Product Manual

Troubleshooting
900-0145-01-01 Rev B 55
Table 6 Troubleshooting
Symptom Possible Cause Possible Remedy
Inverter clicks
repeatedly. AC
output voltage rises
or drops to unusual
levels with every
click.
Inverter’s output has been
connected to its input. Voltage
shifts are the result of trying to
match its own voltage.
Disconnect the wires from the inverter’s AC input or AC output
terminals, or both. If the problem immediately disappears, it is an
external wiring issue. The inverter’s AC IN and AC OUT must
remain isolated from each other.
Low AC input voltage. Can be
caused by weak AC source, or
by faulty input connection.
Test AC hot and neutral input test points with an AC voltmeter.
(See page 51.) If low or fluctuating, this is an external problem.
A generator is connected to the
input terminals while the unit is
in the
Grid Tied
input mode.
The inverter is not intended to sell power to a generator. The
selling activity will drive the generator voltage up to the
disconnection point. It will then reconnect to the generator and
try again. Change input modes, or move the generator to an
input with a different mode selected.
Unit reads AC input,
even though no
source is present.
Internal transfer relay may be
damaged. May be
accompanied by
AC Relay Fault
error and shutdown.
Disconnect AC input wires and turn inverter on. Test the AC input
and neutral test points with an AC voltmeter. (See page 51.) If
voltage appears there, the transfer relay may be jammed. Contact
OutBack Technical Support.
5
This problem is not common. If this
occurs, it will likely occur on only the Grid or Gen input — not
both.
False reading due to noise. Electrical noise can cause false readings on the metering circuits
when no voltage is present. The readings are usually less than
30 Vac. If this is the case, no action is required.
Inverter hums loudly.
System display may
show messages for
high battery voltage,
low battery voltage,
or backfeed error.
Inverter output is being
supplied 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 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.
Generator, external
fan, etc. fails to start
when signal is
provided by AUX
output.
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.
5
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.
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.
5 See inside front cover of this manual.