Blinking amber light indicates a shorted or tripped damper motor circuit. I would check to see if there's power to the damper motor if there is check to see if damper is jammed and not allowing full motion of damper. If there isn't find out why and restore it. Then test zone for proper and full motion.
This link may help.
http://www.manualsdir.com/manuals/97192/honeywell-truezone-hz322.html?page=2
×