On-site, the service technician was able to reproduce the reported ventilator failure and traced it back to the processor board.The board was replaced consequently.The electronic log file was submitted for further analysis.The entries found within the log substantiated the technician¿s assumption of the processor board being the root cause of the reported vent fail.In case of such failure, the fabius will stop automatic ventilation and post a corresponding visible and audible alarm.Manual ventilation and monitoring will remain available to continue the case.The failure rate of the processor board is considered inconspicuous.The number of similar cases, related to the same root cause, is within the expected range of the respective risk assessment and thus accepted.
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