Schumacher SEM-1562A User Manual
Page 17
12
TROUBLESHOOTING
16.
PROBLEM
POSSIBLE CAUSE
REASON/SOLUTION
Charger will not turn
on when properly
connected.
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.
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.
Charger makes a loud
buzz or hum.
Transformer laminations
vibrate (buzz).
Shorted Diode Assembly
or Output Rectifier
Assembly (hum).
No problem, this is a
normal condition.
Have charger checked by
a qualified technician.
CHARGING
(yellow) LED is flashing.
Indicates the charger is in
abort mode.
See “Aborted Charge”
in the OPERATING
INSTRUCTIONS Section.