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Figure 6. AC PSU status indicator
1. AC PSU status indicator/handle
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.
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 that there is a PSU mismatch
with respect to efficiency, feature set, health status, and supported
voltage. Replace the PSU with a PSU that matches the capacity of
the other PSU.
CAUTION: For AC PSUs, use only PSUs with the Extended
Power Performance (EPP) label on the back. Mixing PSUs from
previous generations of Dell PowerEdge servers can result in a
PSU mismatch condition or failure to power 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 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 power down the system.
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