The ventilator was investigated on site, the problem was reproduced and the air gas module was replaced and returned for investigation.Simulated use testing of the returned air gas module could reproduce the described customer issue.No device log files have been received.Our investigation has concluded that the reported problem was caused by a defective pressure transducer on a printed circuit board inside the gas module.The pressure transducer is part of the flow measuring in the gas module.The failure of the pressure transducer leads to inaccurate gas flow regulation which will be detected during pre-use check and alarms will be activated if the failure occurs during ventilation.
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