marinco.com | 800.307.6702
9
INSTRUCTION MANUAL:
CHARGE PRO
®
BATTERY CHARGERS
Troubleshooting
Display
Operating Condition
Solution
Red LED stays
on for more
than 24 Hrs
1. One or more defective or
damaged cells.
2. Charger has reduced its
output voltage below the
normal level due to a DC
overload or a DC short.
3. On-board DC systems are
drawing more current than
the charger can replace.
1. Load test the battery and replace
if necessary.
2. Remove the source of the overload or
short. Disconnect the charger's black
(NEGATIVE) terminal from the battery.
Reapply AC power and the green LED
only should now light.
3. Turn off all DC equipment while
charging.
The red and
green LED’s
stay on for
more than
24 Hrs
1. On-board DC systems are
drawing more than
2 amps.
2. One or more defective or
damaged cells.
3. Extremely low AC voltage
at the battery charger.
1. Turn off all excess DC equipment
while charging.
2. Load test the battery and replace
if necessary.
3. Apply a higher AC voltage source or
reduce the length of the extension
cord.
4. Check battery manufacturer’s specs
on battery charging.
Green LED
stays on when
the battery is
known to be
low
1. Open DC output fuse.
2. Faulty or contaminated
terminal connections.
3. One or more defective or
damaged cells.
1. Replace DC output fuse with a 10
amp fuse for model 28106,15 amp
fuse for model 28210 output.
2. Clean and tighten or repair all
terminal connections.
3. Load test the battery and replace
if necessary.
Neither of
the LED’s turn
on when the
AC power is
applied
1. No AC power available at
the charger
2. Component failure
1. Connect AC power or reset the AC
breaker on the main panel
2. Go to marinco.com under the
resources tab, refer to FAQ section.
Green blinks
1. Charger is not charging
the battery
1. 28210 charger cannot get battery to
charge. Check to see if battery is too
large for the charger or if there is a
problem with the battery. Unplug the
charger from the AC power to start
the charger again.
Red & Green
blink
1. Charger is not charging
the battery
1. 28106 charger cannot get the battery
to charge. Check to see if the battery
is too large for the charger or if there
is a problem with the battery. Unplug
the charger from the AC power to
start the charger again.
