Lada Kalina heater switch repair

With the onset of cold weather, the main task of every motorist is to create warm and comfortable living conditions in the car. After all, you will agree that it is much more comfortable to drive in a warm car than to be cold. However, if heat is not supplied, then it is necessary to figure out what could be causing this. In this article I want to talk about repairing the Kalina stove switch.

Heater switch on the central dashboard of Lada Kalina

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.

In addition, quite often problems with the stove can appear due to the car’s engine cooling system. We advise you to check the antifreeze level in the expansion tank. If it is insufficient, it is necessary to add coolant to the normal level.

It is worth noting that in winter, many drivers deliberately leave antifreeze at the minimum level, due to which in cold times the heating system begins to blow warm air faster.

Heater switch connector Lada Kalina / Granta

250 rub. /Thing

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Heater switch connector for Lada Kalina / Granta

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Method for checking the stove on Lada Kalina

The entire procedure is carried out with the engine running.

Checking the heating fan and ventilation system:

We move the temperature regulator knob of the control unit to the extreme position (blue zone).
Smoothly switch the fan speed from first to fourth speed.
We monitor the intensity of incoming air, outgoing air and the air duct. With each speed, its flow should intensify.

If Kalina’s stove still does not work, we check the functionality of the fuse, indicated F5 in the diagram. Together with him we check the power circuit. If the fan does not work at any speed or its intensity does not change linearly, it is worth checking the switch and additional resistor. If there is insufficient air flow, the cabin air filter should be replaced.

After everything described, we move on to checking the heater dampers. For this:

We move the temperature regulator to the extreme position (blue zone), set the fan speed to maximum.
We rotate the damper control knob on the block, at the same time we control changes in the direction of the air coming out of them.

If the air flow does not change its direction, this indicates a malfunction in the mechanical part of the heater control unit. For example, the rod has fallen off or the roller is not screwed onto it due to a breakage, or the damper is simply jammed. When climate control is installed, it is worth checking the performance of the micromotor gearbox of the ventilation unit damper, air conditioner and heater. For this:

warm up the engine to operating temperature;
We move the temperature regulator to the extreme red zone;
we control the presence of warm or hot air flow from the air ducts.

If the air flow temperature remains unchanged, you should check the functionality of the mechanical part of the heater control. When using climate control, we carry out the above operations. We also check the serviceability of the engine cooling system.

In conclusion, we note that if you are not confident in your abilities and capabilities, it is better to send the car for diagnostics to trained specialists, because any mistake you make leads to the replacement of an entire unit or system, which will have a significant impact on the family budget!

Replacing the Kalina cooling fan resistor

Problems with cooling the LADA Kalina engine are often associated with a failure of the electric fan power supply system. The cause of the malfunction may be a faulty Kalina cooling fan resistor. You can replace this part yourself, and the work will not take much time and effort. Those who are new to the LADA Kalina device often ask where the Kalina cooling fan resistor is located, what it is needed for and what its malfunctions are.

Fan Resistor Functions
Malfunctions of the Kalina cooling fan resistor
Causes of malfunction of the Kalina fan resistor
What is needed to check and replace
Checking and replacing the Kalina cooling fan resistor

Fan Resistor Functions

The Kalina cooling fan resistor is connected in series to the power supply circuit, which allows the engine to operate at different speeds. The resistance of the resistor changes depending on the temperature of the coolant and the load on the engine, and the current and speed of the fan motor change accordingly. This helps to eliminate sudden temperature changes and maintain optimal engine temperature in all engine operating modes. The fan resistor has a thermal fuse, which de-energizes the electric motor from overload (for example, when the shaft is jammed) and thereby protects the electrical wiring from fire.

Malfunctions of the Kalina cooling fan resistor

The electric fan only operates at high rotation speeds - The main sign that the additional resistor of the Kalina cooling fan is faulty. The electrical diagram for connecting LADA Kalina fans provides for the simultaneous activation of two blowing systems:

electric radiator cooling fan;
air conditioner cooling fan,

If at some point in time only one of them rotates, then we can conclude that the power supply circuit of the second one is broken. The same thing happens when the radiator fan does not spin after the engine warms up. There are several reasons for this phenomenon. This could be either a bad contact or a broken wire, or a faulty electric fan resistor.

