PowerEdge 17th Generation Servers with Delta Power Supplies may not show correctly in iDRAC UI and SEL logging after AC cycle

Post-AC cycle affected Delta 17G Power Supplies may function but display blank iDRAC telemetry, firmware, and Dell Part numbers of fields. However, performing another AC or virtual AC cycle after this state occurs triggers incorrect configuration or capacity mismatch errors in the SEL.

After an AC or virtual AC cycle, iDRAC UI may miss power supply info and SEL may log PSU configuration or capacity mismatches (PWR2265/PWR2267/UEFI0059).

We identified that is Power Supplies limitation caused the loss of communication in a corner case, leading to the bus hang.

Do not replace any hardware, this issue is not a hardware failure and can be resolved with Power Supply firmware updates. 
Note: If a PSU mismatch occurs, unplug AC power and reseat the PSU after 2 minutes. Once remediated, update PSU firmware in line with the following information.

The following chart lists the Dell Part Numbers (DPN) and Firmware Version required to resolve this issue.

The above firmware versions are available on each system model’s download page from the Dell Support site.