Troubleshooting
Types of
Indication
problems
Charger does
No indicator lights
not work.
on.
Charger has
LED fault indicator is
no DC output.
ON.
No charging
LED fault indicator is
current.
ON and charging
percentage LED bar
flashing or blinking
in sequence.
No charging
LED fault indicator is
current.
fast flashing.
Full / float light
LED fault indicator is
won't come on
flashing. The
or full LED
charging percentage
flashing.
LED bar is flashing
or ON.
Possible causes
No mains power.
Output is short
circuited.
Reverse polarity
connection to
battery.
Battery is severely
sulphated.
Battery has a
damaged cell.
Overheat
protection mode.
Battery capacity
too large for the
battery charge
setting and it has
timed out or battery
is slightly
sulphated.
Suggested solution
Check mains connections and
make sure power is switched
ON.
Check DC connection between
charger and battery and make
sure they are not short
circuited.
Check that the crocodile clips
haven't fallen off the battery.
Check that the crocodile clips /
eyelets are connected to the
correct polarity.
Check the battery condition,
age etc.
Battery may need
replacement.
Check the battery capacity.
Move battery and charger to
cooler environment.
Check the battery charger.
Check the charger
specification matches the
battery capacity.
Battery cannot be charged and
must be replaced.
Charge rate selected might be
too low. Switch charger off and
on and try a higher charge rate
setting, providing it doesn't
exceed the maximum charge
limit for your battery.
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