TP-6515 10/07 29Section 4 Troubleshooting
4.4 Battery Charger
Troubleshooting
Use the battery charger’s LED indicators and the table in
Figure 4-3 to troubleshoot battery charger operation
problems.
Problem Cause Solution
Red LED stays
One or more inoperative or damaged cells. Load test the battery and replace, if necessary
on for more than
24 hours
Battery charger has reduced its output voltage below
the normal level due to a DC overload or a DC short.
Remove the source of the overload or short. Disconnect the
battery charger’s black (NEGATIVE) ring terminal from the
battery. Reapply AC power and the green LED only should now
light.
Onboard DC systems are drawing more current than
the battery charger can replace.
Turn off all DC equipment while charging.
Red and green
LEDs stay on for
Onboard DC systems are drawing between 1.5 and
5amps.
Turn off all DC equipment while charging.
more than
One or more inoperative or damaged cells. Load test the battery and replace, if necessary
ours
Extremely low AC voltage at the battery charger. Apply a higher AC voltage source or reduce the length of the
extension cord.
Green LED stays
Open DC output fuse. Replace AGS-10 fuse.
on when the
b
tter
is known
Faulty or contaminated terminal connections. Clean and tighten or repair all terminal connections.
to be low
One or more inoperative or damaged cells. Load test the battery and replace, if necessary.
Neither of the
LEDs turn on
No AC power available at the battery charger. Connect AC power or reset the AC breaker on the main panel.
when the AC
power is applied
Component failure. Replace battery charger.
Figure 4-3 Battery Charger Troubleshooting