ENGLISH • 15
TROUBLESHOOTING
Problem
Cause
Solution
No power, no indicator.
Battery is defective
Replace battery
Blown fuse
Check and replace fuse
Lose cable connections
Check the connection to the battery. Tighten
as required.
The red LED indicator
illuminates.
AC products connected are rated
at more than 750W; overload
shutdown has occurred.
Reduce load, use a product with power rating
less than 750W.
AC products are rated less than
750W, but high starting surge
has caused overload shutdown.
Use a product with starting surge power
within the inverter’s capability (≤1500W).
The voltage input is too low
(alarm is sounding).
charge the battery
Inverter is overheated due to
poor ventilation and has shut
down.
Unplug inverter from DC socket and allow to
be cooled for 15 minutes. Remove objects
covering unit. Move the inverter to a cooler
place. Reduce load if continuous operation is
required. Restart.
Inverter runs small loads but
not large loads
Low voltage battery
Charge the battery
Water entered
Water entered the unit
Disconnect the inverter and wipe immediately
with a dry cloth, or permanent damage can
occur with liquid ingress.
Alarm is sounding
Low voltage shutdown or thermal
shutdown has occurred.
Shorten cables or use heavier cables.
Recharge battery. Allow unit to cool. Improve
air circulation around unit. Locate unit
to a cooler environment. Reduce load if
continuous operation is required.
Measured inverter output
is too low
Standard “average-reading” AC
voltmeter used to measure output
voltage, resulting in an apparent
reading 5 to 15V too low.
Inverter’s “modified sine wave” output
requires “true RMS” voltmeter for accurate
measurements.
Battery voltage is too low
Recharge battery
Battery run time is less than
expected
AC product power consumption
is higher than rated.
Use a larger battery to make up for increased
power requirement.
Battery is old or properly
defective.
Replace battery
Battery is not being properly
charged.
Some chargers are not able to fully recharge
a battery. Make sure you use a powerful
charger.
Power dissipation in DC cables.
Use shorter/heavier DC cables
