Product Manual A

6. Troubleshooting 11-2017
102 0962-0131 (Issue 6)Copyright © 2017 Cummins Inc.
6.4.3 Troubleshooting Using Fault Codes
WARNING
Some battery charger service procedures present hazards that can result in severe personal
injury or death. Only trained and experienced personnel may perform service.
WARNING
Ignition of explosive battery gasses can cause severe personal injury. Do not smoke or cause
any spark , arc or flame while servicing batteries.
NOTICE
Faults 379 (OVER CURR), 442 (HIGH BATT VOLT) and 9115 (BATT FAIL) can only be cleared by:
• Disconnecting the charger harness plug,
• Cycling through the Setup menus, or
• Recycling the power
TABLE 10. TROUBLESHOOTING USING FAULT CODES
Fault Description Possible Cause Solution
379 - OVER CURR Output Overload Output current is excessive.
Charger control may be
failing.
Cycle through the
Setup menus to try and
clear the fault. If the
fault returns, the
charger control may
have failed.
441 - LOW BATT VOLT Low Battery Voltage 1. No battery connected. Connect the battery.
2. Output breaker is in the
OFF (down) position.
Verify the output
breaker is ON (up)
position.
3. A 12V battery is connected
but the charger is set for 24V
charging.
Attach a 24V battery or
set the charger for 12V
charging.
4. Battery can no longer
maintain charge.
Replace the battery.
5. The wire between the
charger and the battery is
loose or broken.
Check the wire.
442 - HIGH BATT VOLT High Battery Voltage 1. A 24V battery is connected
but the charger is set for 12V
charging.
Attach a 12V battery or
set the charger for 24V
charging.
2. Large load dump may
have caused momentary
voltage rise.
Cycle through the
Setup menus to clear
the fault and restart
charging.