Table 5-2: Line Led Troubleshooting - Emerson Network Power MPH2 User Manual

Troubleshooting
LED Indication
(One or All LEDs)
State/
Color Flash Speed
Green Steady On
Off NA
Red Steady On
Red Fast
Green Slow
Red Fast
Green/Red Fast
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Emerson MPH2 User Manual
Table 5-2 Line LED Troubleshooting
Audible
Alarm Condition
— None
— Voltage Off
 Line Undervoltage Alarm
 Overcurrent Alarm
— Overcurrent Warning
Undercurrent Alarm

— Firmware Update
Status/Recommended Action
Normal Operation
Note: Depending on plug type, not all LEDs may be lit,
see Table 5-3.
Confirm that the LED is active per Table 5-3.
Check power source and input plug's receptacle
wiring.
Check receptacle power control settings.
Check power source for power quality problem. If the
MPH2 uses 3-phase power, a single low-voltage
phase may cause one or more undervoltage alarms.
The undervoltage alarm is factory-set to -10% of the
minimum input voltage range on the nameplate; it
cannot be changed.
Check for changing load conditions.
Check overcurrent alarm threshold settings.
Check for changing load conditions.
Check overcurrent warning threshold settings.
Check for removal of load.
Check undercurrent alarm threshold settings.
Firmware updated in-progress. LCD does not display
information. If the update fails or aborts, the indication
continues until firmware update is successful.
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