©2013 Magnum Energy, Inc.
27
5.0 Operation
5.3.3 Fault Mode Messages
When an abnormal condition is detected, the FAULT LED comes on and a fault
status is displayed. View the LCD display and use the information in this sec-
tion to identify and correct the issue.
Info:
Many faults automatically restart once cleared. Some require
either a manual restart or an inverter reset. See Section 6.2.
5.3.3.1 System Fault Messages
These fault messages are usually caused by some external issue that directly
affects the inverter/charger system.
FAULT !
AC Ovrld
AC Ovrld
appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED is off.
Figure 5-16, AC Overload Fault
• AC
Overload
Fault
– The AC load on the inverter/charger’s output exceeds
the inverter’s AC current protection limits. If the overload condition lasts for
less than 10 seconds, the unit automatically restarts and resumes operation.
However, if the overload occurs for longer than 10 seconds, the unit shuts down
and requires a manual restart.
Remedy:
This fault occurs because: the connected AC loads are
larger than the inverter’s output capacity, there is a wiring short on
the output, or the output wires are incorrectly installed. Once the
AC loads are reduced or the output wiring is corrected, the inverter
can be restarted after a manual restart has been accomplished.
FAULT !
Backfeed
BackFeed
appears on the LCD and
the FAULT (red) LED is on. The INV
(green) LED is off.
Figure 5-17, BackFeed Fault
• BackFeed
Fault
-
The inverter shuts down because AC voltage from an
external AC source has been detected on the inverter’s AC output. When the
unit shuts down because of this fault condition, an inverter reset is required
in order to resume operation (see Section 6.2 to reset the inverter).
Remedy:
This fault usually occurs because the AC output wiring is
connected to (or able to be connected to) the incoming AC source.
When this fault happens, all system wiring should be re-checked
to ensure the incoming hot and and/or neutral wires are not able
to be connected to the AC output.
