Owners Manual
Figure 7. 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 eciency, feature set,
health status, and supported voltage. Ensure that both the PSUs are the same.
D Flashing amber Indicates a problem in the PSU.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the
ashing indicator. Swapping the other PSU to make a matched pair can result in
an error condition and unexpected system shutdown. To change from a High
Output conguration to a Low Output conguration or vice versa, you must turn
o the system.
CAUTION: AC PSUs support both 220 V and 110 V input voltages with the
exception of Titanium PSUs, which support only 220 V. When two identical
PSUs receive dierent input voltages, they can output dierent wattages, and
trigger a mismatch.
CAUTION: If two PSUs are used, they must be of the same type and have the
same maximum output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a
mismatch.
E Not lit Power is not connected.
About your system 15