Malfunctions and repairs of the Lada Kalina heating system

Spring came, it began to get warmer and I wanted fresh air) it was too early to open the windows, and it was dirty, I decided to open the recirculation flap so that air from the street could enter the cabin) I opened it halfway and the handle that I moved remained in my hands. Well, what can I do, I went shopping, but I couldn’t find such a thing anywhere. It's called b heater control lever lock

It costs about 300 rubles, but for some reason stores don’t carry it. A friend of the Kalinovod from the Lada-Kalina-forum came to the rescue and supplied an old control unit with the required part free of charge. And so, having left work early, I decided to transfer the part to my block.

The “beard” can be removed very easily, unscrew the two screws at the bottom under the plugs, remove the skewers and pull the entire trim towards you from below. Some write that you need to remove the radio, I didn’t, the wiring was long enough to remove the panel and stick your hand in there and disconnect all the wires. The stove control unit itself is also easy to remove (which cannot be said about the installation :)) 4 bolts are unscrewed, then the brackets securing the cables are removed with a screwdriver and the entire unit is pulled up.

Every car owner knows how important the operation of the heating system is, especially in winter cold conditions. If the stove fails, it will, at a minimum, cause considerable inconvenience for the driver and passengers, so the performance of this unit must be at the highest level. You can learn more about how to replace the stove on Kalina and in what cases it is required from this material.

Instructions for replacing the stove

Before removing all the necessary parts, cables and other components from Kalina, prepare a new radiator, pipes and clamps. The pipes will be required in case the old ones are worn out or they have never been changed over the years of operation. As practice shows, hoses are most susceptible to wear due to temperature changes, so in any case they need to be changed from time to time.

Instructions on how to change the radiator are presented below:

1. We begin the replacement procedure in the engine compartment. First, place a container under the drain hole and drain all consumables from the radiator. If you notice that the coolant is already old and has exhausted its service life, which can be understood by its color and deposits, then it is also better to change the antifreeze.
2. You need to ensure the most convenient access to all pipes and hoses of the radiator assembly in the engine compartment. To do this, dismantle the power unit air filter housing, the battery, and its platform. Next, you need to disconnect all the lines from the radiator unit in the engine compartment. Having done this, you can use a wrench to unscrew the nut that secures the metal casing to the engine shield. This nut is located next to the pipes that go into the Kalina's interior.
3. Next, we move into the car interior. You need to remove the gas pedal; to do this, unscrew the three nuts. As for the brake pedal, it cannot be removed, so just move it to the side as far as possible.
4. Now you have to cut the steel casing as shown in the photo, and then cut off the tubes of the radiator assembly. Having done this, you can dismantle the device from the pedals, but to do this you will also need to unscrew the bolts that secure it.
5. Before installing a new radiator device, it will be necessary to carefully sand its tubes. Please note that they should be as even as possible. After all surfaces are ready, a line with a widened end is put on the upper tube, and a line with a narrower end is put on the lower tube. The remaining outputs must be connected in the engine compartment instead of the old ones. Also note that on the side of the Kalina’s interior, it is advisable to treat the place where the lines exit into the engine compartment with sound-insulating material.

1. Disconnect the pipes from the radiator system.

2. Cut off the casing and saw off the tubes as shown in the photo.

3. Remove the assembly clamp and replace it with a new one.

Price issue

The range of radiator units for Kalina is not particularly large. On average, prices for radiators are as follows:

1. Radiator device from AvtoVAZ (price - about 940 rubles)

2. Device from DAAZ (price - about 1 thousand rubles)

How to remove the control unit on Kalina

Work order:

1. Open the hood and disconnect the negative terminal from the battery.
2. Using a slotted screwdriver, remove the radio guides from the installation location.
3. Disconnect the connectors and chips from the slide. You should sign the connections you disconnect.
4. Remove the lever that controls the air recirculation flap. It is located under the central knob that regulates the fan speed.
5. We remove two handles: the right one, which distributes the air supply, and the left one, which regulates the temperature of the incoming air.
6. Then we remove the two plugs that are located on both sides of the emergency stop button.
7. We unscrew the two screws that secure the cover from the bottom and are located under the plugs.

