Cummins

442

UnclassifiedCooling

What This Code Means

Battery voltage below 11 V; Battery does not maintain a charge; Battery voltage is high; Engine intake manifold temperature has exceeded 185 °F (85 °C) for more than 90 seconds; Low oil rifle pressure; Engine shutdown; Communication between the engine control (ECM) and the PCC is severed; CAN Data Link Degraded warning; Battery voltage is below 24 VDC and approaching low level; Unpredictable equipment operation; Low Battery 1 Voltage warning; Battery voltage to the control is approaching high level (exceeding 32 VDC); Potential damage to the control; High Battery 1 Voltage warning

Possible Causes

  • •Battery not completely charged
  • •Battery is old
  • •Incorrect battery voltage setup
  • •Battery voltage above high battery voltage threshold
  • •Battery charger overcharging battery
  • •Faulty engine DC alternator
  • •High ambient temperature
  • •Enclosure air intake blocked
  • •Coolant level is below specification
  • •Radiator blocked
  • •Enclosure air discharge blocked
  • •Fan belt is broken or loose
  • •Low oil level
  • •Oil system issues (lines or filters)
  • •Active E-Stop button
  • •Dirty battery terminals or loose connections
  • •Low electrolyte level
  • •Discharged or defective battery
  • •Incorrect battery charge float level

Suggested Actions

  1. 1Using a voltmeter or multimeter, determine if the voltage is below 11 V. If so, recharge the battery.
  2. 2Replace the battery.
  3. 3Make sure the correct batteries are installed.
  4. 4Make sure the correct battery charger is installed.
  5. 5If the previous steps do not resolve the problem, contact your Cummins service representative.
  6. 6Reduce loads or recirculation of discharge air to generator in elevated ambient.
  7. 7Inspect enclosure air intake for dirt, debris, or obstructions.
  8. 8Remove blockage or snow/ice buildup as applicable.
  9. 9Check coolant level.
  10. 10Add coolant as necessary.
  11. 11Inspect radiator for dirt, debris or obstructions.
  12. 12Allow the engine to cool down completely before proceeding with checks
  13. 13Check the oil level, lines and filters
  14. 14Replenish oil level if low
  15. 15Reset the control and restart after locating and correcting the problem
  16. 16Allow the engine to cool down completely before proceeding
  17. 17Ensure the E-Stop button is not active
  18. 18Reset the Local/Remote Emergency Stop
  19. 19If the engine can be stopped, allow the engine to cool down completely before proceeding
  20. 20Clean battery terminals and tighten all connections

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