M. Trouble Shooting
PROBLEM
INDICATIONS
POSSIBLE CAUSES
SUGGESTED SOLUTION
Charger does not
work
Indicator lights not
turn on
No AC power
AC input socket fuse blown
Check AC connections are correct
Replace with correct AC fuse by qualified
electrician
No DC output
Charger - On LED is
not on, Float and
Fault LEDs are on
Output short circuit
Over temperature protection triggered
Severe over loading charger
Reverse polarity connection
DC fan locked by foreign object or
malfunction
Check DC connections between charger
and battery. Charger can auto reset if
remove the fault within 20 seconds.
Check air intake vent at bottom of charger
is blocked or not. Check charger ambient
ventilation.
Check battery AH capacity within
recommended range
Check for correct polarity, replace car
blade fuse (6)
Check DC fan
Battery does not get
full charge
All indicator LED
work normally and
sequentially
OTP LED flashing
Bad battery connection
Battery type select switch in wrong setting
Battery capacity too large
Ambient temperature too low
Battery has damaged cell or battery is too
old
Wrong set the lower power level
Check for loose contact, right cable size,
cable integrity
Recheck battery type and change to correct
battery selection
Make sure charger rating matches battery
capacity
Move battery to a room temperature
location, or get an optional temperature
sensor
Replace battery
Recheck the current selection switch (5) to
correct right setting
Long charging time,
float light does not
come on even after
12 hours charging
time.
Absorption light
remains on all the
time
Charger internal fault
Return the charger to distributor to repair
Bulk LED is on all
the time
Bulk light remains
on all the time
Wrong battery type selection
Battery is excessively depleted and the
soft charging is triggered
Battery temperature too high
Check charged battery label and change
battery type selection to correct setting
Recharge the battery after a day, if bulk
light remains after several hours, the
battery is most likely damaged and cannot
accept charge. Replace battery.
Use accessory temperature sensor
