It was reported that during use, the machine of usnf-0024 suddenly gave an alarm "ventilator failure, check apl valve", and the machine was unable to operate normally.Upon inspection, an error code was found reporting "v044, v041".No patient injury.In case of a ventilator failure during automatic ventilation, the ventilator initiates an autonomous shutdown while changing mode to man/spont (safety mode) and generating the appropriate ventilator fail alarm.Manual ventilation remains possible.All alarms, possible causes and remedies as well are described in the instructions for use.As the repair has not be completed and the part was not returned for further investigation, it is not confirmed the root cuase.Once the part was returned , the investigation will be updated accordingly.
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