Troubleshooting - Schumacher Electric SEM-1562A Manual Del Usuario

16.

TROUBLESHOOTING

PROBLEM
Charger will not turn
on when properly
connected.
Charger makes a loud
buzz or hum.
CHARGING
(yellow) LED is flashing.
POSSIBLE CAUSE
AC outlet is dead.
Poor electrical
connection.
Severely discharged, but
otherwise good, battery.
Clips are not making a
good connection to the
battery.
Battery is defective.
Reverse connections at
battery.
Transformer laminations
vibrate (buzz).
Shorted Diode Assembly
or Output Rectifier
Assembly (hum).
Indicates the charger is in
abort mode.
12
REASON/SOLUTION
Check for an open fuse or
circuit breaker supplying
the AC outlet.
Check the power cord
and extension cord for as
loose fitting plug.
The battery may not want
to accept a charge due to
a run-down state. Allow
the charging to continue
until the battery has had
a chance to recover
sufficiently enough to take
a charge. If more than 20
minutes, stop charging
and have the battery
checked.
Check for poor connection
to battery and frame.
Make sure connection
points are clean. Rock
clips back and forth for a
better connection.
Have the battery checked.
Unplug the charger
and correct the lead
connections.
No problem, this is a
normal condition.
Have charger checked by
a qualified technician.
See "Aborted Charge"
in the OPERATING
INSTRUCTIONS Section.