Basic heater operation: Engine coolant rises to approx 180 degrees in
engine block. Thermostat opens allowing heated coolant to flow through
system into radiator and heater core (works like a small radiator). Blower
motor fan blows air past heater core thus making heat.

"Feadl" > wrote in message
news
> Hi,
>
> I have the problem that the heater of my Mazda 323 / 1993 doesn´t work
> properly.
> Does anybody know how the heating system works or where I can get
> information about it?
>
> Thanks
> Feadl
>
>
>