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Pinched VAV flow tubing can make the controller read wrong or not read at all. Lower/relocate the box enough to protect the tubing and replace damaged lines.
['VAV flow pickups need clean pressure signal through small tubing. If the box is jammed into a beam/deck and the tubing is flattened, controls may think the airflow is zero, high, or unstable.', 'Lower or shift the box only with direction, protect the tubing path, trim/replace flattened tubing, reconnect to the correct ports, and have controls/TAB verify readings before ceiling close.']
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