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Troubleshooting
900-0020-01-00 Rev A 37
Table 2 Troubleshooting
Symptom Possible Cause Possible Remedy
Inverter output is being fed
with an external AC source that
is out of phase.
Disconnect AC output wires. Turn the inverter off and then on. If
the problem clears, reconnect the AC output wires. If the
problem recurs when reconnected, an external AC source is
connected to the output.
Inverter hums
loudly. System
display may show
messages for high
battery voltage,
low battery voltage,
or backfeed error.
Inverter has been incorrectly
stacked with another unit on
the same output. All units
come defaulted as master.
Check HUB ports and make certain the master inverter is plugged
into port 1.
MATE3 system display only: Check stacking settings in the
Inverter
Stacking
menu. Only one master is allowed per system.
AUX output is not connected. Test the generator or device to confirm functionality. Test the
appropriate AUX terminals with a DVM. (If the RELAY AUX
terminals are in use, test for continuity. If the 12V AUX terminals
are in use, test for 12 Vdc.) If the proper results are present when
the menu indicates the function is
On
(and the device still does
not work), then there is an external connection problem. If the
proper results are not present with the function
On
, the AUX
circuit may be damaged. Contact OutBack Technical Support (see
inside front cover of this manual).
Wrong AUX terminals have
been programmed.
MATE3 system display only: Confirm that the AUX menu that was
programmed matches the terminals that are in use. The
Auxiliary
Output
menu programs the 12V AUX terminals. The
Auxiliary
Relay
menu programs the RELAY AUX terminals.
Generator, external
fan, etc. fails to start
when triggered by
AUX output.
Wrong AUX terminals are in use. If generator or external device requires 12 Vdc, confirm the 12V
AUX terminals have been connected. The RELAY AUX terminals
do not provide voltage.
MATE3 system display only: AGS
function does not work if a valid
input is present.
Check both inputs for a second AC source (utility grid). If the
inverter detects an acceptable AC source, it will not allow AGS.
This is true even if it is internally disconnected from the source
(due to HBX mode,
Mini Grid
mode, or similar programming).
Automatic
Generator Start fails
to trigger when
conditions are met
(or starts when
conditions are not
met).
MATE3 system display is not
present.
AGS programming is located in MATE3 and cannot function if it is
removed.