JLG 1932RS/6RS Service And Maintenance Manual page 36

SECTION 3 - CHASSIS & SCISSOR ARMS
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.
[3 Flashes] - Charge Time-out
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 char-
ger output is reduced due to high ambient temperature. 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 not
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.
3-6
[5 Flashes] - Over Temperature
This fault indicates the charger has become too hot during
operation. Though not damaging 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 indication 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.
3. Confirm that dirt or mud is not blocking the cooling fins
of the charger. Clean the charger. Rinse the charger with
a low pressure hose if required. Do no use high pressure.
Do not us a pressure washer.
[6 Flashes] - Over Load/Over Temperature
This fault indicates that the batteries will not accept charge
current, or an internal fault has been detected in the charger.
This fault will nearly always be set within the first 30 seconds
of operation. If it occurs after the charger has started charging
normally, complete the following steps.
1. Try to clear the fault by unplugging the AC, waiting 30
seconds and reconnecting the ac power.
2. Check all battery connections. Look for a high resistance
connection.The most likely reason for this fault is a fault
in the battery such as a bad battery connection, an open
cell, or insufficient water.
3. This fault will occur if an internal fuse inside the charger
blows. If the green wire is shorted to ground even
momentarily, this fuse will blow. To check the fuse, mea-
sure with an ohmmeter between the green and red
wires with the AC disconnected. If a short circuit is not
measured, the fuse has blown. Return unit to a service
depot to have this fuse replaced.
4. If this fault occurs after battery charging has started,
confirm that AC power was not interrupted and that all
battery connections are good.
5. If all battery connections are good, an internal fault has
been detected and the charger must be brought to a
qualified service depot.
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