alarm will sound when the inverter is overloaded, in thermal shutdown, or
if there is an excessive voltage drop between the battery and invert er.
NOTE:
It is normal for the alarm to sound while the unit is being connected
to, or disconnected from, the power source. This is not indicative
of a problem.
7. COMMON PROBLEMS
“BUZZING” SOUND IN AUDIO SYSTEMS:
Some inexpensive stereo systems and “boom boxes” emit a buzzing sound
from their speakers when operated from the power inverter . This occurs
because the power supply in the electronic device does not adequately filter
the modified sine wave produced by the invert e r. The only solution to this
problem is to use a higher quality sound system that incorporates better
filtering electronics.
TELEVISION INTERFERENCE:
The inverter is shielded to minimize interference with TV signals. However,
in some instances, some interference may still be visible, particularly with
weak TV signals. T ry the following corrective measures:
• Position the invert e r as far as possible from the television, the antenna
and the antenna cables. Use an extension cable, if necessary
• Adjust the orientation of the inverte r, the antenna cables and the TV
power cord to minimize interference
• Make sure that the antenna feeding the television provides an ade quate
(“snow free”) signal and that high quality , shielded antenna cable is used
8. TROUBLESHOOTING GUIDE:
TABLE 1 - INVERTER POWER SWITCH TURNED ON
TROUBLE/ INDICATIO N POSSIBLE CAUSE SUGGESTED REMEDY
No AC output – DC input below 10 volts Recharge or replace
red LED lit battery
No AC output – Excessive appliance Reduce load-wait for
red LED lit load-thermal shutdown inverte r to cool. T urn OFF,
then turn ON
No AC output – External/internal Contact technical support
fuses open toll free 866-584-5504
Low ba t t e ry alarm Bad connection or wiring Tighten all DC connections
sounds continuously
Low battery Low battery voltage Recharge battery.
alarm sounds Remove load from inverter
while recharging battery
Motorized power tool Excessive start-up load Do not connect
won’t start
Television/radio Snow in picture, buzz Kee p inve rter and antenna
interference in speaker distant from each other.
Use shielded antenna
cable. Connect antenna
to amplifier
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