Troubleshooting
900-0167-01-00 Rev A 59
Table 7 Troubleshooting
Symptom Possible Cause Possible Remedy
Low charge rate.
Charge complete or nearly
complete.
Check the DC voltage and charging stage using the MATE3, if
present. Confirm with DC voltmeter.
MATE3’s DC meter reads
significantly higher than actual
battery voltage.
Check the DC voltage on the inverter’s DC terminals. If different
from the MATE3 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.
High output loads. If total loads and charge exceed the AC input setting, charge rate
decreases to give priority to the loads. Turn off some of the
output loads and test the charge rate again.
High temperature. The inverter will reduce the current rate for charging and other
activities if the internal temperature exceeds a certain level.
Check temperature readings and allow the inverter to cool if
necessary. (See page 64.) External cooling may also be applied.
Will not charge.
No AC input. See “Will not connect to AC” category.
Charger set to
Off
. 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.)
Gri
Zero
mode in use. MATE3 system display only: The charger is inoperative in
Gri
Zero
mode. (If this setting was intentional, then no action is required.)
Will not sell power to
the utility grid.
Grid-tied function has been
manually disabled.
MATE3 system display only: Check the
Gri
-Tie Enable
setting in
the
Grid-Tie Sell
menu. Confirm it is set to
Y
.
Grid Tie
mode not in use. MATE3 system display only: Check the
Inverte
part of the
ettings
menu to see if
Grid Tied
mode is in use.
AC source does not meet
requirements; this item is
usually accompanied by
disconnecting from the
utility grid when in
Grid Tied
mode.
Verify grid voltage and frequency. Determine if they are within
the inverter’s approved limits. If not, the inverter is operating
correctly. Contact the utility company if necessary.
MATE3 system display only: The program limits are found in the
inverter’s
Grid Interface Protection
menu. See page 20 for more
information on this menu.
The inverter has other criteria
besides the AC source which
must be met, such as the
qualifying time.
MATE3 system display only: Check
ell Status
screen using the
Home screen’s soft keys. The inverter may be operating correctly.
Depending on the conditions which need to be met, the delay
may be temporary.
The inverter will perform the
Offset function before
attempting to sell.
Output loads can consume all excess renewable power if they are
large enough. (The Offset function “sells to the loads.”) Turn off
some output loads and observe the sell operation.
Reduced power sold
to the utility grid.
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 operating correctly.
High temperature. The inverter will reduce the current rate for selling and other
activities if the internal temperature exceeds a certain level.
Check temperature readings and allow the inverter to cool if
necessary. (See page 64.) External cooling may also be applied.
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