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Troubleshooting
32 900-0112-01-00 Rev B
Table 4 Basic Troubleshooting Steps
Symptom Unusual LEDs Possible Cause Possible Remedy
One or more
inverters will
not invert while
others do (in
multi-inverter
system).
Inverting LED not
illuminated on
questionable unit
Unit is slave and is in Power Save
mode.
MATE system display only: Check Power Save
levels in the
ADV/FX/STACK
menu and test
with loads. Determine if the inverter comes
on at the appropriate levels.
MATE3 system display only: Check Power
Save levels in the
Inverter Stacking
menu
and test with loads. Determine if the
inverter comes on at the appropriate levels.
(If this setting was intentional, then no
action is required.)
AC IN LED off No AC input. See “Will not connect to AC” category below.
Will not charge.
AC IN LED normal
Charger set to
OFF
. MATE system display only: Check the
Charger
Control
screen with the
AC IN
hot key and
set to
ON
or
AUTO
.
MATE3 system display only: Check the
Charger Mode
screen with the
CHARGER
hot key and set to
On
or
Auto
.
(If this setting was intentional, then no
action is required.)
AC IN LED normal Charge complete or nearly
complete.
Check the DC voltage and charging stage
using the system display, if present. Confirm
with DC voltmeter.
AC IN LED normal System display’s DC meter reads
significantly higher than actual
battery voltage.
Check the DC voltage on the inverter’s DC
terminals. If different from the system
display reading, the inverter could be
damaged. Otherwise, check the DC voltage
on batteries with a voltmeter. If different
from the reading on the inverter, this could
be a DC connection problem.
AC IN LED normal
Generator type does not work
well in conjunction with Input
Support feature (see page 16).
MATE system display only: Turn off the
ac2/gen support
function in the
ADV/FX/GEN
menu. The
ac transfer control
must be set to
gen
in order to do this. In
current models, if
ac transfer control
is set
to
grid
, the support function cannot be
disabled.
MATE3 system display only: Turn off the
Input
Support
function in the
AC Input and
Current Limit
menu.
Low charge
rate.
AC IN LED normal High output loads. If total loads
and charge exceed input setting,
charge will decrease to give
priority to loads.
Turn off some of the output loads and test
the charge rate again.
Reduced power
sold to the
utility grid.
None AC source voltage is driven high
when the inverter sells large
amounts of power.
When the inverter senses a rise in grid
voltage while selling, it reduces the sell
current, to avoid forcing the voltage to
unacceptable levels. Check AC input voltage
while selling. The inverter may be behaving
correctly.