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Schumacher SE-1520 Troubleshooting Guide
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PROBLEM
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POSSIBLE CAUSE
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SOLUTION
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Charger
will not turn on when properly connected.
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AC outlet is dead.
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Check for open fuse or circuit
breaker supplying AC outlet.
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Poor
electrical connection.
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Check power cord and extension
cord for loose fitting plug.
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No reading on the ammeter.
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Charger is not plugged in.
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Plug the charger into an AC
outlet.
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No power
at the receptacle.
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Check for open fuse or circuit
breaker supplying AC outlet.
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Clamps
are not making a good connection to the battery.
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Check for poor connection to
battery and frame. Make sure connection points are clean. Rock clamps back
and forth for a better connection.
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Connections
are reversed.
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Unplug the charger and reverse
the clamps.
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Battery
is defective
(will not accept a charge).
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Have battery checked.
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2 amp
charge rate is being used.
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Ammeter may show no activity at
the 2A charge rate.
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Ammeter reading stays high.
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Battery is severely discharged.
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Continue charging battery for
two more hours. If problem continues, have the battery checked.
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Wrong
battery voltage.
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Verify you are trying to charge
a 12 Volt battery.
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Ammeter reads less than selected charge rate when charging a
discharged battery.
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Extension cord is too long or
wire gauge is too small.
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Use a shorter or heavier gauge
extension cord.
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Weak
cell or sulfated plate in battery.
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A sulfated battery will
eventually take a normal charge if left connected. If the battery will not
take a charge, have it checked.
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Battery
is only partially discharged.
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Continue to charge the battery.
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The charger is making an audible clicking sound.
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Circuit breaker is cycling.
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The settings may be wrong. Check
the charger settings.
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Battery
is defective.
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Have the battery checked.
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Shorted
battery cables
or clamps.
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Circuit breaker cycles when
current draw is too high. Check for shorted cables or clamps and replace if
necessary.
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Severely
discharged battery, but otherwise it is a good battery.
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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.
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Reverse
connections at battery.
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Shut the charger off and correct
the lead connections.
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Charger makes a loud buzz or hum.
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Transformer laminations vibrate
(buzz).
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No problem; this is a normal
condition.
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Shorted
Diode Assembly or Output Rectifier Assembly (hum).
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Have charger checked by a
qualified technician.
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Engine start does
not work.
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Drawing more than 150 amps.
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Crank time varies with the
amount of current drawn. If cranking draws more than 150 amps, crank time may
be less than 3 seconds.
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Failure
to wait 3 minutes (180 seconds) between cranks.
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Wait 3 minutes of rest time
before the next crank.
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The
charger may be overheated.
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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.
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Battery
may be severely discharged.
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On a severely discharged
battery, charge for 10 to 15 minutes, to help assist in cranking.
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Schumacher User Manual Link
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