Dell NX430 Owner's Manual page 17

Figure 7. AC PSU status indicator
1. AC PSU status indicator or handle
Table 9. Redundant AC PSU status indicator
Convention Power Indicator
Pattern
A Green
B Flashing green
C Flashing green
and turns off
D Flashing amber
Condition
A valid power source is connected to the PSU and the PSU is
operational.
When the PSU firmware 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. For more
information, see Dell Lifecycle Controller User's Guide at
Dell.com/idracmanuals.
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. Ensure that both the PSUs are the same.
Indicates a problem in 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.
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