Heating problem

First, giving the S thanks in advance
I have a problem in my BMW E36 320i CUPE carries the air conditioner and when putting the heating it turns on everything perfectly but there is no hot air, I do not know if the valve will be the fan or I who know that I wait for some idea where to start

pd, I do not know if this post will be well

Hello constrictor. You have to check the heating valves next to the left shock absorber turret. If you fail you do not let the motor water pass to the heating radiator. Still check the fuses.
That there is luck ...