Causes of malfunction of the Kalina fan resistor

The main reason for the failure of the additional resistor of the Kalina fan is the blown thermal fuse, which protects the electric motor winding and the power circuit from overload. In this case, it is necessary to repair or replace the Kalina cooling fan resistor. You can do the work yourself, it does not take much time, does not require high qualifications or special tools.

What is needed to check and replace

To remove, check and repair (replace) an additional resistor you will need:

ohmmeter;
crosshead screwdriver;
a set of keys;
soldering iron;
rosin;
solder;
a new resistor or part of it - a thermal fuse (16A and 180 degrees).

If the car has engine (crankcase) protection installed, it is better to remove it from a pit or on a lift.

Checking and replacing the Kalina cooling fan resistor

Removing the additional fan resistor is done as follows:

put the car on the “handbrake”;
open the hood;
remove the ground wire from the battery;
remove the engine splash guard;
unscrew and remove the engine crankcase protection (if installed);
press the block latch and unplug the electric fan power supply wiring harness;
Using a Phillips screwdriver, unscrew the two screws holding the additional resistor;
move aside the resistor mounting bracket together with the block;
pull out the resistor.

Checking the resistor consists of two stages:

visual inspection of the integrity of the spiral;
checking the resistor winding for open circuit using an ohmmeter.

If a winding malfunction is detected, the resistor must be replaced with a new one. If the thermal fuse is faulty, then all you can do is replace it. To do this, you will need a soldering iron to remove the burnt fuse and solder a new one in its place. All that remains is to put the parts in their original places. Installation of the Kalina cooling fan resistor is carried out strictly in the reverse order of removal.

How to repair Kalina stove control

Impossible or difficult switching of the temperature mode regulator may be due to a breakdown of the switch itself. Replacing the heater switch on Kalina is quite easy (provided that the work on dismantling the heater control mechanism has already been completed). On the rear control panel console, remove the four switch block mounting screws. Remove the cable fastening clamps and disengage the cables from the drive device. Replace the broken switch. Assembly is performed in reverse order. When performing these works, mark with a marker the location of the cables on the lever block. This is necessary in order to install the rods correctly during assembly.

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.

Diagnosis and troubleshooting

The easiest way to resolve the issue is regarding the cabin filter. For the first time, thorough blowing of the element will be enough, but then it is better to replace it. The real problem is a leaking radiator or a broken fan; an expensive replacement of the unit cannot be avoided. An equally high price will have to be paid for a new control unit.

It will be somewhat cheaper to install a new temperature sensor, gearmotor or Kalina heater resistor. Moreover, the malfunction still needs to be correctly diagnosed, which can be quite difficult. A burnt resistor is easily identified - the fan only runs at maximum speed. It is more difficult to check the sensor hidden in the lighting shade. A sign of a malfunction is that a hot or cold stream flows from one or more grilles, regardless of the position of the regulator handle.

It is more difficult to detect how well the mechanical heater regulator is functioning. To do this, you need to get to it by disassembling part of the front panel. In the same way, the proper operation of the air dampers is determined.

To carry out diagnostics, it is better to start searching for problems with the most accessible elements, and only then start disassembling.

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:

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.
On Kalina, the stove only works at speed 4. Associated with a broken thermistor.
On a Kalina car, the heater switch often breaks when turned on abruptly, which is due to insufficiently strong plastic.

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

CONTROL UNIT FOR VENTILATION AND HEATING SYSTEM LADA KALINA

Ventilation and heating system control unit: i — air temperature regulator; 2 — fan operating mode switch; 3 — air flow distribution regulator; 4— air recirculation control lever; 5 - rear window heating switch

The intensity of the air supply into the cabin is regulated by turning the handle of the fan operating mode switch. This turns on one of four fan speeds.

By turning the switch handle clockwise, we increase the fan rotation speed.

The position of the flow distribution control handle sets the following directions of air flow in the cabin:

By turning the handle of the air temperature regulator, we change the temperature of the air entering the cabin. To increase the air temperature, turn the regulator handle to the left, to the red sector of the scale, and to decrease the air temperature, turn to the right, to the blue sector.

Windshield cleaner and washer

The Lada Kalina windshield cleaning system includes:

Electric motor with gearbox;
Set of levers and brushes.

Standard electrical wiring Kalina windshield cleaning system
The diagram below shows:

Electric washer fluid reservoir pump;
Standard ignition switch;
Control unit for electric motor operating modes;
The windshield wiper motor itself;
Fuse and relay block;
Terminal “A” from the power supply.

