Let's not confuse the air conditioning , heating and ventilation of your Volkswagen 411. Heating and air conditioning are devices that give the possibility of lowering or increasing the temperature. The first with the help of the heat produced by the engine block, and the second with the help of a fluid refrigerant . Your ventilation is all of the ducts and devices that allow air to enter the vehicle. The essential element is the kicker which sends air into your cabin. In the event that the air arrives little or not at all, it is probably a ventilation malfunction. We will discover in this file how a ventilation works, to be able to better identify the concerns and assimilate by what means to remedy them.
How a ventilation works on a Volkswagen 411
The ventilation is used first to regenerate the air in the interior of your Volkswagen 411. As for the blower, the latter is often composed of a resistor, a turbine, and a motor. The lower the total resistance of the electrical system, the faster the turbine runs. By rotating the switch in the vehicle, the resistance is therefore reduced.
Volkswagen 411: frequent ventilation problems
Dirty air ducts
If the ventilation works but a small amount of air arrives in the interior of your Volkswagen 411, it is likely that these air flaps are blocked. With the aid of screwdriver flat, you can disassemble the air flap valves. Just look in there if they are blocked. If this is what is happening you can dust them, as well as the shutters.
Dirty cabin filter
If you perceive effluxes and the ventilation is weak, the malfunction probably comes from the cabin filter of your Volkswagen 411. The latter becomes blocked and piled up with bacteria with time. It's really normal that it is dirty, it is used to purify the air that reaches you. There is no manufacturer's recommendation as to when to change it. We simply advise you to disassemble it, look at its condition. If it is completely dirty, it will need to be changed.
Resistance of the blower HS
If ever the ventilation control of the Volkswagen 411 does not work well, or even really does not, it is probably related to the resistance. This resistance is used to increase the voltage to be able to increase the speed of this turbine. A strange malfunction of ventilation is probably linked to a resistance malfunction. This microchip is difficult to repair. It must be changed.
HS blower motor
There are two fairly recurring concerns about the kicker. The brushes may be worn out. Over the years, they can wear out and cause false contact. Your fan may run randomly, and may even stop working at all. The malfunction may also come from bearings of the motor. If the ventilation whistles, like a rusty mechanic, its bearings may lack lubrication. Do not hesitate to comment on this file if your dysfunction is different in order to help our readers. See you soon!