Troubleshooting - Schumacher Electric SWI-1224 Owner's Manual

16.

TROUBLESHOOTING

PROBLEM
No reading on the ammeter.
Ammeter reading stays high.
Ammeter reads less than
selected charge rate when
charging a discharged battery.
The charger is making an
audible clicking sound.
Charger makes a loud buzz
or hum.
POSSIBLE CAUSE
Charger is not plugged in.
No power at the receptacle.
Clips are not making a good
connection to the battery.
Connections are reversed.
Battery is defective (will not
accept a charge).
Battery is severely discharged.
Wrong battery voltage.
Extension cord is too long or
wire gauge is too small.
Weak cell or sulfated plate in
battery.
Battery is only partially
discharged.
Circuit breaker is cycling.
Battery is defective.
Shorted battery cables or clips.
Severely discharged battery,
but otherwise it is a good
battery.
Reverse connections at battery.
Transformer laminations vibrate
(buzz).
Shorted Diode Assembly or
Output Rectifier Assembly
(hum).
• 42 •
REASON/SOLUTION
Plug the charger into an AC
outlet.
Check for open fuse or circuit
breaker supplying AC outlet.
Check for poor connection to
battery and frame. Make sure
connection points are clean.
Rock clips back and forth for a
better connection.
Unplug the charger and reverse
the clips.
Have battery checked.
Continue charging battery for
two more hours. If problem
continues have the battery
checked.
Verify the voltage settings on
the charger are correct.
Use a shorter or heavier gauge
extension cord.
A sulfated battery will eventually
take a normal charge if left
connected. If the battery will not
take a charge, have it checked.
Continue to charge the battery.
The settings may be wrong.
Check the charger settings.
Have the battery checked.
Circuit breaker cycles when
current draw is too high. Check
for shorted cables or clips and
replace if necessary.
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.
Shut the charger off and correct
the lead connections.
No problem, this is a normal
condition.
Have charger checked by a
qualified technician.