The device of the stove for the VAZ 2114 - the device of the VAZ heater

With the arrival of winter, car enthusiasts often encounter problems with the operation of their heating stove. The VAZ 2114 model is no exception.

The cause of the breakdown can be any part or component of the car's heating element. You can repair the heater yourself, without using the services of a car service, so first you need to understand the principle of operation of the heating system on a VAZ 2114 car.

The heater tap is used to regulate the air supply to the cabin. It is used to regulate the supply of coolant to the heater radiator. The liquid heats up to 95 degrees and heats the air to an elevated temperature, which already enters the cabin. When the heater is on, the heater fan runs, which “drives” air into the cabin.

REASONS FOR VAZ 2114 OVEN MALFUNCTION

The heater on a VAZ 2114 is leaking. In this situation, it is cheaper and easier to purchase a new radiator. Despite the fact that the hole may be small in size, the radiator will no longer be able to fully perform its functionality and fully comply with the presented characteristics. Of course, if you seek qualified help from a specialized service, the malfunction will certainly be eliminated, but this is not a solution to the problem, because a short period of time will pass and the defect will reappear, given that the amount of repair is not so small.
The VAZ 2114 radiator is clogged. In this situation, there is a chance to give the radiator a new life if proper repairs are carried out. But before repairing it, it must be removed. Cleaning can be done using KARCHER or by blowing with compressed air. But this process must be carried out very carefully, because... The radiator may not withstand high pressure and will simply break as a result. And then you will definitely have to buy a new one to replace it.
Motor failure. This problem occurs as a result of a damaged fuse. Solving this problem is quite easy; a failed fuse simply needs to be replaced. But perhaps this is not enough to solve this problem. The question arises, why did the fuse blow? Most likely, a short circuit has occurred in the wiring; to prevent a repeat situation, the best solution would be to “ring” the entire circuit to identify the system flaw and then eliminate it. Otherwise, if things go badly, a short circuit may occur, with negative consequences.

On VAZ 2114 models, the fuse is class F7 and has a current of 30A. It is additionally responsible for the cigarette lighter circuits, built-in lighting in the glove compartment, and heated rear window. If the cause of the malfunction lies in the fuse, this can be determined in the early stages.

If the cause is not the fuse, make sure that the fan is receiving voltage; use a multimeter to check. Or the reason is in the incoming wires indicating a weak contact.

Poor contact inside the mounting block. This is a fairly common drawback of these models. It is imperative to check all available contacts in the unit; there is a possibility of oxidation or poor-quality connection, as a result the circuit breaks, which negatively affects the operation of the fan.
Water in the ignition relay. The radiator starts working when the car is warm, this is directly related to the evaporation of water in the relay, only after this the relay works.
The interior of the VAZ 2114 is poorly heated. Despite the fact that the 2114 stove, according to the first signs, supplies warm air to the cabin, the engine is also heated up to 90 degrees, however, the air in the cabin is not warmed up enough. Here you need to unscrew the side of the torpedo from the passenger side and check the two hoses coming from the stove; if they are cold, then the reason is that they are clogged. It is enough to clean them with simple manipulations.

In what cases is it necessary to replace the motor?

The obvious reason for replacement, as already mentioned, would be a complete failure of operation. You should also think about the need for replacement in cases where the fan makes non-specific noise, for example, it squeals a lot. This may be a consequence of broken blades or defects in the structure itself. Also, often the cause of failure of the stove fan is a banal blockage - this can be understood by the unpleasant smell and excess noise (creaks or rustling inside the unit).

A problem with a fan should be clearly diagnosed, since in one case it may be associated with a direct breakdown of the unit, and in another - with problems with other engineering systems of the car. As a rule, people often confuse a problem with the power supply and a problem with the motor itself. First of all, it is necessary to check the functionality of the electrical circuits and the integrity of the fuses, and then proceed to the direct disassembly of the stove assembly.

TIPS FOR SELECTING A RADIATOR

Let's look at the main nuances when choosing a stove for a VAZ 2114. As you know, the factory-produced VAZ 2114 heater device has a high level of required heat transfer. But the required model is simply not available for free sale; in this case, we purchase what is available. Naturally, the characteristics of a used radiator are absolutely no good, the reason is obvious, in a couple of months you will have to change the radiator again, in a word, you will be throwing money down the drain. In this situation, a better solution would be to overpay a little and purchase a new device.

Based on consumer reviews, radiators from the manufacturer DAAZ are in great demand, because The quality indicators of the produced models are met, the heat transfer parameters are also at their best. As for the material from which the VAZ 2114 stove is made, it is impossible to confidently determine the leader among aluminum or copper radiators. Each has advantageous indicators and certain disadvantages, such as heat transfer characteristics and operating life.

