The hcu 30 showed the error '5004-2' and '1004-2'.According to the describe event or problem grid the field service technician (fst) reconnected the connections on the control board and power supply board.The fst adjusted the mains side actuator.All function tests passed.The most probable root cause for the failure '5004-2' were loose connections on the control board or power supply board.The most probable root cause for the failure '1004-2' were wrong setting of the 3-way valve (actuator).Thus the reported failures '5004-2 and 1004-2' can be confirmed.The failures occurred during start up of the device.The hcu 30 which was used, was responsible for this complaint.The occurrence rate was calculated for the reported issue, and it was determined that this is not a systemic issue.Therefore, no remedial action is required.The occurrence rate related to the reported issue is currently being monitored as part of maquet cardiopulmonary¿s trending program, additional investigations, or corrections will be implemented in case of adverse trending.
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