Washer kit includes:

Polyethylene tank with pump;
Injectors located on the hood of the car;
Set of flexible connecting hoses.

Air Conditioner Frost

The Frost kit is installed on VAZ cars such as Granta and Kalina. This air conditioner is equipped with a three-position compressor regulator, which allows you to better adjust the microclimate in the car. The Frost air conditioner is easy to maintain: the main thing is to fill it with freon on time. This model can also be installed with a special cooled air filter.

Some car owners complain about the reduced performance of the system compared to some analogues, that is, normal air temperature is achieved in a longer time than when using an air conditioner of a different system. Most likely, this flaw is due to insufficient compressor power. But in general, the Frost system does not have a bad effect on the operation of the car, like a standard air conditioner.

Kit for installing air conditioning on a Lada Kalina car

This cooling machine runs on freon and is driven by a motor. In conjunction with the standard heater, the air conditioner forms a climate control system, which also allows you to reduce the air humidity in the cabin, which, at high relative humidity, protects the car windows from fogging.

The maximum speed, power, gasoline consumption and other characteristics of a car with installed air conditioning are maintained in accordance with the specifications for the vehicle. The Frost air conditioner, when brought to its maximum operating mode, has sufficient potential to reduce the temperature in the cabin by 5-12 ° C relative to the outside air temperature, depending on the intensity of solar radiation, air humidity and the number of people in the cabin.

The device of the stove adjustment mechanism

On the Lada Kalina car, the heater switches are located on a panel in the central part of the dashboard. It contains control mechanisms, namely:

heater temperature regulator;
fan operating mode regulator;
air flow distributor control regulator;
recirculation flap switch lever.

Actually, this is what our mechanism looks like. Now let's move on to possible causes of failure.

Engine cooling system problems?

Most often, problems with the stove arise due to the EDS (engine cooling system). The first step is to check the coolant level in the expansion tank and, if necessary, add it to a level between o and “MAX”. By the way, many car enthusiasts in winter specifically add coolant only to the “MIN” mark; the less liquid there is in the system, the faster it will heat up, and therefore Kalina’s stove will start blowing warm air a little earlier than usual.

If coolant has to be added all the time, then the cooling system is leaking somewhere. You should carefully inspect all pipes for leaks, and also tighten the clamps. If the stove (radiator) is leaking, then it should be replaced.

Now you should check the circulation of antifreeze in the system, paying attention to the expansion tank.

If there is no circulation of coolant, or it is insufficient, then there may be two reasons for this ailment: the pump (it should be replaced) or the ODS is clogged (needs to be cleaned).

We check the thermostat: warm up the engine to 75 degrees and touch the upper radiator pipe (in diagram No. 6), if it is cold, then the antifreeze is circulating only in a small circle, the thermostat should be replaced with a new one.

Another reason that Kalina’s stove does not heat is the air in the SOD. Read how to remove air from the engine cooling system. More details about how to repair Kalina's SOD.

How to check the operation of the Lada Kalina stove

We carry out all actions with the engine running. Before checking the heater, study the diagram and structure of the Lada Kalina stove.

Checking the ventilation and heating system fan:

We set the air temperature regulator knob on the control unit to the extreme position of the blue sector.
We alternately switch the fan speed knob, starting with the first speed and ending with the fourth.
We check the intensity of the air flow coming from the air ducts. It should get stronger with each switch.

If the heater does not work on the Lada Kalina, check the integrity of fuse F5, as well as its power circuit. If the fan does not operate in all modes, or the air flow intensity does not change linearly, check the additional resistor and switch. If the air flow is weak, replace the cabin air filter.

Checking the stove dampers:

Set the temperature regulator to the extreme position of the blue sector, and the fan speed to maximum.
We turn the damper control knob on the block and at the same time monitor changes in the directions of air flows.

Unchangeable air flows indicate a malfunction of the mechanical heater control unit (the draft has flown off, or does not screw onto the roller due to its breakdown), or the damper is jammed. If the car uses climate control, then check the damper micromotor and the ventilation, heater and air conditioning control unit.

