MYERS MP Series, Installation, Operation & Maintenance Manual

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2.2.13 Fault Menu
Purpose: Describes the Fault Submenu and how to use the LCD for troubleshooting.
(Figures 25, 26 and 27)
Procedure: When the red ALARM LED is continuously ON, the unit has a fault,
indicating a condition where backup power is unavailable. Press ENTER to display
fault description.
TIP: When the unit has a fault and line power is qualified and available, the output
loads are directly connected to the Input line with no line conditioning or backup
power provided.
LCD SHOWS FAULT DESCRIPTION
Short Circuit Short Circuit The load is short-circuited or the inverter did not start
Batt. Low Volt Low Battery Voltage* The battery's output voltage is low
Batt. High Volt High Battery Voltage The battery's output voltage is high
Temp High High Temperature*
The battery's temperature or the MP2000 internal
temperature is high
Overload Overload
The loads are drawing more power than the MP2000
can provide
Figure 27
Fault Table
*These faults are self-resetable. After the fault condition is removed, the unit
automatically returns to Line mode if the line is qualified or Battery mode if it isn’t. For
the other faults, the unit is reset by shutting it down and restarting, using AC & battery
breakers. The faults can also be reset in the Control Menu of the LCD display.