The stove on the "Priora" does not work - possible causes and their elimination

The car "Lada-Priora" enjoys well-deserved love and respect of our compatriots. A good price-quality ratio, prevalence of spare parts and excellent maintainability make it the leader of the domestic automotive market. Nevertheless, as a result of Russian development, this car has some drawbacks.

As you know, "Priora" is a deep restyling of the previous model - 2110th. Therefore, most of the units and assemblies have moved from the "dozens", including the device of the heating and ventilation system of the passenger compartment. Most of the basic details of this system are "decimal".

Therefore, such unification is very helpful in repairing. Unfortunately, this feature goes sideways in the event of malfunctions. Quite often cases when the stove on the "Priora" does not work. Situations are different. In one case, problems can be with the fan, in the other - with flaps, etc.

Main reasons

The reasons why the stove on the "Priora" does not work may be several:

• Incorrect operation of the thermostat.
• Clogged radiator heater heater.
• Incorrect operation of the gearmotor of the heater flap or the heater motor.
• Malfunction of the heater control unit.
• The salon air temperature sensor is not working correctly.

Preparatory stage

Troubleshooting the heater should be started, provided that the engine and engine cooling system are in order to exclude their influence. To do this, you need to make sure that the antifreeze is filled in the proper amount, the engine is working and functioning normally. And after that, it's time to figure out why the stove on the "Priora" does not work. First check the coolant level in the expansion tank. Next, you need to start the engine and warm it to operating temperature. After this, it is necessary to check the serviceability of the thermostat - to feel the thick hoses that go from it to the radiator of the car.

The top should gradually become hot. If the rubber tube is still cold, then the thermostat is defective. In this case, you can continue to work only after replacing this item. Fortunately its cost is not high.

Another reason why the engine may not warm up to operating temperature is the leaky cover of the surge tank. It should keep the pressure in the system. Often a simple replacement of this cover can completely get rid of problems.

On the "Priora", in contrast to the "ten", the organization of the cooling system is done differently. And the formation of an airlock there is almost impossible. It can occur when the system leaks or when the antifreeze is poured into a completely empty expansion tank. Eliminates this quite simply. It is necessary in a warm car to drive the front wheels onto a hill and vigorously extinguish it on the spot. The cover of the expansion tank must be removed.

Malfunctions of a radiator of a heater

Another reason that the stove in the Lada-Priora car does not work (blowing cold air from the deflectors) may be the accumulation of dirt in the heat exchanger. When the cooling system operates in the engine block itself, sediments accumulate over time, which then are carried throughout the system, including the stove radiator. These deposits interfere with its effective work. The system will heat the air worse. In this case, the radiator of the stove can be replaced entirely. It is removed from the engine side. Before starting work it is necessary to drain the antifreeze from the cooling system. Then dismantle the wiper leashes, the "frog" overlay and push aside the noise insulation shield. After that, disassemble the body of the stove, disconnect the wires, remove the electric motor of the fan together with the impeller and take out the heat exchanger, disconnecting the supply hoses from it.

Problems related to the damper motor or the fan motor

A common malfunction on the car "Lada-Priora" - does not work the stove. Do not blow air at all.

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

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

Cold air from the deflectors can go also because the gearmotor operating the damper does not work, which blocks the flow of hot air. Access to it is also carried out from under the hood.

Often the reason for the failure of the gearmotor is the oxidation of current-conducting contacts. They need to be cleaned with sandpaper, having disassembled the case. You should also pay attention to the strength of the air flow. If even at maximum speed the air blows poorly, it's possible that the matter is in the clogged salon filter. It is located under the hood in the heater housing and creates additional interference.

Additional resistance fault

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

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

Incorrect operation of salon temperature sensor

There is another reason why the stove on the "Priora" does not work correctly. It arises because of a malfunction of the cabin temperature sensor. It is located in the ceiling lampshade.

The element, by measuring the temperature of the air in the passenger compartment, commands the damper valve to open or close. Thus, the microclimate in the cabin is regulated. Its serviceability should also be checked.

Malfunctions of the block of management by a heater

The operation of the heating system is completely tied to the heater control unit . It distributes the airflow, the intensity of the blowing of various zones of the cabin and the temperature regime. If it fails, the stove naturally stops working.

Malfunctions of switches ("krutilki") can take place. The control unit malfunction must be checked last, as this electronic unit and repair rarely yield. Therefore, it is advisable to temporarily replace it with a worker for a check, borrowing from a friend or in a shop on bail.

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

A common reason why the stove ("Priora" with air conditioning) does not work is the failure of the speed regulator (RF) unit, which is located on the heater housing under the hood. It regulates the intensity of the electric motor of the fan. If it fails, the stove ceases to function at all or only operates at the fourth speed.

The cause of the malfunction is often the prolonged operation of the heater in the recirculation mode (with the choke closed) and, as a consequence, its overheating. Therefore, its performance should also be checked.

Conclusion

Thus, finding the reasons why the stove on the "Priora" does not work is not such a difficult task. The main thing is to follow a clear sequence of actions and understand what the work of this or that node depends on.