Abnormal Display
1. Over Temperature
2. AC Overload or Shortage
3. Battery Voltage Too Low
4. Battery Voltage Too High
5. Inverter Defective
Normal Display
Voltage Reading Example
Trouble Shooting
Trouble Shooting
Problem Reason
Solution
Low or No Output Voltage
Battery voltage may be low.
Poor contacts are causing voltage
drop.
Using incorrect type of voltmeter to
test output voltage.
Recharge or replace battery. May be
necessary to use two batteries to run some
items.
Unplug and reattach connections, may be
necessary to use shorter or heavier cables.
Check condition of 12 volt plug and socket,
clean or replace as necessary.
Use a true RMS reading meter.
Fault LED on
Battery voltage below 10 volts
AC appliance consumption is higher
than capacity.
Inverter is too hot causing thermal
overload.
Inverter may be defective.
Recharge or replace battery.
Use a higher capacity inverter or lower
capacity appliance.
Shut off inverter to allow cooling. Ensure
proper ventilation.
Contact tech hotline.
TV Interference
Electrical interference from the
inverter
TV signal is too weak.
Use a filter in the TV power cord.
Adjust placement of the television.
Try another TV, different makes and
models may not experience the same
interference.
Low Battery Alarm on ALL the
time
Input voltage below
10.5 VDC ± .5
VDC.
Poor contacts are causing voltage
drop.
Recharge or replace battery. May be
necessary to use additional batteries to run
some items.
Unplug and reattach connections, may be
necessary to use shorter or heavier cables.
Check condition of 12 volt plug and socket,
clean or replace as necessary.
Appliance not functioning
Appliance won't turn on.
Turn inverter ON, OFF, then ON again.
Contact manufacturer of appliance to check
start up power consumption and if product
is compatible with a modified sine wave
inverter.
