TROUBLESHOOTING
WARNING: During troubleshooting, if there is a need to connect/disconnect the
unit from battery, follow the steps outlined in "Important Safety Instructions" at
the front of this manual and the warning" To reduce risk of a spark near the
battery".
Power On/Off
Problem
Reason
Possible Solutions
Power off &
Battery Connected
Screen indicates
voltage 8V
Battery reverse
connecting
Please reverse the
connecting
Screen indicates
voltage and "BAD"
alternately, battery
capacity indicator
not lit
The voltage
indicates between
8V & 9.6V
The battery is bad
and needs
changing. Battery is
over discharged,
please try to charge
it immediately
"FAULT" indicator
lit
Lit battery reverse
connection
Reverse the
connection
Power On &
Battery connected
Screen indicates
"000" battery
indicator not lit
Battery is not
connected
Ensure the battery
is well connected
Screen indicates
"FAU", not
charging battery
Connected to
wrong battery; or
battery capacity is
too low to be
charged
Check battery type
and avoid
connecting 6V/24V
battery; Avoid
discharging when
charging battery
Screen indicates
"FAU", not
charging battery,
FAULT indicator lit
Battery reverse
connection
Reverse the
connection
Screen indicates
voltage and "BAD"
alternately, battery
capacity indicator
blinking
The voltage
indicates between
9.7V & 12.6V
Battery is charging;
this is normal
condition
The screen only
indicates the
voltage, the
battery capacity is
blinking
The voltage
indicates between
12.7V & 14.8V,
The battery
capacity is over
80%
