Do not confuse the air conditioning , heating and ventilation of this Citroen Sm. Heating and air conditioning are mechanisms that will reduce or increase the temperature. The very first thanks to the heat emitted from the engine block, and the other with a liquid refrigerant . The famous ventilation is all of the channels and devices that will allow air to reach the interior of the vehicle. The fundamental component will be kicker which emits air into your vehicle. In the event that little or no air is supplied, this is probably a ventilation malfunction. We will see in this post how a breakdown works, in order to better identify the problems and assimilate by what means to resolve it.ventilation-problem-Citroen-Sm

How does ventilation work on a Citroen Sm

The ventilation is used first to circulate the air in the passenger compartment of this Citroen Sm. As for the pulser, this generally consists of a resistor, a turbine, and a motor. The more the integral resistance of the electrical system is reduced, the faster the turbine operates. By turning the button in the vehicle, the resistance is therefore reduced.

Citroen Sm: common ventilation problems

Dirty air ducts

If the ventilation works but little air reaches the passenger compartment of this Citroen Sm, it is conceivable that your air shutters are blocked. Using a screwdriver flat, do not hesitate to disassemble the air shutter covers. Just check inside if they are cluttered. When it is the case do not hesitate to scour them, as well as the valves.

Dirty cabin filter

If you perceive fumes and the ventilation lacks intensity, the malfunction probably comes from the cabin filter of this Citroen Sm. It gets dirty and piles up bacteria with time. It is completely normal that this one is dirty, it is there to filter the air which reaches us. There is no manufacturer's recommendation on when to change it. It is advisable simply to dismantle it, look at its condition. In case it is completely dirty, it will be necessary to replace it.

Resistance of the blower HS

If the ventilation controls on your Citroen Sm do not work well, if not really, it is probably due to the resistance. This resistance is used to raise the voltage in order to amplify the speed of the turbine. A bizarre ventilation malfunction is probably related to a resistance malfunction. This microchip is difficult to troubleshoot. It will have to be replaced.

HS blower motor

There are several relatively common problems with the kicker. The brushes are damaged. Over the years, they will be able to be damaged and cause false contact. The fan may run randomly, or stop working at all. It is also possible that the malfunction is due to bearings of the fan motor. If the ventilation makes a high-pitched noise, such as rusty mechanics, the bearings may lack lubrication. We invite you to comment on this post if your dysfunction is different to help our readers. See you soon!