17
10. TROUBLESHOOTING FAULT CODES
Code Condition
Possible
Cause
Solution
F01
Battery voltage is
less than 10 V after
10 minutes of
charging
Short circuit in the
battery.
Go to a professional Lab to
test the battery.
A load may be
connected to the
battery.
Disconnect the load and
attempt to charge again.
Battery voltage is
still less than 13 V
after multiple
reconditioning
attempts
The battery is
sulphated beyond
reconditioning.
Replace the battery.
F02
Charge voltage is
too high
Battery is 24 V, not 12
V.
Confirm that battery is 12
V.
F03
Charge current is
too high
A load may be
connected to the
battery.
Disconnect the load and
attempt to charge again.
F04
Temperature of the
charger is too high
High ambient
temperature.
Ensure adequate
ventilation. The charger
will resume charging after
cooling.
F05
Battery does not go
into Maintenance
mode after being
charged for 24
hours
Charge current is too
low, cannot fully
charge the battery
Select a higher charge
rate.
Short circuit in the
battery.
Have the battery checked.
The battery is used
during charging
Disconnect the load.
Self-discharging
current is larger than
the floating current
Select a higher charging
rate.
F06 Reverse
polarity
Battery clamps are
incorrectly connected.
Disconnect clamps and
ensure proper connection.
