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9. TROUBLESHOOTING GUIDE
Problem
Possible causes
Suggested solution
Unit does not work
Battery voltage available
is smaller than 10Vdc in
case 12 Vdc system and
20Vdc if we are working
on 24 Vdc system.
Charge or replace battery.
Attached equipment
draws too much power.
Reduce load to inverter’s rated
power.
Inverter is in thermal
shutdown condition.
Inverter must cool down.
Check ventilation.
Make sure the load is within its rated
power.
Reverse polarity
connection, fuse burn.
Change the fuse.
Tested voltaje
battery is higher
than voltaje
received on
inverter input
terminals
Insufficient power or large
voltage drop.
Check condition of alligator clips.
Clean or replace then if neccessary.
Check size wires used is good enough
for the rated power.
Wrong input
voltage measured
Determined with a usual
voltmeter. Input voltage
below 11V (22V).
Use true RMS reading meter. Keep
input voltage above 11V (22V).
Television
interference
Snow, bad quality images.
Locate the inverter as far as possible
from TV, antenna and other cables.
Adjust the orientation of the inverter,
antenna cables and the TV power
cord.
Make sure that high quality shielded
antenna cable is used.
Buzzing sounds or
noise using the
audio system
The power supply of
the audio device does
not adequately filter
the modified sine wave
produced by the inverter.
Get a sound system that uses a higher
quality power supply.