Schumacher Electric SE-40MAP Manual Del Usuario página 16

PROBLEM
The charger is making an
audible clicking sound.
Charger makes a loud
buzz or hum.
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).
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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.