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Troubleshooting
900-0112-01-00 Rev B 35
Table 4 Basic Troubleshooting Steps
Symptom Unusual LEDs Possible Cause Possible Remedy
None (Solid AC IN LED
is replaced with solid
Inverter LED)
Erratic AC source voltage.
Check AC voltage on the inverter’s input
terminals. If not consistent, the problem is
external. AC source voltage may have
dipped or hovered at a low enough point to
crash a sensitive load before the inverter
could take over.
MATE system display only: This can happen if
ac1/grid lower limit
or
ac2/gen lower limit
were turned down to accommodate a
problematic AC source.
MATE3 system display only: This can happen
if
Lower Voltage Limit
setting were turned
down to accommodate a problematic AC
source in either the
Grid AC Input Voltage
Limits
or
Gen AC Input Voltage Limits
menus.
In either case, to make the inverter respond
sooner, raise the lower limit setting. (If this
setting was intentional, then no action is
required.)
Inverter LED flashes Inverter set to SRCH (Search
mode).
The unit will take a moment to come out of
Search mode after transferring.
MATE system display only: If constant power
is required, set to
ON
with the
INV
hot key.
(If this setting was intentional, then no
action is required.)
MATE3 system display only: Set to
ON
with
the
INVERTER
hot key. (If this setting
was intentional, then no action is required.)
None (Solid AC IN LED
is replaced with solid
Inverter LED)
Loads sensitive to inverter’s
minimal transfer time.
This product is not an uninterruptible power
supply. Certain loads (such as highly
sensitive computers) may not respond well
to the inverter’s 12 ms transfer time. It may
be necessary to put a true UPS on the
inverter’s output.
Inverter LED flickers;
Error LED
Loads too large. The unit can transfer more power than it can
invert. If loads are oversized, the unit will
falter or crash when switching to batteries.
Reduce the size of the loads.
Loads drop out
or crash during
transfer.
Inverter LED flickers;
Error LED
Undersized battery cables. Battery cables that are smaller than
recommended will cause a significant
voltage drop when switching to batteries,
acting like either an overload or a
low-battery condition. Size all cables
correctly.