Does not warm the stove of the prior with air conditioning Halla. What should be taken if in the car Lada Priora does not work well. Heater Control Unit

In the winter months, find out why the stove does not work and blows with cold air on the prior (or another typewriter domestic production), you need as quickly as possible. Of course, you will not turn into a lacy and do not risk nothing to frozen. But ride with non-working heating, at least unpleasant and fraught with different kind of colds.

And it is dangerous to leave on the track and it is dangerous: God forbid, something will break, you really freeze, while the assistance paces. Priora is a generally accepted descendant and successor of Lada- "dozens".

Why does not the stove work and blows with cold air on the prior? There are many reasons for that. In order of descending, the frequency of cases can be positioned as follows:

• Jammed a furnace flap. It does not open and does not admire warm air into the salon. By the way, the reverse version is possible: if it is closed in the open position, you start feeling in the sauna;
• Heating motor deuctor broke;
• The stove control unit does not work;
• Malfunctions in the engine cooling system;
• Broken temperature sensor In the cabin, and the heating system is simply not aware that you are cold. Again, in a similar, but opposite case, it may be hot.

Torn filter

Experienced hosts were developed by an action algorithm for clarifying, which was tested by the heating system.

First approach

Before all the checks, you need to make sure that the fan works - it will be unreasonable to climb deeper if the main element does not spin. Further actions are as follows.

• The engine is heated to the desired temperature;
• Touch the pipes leading to the heater. Both hot - order, one has the ambient temperature - it means there is no flow circuit;
• The hood opens, there is a crane and turns to another position. If he encourages, you will have to urgently cry.
• The system is checked for leaks. The detected eliminates: the constant shortage of the cooler is also the cause of cold imagination;
• The crane works, there are no leaks - a plug is removed from the tank and the fluid level is checked. Often an air stopper is formed in the reservoir; In this case, the cooler fills up to the norm, and the gas pedal is pressed several times. The cycle of the liquid will resume and wait the tube from the reservoir;
• For greater efficiency of the last step, it is better to go to the nearest buds to the nearest pitch so that the car radiator is below the stove radiator.

Second approach

When (or if) both pipes are filled with hot liquid, go to the flaps.

• Again you will have to climb under the hood, this time then to watch the work of the flap;
• If it twisted or jammed, you can try to gently shake out of the inside of the cabin. For this, the central deflector is removed, unscrewed the guides from plastic to reach the jammed element. Access is possible only for a fine limb, so it is desirable to invite a female person to the procedure if it is not against;
• In case of serious problems with the damper (the attachments were attached, there was plastic from temperature or he cracked) you, alas, are waiting for heavy work: you will have to disassemble half the heating system.

Third approach

Microreductor and solid headache. First, the status is checked:

• The left handle is translated into the "min" position. After a 15-second wait, the engine launches;
• Disconnected the controller, which is called for Sao;
• Tester measured testimony On both contacts. Resistance should be 800-1200 ohms for aggregates 1303.3854; 1313.3854 and 1333.3854; For the controller 1323.3854, the norm is 3600-5000;
• The same operation is carried out at the position "MAX". Now data in the band 3200-3500 for the first group and 1200-1600 for 1323.3854;
• In the absence of resistance or its unchanged - the track erased on the sensor. Separately it is not for sale, so you have to change the MMP entirely. It is clear that not all the reasons why the stove does not work and blows with cold air on the prior, you can eliminate on your own.

The car "Lada Priora" enjoys well-deserved love and respect for our compatriots. A good value for money, the prevalence of spare parts and magnificent maintainability make it the leader of the domestic nevertheless, being the result of Russian development, this car has some drawbacks.

As you know, the "Priora" is a deep restyling of the previous model - 2110. Therefore, most nodes and aggregates switched from "dozens", including the device of the heating and ventilation system of the cabin. Most of The main details of this system are "dozens".

Therefore, such a unification helps a lot when repairing. Unfortunately, this feature leaves the sideways when the fault occurs. Pretty frequent cases when the stove on the "Prior" does not work. Situations are different. In one case, problems can be with a fan, in the other - with dampers, etc.

Main reasons

The reasons why the stove does not work on the "Prior" may be somewhat:

• Improper functioning of the thermostat.
• Radiator clogging
• Incorrect operation of the motor of the heater damper or heater electric motor.
• Malfunction of the heater control unit.
• Incorrect operation of the cabin air temperature sensor.

