Troubleshooting - Schumacher SCI90 Owner's Manual

Troubleshooting

PROBLEM
CONNECTED LED is
not on.
CHARGING LED is
blinking.
FULL CHARGE
is on, but battery is not
fully charged.
All LEDs are lit in an
erratic manner.
POSSIBLE CAUSE
The battery is not connected
correctly.
Battery voltage is at zero volts.
Input fuse is bad.
Output breaker is bad.
Charger is in Abort Mode.
Battery is sulfated.
Battery is bad.
Surface charge voltage is high.
LED
Battery voltage is very low and
the charger detects it as 6V,
not 12V.
A button may have been
pressed while the charger was
being plugged in.
Check for proper connection to
the battery.
Turn off everything in the car
and try to connect again.
Replace the fuse (5 Amp fuse).
Push button to reset the breaker.
Unplug the charger from the
AC and plug it back in.
Use
8 hours.
Have the battery checked.
Replace the battery.
Unplug the charger from the
AC and plug it back in.
Unplug the charger from the
AC and plug it back in, without
touching the control board.
10
SOLUTION
(Desulfation Mode) for