Figure 23. AC PSU status indicator
1
AC PSU status indicator/handle
Table 28. AC PSU status indicator codes
Power indicator codes
Condition
Green
A valid power source is connected to the PSU, and the PSU is
operational.
Blinking amber
Indicates a problem with the PSU.
Not illuminated
Power is not connected to the PSU.
Blinking green
When the firmware of the PSU is being updated, the PSU handle
blinks 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.
Blinking green and turns off
When hot-plugging a PSU, the PSU handle blinks green five times
at a rate of 4 Hz and turns off. This indicates a PSU mismatch
concerning efficiency, feature set, health status, or supported
voltage.
CAUTION:
If two PSUs are installed, both the PSUs must
have the same type of label; for example, Extended Power
Performance (EPP) label. Mixing PSUs from previous
generations of PowerEdge servers is not supported, even
if the PSUs have the same power rating. This results in a
PSU mismatch condition, or failure to turn on the system.
CAUTION:
When correcting a PSU mismatch, replace only
the PSU with the blinking indicator. Swapping the 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
conversely, you must turn off the system.
CAUTION:
AC PSUs support both 240 V and 120 V input
voltages except for Titanium PSUs, which support only
240 V. When two identical PSUs receive different input
voltages, they can output different 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.
System diagnostics and indicator codes
37