Reference Guide

Figure 5. AC PSU status indicator
1. AC PSU status indicator/handle
Table 12. AC PSU status indicators
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 firmware of the PSU is being updated, the PSU handle flashes green.
CAUTION: Do not disconnect the power cable or unplug the PSU when
updating firmware. if firmware update is interrupted, the PSUs do not
function.
C Flashing 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 a PSU mismatch with respect to efficiency, feature set, health status,
and supported voltage.
CAUTION: If four PSU are installed, the four PSUs must have the same type
of label; for example, Extended Power Performance (EPP) label. Mixing PSU
from previous generations of PowerEdge servers is not supported, even if
the PSU has same power rating. This results in a PSU mismatch condition or
failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only PSU with the
blinking indicator. Swapping the PSU to make 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: The 120 V AC PSU is not recommended for this system. Operating
at 120 V AC results in the 2400W PSU de-rating to only 1400W, which can
affect power redundancy policy and possibly system throttling.
CAUTION: If four PSUs are used, they must be of the same type and have the
same maximum output power.
D Flashing amber Indicates a problem with the PSU.
E Not illuminated Power is not connected to the PSU.
System diagnostics and indicator codes 13