Craftsman 71326 Manual De Usuario

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F01

The battery voltage is still under 

10V (for a 12V battery) or 5V 

(for a 6V battery) after 2 hours of 

charging.

The battery could be bad. Have it checked or 

replaced.

F02

The charger cannot desulfate the 

battery.

The battery could not be desulfated; have it 

checked or replaced.

F03

The battery was unable to reach 

the “full charge” voltage.

May be caused by trying to charge a large battery 

or bank of batteries on too low of a current setting. 

Try again with a higher current setting or have the 

battery checked or replaced.

F04

The connections to the battery are 

reversed.

The battery is connected backwards. Unplug the 

charger and reverse the connections to the battery.

F05

The charger was unable to keep 

the battery fully charged in maintain 

mode.

The battery won’t hold a charge. May be caused 

by a drain on the battery or the battery could be 

bad. Make sure there are no loads on the battery. 

If there are remove them. If there are none, have 

the battery checked or replaced.

F06

The charger detected that the 

battery may be getting too hot 

(thermal runaway). 

The charger automatically shuts the current off 

if it detects the battery may be getting too hot. 

Have the battery checked or replaced. 

If you get an error code, check the connections and settings and/or replace the battery.

Battery clamps do not 

spark when touched 

together.

The charger is equipped 

with an auto-start feature. 

It will not supply current to 

the battery clamps until a 

battery is properly connected. 

The clamps will not spark if 

touched together.

No problem; this is a normal 

condition.

Three LEDs come on 

for 2 seconds, then 

turn off.

The charger is plugged into an 

AC outlet.

No problem; this is normal.

The charger will not 

turn on when properly 

connected.

AC outlet is dead.

Poor electrical connection.

Battery is defective.

Check for open fuse or circuit 

breaker supplying AC outlet.

Check power cord and extension 

cord for loose fitting plug.

Have battery checked.