The log file was available for investigation.It revealed, that the vent failure occurred, after a leak test, during switch to standby and not, during use on a patient as reported.The ventilator detected a wrong motor position (code 14.1499) and forced an autonomous shutdown to safety mode.The appropriate ventilator fail alarm was given.Manual ventilation remained available, as specified.During inspection, the light barrier cable was found to be faulty.The cable was replaced.The device reacted as specified with an autonomous shutdown of the ventilator and alarmed audible and visible for ventilator fail.Manual ventilation remained available, as specified.
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