8. Slowly pull the trim towards you, freeing it from the metal latches located in the upper part of the instrument panel trim. Move the panel to the side.
9. We disconnect the connectors and chips that come from: — the alarm button; — a button that turns on the heated rear window; — housings for instrument panel illumination lamps; — block for switching the electric fan modes of the stove.
10. Make sure the heater block is accessible for removal.

Selection of spare parts

The choice of a stove radiator should be approached carefully, since changing it is quite inconvenient. The majority of motorists choose an original part that is available for sale. But few people know that there are several analogues.

Let's consider the heater radiator options for Kalina, their catalog numbers:

• 1118-8101060 is the article number of the original catalog number of the heater radiator for Kalina. It fits perfectly and does not require any modifications. The average cost in the Russian Federation is 1500-1700 rubles.
  Original heater radiator and hoses
• There are several analogues that are in no way inferior to the original in terms of quality. Thus, spare parts from the following manufacturers are suitable for Kalina: Pekar (1118-8101060), Fenox (RO0001O7), Luzar (LRH 0118) . The average cost of an analogue is 1200-1500 rubles.

Kraft stove radiator

Reasons for failure

There are not many reasons for the failure of a stove radiator, but you need to know them. Let's consider the main ones:

1. Radiator clogged , which led to pressure, resulting in a breakdown of the internal tube.
   Antifreeze flows into the cabin due to a breakdown in the heater radiator
2. An air lock can also cause a radiator leak.
3. Wear . Frequent use of the stove leads to wear on the inner walls of the tubes.

Perhaps these are the main reasons, but others may arise due to the operation of the car.

Repair and replacement of faulty parts

Many novice motorists ask questions: how to remove the heater regulator on Kalina, what LED is in the heater switch on Kalina, what should be done when the heater mode switch on Kalina does not work. Answering these questions, I want to say that initially it is necessary to dismantle our entire mechanism, after which we proceed to disassembly according to the following scheme:

• First of all, disconnect the negative terminal from the battery. This is done to de-energize the system so as not to short-circuit any of the sensors during the disassembly process.
• We remove the radio and turn off the power coming from the wiring harness.
• We remove the damper switch lever, then remove the temperature regulator and the air flow distribution regulator.
• At the bottom, remove the plugs behind which there are 2 screws, unscrew the fastening screws and gradually begin to remove the instrument panel console.
• After our panel is removed, it is necessary to disconnect the power supply connectors located on the back.
• After eliminating the malfunction, assembly is carried out in the reverse order.

To carry out this work, we only need a flat and Phillips screwdriver from the tools.

Difficult or impossible switching of the temperature regulator may be due to a breakdown of the switch itself. On a Lada Kalina car, replacing the heater switch is quite easy (provided that work has previously been done to remove the heater control mechanism). On the rear console of the control panel, unscrew the four screws securing the switch block. We remove the cable fastening clamps, then remove the cables from engagement with the drive unit. We replace the broken switch and reassemble it in the reverse order. When performing this work, I give you useful advice: the location of the cables on the lever block must be marked with a marker; this is done in order to install the rods in their original places during assembly.

The dashboard of a Lada Kalina car disassembled

When the stove temperature regulator does not work on Kalina, the main reasons for the breakdown may be: a disconnected connection wire or a failure of the thermistor. Such malfunctions are treated by soldering the wire and replacing the broken element. It happens that the stove regulator on Kalina does not work due to a breakdown of the temperature sensor, which happens quite rarely. This sensor is located inside the car interior lamp. If it is found to be damaged, it must be replaced with a new one.

Visual instructions for removing the fan resistor

Answering the question about what kind of LED is installed in the stove switch in Kalina, I want to say that there are LED lamps with a power of 3 Watts and a voltage of 12 Volts. This lamp is quite enough for illumination, but some motorists install LEDs with a power of 5 Watts. This does not affect the work process, the backlight just becomes a little brighter.

Removing the instrument panel assembly with heater

We remove the instrument panel assembly with the heater to replace the heater core, remove the heater fan motor, and also to remove the heater assembly. Disconnect the wire terminal from the negative terminal of the battery. Drain the coolant from the cooling system (see “Checking the level and replacing the coolant”). Below the car..

