Hello, Falls
This may be a known problem.
In R3C00 version, an alarm file is generated when the MU and IMGU are restarted. After the OMU reports an alarm, the OMU does not have the permission to delete the alarm file. As a result, the OMU reports an alarm all the time.
This problem can be solved by upgrading the version.
V1R3C10SPC212 version is recommended.