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PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Charger makes a loud buzz
or hum.
Transformer laminations vibrate
(buzz).
Shorted Diode Assembly or
Output Rectier Assembly (hum).
No problem; this is a normal
condition.
Have charger checked by a
qualied technician.
Short or no start cycle
when cranking engine.
Drawing more than the charger’s
rated amps.
Failure to wait 3 minutes (180
seconds) between cranks.
Clips 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.
Crank time varies with the
amount of current drawn. If
cranking draws more than the
charger’s rated amps, 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.
Check power cord and extension
cord for loose tting plug.
Check for open fuse or circuit
breaker supplying AC outlet.
The thermal protector may have
tripped and needs a little longer
to reset. 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
manual charge rate to help assist
in cranking.
Charger will not turn on
when properly connected.
AC outlet is dead.
Poor electrical connection.
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and extension
cord for loose tting plug.
The battery is connected
and the charger is on, but
is not charging.
Clips are not making a good
connection.
Check for poor connection at
battery and frame. Make sure
connecting points are clean.
Rock clips back and forth for a
better connection.