Why the stove on the VAZ 2109 does not heat well - high, low panel
Owners of domestic cars, including the VAZ-2109, are familiar with such a problem when the stove heats up very well in summer, but cold air comes out of the deflectors in winter. Riding in a cold cabin is not only not pleasant, but also harmful to the body, besides, the stove does not do its main job - the flow of warm air does not blow on the windshield and side windows, which is why they constantly fog up.
There are many reasons why the stove on the VAZ 2109 does not heat up, and in order to fix the problem, you need to know the principle of operation of the heater, its device, as well as all possible breakdowns and causes of poor heating.
The principle of operation of the interior heater on the example of the VAZ-2109
Essentially, the heater stove is an ordinary heat exchanger. The heating system is connected to the engine cooling system through the heater tap. When you turn on the stove, the faucet opens and coolant flows into the stove radiator.
The coolant temperature is 70-90 degrees.
Passing through the tubes of the radiator, the liquid is cooled and this process is accompanied by the release of heat.
An important element of the VAZ-2109 stove is a fan that can operate in three modes. The fan directs the heated air into the nozzles, and the driver and passengers can already adjust the direction of the flow using the handles in the deflector. Air is also supplied to the windshield and side windows.
When the driver moves the stove control knobs on the instrument panel, he either completely closes the damper and the supply of warm air stops, or he moves the handle to the extreme right position and all the heated air enters the passenger compartment through the tubes. If the middle position is selected, then part of the air flow passes over the radiator and heats up, and part simply passes by.
Main causes of breakdowns
Since the stove is connected to the engine cooling system, the device of which we previously wrote on our Vodi.su autoportal, heating problems may be related to:
- with a low level of antifreeze or antifreeze;
- with clogged cooling radiator tubes;
- with air pockets in the SOD - you need to unscrew the cap of the radiator or tank and let the engine run at low speed for a while.
Any other breakdowns of the SOD also affect the operation of the interior heater stove.
The weak point is also heater tap, through which antifreeze enters the stove radiator. The faucet may leak, so it is advisable to replace it with a new one. Due to poor-quality antifreeze, cracks may appear on rubber tubes over time.
In addition, you need to monitor the condition of the coolant pump, which is responsible for the circulation of antifreeze in the system.
Also, the cause of heating problems should be sought in the electric motor that drives the stove fan. If you hear extraneous sounds when the electric motor is running, this may indicate problems. The electric motor may overheat due to blown fuses. If warm air does not come out of the stove at low speeds, then the problem is most likely with the electric motor or with the electrical circuit of the VAZ-2109 stove.
It is very important to monitor the condition of the heater core. It also clogs over time, due to which the liquid does not flow in full. It is enough to simply remove the radiator and flush it, in extreme cases you can buy a new one - it is not too expensive and is available in almost any store.
Another very common problem is loose flap. Because of this problem, cold air from the street can enter the passenger compartment, but at the same time, warm air blows over the area of \uXNUMXb\uXNUMXbthe legs of the driver and passengers.
Solving this problem is quite simple - you need to adjust the correct position of the damper using the damper control lever. This lever is located next to the gas pedal. You need to tighten the cable going to the damper with pliers - just make two turns around the head of the bolt that attaches the cable to the control lever.
If this does not help, then this means that gaps and cracks have formed between the joints of the pieces of foam rubber or in the plastic. You can seal them either with sealant, or change the old insulation to a new one.
Tips for caring for the VAZ-2109 heating system
In order to avoid getting cold in the interior of your car with the onset of cold weather, follow these simple tips.
First, it is necessary to clean the heater core from internal contaminants that accumulate over time.
Secondly, fill the cooling system with only high-quality antifreeze and only the one recommended by the manufacturer. Do not forget that due to low-quality antifreeze, growths form inside the radiator.
Third, check if the thermostat is functioning properly. This device is used to maintain a constant temperature in the system. If it starts to wedge, the liquid stops flowing to the stove radiator, and the engine itself starts to overheat.
Periodically, you need to monitor the condition of the fan bearing, it needs to be lubricated with oil from time to time. If you yourself can not decide on the reasons, you need to contact the specialists in a car service.
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