PROBLEM
The charger is making
an audible clicking
sound.
Charger makes a loud
buzz or hum.
Engine start does
not work.
15. BEFORE RETURNING FOR REPAIRS
If these solutions do not eliminate the problem, or for more information
about troubleshooting, contact customer service for assistance:
For REPAIR OR RETURN, contact Customer Service at 1-800-621-5485. DO NOT SHIP
UNIT until you receive a RETURN MERCHANDISE AUTHORIZATION (RMA) number
from Customer Service at Schumacher Electric Corporation.
POSSIBLE CAUSE
Circuit breaker is cycling.
Battery is defective.
Shorted battery cables
or clamps.
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).
Drawing more than 150 amps.
Failure to wait 3 minutes (180
seconds) between cranks.
The charger may be
overheated.
Battery may be severely
discharged.
www.batterychargers.com
or call 1-800-621-5485
Monday-Friday 7:00
• 10 •
REASON/SOLUTION
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 clamps 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.
Crank time varies with the
amount of current drawn. If
cranking draws more than 150
amps, crank time may be less
than 3 seconds.
Wait 3 minutes of rest time
before the next crank.
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, to
help assist in cranking.
to 5:00
CST
am
pm