Cummins

1435

UnclassifiedCooling

What This Code Means

Engine fails to start; Red Shutdown status LED illuminated; Shutdown condition indicated on display; Engine coolant temperature is below the low coolant temperature warning threshold; Engine has begun to overheat; Engine coolant temperature has risen to an unacceptable level; Engine is operating near cooling system capacity; Engine has overheated; Coolant temperature has risen above the shutdown trip point; Coolant level is low

Possible Causes

  • •Ambient temperature too cold for specified generator set
  • •Blockage in coolant system
  • •Coolant heater malfunction or not installed
  • •Coolant leakage
  • •Emergency Stop button is pressed
  • •Faulty blower fan or circulation pumps on remote radiator installations
  • •Faulty or incorrectly configured PCCNet Annunciator
  • •Higher ambient temperature
  • •Increase in load
  • •Loose or damaged fan belt
  • •Low coolant level
  • •Obstructions to cooling airflow
  • •Open circuit or short circuit in wiring from TB2-8 to the Low Coolant Temp sender
  • •Threshold is set too high

Suggested Actions

  1. 1Allow the engine to cool down completely before proceeding with checks.
  2. 2Check for obstructions to cooling airflow and correct as necessary.
  3. 3Check the blower fan and circulation pumps on remote radiator installations.
  4. 4Check the coolant level and replenish if low.
  5. 5Check the fan belt and repair or tighten if necessary.
  6. 6Check the wiring from the back of the PCCNet Annunciator at TB2-8 to the Low Coolant Temp sender and ensure an open circuit or short circuit does not exist
  7. 7Contact your Cummins service representative
  8. 8Investigate and remedy the cause of the emergency stop before attempting a reset and start
  9. 9Look for possible coolant leakage points and repair if necessary.
  10. 10Make sure the coolant heater is installed and powered
  11. 11Make sure the generator set meets its performance specifications
  12. 12On the operator panel, access the LCT Warning Threshold parameter by navigating to Setup > Genset Setup > LCT Warning Threshold and verify that it is set to an appropriate threshold
  13. 13Press the Auto or Manual Run button as previously determined
  14. 14Press the Off button on the Operator Panel to acknowledge this action
  15. 15Pull (or twist and pull) the Emergency Stop button out
  16. 16Refer to the PCCNet Annunciator Operator's Manual to ensure that the Annunciator is configured correctly for Active Open or Active Closed inputs
  17. 17Review fault code 151 correction list for other possible causes.

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