Troubleshooting; Before Returning For Repairs - DieHard 28.71331 Operator's Manual

13. TROUBLESHOOTING

PROBLEM
Charger will not turn
on when properly
connected.
The Boost-Charging
LED is flashing.
The Boost-Charging
LED does not turn off.
Charger does not detect
a low voltage battery.
Engine start does
not work.

14. BEFORE RETURNING FOR REPAIRS

• When a charging problem arises, make
certain that the battery is capable of
accepting a normal charge. Double check
all connections, the AC outlet for a full
120 volts, the charger clamps for correct
polarity and the quality of the connections
from the cables to the clamps and from
If the above solutions do not eliminate the problem, or for information about
troubleshooting or replacement parts, call toll-free from anywhere in the U.S.A.
POSSIBLE CAUSE
AC outlet is dead.
Poor electrical connection.
Battery is defective.
The charger has stopped in
Boost or Charge mode.
The battery is bad.
The charger is still in Boost or
Charge mode.
The charger was on for more
than 5 minutes before it was
connected to the battery.
Drawing more than 200
amps.
Failure to wait 3 minutes (180
seconds) between cranks.
The charger may be
overheated.
Battery may be severely
discharged.
1-800-732-7764
7:00 am to 5:00 pm CT, Monday through Friday
Check for open fuse or circuit
breaker supplying AC outlet.
Check power cord and extension
cord for loose fitting plug.
Have the battery checked.
The charger cannot complete the
boost or charge. Have the battery
checked and replace, if necessary.
Disconnect charger from the AC
outlet and then remove the clamps.
Do not continue to try to charge the
battery. Have the battery checked
and replace, if necessary.
This is normal. The Boost-Charging
LED will not turn off until the battery
is disconnected from the charger.
The clamps are active for only the
first 5 minutes. Switch to the OFF
position and connect the charger
to the battery. Set the switch to the
Boost/Charge/Maintain position.
Then push the rate selection button
to turn on the charger.
Crank time varies with the amount
of current drawn. If cranking draws
more than 200 amps, crank time
may be less than 5 seconds.
When the Engine Start LED blinks,
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,
use the 40A Boost rate for 10 to 15
minutes, to help assist in cranking.
the clamps to the battery system. The
clamps must be clean.
• When an UNKNOWN OPERATING
PROBLEM arises, please read the
complete manual and call the customer
service number for information. This will
usually eliminate the need for return.
• 9 •
REASON/SOLUTION