P/N 752-648 Rev. 20121017 IR
Page
10 of 12
Troubleshooting Guide
Problem / Condition
Solution
Power ON, indicator does not light
Check electrical outlet. If controlled by a wall switch
be sure switch is on and avoid accidentally shutting
it off while charger is working.
Power-Status
indicator lights
RED
1. Polarity of wiring harness to aircraft battery is
reversed. Verify correct polarity.
2. If still remains
RED
check battery voltage. If
6
-
Volts or less battery may be damaged and should
not be recharged. If battery was just recently
removed from a load (lights, electronic equipment)
or not used for extended time without a charger-
maintainer, allow battery to “recover” by letting it
“rest” without a load. If battery is healthy and just
deeply discharged it should recover its voltage (rise
above 6 volts) sufficiently to allow charger to begin
an attempt to fully recharge it. If battery cannot be
recovered or recharged, it should be recycled.
Power-Status
indicator lights FLASHING
RED
.
1. Battery(s) may be weak, heavily sulfated, or too
large to fully charge before charger times out. Allow
battery to remain in Maintenance-Float mode for 7
2
hours or more, then attempt to charge again.
2. Battery may be so large it requires a second full
recharge.
Repeat charge cycle by pressing and
holding
Start-Stop Reset
switch for 5 sec. until
ALL indicators light.
3
. If recharging multiple batteries,
2
or more
complete recharge cycles may be needed. Repeat
full recharge by pressing Stop-Reset button again.
If still
FLASHING RED
, you may need to charge
each battery separately.
After battery has been completely charged,
Battery
Condition
indicator lights
YELLOW
Battery still has an unacceptable level of sulfation
and must remain in
Maintenance-Float
mode
(
FLASHING GREEN
indicator) for 7
2
hours or
longer. Then stop charger by pressing
Start-Stop
Reset
button and observe indicator. If still
YELLOW
repeat (up to
3
full cycles) or until
indicator lights
GREEN
.
Before battery is completely charged,
Battery
Condition
indicator lights
YELLOW
Battery may be weak due to sulfation, self
discharge, or was very deeply discharged. Attempt
a full recharge and recheck after completion. If still
YELLOW
follow procedure above.
Power-Status
and
Charge-Float
indicators both
FLASHING simultaneously
Charger has timed out before battery has
completely charged. Press and hold the
Start-Stop
Reset
button until ALL indicators flash to begin full
recharge cycle.
