• 8 •
CODE
DESCRIPTION
REASON/SOLUTION
F06
The charger detected that the battery
may be getting too hot (thermal
runaway).
The charger automatically shuts the current off if it
detects the battery may be getting too hot. Have the
battery checked or replaced.
F07
The charger shut off because its
internal temperature exceeds limit.
Make sure the charger does not have the side ventilation
holes blocked. Move the charger out of the sun and into
the shade.
F08
The battery voltage dropped too low
during the maintain mode.
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.
If you get an error code, check the connections and settings and/or replace the battery.
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
Charger will not turn
on when properly
connected.
AC outlet is dead.
Poor electrical connection.
Battery is defective.
Check for open fuse or circuit breaker
supplying AC outlet.
Check power cord and extension cord for
loose fitting plug.
Have the battery checked.
Engine start does
not work.
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.
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.
14. BEFORE RETURNING FOR REPAIRS
If these solutions do not eliminate the problem, or for more information about troubleshooting, call:
Schumacher Electric Corporation Customer Service, 1-800-621-5485
Return products under warranty to your local NAPA Auto Parts Store.
