Schumacher Automatic PWI70300A - Manual (Page 11)

• 11 •
PROBLEM POSSIBLE CAUSE REASON/SOLUTION
The charger is
making an audible
clicking sound.
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.
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.
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.
Short or no start
cycle when cranking
engine.
Drawing more than 350 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 350 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 fitting 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 40 amp
manual rate to help assist in cranking.
Charger will not turn
on when properly
connected.
AC outlet is dead.
Blown Fuse.
Poor electrical connection.
Check for open fuse or circuit breaker
supplying AC outlet.
Replace the fuse (15 Amp fuse).
Check power cord and extension cord for
loose fitting 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.
The measured
current is much
lower than what was
selected.
The charger reached the
maximum voltage and is
reducing the current.
No problem; this is a normal condition.