It was reported that ventilator failure during usage, and sometimes the device had automatically switched from manual mode to standby no patient injury reported.After log analysis, two errors and recommendation were given as below.1.2023 (b)(6) 09:43:13 pressure sensor blocked or not connected.This may be caused by a blocked gas supply line, please help by checking that the supply line is properly connected to the negative pressure sensor on the pba board and that the supply line is not bent.2.2023 (b)(6) 09:43:13 incremental encoder error.This fault could lead to malfunction of the motor, and may cause the failure of mechanical ventilation mode.Please perform the ventilator test in the hit software.Attempt to carry out a referencing on the hit page "a350 core unit/ventilator and breathing system/ventilator" from the description of the service engineer, no more actions they have done and no failure reproduced anymore.No more investigation could be done due to lack of more information.The root cause was not confirmed.
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