JLG H340AJ Service And Maintenance Manual page 105

SECTION 3 - CHASSIS & TURNTABLE
Table 3-7. Detailed LED Fault Indications
Flashes Explanation and Solution
High Battery Voltage Detected - starting voltage above 2.5V/cell or voltage during charge rose above 2.7V/cell (algorithm dependent).
­ Check that the battery charger voltage is consistent with the battery pack voltage.
­ Check for wiring errors.
­ Occasionally a new, fully charged battery pack may cause this condition. Use this pack before charging it again.
­ Disconnect any other sources during charging.
­ If this problem does not clear after the battery voltage is measured to be less than 2.5V per cell, contact Delta-Q.
­ This fault will automatically clear and the charger will restart charging when the voltage drops to within operating range.
Low Battery Voltage Detected - starting voltage below 0.5V/cell
­ Check the battery and connections to the battery.
­ Check the nominal battery voltage. Confirm that the nominal battery voltage is the same as the charger voltage.
­ If this problem does not clear after the battery voltage is measured to be higher than 1V per cell and all connections are good, contact Delta-Q.
­ This fault will clear automatically when the returns within range.
Charge Timeout - Indicates the battery failed to charge within the time allowed by the charge algorithm. 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 temperature. It can also occur if the battery is damaged, old, or in poor condition.
­ Check the battery for damage such as shorted cells and insufficient water. Try the charger on a good battery.
­ If the same fault occurs on a good battery, check the connections on the battery and connection to AC power, and AC voltage.
­ Confirm that the nominal battery pack voltage is the same as the battery charger voltage.
­ If a charger displays this fault on a battery pack, and the pack is of questionable status, reset the charger by disconnecting AC power for 30 sec-
onds, 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."
­ This fault must be cleared manually by unplugging the AC, waiting 30 seconds and reconnecting the ac power.
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.
­ Check that none of the battery pack connections between modules are reversed or incorrectly connected.
­ Check that one or more cells in the battery are not shorted.
­ Confirm that the nominal battery pack voltage is the same as the battery charger voltage.
­ Try the charger on a good battery.
­ If this fault occurs the battery pack is likely in poor condition. Try to recover the pack with a charger that can charge the individual batteries -
such as an automotive charger. Be sure to set this charger to the appropriate voltage - 6V per 6V battery, 12V per 12V string/battery.
Over-Temperature: This fault indicates the charger has become too hot during operation and has shut down. This extra fault indication (as
opposed to the flashing ammeter described above), indicates an even higher temperature was reached inside the charger. Though not damag-
ing to the charger, charge time will be extended significantly
­ 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 power, waiting 30 seconds and reconnecting the AC.
­ If possible, install the charger in a cooler location or increase cooling airflow to the cooling fins.
­ Confirm that dirt or mud is not blocking the cooling fins of the charger. If required, clean the charger by rinsing it with a low-pressure hose.
QuiQ Internal Fault: 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, be sure to
make a note of it.
­ Try to clear the fault by unplugging AC power, waiting 30 seconds and reconnecting the AC.
­ 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.
­ Other electrical hardware such as contactors, switches, etc. which are badly wired may also cause this fault.
­ 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, measure with an ohmmeter between the green and red wires with the AC disconnected. If a short circuit is not measured, the
fuse has blown. Contact Delta-Q
­ If this fault occurs after battery charging has started, confirm that AC power was not interrupted and that all battery connections are good.
­ If all battery connections are good, an internal fault has been detected. Contact Delta-Q.
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