Preparatory stage

Troubleshooting the heater should be started under the condition that force aggregate And the engine cooling system is in order to eliminate their effect. To do this, make sure that Tosol is covered in due quantity, the engine is working normally and is functioning normally. And after that, it is already found out why the stove on the "Prior" does not work. Initially, check the coolant level in the expansion tank. Next you need to start the engine and warm it up to operating temperature. After that, it is necessary to check the health of the thermostat - to feel thick hoses that go from it to the car radiator.

The top must gradually become hot. If the rubber nozzle is still cold, it means that the thermostat is faulty. In this case, you can continue to work only after replacing this item. Fortunately its cost is small.

Another reason for which the motor may not warm up to the operating temperature is a leakage of the expansion tank. It must keep overpressure in the system. Often a simple replacement of this cover can be completely getting rid of problems.

On the "Prior", unlike the "dozens", the organization of the cooling system is carried out in a different way. And the formation of an air traffic jam is practically excluded there. It may occur if the system is leakagelessly, either when pouring toosol in a completely empty expansion tank. Eliminates it is simple enough. It is necessary on a heated car to drive a front wheels on some slide and vigorously pay off on the spot. The lid of the expansion tank at the same time should be removed.

Malfunctions of the radiator heater

Another reason for the fact that in the car "Lada Priora" does not work from deflectors), may be the accumulation of dirt in the heat exchanger. When the cooling system is running in the motor block itself, deposits accumulate, which are then distributed throughout the system, including in the stove radiator. These sediments interfere with its effective work. The system will heat the air worse. In this case, the stove radiator can be replaced entirely. It is removed from the engine side. Before starting work, it is necessary to drain the toosol from the cooling system. Then dismantle the leashes of wipers, the "Jabs" lining and push part of the noise insulating shield. After that, disassemble the stove case, disconnect the wires, remove the fan motor along with the impeller and remove the heat exchanger, disconnecting the supply hoses from it.

Problems associated with the damper motor or electric motor fan

A common fault by the Lada Priora car - the stove does not work. Does not blow air at all.

First, you should make sure that it works - from the deflectors should blow at least cold air. If not, then you need to check the integrity of the F9 fuse.

If it is intact, it means that the fan stove does not work. "Priora" is equipped with a "tenth of" fan. Therefore, the removal exactly repeats the procedure on the "top ten" procedure. In some cases, the fan does not spin because leaves or other foreign objects that can block rotation can be blocked between the impeller and its housing. In this case, you can hear the characteristic hum.

Cold air from deflectors can also go and because the motor detector does not work, controlling the flap, which overlaps the stream of hot air. Access to it is also carried out from under the hood.

Often the cause of the motor destructive contacts is becoming the oxidation of conductive contacts. They must be cleared with sandpaper, disassembled the case. Also, you should pay attention to the strength of the air flow. Even if maximum speed the air blows weakly, perhaps the case in the clogged salon filter. It is located under the hood in the heater housing and creates additional interference.

Malfunction of additional resistance

Often there are situations when the stove switch does not work on the "Prior" - the motor functions only at the fourth speed or only on the first one. The reason here can be in an additional resistance, which slows down the turnover rotation of the stove fan.

This resistance is a block of resistors (the fourth speed is straight, without deceleration). Located in the heater housing on the left side and is fastened with two screws. This resistance is also unified with many domestic models (2110, "Kalina", "Chevrolet-Niva").

Incorrect operation of the salon temperature sensor

There is still a reason why the stove on the "Prior" does not work correctly. It occurs due to the malfunction of the salon temperature sensor. It is located in the ceiling flake.

Element, measuring air temperature in the cabin, gives the command to the opening or closure reducer. Thus adjusts the microclimate in the cabin. Its service should also be checked.

Heater Control Unit

The operation of the heating system is completely tied to it distributes air flow, the intensity of the blowing of various zones of the cabin and the temperature regime. With his failure, the stove naturally ceases to work.

There may be a malfunction of the switches ("Cruffers"). The malfunction of the control unit must be checked later, since this electronic unit and repair rarely gives away. Therefore, it is desirable to be temporarily replaced by a worker to be temporarily replaced by a job, lenting from a friend or in the store on bail.

Features of the heater in the "Prior" with air conditioning

A frequent reason why the stove does not work ("Priora" with air conditioning), is the failure of the rotational speed controller block (RFB), which is located on the heater housing under the hood. It regulates the intensity of the fan electric motor. With his failure, the stove ceases to function at all or acts only at the fourth speed.

