Hello! Based on the information you provided, it seems like there might be a false positive error message for the power supply units (PSUs). Since you mentioned you are using firmware version 4.1g, I would recommend taking the following steps to resolve this issue:
1. Double-check the firmware version to ensure it is updated to the latest recommended version. You can find the latest firmware versions for your server here: https://www.cisco.com/c/en/us/support/servers-unified-computing/ucs-c220-m4-rack-server/model.html
2. Clear the logs in CIMC to see if the error messages persist. You can do this by navigating to the "Admin" tab in the CIMC web interface, then going to "Utilities" and selecting "Clear SEL (System Event Log)".
3. Perform a power cycle on the server by shutting it down completely, unplugging both PSUs, waiting for a minute, and then plugging them back in and powering the server back up.
4. If the issue persists, try updating the firmware for the power supplies themselves, as this might resolve the issue. You can refer to the release notes for the firmware version you are using to see if there are any known issues with the power supply firmware.
5. If none of the above steps resolve the issue, consider opening a support case with Cisco TAC to further investigate the problem. They might request additional information or logs to help diagnose the issue and provide a solution.
Keep in mind that if the server is running without any issues and the power supplies are actually providing power, this might just be a false positive error message that can be safely ignored. However, it is always a good practice to investigate and resolve any error messages to ensure the continued reliable operation of your server.
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