Onan

29

UnclassifiedElectrical

What This Code Means

Loss of AC Sense; Engine Stopped; Excessive Smoke Under Load; Loss of voltage sense; Loss of quad sense; Engine stopped

Possible Causes

  • •Broken voltage sense leads
  • •Control fault
  • •External shorts
  • •Faulty battery charging system
  • •Fuel supply issue
  • •Grounded or shorted quad windings
  • •Loose voltage sense leads
  • •Mechanical engine damage
  • •Overload Condition
  • •Rotor resistance open, short, or ground
  • •Stator resistance open, short, or ground

Suggested Actions

  1. 1Check AC output
  2. 2Check battery connection to battery & set
  3. 3Check battery voltage to set
  4. 4Check brush condition and contact
  5. 5Check field resistance
  6. 6Check field windings
  7. 7Check for grounded or shorted quad windings
  8. 8Check for proper field resistance reading, open to ground
  9. 9Check fuel supply
  10. 10Check governor actuator operation
  11. 11Check loads
  12. 12Check mechanical engine damage
  13. 13Check output voltage
  14. 14Check stator resistance
  15. 15Check stator resistance (opens/shorts/grounds)
  16. 16Check voltage sense leads
  17. 17Test the battery charging system and service as necessary
  18. 18Troubleshoot Control
  19. 19Troubleshoot external shorts
  20. 20Verify control plugs are fully seated
  21. 21Verify quad leads are fully seated in connector to control

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