Warm up the engine to operating temperature.
Turn the air temperature regulator to the extreme position of the red sector.
Warm or hot air should come out of the air ducts

If the air temperature has not changed, check the serviceability of the mechanical heater control unit (the rod has come off, or does not screw onto the roller due to its breakdown), or the damper is jammed. If the car uses climate control, then check the damper micromotor and the ventilation, heater and air conditioning control unit. Make sure the engine cooling system is working properly.

Checking the interior temperature sensor:

The interior temperature sensor is installed in the lampshade on cars equipped with a climate control system. Most often, a sensor malfunction can be determined by the operating mode of the stove. If only hot or cold air blows from the panel nozzles, regardless of the position of the handle on the heater control unit, then most likely the ceiling air sensor has failed.

Problems with Kalina's heater elements?

To understand why Kalina’s stove does not work, you should understand its operating principle: The heater control unit (HCU) receives a signal from the ceiling temperature sensor in the cabin (installed in the interior lamp) and compares it with the temperature set by the driver. If the difference is greater than a certain value (for example, more than 2 degrees), then the ACS unit sends a control signal to the micromotor-gearbox (MMR), which controls the heater dampers (opens or closes hot air from the heater).

Therefore, if Kalina’s stove only blows hot or cold air, regardless of the position of the handle on the heater block, then start by checking the interior temperature sensor.

Also, the cause may be the MMR itself, for example, its resistor layers or gear teeth have worn out.

Sometimes it happens that the stove does not blow well - the first thing you should do is replace the cabin air filter. The speed of the heater fan is affected by the heater resistor (for example, the 4th speed of the heater does not work), so it makes sense to check it too (it’s under the glove compartment).

If the electric heater fan does not turn on at all, then check the Kalina heater fuse - F5. And if the heater howls or hums, then most likely the problem is in the heater fan.

Another reason for the heater not working properly could be the Kalina heater control unit itself (for example, there are problems with the heater damper), but don’t rush to buy a replacement without making sure the actions are correct. The easiest way to find out why the stove is not working properly is to replace the part with a working one and check its functionality. It is not necessary to buy a new part; you can ask a friend for a known working part, or negotiate with the seller, leaving a deposit.

Thus, we have examined all the elements of the heater (see also the design of the Kalina stove). Start following the order of the article, moving from simple to complex, and then you will certainly be able to repair Kalina’s stove with your own hands!

Replacing the stove resistor Kalina2, Kalina

If your car's heater fan only runs at the highest speed, you need to change the resistor.
This is not a difficult job; along with buying a new resistor in the store, it can be done in ten minutes if your car is Kalina2 or Granta. A little longer on Kalina. The turbocharger supplies compressed air to the engine. Repairing and replacing it is much more difficult than replacing a heater resistor. Not every company can be trusted with such repairs. At this link you will find the company Turbo Tech Service, which diagnoses and repairs turbochargers of many car brands.

We drive up to the treasured store and remove the resistor. To do this, on Grant and Kalina 2, open the door on the passenger side and look behind the glove compartment from below. We see a heater fan, wires, and some other green assembly, secured with two self-tapping screws and connected with wires. This is it! Resistor! When the fan operates, a considerable amount of power is generated at the resistor, so it is always placed inside the air duct. And it should be attached from the outside to make it easier to change. Disconnect the connector. We unscrew the screws. We go to the store and tell the seller: “Like this one.”

Pay for your purchase and go to the car. It will take no more than five minutes to screw and connect the resistor.

It’s a little more difficult with the first Kalina. Under the glove compartment, look for a nondescript rectangular plug. It needs to be taken out. Disconnect the connector with the wires and unscrew one screw. The trick is that there is a shelf at the bottom and you need a small screwdriver. If it’s not there, you’ll have to visit the treasured store twice.

What the seller brings may be different from the old resistor. But don't give up. The connector is important, but the shape and location of the insulator and resistor coils does not matter.

But now you unscrew the old resistor and buy a new one. We need to screw it in, but it didn’t work out that way. The hole in the panel is small. Inconvenient. You need to hold a resistor, a self-tapping screw and a screwdriver. And all this with different hands. Don't be so quick to envy the octopuses. You need matches, or rather, one match.

Break off a piece and, inserting it into the mounting hole, secure the self-tapping screw to the resistor. There are a couple of trifles left - put the resistor in place and screw it on. Connect the wire to the connector. We put the plug in place.

The Kalina heater resistor costs from 125 rubles, for Granta and Kalina 2 from 450 to 1000 rubles.