Troubleshooting - Schumacher Electric Booster 12V Owner's Manual

11. TROUBLESHOOTING

PROBLEM
The booster won't
jump start my car.
The booster won't
power my 12V
device.
The battery in the
booster won't hold
a charge.
The green POWER
LED does not light
when charger is
properly connected.
The red BAD
BATTERY LED is lit
and yellow/orange
CHARGING LED is
flashing rapidly.
12. Specifications
Internal Battery Type
POSSIBLE CAUSE
Clamps are not making a good
connection to the battery.
The booster battery is not
charged.
The vehicle's battery is defective.
The fuse has blown.
The 12V device is not turned on.
The booster battery is not
charged.
The 12V device draws more than
15A or has a short circuit.
The battery is bad (will not accept
a charge).
AC outlet is dead.
Poor electrical connection.
Desulfation was unsuccessful.
Booster 12V
12V AGM lead-acid
Check for poor connection to battery and
frame. Make sure connection points are
clean. Rock clamps back and forth for a
better connection.
Check the battery charge status by pressing
the button on the front of the booster.
See LED Indicators section of this manual.
Have the battery checked.
Replace the power fuse (See section 8).
Turn on the 12V device.
Check the battery charge status by pressing
the button on the front of the booster.
See LED Indicators section of this manual.
Disconnect the 12V device. The internal
breaker will automatically reset after
a minute or two. Try the 12V device again. If
it happens again, replace the 12V device.
Have the battery checked.
Check for open fuse or circuit breaker
at the supplying AC outlet.
Check power cord and extension cord for
a loose fitting plug.
The battery may be defective. Make sure
there are no loads on the battery. If there
are, remove them. If there are none, have
the battery checked or replaced.
The battery may be defective. Have battery
checked or replaced.
11
REASON/SOLUTION
Booster 12/24V
12V AGM lead-acid