G4: 05feb2020.B4: (b)(6) 2020.A gas delivery system (gds) assembly was returned for failure analysis.A visual inspection of the returned component was performed, no notable conditions were found.An investigation was performed and the product analysis technician reported that the root cause was isolated to a defective u1 on the air flow sensor board.Submission of a report does not constitute an admission that medical personnel, user facility, importer, distributor, manufacturer, or product caused or contributed to the event.
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