Redundant power supply unit indicator codes
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 10. AC PSU status indicator
1. AC PSU status indicator/handle
Table 11. AC PSU status indicator
Convention
Power Indicator
Pattern
Description
A
Green
A valid power source is connected to the PSU and the PSU is operational.
B
Flashing green
When the firmware of the PSU is being updated, the PSU handle flashes green.
CAUTION:
Do not disconnect the power cord or unplug the PSU when
updating firmware. If firmware update is interrupted, the PSUs will not
function. You must roll back the PSU firmware by using Dell Lifecycle
Controller. See
Dell Lifecycle Controller User’s Guide
at Dell.com/
idracmanuals.
C
Flashes green and
turns off
When hot-adding a PSU, the PSU handle flashes green five times at 4 Hz rate and
turns off. This indicates that there is a PSU mismatch with respect to efficiency,
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 with the PSU.
CAUTION:
When correcting a PSU mismatch, replace only the PSU with
the flashing 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 configuration to a Low Output configuration
or vice versa, you must turn off 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
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Dell PowerEdge T430 system overview
