JLG E450A Service And Maintenance Manual page 101

NO LIGHTS AT ALL
No Lights at all indicate that AC power to the charger is not
connected or that the AC voltage is too low. It could also
indicate an internal failure in the charger.
1. Check the connections to AC power. Check for AC volt-
age between 90 and 260 VAC at the charger.
2. If the AC voltage is verified to be correct at the connec-
tion to the charger, and the charger still displays no
lights at all, return the charger for service.
FAULT LED FLASHING
The Fault LED flashes to indicate the microcontroller inside
the battery charger has detected a fault. The fault detected
is indicated by the number of flashes. Count the number of
flashes to determine the fault.
With any battery system, the most common problem will
be a faulty battery connection. Because of the high likeli-
hood of a battery connection problem, it is always worth-
while to confirm that all connections are good before
checking for any other problems.
[1 Flash] - High Battery Voltage
1. Indicates a high battery voltage. Check that the battery
charger voltage is consistent with the battery pack volt-
age. The first two digits of the four digit model name
indicate the battery voltage the charger supports.
2. Check for wiring errors.
3. This fault will automatically clear and the charger will
restart charging when this problem is removed.
4. High battery voltage could also occur if there is another
source charging the battery. Disconnect any other
sources during charging.
5. If this problem does not clear after the battery voltage is
confirmed to be less than 2.5V per cell, return the char-
ger for service.
[2 Flashes] - Low Battery Voltage
1. Indicates either a battery failure, no battery connected,
or a lower than expected battery voltage. Check the
battery and battery connections.
2. Check the nominal battery voltage. The first two digits
of the four digit model name indicate the battery volt-
age the charger supports. Confirm that a nominal bat-
tery voltage is the same as the charger voltage.
3. This fault will clear automatically when the low battery
voltage problem is rectified.
4. If this problem does not clear after the battery voltage is
confirmed to be higher than 1.0V per cell and all con-
nections are good, return the charger for service.
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SECTION 3 - CHASSIS & TURNTABLE
[3 Flashes] - Charge Timeout
Indicates the battery failed to charge within the allowed
time. This could occur if the battery is of larger capacity
than the algorithm is intended for. In unusual cases it could
mean charger output is reduced due to high ambient tem-
perature. It can also occur if the battery is damaged, old, or
in poor condition.
1. Check the battery for damage such as shorted cells and
insufficient water. Try the charger on a good battery.
2. If the same fault occurs on a good battery, check the
connections on the battery and connection to AC, and
the AC voltage itself.
3. Confirm that the nominal battery pack voltage is the
same as the battery charger voltage.
4. This fault must be cleared manually by unplugging the
AC, waiting 30 seconds and reconnecting the AC power.
5. If a charger displays this fault on a battery pack, and the
pack is of questionable status, reset the charger by dis-
connecting AC for 30 seconds, and then reconnect the
AC to start a new charge cycle. After a few charge cycles,
this problem could stop occurring as the pack "recovers."
[4 Flashes] - Check Battery
This fault indicates the battery pack could not be trickle
charged up to the minimum level required for the normal
charge cycle to be started.
1. Check that none of the battery pack connections
between modules are reversed or incorrectly connected.
2. Check that one or more cells in the battery are no
shorted.
3. Confirm that the nominal battery pack voltage is the
same as the battery charger voltage.
4. Try the charger on a good battery.
5. If this fault occurs, the battery is likely in poor condition.
Try to recover the pack with a charger that can charge
the individual cells - such as an automotive charger. Be
sure to set this charger to the appropriate voltage - 6V
per 6V battery, 12V per 12V string/battery.
[5 Flashes] - Over Temperature
This fault indicates the charger has become too hot during
operation. Though not damanging to the charger, charge
time will be extended significantly.
1. This fault indication will not clear automatically, but the
charger will restart charging automatically when the
temperature drops. The fault indicaiton must be cleared
manually by unplugging the AC, waiting 30 seconds and
reconnecting the AC power.
2. If possible, move the machine to a cooler location.
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