TP-6953 7/19172 Section 9 Component Testing and Adjustment
9.12.4 Charger Troubleshooting
1. No charger LEDs illuminate:
D Confirm AC/DC connections are tight and
correct.
D Inspect AC/DC cable connectors for wear and
tear.
D Verify AC power is present.
2. Charger LEDs are blinking:
D Confirm AC/DC connections are tight and
correct.
D Inspect AC/DC cable connectors for wear and
tear.
D Confirm battery voltage is greater than 5 VDC
(for a 12 volt battery) or 1 0 VDC (for a 24 volt
battery).
D If battery voltage is less than 5 VDC (for a 12 volt
battery) or 10 VDC (for a 24 volt battery) and
increasing, leave charger connected, this is
normal operation.
D Correct operation should occur when battery
voltage is greater than 5 VDC (for a 12 volt
battery) or 10 VDC (for a 24 volt battery).
D Confirm that an overvoltage condition does not
exist.
3. Charger LEDs are correct, but the battery does
not charge properly or not at all:
D Perform items listed under 1 above.
D If possible, measure the battery current and
confirm it is within specification.
D If the battery current is correct, confirm there is
no unintended loading.
D If it is not possible to measure battery current,
disconnect all cables and consult the factory.
4. Charger LEDs indicate an overtemp condition:
D Confirm adequate ventilation in the charger
vicinity.
D Provide cooling and/or allow time for the charger
to cool.
D Normal operation will resume automatically
when the thermal shutdown has terminated.
5. Battery has an odor, is hot, or is sizzling:
Note: The battery may no longer be suitable for
use.
D Stay clear of the battery until the odor has
subsided and obtain eye protection.
D Immediately turn off AC power and remove all
loads.
D Ventilate the area, do not generate any spark o r
flame.
Note: If the charger is still not operational after
performing the above checks, disconnect all
cables and contact an authorized
distributor/dealer for service.
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