A ventilator was returned to a third party service center for evaluation.There was no harm or injury reported.During the evaluation of the device at a third party service center, the battery charging limit was found to be set to less than 100%.The device was recalibrated to address the issue.During evaluation, the device failed a test step.The sensor board was replaced to address the issue.The sensor board only was returned to the manufacturer's quality assurance laboratory for further investigation.During the investigation, the root cause of the sensor board failing was due to flow sensor (mt5) being out of tolerance.
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