Error Codes And Troubleshooting - Schumacher Pro Series Owner's Manual

13. ERROR CODES AND TROUBLESHOOTING

Error Codes
CODE
The battery voltage is still under 10V
F01 (for a 12V battery) or 5V (for a 6V
battery) after 2 hours of charging.
The charger has detected a sulfated
SUL
battery.
The charger cannot desulfate the
F02
battery.
The battery was unable to reach the
"full charge" voltage.
F03
The connections to the battery are
F04
reversed.
The charger was unable to keep
the battery fully charged in maintain
F05
mode.
The charger detected that the battery
F06
may be getting too hot (thermal
runaway).
If you get an error code, check the connections and settings and/or replace the battery.
Troubleshooting
PROBLEM
No reading or 0.0V
shown on the display.
The Boost/Charging
LED does not turn off.
DESCRIPTION
POSSIBLE CAUSE
Clamps are not making a
good connection.
AC cord and/or extension
cord is loose.
No power at receptacle.
Clamp polarity reversed.
The charger is still in Boost
mode.
The charger is still in one of
the charge modes.
REASON/SOLUTION
The battery could be bad. Have it checked or replaced.
The charger will go into desulfation mode. If the
desulfation is not successful after 10 hours, the charger
will go into abort mode.
The battery could not be desulfated; have it checked or
replaced.
May be caused by trying to charge a large battery or
bank of batteries on too low of a current setting. Try
again with a higher current setting or have the battery
checked or replaced.
The battery is connected backwards. Unplug the charger
and reverse the connections to the battery.
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.
The charger automatically shuts the current off if it
detects the battery may be getting too hot. Have the
battery checked or replaced.
Check for poor connection at
battery and frame. Make sure
connecting points are clean.
Check power cord and extension
cord for loose fitting plug.
Check for open fuse or circuit
breaker supplying AC outlet.
Verify and reverse the battery
clamps.
This is normal. In Boost mode, the
LED will not turn off until the
battery is disconnected from the
charger.
This is normal. In one of the charge
modes, the
until the battery charging process
is completed.
SOLUTION
LED will not turn off