Schumacher SE-4225 Owner's Manual page 10

PROBLEM
The charger is making an
audible clicking sound.
Charger makes a loud
buzz or hum.
Short or no start cycle
when cranking engine.
Charger will not turn on
when properly connected.
POSSIBLE CAUSE
Circuit breaker is cycling.
Battery is defective.
Shorted battery cables or clips.
Severely discharged battery,
but otherwise it is a good
battery.
Reverse connections at battery.
Transformer laminations vibrate
(buzz).
Shorted diode assembly or
Output rectifier assembly (hum).
Drawing more than 225 amps.
Failure to wait 3 minutes (180
seconds) between cranks.
Clamps are not making a good
connection.
AC cord and/or extension cord
is loose.
No power at receptacle.
The charger may be
overheated.
Battery may be severely
discharged.
AC outlet is dead.
Poor electrical connection.
• 10 •
REASON/SOLUTION
The settings may be wrong.
Check the charger settings.
Have the battery checked.
Circuit breaker cycles when
current draw is too high. Check
for shorted cables or clips and
replace if necessary.
The battery may not want
to accept a charge due to a
run-down state. Allow charging
to continue until battery has a
chance to recover sufficiently
to take a charge. If more than
20 minutes, stop charging and
have the battery checked.
Shut the charger off and correct
the lead connections.
No problem, this is a normal
condition.
Have charger checked by a
qualified technician.
Crank time varies with the
amount of current drawn. If
cranking draws more than 225
amps, crank time may be less
than 3 seconds.
Wait 3 minutes of rest time
before the next crank to allow the
battery and charger to cool down.
Check for poor connection at
battery and frame.
Check power cord and extension
cord for loose fitting plug.
Check for open fuse or circuit
breaker supplying AC outlet.
The thermal protector may have
tripped and needs a little longer
to close. Make sure the charger
vents are not blocked. Wait and
try again.
On a severely discharged
battery, charge for 10 to 15
minutes in the highest manual
rate to help assist in cranking.
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and extension
cord for loose fitting plug.