Vertiv MPH2 Installer/User Manual page 46

Table B.2 Line LED Troubleshooting
LED INDICATION
(ONE OR ALL LEDS)
STATE/
COLOR FLASH
SPEED
Green Steady On
Off NA
Red Steady On
Red Fast
Green Slow
Green/Red Fast
Vertiv | Vertiv™ MPH2 Rack PDU Installer/User Guide
AUDIBLE
CONDITION STATUS/RECOMMENDED ACTION
ALARM
Normal Operation
— None
Note: Depending on plug type, not all LEDs may be lit, see
Plug Type
Confirm that the LED is active per
— Voltage Off Check power source and input plug's receptacle wiring.
Check receptacle power control settings.
Check power source for power quality problem. If the MPH2™ Rack PDU uses 3-phase
Line
power, a single low-voltage phase may cause one or more undervoltage alarms. The
ü
Undervoltage
undervoltage alarm is factory-set to -10% of the minimum input voltage range on the
Alarm
nameplate; it cannot be changed.
Check for changing load conditions.
Overcurrent
Alarm
Check overcurrent alarm threshold settings.
ü
Check for removal of load.
Undercurrent
Alarm
Check undercurrent alarm threshold settings.
Check for changing load conditions.
Overcurrent
—
Warning
Check overcurrent warning threshold settings.
Firmware Firmware update in-progress. LCD does not display information. If the update fails or
—
Update aborts, the indication continues until firmware update is tried again and is successful.
on page 43.
Additional Troubleshooting by Plug Type
Additional Troubleshooting by
on page 43.
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