Owners Manual

Indicator codes for redundant power supply unit
Each AC power supply unit (PSU) has an illuminated translucent handle that indicates whether power is present or whether a power fault
has occurred.
Figure 8. AC PSU status indicator
1
AC PSU status indicator or handle
Table 9. Redundant AC PSU status indicator
Convention Power Indicator
Pattern
Condition
A Green A valid power source is connected to the PSU and the PSU is operational.
B Flashing green When the PSU rmware is being updated, the PSU handle ashes green.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating
rmware. If rmware update is interrupted, the PSUs will not function. You must
roll back the PSU rmware by using Dell Lifecycle Controller. For more
information, see Dell Lifecycle Controller User’s Guide at Dell.com/idracmanuals.
C Flashing green and
turns o
When hot-adding a PSU, the PSU handle ashes green ve times at 4 Hz rate and turns
o. This indicates that there is a PSU mismatch with respect to eciency, feature set,
health status, and supported voltage.
CAUTION: For AC PSUs, use only PSUs with the Extended Power Performance
(EPP) label on the back.
NOTE: Ensure that both the PSUs are of the same capacity.
NOTE: Mixing PSUs from previous generations of Dell PowerEdge servers can
result in a PSU mismatch condition or failure to turn the system on.
D Flashing amber Indicates a problem in the PSU.
14 About your system