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trouBlEShootinG And FAilurE CodES
15.
FAilurE
CodE
dESCription
CAuSE
F01
Battery failed to get over 10V
within 2 hours.
Could be caused by either a bad battery or trying to
charge a 6V battery on the 12V setting.
F02
Battery could not be
desulfated.
The desulfation process could not be completed –
battery is bad.
F03
Battery failed to charge
completely.
Could be caused by a bad battery or trying to charge
a large battery or bank of batteries on too low of a
current setting.
F05
The charger was unable to
keep the battery fully charged
in maintain mode.
The battery won’t hold a charge. Could 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 or the
battery may have a shorted cell. Have the battery
checked or replaced.
If you get a failure code, check the connections and settings and/or replace the battery.
proBlEM
poSSiBlE CAuSE
rEASon/Solution
No reading on the digital
display.
Charger is not plugged in.
No power at the receptacle.
Plug the charger into an AC
outlet.
Check for open fuse or circuit
breaker supplying AC outlet.
Digital Display reads
LO
when
testing the alternator.
The alternator output is 13.2
volts or less.
Have the electrical system
checked by a qualified
technician.
Digital Display reads
HI
when
testing the alternator.
The alternator output is 14.6
volts or more.
Have the electrical system
checked by a qualified
technician.
Battery clips do not spark when
touched together.
The charger is equipped with
an auto-start feature. It will not
supply current to the battery
clips until a battery is properly
connected. Unlike traditional
chargers, the clips will not
spark if touched together.
No problem; this is a normal
condition.
The charger is making an
audible clicking sound.
Circuit breaker is cycling.
Battery is defective.
Severely discharged battery,
but otherwise it is a good
battery.
The settings may be wrong.
Check the charger settings.
Have the battery checked.
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.
Charger makes a loud buzz
or hum.
Transformer laminations vibrate
(buzz).
Shorted Diode Assembly or
Output Rectifier Assembly
(hum).
No problem; this is a normal
condition.
Have charger checked by a
qualified technician.