The cause of the malfunction often becomes the long operation of the heater in recirculation mode (with a closed air damper) and, as a result, its overheating. Therefore, its performance should also be checked.

Conclusion

Thus, finding the reasons, due to which the stove on the "Prior" does not work, is not such a difficult occupation. The main thing is to observe a clear sequence of actions and understand what the work of a node depends on.

If in the car (prior interests us most at this moment), then the driver and passengers this situation delivers a lot of inconvenience. In the summer, this problem is irrelevant, because no one is particularly worried about what the heater is located. And only with the onset of cold weather, the overwhelming number of motorists is puzzled by the problem of the non-working heating system.

Possible causes of cold air

The situation is common when the cold air blows from the stove of priors, the reason for this may be not alone. It is in determining the malfunction and is the main problem. The reasons for not blowing the stove on the prior may be somewhat:

1. The engine cooling system breakdown is the most common problem. It is with it that it is worth starting diagnostics. In most cases, the stove does not turn on on the prior for this reason.
2. Highly to be replaced with a new one. This procedure should be performed every six months, without waiting for the moment when the stove starts blowing cold air.
3. The stove is bad on the prior, perhaps due to the damper, which can be in the jammed state. It can not open completely, blocking the path of hot air flow paths.
4. And the problem may be in the motor deuctor. It is necessary to check it on working capacity.
5. If the stove does not work on the prior as you would like to pay attention to the control unit.
6. The temperature sensor may also have a negative impact on the health of the heating system. To decide on this moment, you will need to disable the sensor and see how the heater will behave.

We carry out a comprehensive diagnosis

Not so easy. Even experimental motorists It is not possible to cope with this task quickly. In order not to make such a large volume of work invested, it is better to first diagnose the heating system. It is necessary to act as follows:

1. Take the channels through which the cooling fluid comes to the heater. They must be warm when the stove is turned on. In addition, when pressed on trunk rubber hoses, resistance should be felt. If the resistance is not felt, you can talk about the fault pump pump. This mechanism is responsible for creating a pressure of fluid flows necessary for the normal operation of the heater.
2. A small secret may be useful to owners of the Lada Priors: The stove blows with cold air for a long time and warms up not as fast as I would like? Then you can try to fill the coolant to the bottom mark in the tank. In this case, the liquid will warm up faster. If this method is practiced, it will be necessary to constantly check the level of the coolant.
3. If working, you can talk about the problem in the bearing, which is located on the electric fan. It is impossible to ignore this situation, because in the future it can jam the fan and repair will gain much larger scales.
4. Do not work stove? Perhaps the problem is hidden in the F9 fuse with a par value of 25 A. Its functions are to protect the power electrical heater lines. Dropped fuse must be replaced. If a similar situation arises with enviable constancy, then it is necessary to check all electrical circuits Heater, insulation windings on the fan and the presence of power supply chain overload.

No heating at idle

This question is not in vain for a separate consideration, because it worries many motorists and the solution to the problem can be much more complicated than expected. So, you have a prior, does not warm the stove on idlingAlthough when moving the car, the interior is heated in normal mode. Here you can also identify several possible reasons:

1. Insufficient coolant level.
2. Leaks that lead to a decrease in the level of antifreeze.
3. Availability .

If the first two problems can be easily diagnosed and eliminated, then the case is much more complicated with air traffic. If you excluded the first two reasons and still does not heat the stove priors at idle, it is necessary to eliminate air traffic. It is necessary to act as follows:

1. We dismantle the screen from the engine.
2. The clamp is lowered, after which it is necessary to remove the heating tube of the throttle node. Of the two choose any.
3. On the expansion tank we unscrew the lid. On the neck, we place a clean rag and start blowing into the expansion tank. The air supply must be carried out until the coolant will begin from the tube that has previously removed.
4. We immediately wear a tube on the fitting and thoroughly tighten the clamp.
5. Install the screen.

If the option with blowing a tank is not suitable, you can go to another way. Warming the engine to pressure in heating system Rose. After some time, the car and remove the hose from heating the throttle node. In this case, the cork from the tank is not required. As a result high pressure A coolant will be supplied through the tube. It remains to put the tube on the fitting and tighten the clamp.

Now it should not cause difficulties the stove of the prior, faults how to eliminate, you know, and also to diagnose and identify the source of problems. Let the heater on your car always be turned on, working properly and give comfort, regardless of the weather outside the window.

