Troubleshooting - Schumacher SE-1555A Owner's Manual

13.

TROUBLESHOOTING

PROBLEM
Zero Amps on Digital
Display.
No reading on Digital
Display and charger fan
is not working.
Circuit breaker in
charger cycles on
and off with a clicking
sound.
Short start cycle when
cranking engine.
Digital Display reads
less than selected
charge rate when
charging a discharged
battery.
Charger makes a loud
buzz or hum.
POSSIBLE CAUSE
Clips are not making a
good connection.
2 amp charge rate being
used.
AC cord and/or extension
is loose.
Poor electrical
connection.
Switch is in OFF position.
Shorted battery clamps.
Shorted battery.
Charger leads reversed.
CHARGE RATE
SELECTOR button set to
an incorrect range.
Drawing more than 150
amps for a period equal
to or less than 3 seconds.
Failure to wait for 3
minutes (180 seconds)
between cranks.
Extension cord too long
or wire gauge is too
small.
Weak cell or sulfated
plate in battery.
The battery is only
partially discharged .
Transformer laminations
vibrate (buzz).
13
• •
SOLUTION
Check for poor connection
at battery. Make sure
clamps and posts are clean.
Battery may not want to
accept a charge due to
excessive run down state.
Digital Display may show no
activity at the 2 amp setting.
Check AC outlet and
extension cords for loose
fitting plug.
Check for open fuse or
circuit breaker supplying AC
outlet.
Turn Switch on.
Circuit breaker cycles when
current draw is too high.
Separate the clamps. Check
for worn cables and replace
if needed.
Correct connections.
Correct Selector setting.
Crank time varies with the
amount of current drawn. If
cranking draws more than
150 amps, crank time may
be less than 3 seconds.
Wait 3 minutes before next
crank.
Use shorter or heavier
gauge extension cord.
Sulfated battery will
eventually take a normal
charge after a period of
time. If the battery will
not take a charge, have a
qualified technician test the
battery.
Continue to charge battery.
Continue charging. Buzz is
not abnormal.