Schumacher SI-1275A - Manual (Page 35)

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PROBLEM POSSIBLE CAUSE REASON/SOLUTION
Short or no start
cycle when cranking
engine.
Drawing more than 75 amps.
Failure to wait 4 minutes (240
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 75 amps, crank time may
be less than 5 seconds.
Wait 4 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.
Poor electrical connection.
Check for open fuse or circuit
breaker supplying AC outlet.
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.
16. BEFORE RETURNING FOR REPAIRS
16.1 When a charging problem arises, make certain that the battery is capable of accepting a
normal charge. Double check all connections, AC outlet for the correct voltage, charger
clips for correct polarity and the quality of the connections from the cables to the clips and
from the clips to the battery system. The clips must be clean.
16.2 When a battery is very cold, partially charged or sulfated, it will not draw the full rated
amperes from the charger. It is both dangerous and damaging to a battery to force higher
amperage into it than it can effectively use in recharging.
16.3 When an UNKNOWN OPERATING PROBLEM arises, please read the complete manual and
call the customer service number for information that will usually eliminate the need for return.