. Use the “8” head to loosen the tightening of the clamps. . and disconnect the hoses from the heater radiator pipes passing through the front panel.

Using a high 10mm head, unscrew the nut securing the heater to the front panel. We take out the cabin filter (see “Replacing the filter element of the ventilation and heating system”).

Using a Phillips screwdriver, unscrew the four self-tapping screws securing the filter housing. We unscrew the nuts securing the steering column and lower the column to the floor (see “Removing the electric power steering column”). Disconnect the wire ends from the brake light switch (see “Removing the brake light switch”). Remove the floor tunnel lining (see “Removing the floor tunnel lining”).

We disconnect the seven wiring harness blocks behind the relay and fuse box.

The principle of operation of the heating system in Lada Kalina

Before you independently look for a problem in the car’s heating system, you should study the principle of its operation.

The heating system control unit analyzes the data received from the ceiling temperature sensor. After this, he compares the obtained parameters with those set by the driver on the stove panel. If the difference in readings deviates by approximately 2 degrees, the heater control unit sends a command to the micro-gearbox. The latter, in turn, opens and closes the heater dampers, through which a heated air flow enters the cabin.

For this reason, if in a Lada Kalina a hot or cold stream of air is blowing from the heater, it does not matter how the knob is installed on the heater panel - it is worth checking the cabin temperature sensor.

Device characteristics

The air conditioning compressor drive operates directly from the motor, which is the main disadvantage of the system. Its use inevitably causes a loss of dynamics and increases fuel consumption. The air temperature in the cabin is regulated by turning a special knob on the climate control panel.

A special recirculation mode also helps cool the air. However, its long-term use reduces the amount of oxygen in the air inside the car and fogging of the windows. In general, the climate system of Kalina has three components:

• air conditioner;
• interior heater;
• air mixing control unit.

In Kalina, equipped with an air conditioning unit, air from outside the car flows first to the evaporator and then to the heater radiator.

Possible heater malfunctions and ways to eliminate them

Removing the heating system control regulator

If the stove blows very weakly or in the current mode it basically refuses to blow air, then there may be several malfunctions, as well as solutions:

1. The heating system hoses are worn out. As a rule, if antifreeze leaks or the stove does not heat, this may be due to wear and tear on the pipes. To solve this problem, it is necessary to carry out a thorough diagnosis of each of the pipes. Coolant may escape through cracks or other damage.
2. The heater valve has failed. If the stove control valve is broken, this can be indicated by traces of leakage of consumables in the vehicle interior.
3. There are malfunctions in the operation of the control unit. If the problem lies in the unit, then first of all you need to check the quality of its connection to the on-board network. If it is connected correctly, then most likely the problem lies there. It is better to entrust unit repair to specialists.
4. Wiring faults. Perhaps the unit does not turn on the heating system due to lack of contact with the on-board network. In this case, the problem is solved by checking the circuit to find the broken section.
5. The additional resistor is broken. This device is used to control the heater fan, so if the stove on Kalina does not heat, you also need to check the functionality of this element. If it doesn't work, then it will need to be changed.
6. The Kalina heater regulator, located in the car's interior, does not work. If the heater only blows hot air, but does not react in any way when switching its mode from hot air to cold air, then most likely the regulator installed on the center console has failed.
7. The radiator of the heating unit is broken. This problem is considered one of the most common on domestic cars, and it is especially relevant for Kalina. You can try to repair this device or change it yourself. We will tell you more about how to shoot and how to replace the device below (author - Interesting Video channel).

Main causes of malfunctions

So, what should we do if heat does not flow inside our car and cold air blows. Let's consider the main causes of such malfunctions:

1. Failure of the Kalina heater switching control cable. The reason for such a malfunction may be that the latch has fallen off, and the cable stretches normally in one direction, but does not reach the opposite direction.
2. On Kalina, the stove only works at speed 4. Associated with a broken thermistor.
3. On a Kalina car, the heater switch often breaks when turned on abruptly, which is due to insufficiently strong plastic.

Faulty heater resistor of the Lada Kalina car

Here is a list of the main breakdowns that may occur. Next, we move directly to the repair itself and replacement of failed parts.