In the up direction, if a door is opened it will change from high speed to level speed and stop at the next floor. In the down direction if a door is opened it stops as it should right away. Operates the same condition if the start of the door circuit at pit switch, top of car switch is opened. When an up call is placed, door circuit is opened and running at leveling speed, if the contacts of INR 16/15 are opened it stops as it should, right away. The down circuit is fed by same contacts of INR 16/15, but, in down direction it stops as it should right away when the door circuit is opened. I am overlooking something.