The control unit of the stove VAZ 2110. The main malfunctions of the VAZ 2110 stove and their elimination

Heating systems in cars often fail in the winter. During this period, the stove is operated much more often, and hence all the weaknesses of this device are manifested. Often the control unit of the VAZ-2110 stove, as well as other elements of the system, breaks down. Today we will pay special attention to this node.

Construction of the heating system VAZ-2110

It includes three main nodes. This is the control unit of the VAZ-2110, the duct system, the heating block. The oven is controlled by an electronic unit. It consists of pens, with which the driver exerts the necessary temperature and intensity of the fan. Also, the unit includes a temperature sensor. As for the latter, it is necessary to automatically start the stove when the temperature in the car's interior drops more than two degrees below the set temperature. The sensor is equipped with a small fan. If you move the knob on the controller to position A, then a small electric motor is started in the heating unit, which controls the damper. The very temperature sensor in the VAZ-2110 can be found on the ceiling, near the lighting lamp.

Another important node of the heating system is the air ducts. They pass directly from the stove, and each channel has its own separate function. So, the central channels are designed for ventilation of the cabin.

The air distributor is responsible for the supply of cool air for ventilation or for warm air for heating. Two other ducts are designed to heat the passenger compartment on the rear row. The rest are also designed for ventilation. Two side channels heat the mirrors and partly the interior. To heat the driver's feet, separate nozzles are used.

Block responsible for temperature

The central node in the stove system is the heating block. Its main function is directly heating the cabin. This block is arranged as follows. An electric motor with fan blades pushes hot air, three flaps perform the function of recirculating and overlapping / opening channels. Also there is a radiator of the heater. On modern systems of a new generation, heat exchangers are not equipped with a crane. Therefore, the radiator is always heated, regardless of the time of year. The manufacturer claims that it so happened to solve the problem with the constant flow of the crane. In addition, the cabin heating is significantly accelerated. In summer, fresh air ventilation goes outside the radiator.

Typical malfunctions

In the summer it is very difficult to detect problems in the operation of the stove. It is practically not used for its purpose. When winter comes, the issue of the efficiency of the heating system is more relevant. Let's consider typical malfunctions, which owners VAZ-2110 most often face. In case of serious problems, an effective solution can only be the replacement of the VAZ-2110 stove.

Lack of coolant

If the mechanism does not work efficiently, first of all check the amount of coolant. Look at the expansion tank: it has advisory marks, and on the system block - an indicator. If the liquid is small, add it. Sometimes even after topping, the level of the coolant drops. This may indicate the presence of leaks.

Modernization of the damper on VAZ-2110

Malfunctions with the operation of the damper often lead to the fact that the interior is heated very poorly and slowly. The blame for all the control unit stove VAZ-2110. The controller is malfunctioning. The device does not command the flap to extend. In this case, it is recommended to check the temperature sensor. The controller knob is set to the extreme position and then several times unscrewed from the left position to the right. The temperature of the air flows must be checked by hand. In this way, the operating state of the sensor is checked in one of the end positions of the handle. If the airflow changes temperature at the extreme position of the handle, then the sensor needs to be replaced. If the heating does not change, the cause is sought elsewhere.

Problems with the operation of the fan

This will be reported by noise or a strong squeal during the movement of the car. First you need to find out what the cause of the fan failure. In some cases, the lower part of the heater body is missing. Then the hooks are installed in place, which serve as a fastener. However, it is more often possible to see broken protrusions on the body of the heater block. Here you need to replace the case. Another reason is the uneven coefficients of shaft expansion, if the fan is badly worn. In this case, experts recommend replacing the motor of the stove or its bushing. Sometimes the fan is noisy due to washers, with which help eliminate axial play. The element needs to be removed and cleaned. The washer should be replaced with fluoroplastic washer, then all is well lubricated.

If the stove does not work at the first speed

Each fan speed (except the last) is connected via a separate heater resistor. It is located not on the controller, but under the frill. One of the reasons for the impossibility of working at the first speed is the failure of the resistor. If the second speed does not work, then the reason is the same. But faults can also be caused by defects in the contacts on the board. Often, due to high temperatures, the board becomes very hot. As a consequence, contacts leave. It is necessary to carefully check the entire board. More carefully look where the food is served.

The third speed does not work

If the third fan speed is the last one (this is on old blocks), then it is connected without a resistor. Problems can occur in the contacts of the ACS. Below we will talk more about him.

Replacement of ACSW

Repair control units are not subject to - they are simply changed to new ones. But first you need to make sure that the reason is in this mechanism. Instead of the broken set up a serviceable control unit. Its price is about 1500 rubles. The element is easily dismantled: it is enough to remove the buttons installed side by side. And then you can pull out the device. The handles are set to zero positions and then removed. Then, the glass and the front cover are snapped. Before removing the control unit of the stove on the VAZ-2110, unscrew the two screws from the front and one from the rear. Then the board can be pulled out of the case and carefully inspected for its integrity. If there is damage to the board tracks, they must be restored. The subsequent assembly is carried out in the reverse order. If the temperature on the control unit is not regulated, then the entire board should be inspected. There necessarily will be defects. But before you remove the control unit stove on the VAZ-2110, you need to check the fuse box. Perhaps there is a bad contact.

Adjusting the air temperature from the heater

To set the desired temperature in the cabin, you can use the adjusting knob. But for a more accurate result and adjustment in the block there is a special screw. To check the accuracy of temperature control, all doors and windows are closed. Place a control thermometer in the vicinity of the sensor. Then the element is set to automatic mode, and the heating is looked at by the thermometer. How much can I adjust the control unit of the VAZ-21102 SAUO in time? The procedure takes no more than half an hour. If after 15 minutes the actual temperature does not match the set temperature, then the block is removed. Turn the adjusting screw clockwise. If you rotate the screw clockwise, the temperature will increase, if the opposite - to decrease. Then install the element in place and check the correctness of its operation. As for the possibility of repairing malfunctions, the control unit of the VAZ-2110 stove does not give a new repair to the repair (however, like the old one). In case of serious malfunctions, it is changed in its entirety. Moreover, the cost is low.

So, we found out why the stove does not work and how to solve this problem.