VAZ 2114 OVEN DIAGRAM

The diagram clearly shows the structure of the VAZ 2114 stove:

number 44 is the ventilation motor, 45 is the additional resistance resistor, 46 is the toggle switch for switching speeds. This diagram makes it clear how the VAZ 2114 heater works.

VAZ 2114 stove diagram

To diagnose the performance of the VAZ stove, you must apply the following steps:

We turn on the VAZ 2114 heater with switch (1) to the 1st, then 2nd and 3rd speed modes. Lever (2) and (4) adjust the desired air direction, and the last one (4) has the function of selecting the air temperature. It also happens that even some people do not know how to turn on the heater on a VAZ 2114.

VAZ 2114 stove diagram

If there are no signs of operation, therefore, the fan does not turn on at all. But if the radiator shows signs of operation at some speeds, therefore, the reason is not a fan malfunction, but possibly a resistor (additional), or the VAZ 2114 interior heater does not respond to the switch. If the fan is running at full power and the temperature is set to the maximum when the engine is fully warmed up, and cold air comes from the air duct. This is likely the cause of a clogged heater radiator.

When Rework Is Needed

This situation often happens: when trying to reduce the temperature, hot air blows from the torpedo. But from the air ducts located on the sides, a cold flow of air flows onto the windshield. Necessary:

1. Remove the side cover of the torpedo on the gas pedal side. Here you will find the throttle cable. It is secured with a clamp. Loosen it and, pulling the cable down, fix the clamp again. Now you need to set the damper control levers. Left - to the right, and right - to the left. The crane control lever itself must be set all the way to the right. At this moment, warm air should come out of the side holes.
2. The second stage of tuning is to ensure that outside air passes through the heater. Since one engine is responsible for the operation of the damper and the tap, it is necessary to block its control of the damper. Remove the dashboard cover on the right side and disconnect the temperature control cable from the engine. There are two of them here. Disconnect and tighten the one on the right. At this moment the damper should be in its maximum position. Bend the tensioned cable at the attachment point and cut off the excess length.

HOW TO CARRY OUT WORK TO REPLACE THE VAZ 2114 OVEN (REPLACING THE RADIATOR)

The heating of the VAZ 2114 is replaced as follows, first you need to drain the cooling liquid from the system, only after this simple manipulation is the panel (instrument) removed in order to easily get to the radiator. To save operating time, it is possible to detach only part of the panel, in the area of the glove compartment and console. It is better to carry out this procedure together, so that one person pulls the panel as necessary, and the second removes the radiator. But there is another method: remove the panel fastenings from both sides, and then carry out the procedure of loosening the brackets. As a result, you can easily replace the VAZ 2114 stove with a new one. But do not forget to disconnect the wires first. The next step will be to remove the nuts that secure the radiator to the body, and further loosen the clamps that secure the pipes. That's all, further replacement is carried out in the reverse order.

Car electrical equipment

1 — headlight block; 2 — gearmotors for headlight cleaners*; 3 — fog lights*; 4 — ambient temperature sensor; 5 — sound signals; 6 — engine compartment lamp switch; 7 — electric motor of the cooling system fan; 8 — VAZ 2114 generator; 9 — low oil level indicator sensor; 10 — washer fluid level sensor; 11 — front brake pad wear sensor; 12 — wire tips connected to the common windshield washer pump**; 13 — windshield washer pump; 14 — headlight washer pump*; 15 — wire ends for connecting to the rear window washer pump on VAZ 2113 and VAZ 2114 cars; 16 — low oil pressure indicator sensor; 17 — engine compartment lighting lamp; 18 — wire lug for connection to the wiring harness of the engine management system or to the wiring harness of the ignition system on carburetor vehicles; 19 — windshield wiper gearmotor; 20 — VAZ-2114 starter; 22 — coolant temperature indicator sensor; 23 — reversing light switch; 24 — low brake fluid level indicator sensor; 25 - battery; 26 — sensor for insufficient coolant level indicator; 27 — relay for turning on fog lights; 28 — mounting block; 29 — brake light switch; 30 — plug socket for a portable lamp; 31 — lamp for illuminating the headlight hydrocorrector scale; 32 — parking brake warning lamp switch; 33 — backlight lamp connection block; 34 — switch for instrument lighting lamps; 35 — steering column switch; 36 — alarm switch; 37 — front seat heating element relay; 38 — ignition switch VAZ 2114; 39 — rear fog light circuit fuse; 40 — fuse for the front seat heating elements circuit; 41 - door lock circuit fuse; 42 — front ashtray illumination lamp; 43 — ignition relay VAZ-2114; 44 — cigarette lighter; 45 — glove box lighting lamp; 46 — glove compartment lighting switch; 47 — heater fan electric motor; 48 — additional resistor of the heater electric motor; 49 — heater fan switch; 50 — heater switch backlight; 51 — lamp for illuminating the heater levers; 52 — gear motors for electric windows of the front doors; 53 — right front door power window switch (located in the right door); 54 — gearmotors for locking front door locks; 55 — wires for connecting to the right front speaker; 56 — gearmotors for locking rear doors; 57 — wires for connecting to the right rear speaker; 58 — door lock control unit; 59 — wires for connecting to radio equipment; 60 — headlight cleaner switch; 61 — rear window heating element switch; 62 — relay for turning on rear fog lights; 63 — block for connection to the heating element of the right front seat; 64 — switch for rear fog lights: 65 — switch for the heating element of the right front seat; 66 — fog lamp switch; 67 — switch for external lighting lamps; 68 — left front seat heating element switch; 69 — block for connection to the heating element of the left front seat; 70 — wires for connecting to the left front speaker; 71 — left front door power window switch; 72 — right front door power window switch; 73 — wires for connecting to the left rear speaker; 74 — side direction indicators: 75 — lamp switch on the front door pillars; 76 — lamp switch on the rear door pillars; 77 — lampshade; 78 — canopy for individual interior lighting; 79 — block for connecting to the wiring harness of the VAZ 2114 electric fuel pump; 80 — trunk light switch; 81 — instrument cluster: 82 — trunk lighting lamp; 83 — display unit of the on-board control system; 84 — trip computer (not in all models); 85 — block for connecting the wiring harness of the engine control system; 86 — rear external lights of the VAZ-2114; 87 — rear internal lights; 88 — block for connection to the rear window heating element; 89 — license plate lights; 90 - additional brake signal located in the spoiler.

