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Troubleshooting
32 900-0114-01-00 Rev A
Table 4 Basic Troubleshooting Steps
Symptom Unusual LEDs Possible Cause Possible Remedy
No AC IN LED 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
Charger Control
screen with
AC IN
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 Grid/Generator
Support feature (see page 16).
MATE system display only: Turn off the
ac2/gen support
feature in
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
feature cannot be disabled.
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.
None (AC IN LED is
illuminated)
Inverter priority
MATE system display only: Check
Stop
Sell Reasons
menu
(STATUS/FX/SELL)
.
The inverter may be behaving correctly.
None (AC IN LED is
illuminated)
AC source does not meet
requirements.
Verify grid voltage and frequency.
Determine if they are within the
inverter’s approved limits. If not, the
inverter is behaving correctly. Contact
the utility company if necessary.
MATE system display only: The program
selections for limits are
IEEE
or
USER
.
None (AC IN LED and
Inverter are illuminated)
High output loads will consume
power before it is returned to the
utility grid.
Turn off some output loads and observe
the sell function.
Will not sell
power to the
utility grid.
None (AC IN LED is
illuminated)
Inverter has been set to accept a
generator.
Inverter will not intentionally sell to a
generator.
MATE system display only: Set
ac transfer
control
to
grid.