from the heater resistor (see “Removing the additional heater fan resistor”).

Use a 10mm socket to unscrew the right heater mounting nut...

...and two nuts for the lower heater mounting.

We move aside the bracket for fastening the wiring harness.

Using a Phillips screwdriver, unscrew the screw of the upper heater mounting. Having moved the heater forward, we disconnect the wire blocks from the micromotor-gearbox (see “Removing the micromotor-gearbox of the heater damper”). Loosen the clamp on the steam exhaust hose...

...and remove the hose from the heater radiator pipe.

We remove the heater from the engine compartment. Install the heater in reverse order.

Procedure for tightening heater mounting parts.

Source: wiki.zr.ru

How to check the impeller for foreign objects

The first thing to do if the stove fan on a Priora is noisy is to check the impeller and casing. This can be done without disassembling the climate control system or removing the impeller. In this way, you can remove leaves, small branches, and foreign objects that have gotten into the heater.

The operation is performed through the air recirculation hole, which is located in the glove compartment (glove compartment). Checking and cleaning is done like this:

put your hand into the glove compartment and feel the movable flap;

feel the flap with your fingers and open it by pulling it towards you (the flap feels like a small plastic barrel to the touch);

Note: The lid is hinged and pressed against the housing by springs so it can be opened safely without breaking the mechanism.

Use your fingers to check the space near the impeller for foreign objects and remove them, if any;

pull out your hand (the lid will close under the influence of springs).

Purpose of the heating gear motor on the Lada Priora

A gearmotor is a device consisting of several plastic gears driven by a small electric motor. The main task of the gearmotor is to open and close the heater damper depending on the position of the regulator on the dashboard.

Geared motors on Priora are made only in plastic, non-separable housings

The plastic from which the gears are made deteriorates quite quickly. After which the driver is forced to change the gearbox. This device cannot be repaired, because, firstly, it is not possible to find spare parts for it, and secondly, it is not so easy to open the plastic housing of the gearbox without breaking it. So there is only one option left: replacement.

Gearmotor location

The gearmotor on the Lada Priora is located near the expansion tank, under the windshield.

The gearmotor on the Priora is located under the windshield near the expansion tank

It is built into a niche on the wall of the engine compartment and covered with a thick layer of sound-insulating material. This material will have to be removed, since otherwise it will not be possible to get to the gearmotor.

The principle of operation of the stove - what it consists of on Priora, article numbers

For the VAZ-2170 restyling, two types of heaters were installed - with a Panasonic control controller or with an NSS control controller. The last type contains the following parts:

air recirculation damper gearmotor (21700-8127300-10);
Priora car heater fan (motor) (21700-8118020-10);
air filter (21700-8122090-00);
motor speed controller (2170-38127025-10);
heating system damper motor (21700-8127200-10);
heater radiator (21700-8101060-10);
outlet hose (21700-8101208-00);
outlet pipe (21700-8101200-10).

recirculation valve (21700-811908-00);
fan (stove motor) (21700-8118020-10; 21700-8118020-00);
vacuum hoses with check valve (21700-8119100-00);
solenoid valve (21700-8119130-00);
air filter (21700-8122020-00);
inlet pipe (21700-8101200-00);
damper gear motor (21700-8127200-00);
radiator temperature sensor (21700-8101250-00);
radiator (21700-8101060-00);
outlet hose (21700-810120800).

The pre-restyling car has a lot of parts from the “tens” - even the gearmotors are different. Much was inherited from the VAZ-2110, and the first cars before restyling were almost completely equipped with its heater. The assembled stove for the VAZ-2170 Priora pre-styling received catalog number 2111-8101012-10, a more updated version – 2170-81010-12. Price from 5500 rubles.

The device is as follows:

air flow reducer (2170-81271-00);
air temperature sensor (inside the car) (11186-81280-50);
control unit (switches that are built into the central console to set operating modes) (21703-81880-20);
resistor for setting the motor speed (2123-81180-22);
heater motor (2111-81180-20);
damper gear motor (2110-81272-00);
air filter (2110-81220-20);
radiator (2110-81010-60).

The heating radiator of the Priora car can operate in two modes: automatic and manual.

The manual mode is performed when a person independently sets the desired temperature in the cabin on the control unit.
The automatic mode operates almost constantly - the required and actual air temperature is checked and the control controller issues a command to change the damper angle, supply hot or cold air to bring the temperature to the set level.

When the driver adjusts the settings on the control unit, the resistor sends a signal with the necessary data to the motor. The fan can produce maximum power, although the resistor will not be used to its maximum. The same process with the direction of air - the driver sets it, and the gearmotor sets the desired position of the damper.

By its principle, the heating device “lies next to” the engine cooling system. When the driver turns it on, the heater tap opens, and hot coolant moves through the pipes, which passes through the radiator of the Priora car’s heater and returns back. This increases the distance over which the coolant circulates.

Therefore, turning on the heating is one of the ways to cool the engine. It will really become hot in the cabin, because all the heat will be directed there, and the engine will give off this heat more and more, the temperature of the coolant will drop.

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