My 3 year old Amana

Question

My 3 year old Amana is giving me some serious issues. I have had 5 servicemen over now who haven't been able to fix it. The problem seems to be that after a successful heating, the inducer blower does not turn off. The unit is then unable to fire again. At this point I get the double blink from the control module that translates to "Low fire pressure switch stuck closed" Any Ideas? Help!