Model #KIRD801HSS0, this is a downdraft vent assembly that has a telescoping inlet so it can be flush with the counter top when down and raises when you have venting needs. This unit would continuously cycle up and then back down when the up/down button was pressed. I took the unit apart so I could get to the limit switches with stop the unit at the upper and lower limits of travel to find an open, non-functional switch. I replaced the failed micro switch with a new one and it now tests OK.
Model Number: KIRD801HSS0