TROUBLESHOOTING
Common Audio/Visual Problems
Resetting the Unit
After over-voltage or thermal automatic shutdown, the VEC054D will reset automatically. To reset all other units,
turn the ON/OFF Power Switch to the “OFF” position, then back “ON.”
Fault Protection and Troubleshooting Guide
INVERTER POWER SWITCH TURNED ON
Trouble/Indication Possible
Cause
Suggested
Remedy
No AC output —
DC input is below 10 volts
Recharge or replace battery.
red LED lit
Excessive appliance load
Turn unit OFF. Reduce the load, wait for the
— thermal shutdown
inverter to cool down, then turn the unit ON
again.
No AC output —
Fuse(s) open
Check DC input — fuse(s) in vehicle. Replace
green LED not lit
the fuse with one of the same type and
rating if necessary.
Low battery alarm
Low battery voltage
Recharge battery. Remove load from the
sounds continuously
inverter while recharging battery.
Bad connection or wiring
Tighten all DC connections.
Motorized power tool
Excessive start-up load
If appliance does not start, appliance is
will not start
drawing excessive voltage and will not work
with inverter.
Motorized power tool
Purely inductive load
Make the load not purely inductive. Operate
does not operate at
an incandescent lamp at the same time as
correct speed
motor.
Television/radio
Snow in picture,
Keep inverter and antenna distant from each
interference
“buzzing” sound
other. Use shielded antenna. Connect antenna
to amplifier.
Problem
Solution
“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 inverter. The only solution to this problem is to use a higher
quality sound system that incorporates a higher quality power amplified supply.
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. Try the following corrective measures:
• Position the inverter as far as possible from the television, the antenna and the
antenna cables. Use an extension cable, if necessary.
• Adjust the orientation of the inverter, the antenna cables and the TV power cord
to minimize interference.
• Make sure the antenna feeding the television provides an adequate (“snow
free”) signal and that high quality, shielded antenna cable is used.
• Do not use the inverter to operate high-power appliances or tools at the same
time you are using it to operate the TV.
• Make sure the inverter’s case is properly grounded (refer to the “Permanent
Installation Procedure” section of this Instruction Manual).
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