Product Manual

Troubleshooting
40 900-0198-01-00 Rev A
Error Messages
An error is caused by a critical fault. In most cases when this occurs the ERROR indicator will illuminate
and the inverter will shut down. (See page 11 for the FX inverter’s LED indicators.) The system display has
a list of error messages. One or more messages will display
yes
in the MATE or MATE2. It will display
Y
in
the MATE3 along with an event message. If a message says
no
or
N
, it is not the cause of the error. See
the system display literature for more instructions.
Some errors will reset automatically when the cause is resolved. These are noted.
It is possible to clear an error by resetting the inverter. The inverter must be turned off, and then on, to
reset it. Other possible steps are shown below. Each should be followed by resetting the inverter.
Table 6 Error Troubleshooting
Message Causes Possible Remedy
Low Output Voltage
Inverter’s AC regulation cannot be maintained
under high load conditions.
Check loads and measure current draw. Remove
loads as necessary.
Stacking Error
Programming problem among stacked units.
(Often occurs if there is no master.)
Can also occur when
AC Output Backfeed
occurs.

Check stacking programming and designation
of master. (See page 24.)

Check for output backfeed from an external
source. Disconnect output if necessary.
Over Temperature
5
Inverter has exceeded its maximum allowed
operating temperature. See page
Error!
Bookmark not defined.
.
Allow the inverter to remain off to reduce the
temperature, or add external cooling.
Low Battery V
5
DC voltage is below low battery cut-out set
point, usually due to battery discharge. This
occurs after 5 minutes at this voltage.
This error can be triggered by other causes. It
can appear along with
Low Output Voltage
,
AC
Output Shorted
, or
AC Output Backfeed
errors.

If this error accompanies other errors, treat
those conditions as appropriate.

If it occurs by itself: Recharge the batteries.
The error will clear automatically if an AC
source is connected and the charger turns on.
Phase Loss Erro
r
A slave was ordered to transfer to AC by the
master, but no AC is present. The unit continues
inverting. This is the only “Error” that is not
accompanied by a shutdown.
Check the AC voltage on the inverter input
terminals. If AC voltage is not present, the
problem is external. If AC voltage is present, the
unit may be damaged. Contact OutBack
Technical Support
6
.
High Battery V
5
DC voltage exceeded acceptable level. See
page 13.
Check the charging source. This problem is
usually the result of external charging.
AC Output Shorted
Inverter exceeded its maximum surge current
due to severe overload.
Check the loads and wiring. This issue is usually
the result of a wiring problem (a short), as
opposed to a poorly-sized load.
AC Output Backfeed
Usually indicates another AC power source (out
of phase with the inverter) was connected to
the unit’s AC output.
Disconnect the AC OUT wires from the inverter.
Check the wires (not the inverter) with an AC
voltmeter. If an AC source is present, shut it off.
5
This error will clear automatically when the cause of the error is resolved. The inverter will begin functioning again when this occurs.
6
See inside front cover of this manual.