ES

UnclassifiedGeneral

What This Code Means

Audiovisual alarm or common fault relay activated on Common fault/prealarm line 2 (Terminal 32A); Emergency stop switch not functioning; Emergency stop relay (K4) inactive

Possible Causes

  • •AHET (Anticipatory high engine temperature) fault
  • •ALOP (Anticipatory low oil pressure) fault
  • •AUX (Auxiliary) fault
  • •Auxiliary (AUX) fault (Terminal 26)
  • •Batterycharger fault
  • •ES (Emergency stop) fault
  • •Emergency stop (ES) fault (Terminal 48)
  • •Emergency stop switch is not connected across terminals TB1-1 and 1A
  • •Emergency stop switch is not used and no jumper is installed
  • •HET (High engine temperature) fault
  • •High engine temperature (HET) fault (Terminal 36)
  • •LF (Low fuel) fault
  • •LOP (Low oil pressure) fault
  • •LWT (Low water temperature) fault
  • •Low battery volts
  • •Low oil pressure (LOP) fault (Terminal 38)
  • •OC (Overcrank) fault
  • •OS (Overspeed) fault
  • •Open circuit across emergency stop terminals TB1-1 and 1A
  • •Overspeed (OS) fault (Terminal 39)

Suggested Actions

  1. 1Activate audiovisual alarm or common fault relay
  2. 2Connect battery charger alarm contact to TB1-62
  3. 3Connect batterycharger alarm contact to TB1-61
  4. 4Connect emergency stop across terminals TB1-1 and 1A
  5. 5Connect fuel level sensor to TB1-63
  6. 6Connect jumper across terminals 1 and 1A
  7. 7Connect jumper across terminals 1 and 1A if emergency stop switch is not used
  8. 8Use a remote annunciator and/or audiovisual alarm kit as an indicator with a dry contact kit connected to controller terminal strip TB1

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Get a diagnosis walkthrough for ES on your specific Rehlko unit — cited to the OEM manual, not a forum guess.

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