Schumacher Electric XC75 Manual Del Usuario página 9

PROBLEM
The green CHARGED LED
lights a few minutes after
connecting to the battery.
The charger is making an
audible clicking sound.
Charger makes a loud buzz
or hum.
Short or no start cycle when
cranking engine.
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POSSIBLE CAUSE
The battery may be fully
charged or recently charged,
leaving the battery voltage high
enough to appear to be fully
charged.
The incorrect battery type
may have been selected.
Circuit breaker is cycling.
Battery is defective.
Shorted battery cables or
clamps.
Transformer laminations
vibrate.
Drawing more than the
engine start rate.
Failure to wait 3 minutes (180
seconds) between cranks.
Clamps are not making a
good connection.
The charger may be
overheated.
Battery may be severely
discharged.
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SOLUTION
If the battery is in a vehicle,
turn the headlights on for
a few minutes to reduce
the battery voltage and try
charging again.
Reset the charger by
briefly unplugging it. Select
the desired charge rate
and battery type again, if
necessary.
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 clamps
and replace if necessary.
No problem, this is a normal
condition.
Crank time varies with the
amount of current drawn. If
cranking draws more than the
engine start rate, crank time
may be less than 3 seconds.
Wait 3 minutes of rest time
before the next crank.
Check for poor connection at
battery and frame.
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 at the FAST
charge rate to help assist in
cranking.