The heating, ventilation and air conditioning system of the Vesta's interior differs from similar systems of other Lada models. The difference is not only in its design, but also in the control method. Let's look at the design features of the Vesta stove, and also evaluate its effectiveness.
The Lada Vesta car has a stove heater…
...designed to heat the car interior.
The stove is also actively used in rain or cold weather. The heater is also activated if necessary to quickly remove fogging from the windows or warm up passengers. In the “Lux” configuration, the car is additionally equipped with air conditioning, which creates a favorable temperature for a person.
The most common malfunctions of the Lada Vesta heater radiator: leakage, fan noise, engine vibration. The replacement process is not complicated, but requires care on the part of the repairman.
How the stove works on Lada Vesta. Device
- The heater radiator is connected to the system main via rubber pipes. The heat emitted by the internal combustion engine is transferred to the heating system.
- The heating system radiator distributes heat throughout the car interior using an electric fan.
- A preset resistor online regulates the fan rotation speed.
- The air flow is circulated and cleaned by a mesh and cabin filter (see diagram).
- With the help of installed dampers, the driver and passengers regulate the air flow flowing to them.
- The gearmotor rotates the damper based on the readings of the regulator and heater sensors.
Elements of the ventilation and heating system
The stove body (in Fig. No. 5) is located in the car interior under the instrument panel frame. Inside the case there are:
- heater radiator;
- electric fan;
- fan speed controller (RFV) or additional resistor;
- air flow distribution damper;
- gear motor that regulates the dampers;
- air filter.
The heater radiator releases heat to heat the interior. Located inside the case on the left side. To replace it, you will have to remove the upper frame (lining) of the panel (dashboard).
An electric fan forces air into the car interior through air ducts. It is located on the other (right) side of the body. Access to it opens after removing the glove compartment.
The additional resistor is designed to regulate the rotation speed of the fan motor. It is installed on the heater housing on the driver's side.
The cabin filter cleans the air entering the cabin. Located in the heater block on the passenger side. It is replaced from inside the car (and not from the engine compartment, as on Grant, Kalina or Priora). In addition, the filter element resource is 30,000 km, and not the usual 15 thousand km.
The job of the gear motor is to regulate the position of the damper, which distributes air throughout the cabin. How this happens is shown in the video:
Air temperature sensors in the cabin and outside transmit readings to the engine control unit (ECU).
The control unit for the stove (heater) and air conditioner (SAUKU) is designed to regulate the air temperature in the cabin, change the speed and direction of air flows, and control the heaters. Depending on the configuration, the SAUKU may differ slightly. There are three types in total:
- SAUKU without air conditioning;
- SAUKU with air conditioning;
- SAUKU with climate control.
Typical stove malfunctions
The most common problems with the stove on Lada Vesta are the following:
- the actual temperature does not correspond to the set one - low level of antifreeze (antifreeze), clogged radiator pipes or the formation of an air lock, which causes cold air to blow;
- vibration appears during operation - the electric motor is loose;
- insufficient air flow from the deflectors - clogging of channels and air ducts;
- the heater is inactive when it is activated on the dashboard - failure of the fuse (No. 14) of the mounting block.
Checking the stove fan
During the circulation of the air flow, dust particles settle on the surface of the impeller, as a result of which it begins to make noise and extraneous sounds appear.
To clear the fan blades of debris, it is necessary to provide access to the unit.
- Unsnap the glove box.
- Remove the filter element.
- On the right is the furnace mechanism. We press the plastic clips and turn the impeller counterclockwise.
- We remove the motor.
- We wipe the drive with a rag.
- Install the parts in reverse order.
Checking the stove dampers
Dampers are installed in the area between the deflectors and the fan. During operation, they fail, become deformed, and become damaged. Checking the serviceability of the damper on your own is quite simple: you need to activate the stove at maximum speed. If it doesn't blow well, it means the air duct is clogged. Change the damper positions. If you hear squeaking or noise, lubricate the moving parts with silicone grease.
Foggy windows when the heater is activated is the first sign of a ventilation problem. This problem provokes a sharp decrease in visibility on the road and an increase in the risk of an emergency. As soon as fogging is detected, check the condition of the ventilation; most likely, the air ducts are clogged.
