Emerson Network Power MPH2 User Manual

Troubleshooting
Emerson
®
MPH2
™
User Manual 43
Table 5-2 Line LED Troubleshooting
LED Indication
(One or All LEDs)
Audible
Alarm Condition Status/Recommended ActionColor
State/
Flash Speed
Green Steady On — None
Normal Operation
Note: Depending on plug type, not all LEDs may be lit,
see Table 5-3.
Off NA — Voltage Off
Confirm that the LED is active per Table 5-3.
Check power source and input plug’s receptacle
wiring.
Check receptacle power control settings.
Red Steady On  Line Undervoltage Alarm
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.
Red Fast  Overcurrent Alarm
Check for changing load conditions.
Check overcurrent alarm threshold settings.
Green Slow — Overcurrent Warning
Check for changing load conditions.
Check overcurrent warning threshold settings.
Red Fast  Undercurrent Alarm
Check for removal of load.
Check undercurrent alarm threshold settings.
Green/Red Fast — Firmware Update
Firmware updated in-progress. LCD does not display
information. If the update fails or aborts, the indication
continues until firmware update is successful.

Emerson Network Power MPH2 Specifications

General

Brand	Emerson
Model	Network Power MPH2
Category	Power distribution unit
Language	English