Troubleshooting
PROBLEM
Charger will not turn on
when properly connected.
Engine start does
not work.
The display shows
"bAD / bAt / F01 ".
The display shows
"bAD / bAt / F02".
The display shows
"bAD / bAt / F05".
14. BEFORE RETURNING FOR REPAIRS
For information about troubleshooting, contact customer service for assistance:
services@schumacherelectric.com | www.batterychargers.com | or call 1-800-621-5485
For REPAIR OR RETURN, contact Customer Service at 1-800-621-5485. DO NOT SHIP UNIT until
you receive a RETURN MERCHANDISE AUTHORIZATION (RMA) number from Customer Service
at Schumacher Electric Corporation.
POSSIBLE CAUSE
AC outlet is dead.
Poor electrical connection.
Battery is defective.
Drawing more than the Engine
Start rate.
Failure to wait 3 minutes (180
seconds) between cranks.
The charger may be overheated.
Battery may be severely
discharged.
The battery voltage is still below
10V (for a 12V battery) or 5V
(for a 6V battery) after 2 hours of
charging.
Desulfation was unsuccessful,
after 10 hours.
Lack of progress is detected after
12 hours in Maintain mode.
Check for open fuse or circuit breaker
supplying AC outlet.
Check power cord and extension cord for
loose fitting plug.
Have the battery checked.
Crank time varies with the amount of current
drawn. If cranking draws more than the
Engine Start rate, crank time may be less than
5 seconds.
When the Engine Start LED blinks, wait 3
minutes of rest time before the next crank.
The thermal protector may have tripped
and needs a little longer to reset. Make sure
the charger vents are not blocked. Wait and
try again.
On a severely discharged battery, use the
Boost rate for 10 to 15 minutes, to help assist
in cranking.
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.
The battery won't hold a charge. May be
caused by a drain on the battery or the
battery could be bad. Make sure there are
no loads on the battery. If there are remove
them. If there are none, have the battery
checked or replaced.
• 12 •
SOLUTION