The replaced parts were available for investigation.Non of the parts showed signs of burn or increased heat development.When tested in a lab device the pba blower a500 showed at least one faulty hall sensor.During a test run of the pba ther.Contr.Unit m16.2 in a lab device in total 5 reboots of less than 15 seconds were observed, but no cycling reboot.No hardware failures could be found.Although no specific hardware failure could be identified, the therapy control unit m16.2 can be regarded as cause for the (cycling) reboot.The subsequent blower failure was caused by a faulty hall sensor signal.The power supply (m7.3) was found to be fully functional.In case of a reset of the processors of the therapy control unit m16 therapy is discontinued for a maximum of 15 seconds, before therapy will be resumed with the latest valid settings.If for any reasons therapy was not restarted within 15 seconds an acoustical alarm will be given.Manual ventilation remains possible.
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