AC power supply
units (PSUs) have an illuminated translucent handle that serves as
an indicator and DC PSUs have an LED that serves as an indicator.
The indicator shows whether power is present or a power fault has
occurred.Figure 1. AC PSU status
indicator
AC PSU status
indicator/handle
Table 1. AC PSU status
indicator codesThis table describes the AC PSU status indicators
and what condition is the PSU when the power indicator light is green,
blinking amber, blinking amber, not illuminated, blinking green, and
blinking green and turns off.
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 cord 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 with respect to 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 the system on.
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 vice versa,
you must turn off the system.
CAUTION AC PSUs
support both 240 V and 120 V input voltages with the exception of
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.
CAUTION Combining AC and DC PSUs is not supported and triggers
a mismatch.
Figure 2. DC PSU status
indicator
DC PSU status
indicator
Table 2. DC PSU status
indicator codesThis table describes the DC PSU status indicators
and what condition is the PSU when the power indicator light is green,
blinking amber, not illuminated, and blinking green.
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 hot-plugging a PSU, the PSU indicator blinks
green. This indicates that there is a PSU mismatch with respect to
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 the system on.
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 vice versa,
you must turn off the system.
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.
