Schumacher Proseries PSW-7700 Owner's Manual page 15

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PROBLEM
Short or no start cycle when
cranking engine.
The battery is connected
and the charger is on, but is
not charging.
POSSIBLE CAUSE
Drawing more than 300
amps (12V).
Failure to wait 5 minutes
(300 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.
Clips are not making a good
connection.
13
REASON/SOLUTION
Crank time varies with the
amount of current drawn. If
cranking draws more than
300 amps, crank time may
be less than 3 seconds.
Wait 5 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 manual rate
to help assist in cranking.
Check for poor connection
at battery and frame. Make
sure connecting points are
clean. Rock clips back and
forth for a better connection.

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