Checking heating efficiency
Carry out prevention before the onset of winter. Be sure to check:
- heating the air;
- changing speed modes when switching the control lever, if necessary, replace the brushes of the stove motor;
- absence of extraneous noise, whistling in fan operation;
- the need for a time interval to warm up the air ducts.
Note to the driver! The left and right pipes must be at the same temperature. Otherwise, this is a sign of a malfunction of the heating system.
CHECKING HEATING EFFICIENCY
We start the engine and warm it up to operating temperature . We check that the inlet and outlet pipes of the heater radiator are heated and have approximately the same temperature. If the pipes have different temperatures, then it is possible:
- low coolant level in the expansion tank (which antifreeze is better)
- An air lock has appeared in the engine cooling system (air can be released through a special valve)
- Heater radiator clogged (replace)
We install the temperature regulator on the stove control unit all the way to the red zone. We make sure that the temperature of the air leaving the panel deflectors begins to rise. If it blows cold, it means:
- The damper drive is faulty (the damper does not open,
- preventing the passage of air through the heater radiator)
- The heater control unit is faulty (how to remove)
Articles about tuning Lada Xray
Replacing a stove radiator with your own hands on a Lada Vesta
Preparation of the workplace, necessary tools:
- rags;
- Phillips head screwdriver;
- flashlight to increase visibility;
- new radiator.
How to remove a radiator. Replacement sequence:
- We turn off the engine, turn off the ignition, and squeeze the parking brake.
- Open the hood and remove the terminal from the battery.
- We grind off the antifreeze from the system. The plug is located at the bottom point of the radiator (key 17).
- We remove the decorative trim on the instrument panel.
- Remove the top decorative trim above the glove box. Let's take it out.
- We dismantle the metal dashboard support on the driver's side.
- Remove the air pipe.
- Open the stove lid.
- We remove the heater.
- We install a new heater radiator.
- We assemble the structure in reverse order.
Review of Manufacturer Prices
Dimensions: 184x133.5x26 mm.
| Serial number/item | Price in rubles |
| LUZAR 271153553R (original) | From 5000 |
| STELLOX 10-35126-SX | From 4500 – 4700 |
| FENOX RO0004C3 | From 4500 – 4700 |
| RO0003O7 | From 4500 – 4700 |
| AVA QUALITY COOLING RTA6398 | From 4500 – 4700 |
| VALEO 812374 | From 4500 – 4700 |
| NISSENS 76512 | From 4500 – 4700 |
| MAGNETI MARELLI 350218221003 | From 4500 – 4700 |
| *prices are as of May 2021 | |
Reviews
| № | Positive |
| 1 | Andrey (Avtodrom): I’m happy with the heater’s performance, it’s warm in winter, and there’s good air flow in summer. |
| 2 | Sergey (Avtotema): unlike the Lada Grant, the stove on the Lada Vesta is improved, modified, that’s enough for me. |
| 3 | Kirill (Autoreview): in severe frosts, the heater takes a long time to warm up, but then the heat output is maximum. |
| 4 | Alexey (Avtoria): in the third year of operation, I replaced the antifreeze in the system, it suddenly darkened, and a sediment appeared. Comrades say that the quality does not match. |
| 5 | Alexander (Drom): I regularly carry out a technical inspection of the car, there are no problems with the heater. |
| 6 | Stanislav (Driving): my positive review of the Lada Vesta stove, finally the engineers have eliminated the shortcomings and improved the air supply mechanism. |
| 7 | Vasily Alekseevich (“5th wheel”): for five years of using the car, I have not contacted a service station for stove repair. |
| Negative | |
| 8 | Vitaly (Avtotema): in winter, in severe frosts, it does not heat well, there is insufficient airflow from the left deflector. |
| 9 | Svyatoslav (Otzovik.net): The heater motor failed at 40,000 km, fortunately the car is under warranty, it was replaced free of charge. |
| 10 | Vlad (ProAvto): the stove is just like a stove, I can’t say anything special. It seems to me that in Renault Logan the blowing mechanism is implemented better. |
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