Dell PowerEdge XE2420 EMC Installation and Service Manual - Page 169

Table 79. AC PSU status indicator codes continued, Combining AC and DC PSUs is

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Table 79. AC PSU status indicator codes (continued) Power indicator codes Condition and an unexpected system shutdown. To change from a high output configuration to a low output configuration or vice versa, you must power 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. Table 80. DC PSU status indicator codes Power indicator codes Green Blinking amber Not powered on Blinking green Condition Indicates that a valid power source is connected to the PSU, and the PSU is operational. Indicates an issue with the PSU. Indicates that the power is not connected to the PSU. When hot-plugging a PSU, it blinks green five times at a rate of 4 Hz and powers off. This indicates a PSU mismatch due 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 power on the system. CAUTION: If two PSUs are used, they must be of the same type and have the same maximum output power. CAUTION: When correcting a PSU mismatch, replace the PSU with the blinking indicator. Swapping the PSU to make a matched pair can result in an error condition and an unexpected system shutdown. To change from a High Output configuration to a Low Output configuration or conversely, you must power off the system. CAUTION: Combining AC and DC PSUs is not supported. System diagnostics and indicator codes 169

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Table 79. AC PSU status indicator codes (continued)
Power indicator codes
Condition
and an unexpected system shutdown. To change from a high output configuration to a
low output configuration or vice versa, you must power 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.
Table 80. DC PSU status indicator codes
Power indicator codes
Condition
Green
Indicates that a valid power source is connected to the PSU,
and the PSU is operational.
Blinking amber
Indicates an issue with the PSU.
Not powered on
Indicates that the power is not connected to the PSU.
Blinking green
When hot-plugging a PSU, it blinks green five times at a rate
of 4 Hz and powers off. This indicates a PSU mismatch due 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 power on the system.
CAUTION:
If two PSUs are used, they must be of the
same type and have the same maximum output
power.
CAUTION:
When correcting a PSU mismatch, replace
the PSU with the blinking indicator. Swapping the
PSU to make a matched pair can result in an error
condition and an unexpected system shutdown. To
change from a High Output configuration to a Low
Output configuration or conversely, you must power
off the system.
CAUTION:
Combining AC and DC PSUs is not
supported.
System diagnostics and indicator codes
169