Outback Power Systems GFX1448E, GFX1424E, GFX1312E Terminals with a DC voltmeter. If voltage is

Symptom

Unusual LEDs

Possible Cause

Possible Remedy

Generator,

Amber AUX LED is on

AUX output is not connected, or

Test the generator or device to confirm

external fan,

is not delivering 12-volt output.

functionality. Test the AUX+ and AUX–

etc. fails to start

terminals with a DC voltmeter. If voltage is

when triggered

present with the AUX LED on, then there is

by AUX output.

an external connection problem. If voltage

is not present with the AUX LED on, the AUX

circuit may be damaged. Contact OutBack

Technical Support (see inside front cover of

this manual).

Unit reads AC

AC IN LED flashes

Internal transfer relay may be

Disconnect AC input wires and turn inverter

input, even

damaged.

on. Test the AC HOT IN and NEUTRAL IN

though no

connections with an AC voltmeter. If

source is

voltage appears there, the transfer relay may

present.

be jammed. Contact OutBack Technical

Support (see inside front cover of this

manual).

Inverter output is being fed with

Disconnect AC output wires. Turn the

an external AC source that is out

inverter off and then on. If the problem

of phase.

clears, reconnect the AC output wires. If the

problem recurs when reconnected, an

Inverter hums

external AC source is connected to the

output.

loudly. System

display may

Inverter has been incorrectly

Check HUB ports and make certain the

show messages

stacked with another unit on the

for high battery

Error LED

master inverter is plugged into port 1.

same output. All units come

voltage,

defaulted as master.

MATE system display only: Check stacking

low battery

settings in the ADV/FX/STACK menu. Only

voltage, or

one master is allowed per system on a single

backfeed error.

output.

MATE3 system display only: Check stacking

settings in the Inverter Stacking menu.

Only one master is allowed per system on a

single output.

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