© 2015 Sensata Technologies
Maintenance & Troubleshooting
42
Table 5-1, Troubleshooting Guide
Symptom
Possible Cause
Recommended Solution
Low Battery
Voltage
(status
indicator
blinks on 1
time every
3 secs)
Battery voltage level
has dropped below
the Low Battery Cut
Out (LBCO) set-
point for more than
one minute (10.0
VDC = LBCO default
setting).
Battery voltage too
low. Check fuses/
circuit-breakers and
cable connections.
Check battery voltage
at inverter’s terminals.
Batteries may need to be
charged—fault condition
automatically clears when
battery voltage exceeds
12.5 VDC.
High Battery
Voltage
(status
indicator
blinks on 2
times every
3 secs)
Battery voltage
is above 16.9
VDC. Inverter
automatically
resets and resumes
operation when
the battery voltage
drops below 16.5
VDC.
Generally, this condition
only occurs when an
additional charging source
(alternator, solar panels
or other external charging
sources) is used to charge
the battery bank. Reduce
or turn off any other
charger to the inverter
batteries to allow the
voltage level to drop.
Over-
temperature
condition
(status
indicator
blinks on 3
times every
3 secs)
Internal
temperature of the
inverter has risen
above acceptable
limits—loads too
great for inverter to
continuously operate
or inadequate
ventilation around
inverter. Once
unit has cooled,
it automatically
resets and resumes
operation.
Reduce number of
operating electrical
loads—will avoid a repeat
Overtemp shutdown if the
cause was too many loads
for ambient conditions.
Check ventilation around
the inverter, ensure cool
air is available to pass
through the inverter.
AC Overload
(status
indicator
blinks on 4
times every 3
secs)
Inverter has
turned off because
connected loads
are larger than the
inverter’s output
capacity—or the
output wires are
shorted.
Reduce AC loads
connected to inverter,
or remove all AC output
wiring and restart the
inverter.