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Inverter Troubleshooting
976-0043-01-02 9–3
Low AC power output or
Low surge power
INVERT LED is on.
AC inductive loads are
not running at full speed.
Insufficient DC current
being provided to the
inverter to operate the AC
loads.
Check the battery voltage, fuses or breakers and
cable connections.
Ensure the battery bank is sufficient (check for low
DC voltage while running the load).
Ensure the cable length and size is correct (see
owner’s manual for correct cable). Tie the battery
cables together to reduce inductance.
Inverter turns on and then
off or doesn’t turn on at
all.
Search Sense setting is
too low or high.
Potential problem loads
for Search Sense:
Incandescent Lights:
These have a higher
starting wattage when the
filament is cold than the
continuous rating of the
bulb.
Fluorescent Bulbs: These
work the opposite of
incandescent light bulbs.
If the inverter is set to
detect a 30 watt load and
a 40 watt fluorescent is
switched on, the inverter
will not detect it, This is
because the fluorescent
tube is less than 30 watts
until the gas in the tube
ionizes.
Other loads: There are
some appliances which
draw power even though
they are turned off. TV's
with instant on circuits,
microwaves with digital
clocks, VCR's, and
clocks.
If the search sensitivity is set higher than the
combined loads, then an auxiliary load must be used
to bring the inverter out of Search Mode before the
appliances can be turned on.
If the sensitivity is set lower than the combination of
the loads, the loads will remain on and excess battery
drain will occur since the inverter won't ever go to
sleep.
One solution is to turn the item off at the wall, use an
extension cord with a rocker switch, a switch at the
outlet, or an appropriate circuit breaker.