In the instrument panel wiring harness, the second ends of the white wires are brought together into one point, which is connected to the instrument lighting switch (except for the white wire, from plug “4” of block “X2” of mounting block 28 to display block 83 of the on-board control system). The second ends of the black wires are also brought together to points connected to ground. The second ends of the yellow wires with a blue stripe are brought together to a point connected to plug “4” of the “X1” block of the mounting block. The second ends of the white wires with a red stripe are brought together to a point connected to plug “10” of the “X4” block of the mounting block. And the second ends of the orange wires are also brought together to a point connected to plug “3” of the “X4” block.

REPAIR OF OVEN VAZ 2114

To repair the stove, it is necessary to remove it and then make the necessary adjustments.

VAZ 2114 stove diagram

Before removing the heater (1), be sure to remove the wire going to ground, and the coolant must be drained in advance.
Carefully remove the dashboard, and with careful movements disconnect the air duct (19) through which air enters the car interior.
The next step of the work will be to conduct an audit of the electrical system: checking the wires of the resistor (18), fan, electric motor (2), hoses of the outlet valve (13 and inlet valve (12).
On the shield, 2 nuts securing the tap are removed in sequence.
Carefully remove the seal from the tap pipes.
The nuts securing the stove to the body are removed.
As a result, the heater can be removed.
After making the necessary adjustments, installation is carried out using the same method but in reverse order.

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CHANGING THE CABIN FILTER OF VAZ 2114

The air inside the cabin without using a filter will be filled with road dust and exhaust gases; it is clear that this will negatively affect the health of the driver and passengers. The immediate function of a car filter is to purify the air entering the cabin. As a result, it is susceptible to rapid contamination, and there is absolutely no benefit from such a filter. It only makes it difficult for air to get to the heater. For this reason, the filter must be replaced. This procedure is available for DIY replacement. First, dismantle the brush holders and the windshield wiper system, then remove the grille (plastic). After this, the nuts securing the plastic cover are removed, resulting in a small hole being freed. The filter is not attached to anything, so there should not be any problems in removing it, and replace it with a new one in the same way. All parts are mounted in place.

CONCLUSION

The procedure for replacing a VAZ 2114 stove is quite simple. The main point is the timely replacement of pipes and clamps if they are not suitable for further use.

After carrying out repair or maintenance work, do not forget to refill the system with coolant.

At the end of the work, when you start the engine, the stove should cope with the heating function perfectly. If the opposite happens, there is most likely an air lock.

During repairs, the vehicle must be kept on the handbrake. If the car was running before starting repair work, then the radiator will be very hot, so wait a little.

If you understand that you cannot cope with this work, please contact the service department.

How to prevent the problem

The main reason for the failure of the stove fan itself is poor quality assembly. You should not skimp on such parts, and if a problem does occur, it is better to buy a high-quality unit with a manufacturer’s warranty. Such units are designed to operate under a wide temperature difference, but some manufacturers do not pay attention to quality and release stoves onto the market with a very low coefficient of resistance to temperature changes. We advise you not to skimp on this car part and purchase truly reliable components from trusted suppliers.

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