Table 10 AC PSU status indicator codes (continued)
Power indicator
codes
Condition
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 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 appliance 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 appliance shutdown. To
change from a high output configuration to a low output
configuration or vice versa, you must turn off the appliance.
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.
Overview
Power supply unit indicator codes
17
