Rehlko

F3

UnclassifiedElectrical

What This Code Means

No Output; Over Voltage; Emergency Stop activated; Common Fault / Prealarm; Blown F1 fuse (remote annunciator: 3amp); Blown F2 fuse (controller: 3amp); Blown F3 fuse (engine and accessories: 15amp); Generator failure to stop; Engine fault protection; Generator failure to start; Generator failure to run; Incorrect AC voltage or current readings; Inability to select AC output for measurement; Incorrect generator voltage regulation; Unstable generator output voltage; Remote annunciator not functioning; Controller not functioning; Speed sensor not functioning; Lamp circuit board not functioning; Engine/starting circuitry not functioning; Accessories not functioning; Controller LED display is off; Generator set does not crank; Generator set cranks but does not start; Starts hard; Lacks power; Operates erratically; No AC output; Low output; Excessive drop in voltage; Generator set stops suddenly; Generator set circuit breaker trips repeatedly; Fuses blow repeatedly; Generator set overloaded;

Possible Causes

  • •AOP activated
  • •AUX activated
  • •AWT activated
  • •An outside light source is present when the LED board is removed
  • •Battery Charger Fault activated
  • •Battery connections reversed
  • •Defective dry contact kit
  • •Defective engine electrical components
  • •Defective overvoltage board
  • •Defective panel lamps, engine gauges
  • •HWT activated
  • •LOP activated
  • •Low Battery activated
  • •Low Fuel activated
  • •OC activated
  • •OS activated
  • •Remote switch activated
  • •Shorted DC supply to indicator panel
  • •Shorted controller circuit board
  • •Voltage adjustment pot circuit is open or shorted to ground

Suggested Actions

  1. 1Inspect and test AC selector switch
  2. 2Inspect and test Voltage Regulator
  3. 3Inspect and test current transformers
  4. 4Inspect and test exciter field winding
  5. 5Inspect and test fuses F1, F2, F3, F1A
  6. 6Inspect and test photo-coupling system
  7. 7Inspect and test relays K1, K2, K3, K4, K5, K20
  8. 8Inspect and test rocker switch and its connections
  9. 9Investigate and address the cause of High Water Temperature
  10. 10Investigate and address the cause of Low Oil Pressure
  11. 11Investigate and address the cause of Low Water Level
  12. 12Investigate and address the cause of Overspeed
  13. 13Isolate and repair or replace defective component.
  14. 14Replace fuse and resume operation. If fuse blows again, use chart to identify faulty component(s).
  15. 15Troubleshoot AC Voltmeter circuit
  16. 16Troubleshoot Ammeter circuit
  17. 17Troubleshoot manual controller run circuits
  18. 18Troubleshoot manual controller start circuits
  19. 19Troubleshoot manual controller stop circuits
  20. 20Troubleshoot sensing inputs to Voltage Regulator

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F4FAIL TO ACQUIREF2 (5A-T)FAIL TO ACQUIRE STANDBYF2FREQUENCY HIGHF1FREQUENCY LOWCURRENT A HIGHFS (1A-T)CONNOTDETERMHB
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