Often Russian motorists who exploit the Lada Priora, complain that the stove does not work well in the cabin vehicle Cool, frozen the side and windshields of the car. In order to understand why the stove stopped working on the prior, consider the device of the entire heating system on these modifications.

System of Heating Salon Priora

The vehicle is equipped with a stove (heating system) with a climatic complex that serves for comfort during a trip to the car. They are designed to eliminate issues in case of cooling or other weather changes. No one will ask the question why the stove does not work in the prior, nor the driver or passengers.

The car's climatic complex is counted:

• actually stove (heater);
• fan stove device;
• temperature sensor in the salon room;
• case part of the air distributor;
• air mains;
• deflectors (guide stream of air mass).

The air flow from the stove is translated into the body part of the air distributor, from where the airways are sent. Under the air ducts, the stream rushes to blowing labs of windshield and side location, to the air mass guides in the center and side dashboard, as well as in the lower plane of the salon to the polishes on the bottom of the body. With the arrival of frosts, defects of the heating system are manifested, the most unpleasant of which is the one that the stove of Lada Priora and other faults does not work.

Malfunctions of the car heating system

In the car Lada Priora, the stove controller does not work due to the malfunction of the multi-position switch or the imaging fan defect. When troubleshooting this fault, when the fan of the prior stove does not work, the fuse block, which serves as the main vendor supplier for the operation of the ventilation device. Many climate system defects are directly related to the operation of the vehicle cooling system.

In the event that the fan device is good, and the stove is bad on the prior, the defect should be seen to the sequential method of cutting off the proven elements. So, the stove works well on the prior and cool in the cabin:

First stage: On the motor, brought to the optimum temperature, check 2 nozzles, which were connected to the heater, for temperature values. If both products are hot, then the circulation of the air masses is absent, and if one nozzle is hot, and the other is cold, then it shows the absence of a water-cutting of the aqueous solution in the system. We carry out the diagnosis of the heater crane in order to deal with the cooling system solution (water, tool).

To this end, open the hood and translate the crane from one position to another. If there is flow from the heating system, then it must be eliminated, because The insufficient amount of the cooler can provoke the situation when cold air blows from the stove of the priory and in the cabin becomes cool. If the crane rusted and not regulated, it is possible to leave it in this position for the summer when the heating system is not operated. Closer to the cold it is required to replace it.

Second phase: When you find a crane in the working position and refusing the stove from work removed bay cork Radiator tank and look at the presence of a liquid-cooler. In the event of the formation of the so-called. "Air tubes" The coolant level is brought to the maximum value (sometimes it happens that cold air blows from the stove due to the lack of a cooler fluid). After that, turn on power installation And sharply press several times the accelerator pedal, which will provoke the cooler circuit and under its exposure to the water pump will squeeze the air layer cork.

In order for air mass faster to move to the output level, it is required to enter the exaltation so that the radiator is below the radiator of the cooling system. So, the circulation of the cooler is restored, 2 the nozzle has become hot, however, the stove on the prior does not work well anyway?

Third stage: Perhaps the dampers do not work, because the open lever on the instrument panel does not mean at all that the dampers have duplicated this command. The failure of the flaps may be associated with the looping of the attachments of the thrust and the cranes of the heater, which blocks them in summertime.

Will not be superfluous open hood Check, work or do not work the flaps of the stove of the prior, as well as clean the heater from last year's garbage and foliage. If, after these measures to clean the system, the system does not work poorly or does not function the salon heater, then we turn directly to the pipes.

Fourth stage: Check the temperature of the nozzles when the stove is turned on. If the fan is in working condition, the two nozzles are hot, but one begins to cool after a while - it is necessary to change the water pump due to the weak circulation of the cooler. Some motorists manage to install a small water pump under the stove radiator.

Starting to test the heating system, bring the technological process to the end:

1. The level of the cooler in the extension tank must be between the MIN and MAX marks.
2. We test the cooler circulation process in the extension tank. Its absence is defined as a water pump defect or clogging of the cooling complex.

This diagnosis of the heating system is over.

By car "Lada Priora" the heater is not just a stove. In fact, this is a full-fledged climate control device. In terms of its characteristics, the stove "Priors" is not inferior to foreign devices of this type. But as well as all the mechanism, the stove "Priors" may fail. In this article, a review of the heater and features of its repair.

