Owners manual

Troubleshooting
Emerson
®
MPH2
™
30
5.0 TROUBLESHOOTING
LED Indication
(One or All LED’s)
Audible
Alarm
Condition Status/Recommended Action
Color
State/Flash
Speed
Green Fast —
Receptacle
Identification
Remote user is requesting outlet identification.
The LED should stop flashing after 10 seconds.
Green Steady On —
Input Voltage Supported
Receptacle Powered On
Normal Operation
Off NA — Voltage Off
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 ✔
Line or Receptacle
Overcurrent Alarm
Check for changing load conditions.
Check overcurrent alarm threshold settings.
Green Slow —
Line or Receptacle
Overcurrent Warning
Check for changing load conditions.
Check overcurrent warning threshold settings.
Red Fast ✔
Line or Receptacle
Undercurrent Alarm
Check for removal of load.
Check undercurrent alarm threshold settings.
Red
(All Receptacle
LED’s)
Pulse —
Branch Circuit
Breaker Open
Check for changing load conditions; confirm circuit
breaker actuator is closed. If open, correct loading
condition before pressing circuit breaker actuator
closed again.
Green
(All Receptacle
LED’s)
Slow —
Branch Overcurrent
Warning
Check for changing load conditions.
Check overcurrent warning threshold settings.
Red
(All Receptacle
LED’s)
Fast ✔
Branch Overcurrent
Alarm
Check for changing load conditions.
Check overcurrent alarm threshold settings.