Features of the stove priory

Climate control of this car in some options is designed to install the air conditioner. Therefore, the device of this device in this case is a little different than that of the VAZ-2110 heater. This article discusses the standard version of the heater. Although they have a lot in common. The stove (heater without air conditioning) "Priors" includes the following large nodes:

1. Case stove.
2. Air duct system.
3. The electronic unit Heater control (ECU) with control console.

This is, so to speak, three basic nodes. All of them, except for the ECU, disassemble and consist of various subsystems. According to conscience, the control unit, with a big desire, can also be disassembled. But it is not worth doing this. This is a thin electronic device, and only a specialist can repaired it. But with two others there are options.

Housing

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

• Corpus consisting of two parts.
• Purchasing electric motor with fan.
• Small heating radiator with nozzles.
• Variable resistor.
• Heater air damper.
• Microworoscottor, heater damper drive.
• Cabin filter.

Attention! Equipped with air conditioning "Priora" has additional elements as part of climate control, but this is a separate topic that is not affected in this article.

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

Location and access

As with the VAZ 2110 models and modifications, the heater is located outside the cabin. It is in the engine compartment. Right under the windshield. From the engine, it is separated by a special moto-cardboard partition. And on top is closed with a plastic dual casing, which hides this compartment, in which the heater is installed, also the brake vacuum and the engine cleaner drive.

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

Cabin filter

Most often, fails, or produces its resource precisely this part. He simply clogged with mud and dust. It is expressed in a decrease in the intensity of the fan operation. Sometimes, it is contaminated to such an extent that the stove fuse burns. The load on the electric motor grows so much that the fuse simply "knocks out". The reader is located at the air inlet into the heater. Near the right wing of the car. It is closed with a decorative plastic lid.

Important! Do not wait for pollution. It is recommended to periodically replace the filter 2 times a year. In the spring and autumn.

Electric motor stove

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

Resistor heater

This element serves as a peculiar fan rotation speed switch. It has several resistance steps. Each step is speed. Malfunction of the resistor to determine easily. If none of the speeds do not work besides the maximum, then in 99 cases out of 100, it is a resistor. And only in 1 switch, in the control unit.

It is also on top. But it is quite easily removed without dismantling all the stove. It is enough to remove the connector and unscrew 1 screws fixing resistor. And that's it.

Micromotor

In the climate control system "Priors" there is no option to disconnect the radiator from the car cooling system. That is, the hot liquid is constantly drawn. Cold air supply is provided by the direction of air flow from the fan using a special damper, which overlaps the radiator and passes the flow by.

Moves this detail Special device - microworoscottor. It is controlled by the control unit. It can also be replaced without removing the fully heater. Although it is located between vacuum amplifier Brakes and stove housing. However, its diagnosis and replacement has features that will be described in a separate topic.

Air damper heater

One of the key devices of the system, despite its simplicity. The flap moves on the axis rotated by the micromotor. Located inside the stove "Priory". Therefore, for repair or replacement, naturally, the stove must be dismantled.

Attention! The repairs needed the first samples of dampers made of plastic. Currently, the "priors" put flaps from aluminum. Therefore, there is no need for their repair and replacement.

However, if all the same in the presence of a "prior" with a plastic flap, then the drive protrusion can break it. It is quite simple to determine it. Turn on the ignition, and removing the casing separating a niche with the heater from motor compartment, To watch the gearbox, switching the thread control handle from hot to the cold. It can be seen that the drive rod rotates, and the temperature does not change. So, the damper must be changed. This procedure will be a separate article.

Radiator

And the main heating knot is the stove radiator. It is located as well with right side, Near the damper drive. Naturally, for his replacement, the stove "Priory" will have to shoot. It is attached to the casing of three screws. And after removing the heater it is easy to pull out twisting these screws. Clear the radiator seat and install a new one. This item is made of plastic and aluminum and repair is not subject to repair. Only replacement.

Important! When replacing the radiator, be sure to use a special adhesive sponge, it is glued to the sides and the end side of the radiator. This is necessary to avoid the formation of cracks from shocks about the stove body.

Determine the flow of the radiator is quite simple. Although the cooling fluid on these heaters does not fall into the salon when leakage from the radiator, but when it appears, with any position, evaporation valve instantly falls on windshield. They form a clearly prominent muddy film with a sharp smell of toosol. it clear stove radiator replacement signal.

Electronic heater control unit

This is a mini-computer with its program. The convenience is that it is initially connected to the channel computer diagnostics. Therefore, many faults can be revealed to connect diagnostics to the diagnostic "Priory" diagnostic connectors. But this interesting topic will be described in a separate article.

Useful video on the topic "Removing the" Priory "stove: