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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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Quick Links

06/20/19

Message Overview:

Fault Message:

APUGCU [GEN CURRENT LIMIT INHIB]

Fault Code:

2420232LPS

Associated CAS:

APU GEN FAIL
(Advisory)

Reporting LRU: Auxiliary Power Unit Generator Control Unit (APU GCU)
System Description: 24-22-00
45-45-00
Schematic Diagram: 24-22-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-22-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Generator current limit inhibit circuit fault detected internally by the Generator Control Unit (GCU) during continuous monitoring.

Possible Causes:

  • Auxiliary Power Unit Generator Control Unit (APU GCU) (A109)

Troubleshooting Tips:

  • Auxiliary Power Unit Generator Control Unit (APU GCU) (A109)

Quick Links:

Removal of the Generator Control Units (GCU) AMM 24-24-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Generator Control Units (GCU) AMM 24-24-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Remove power from the A/C completely. Apply power back on the A/C and access CAIMS active faults. Is the CAIMS message still present?

    1. If NO, do close out.
    2. If YES, continue with next step.

  2. Replace APU GCU.
  3. Do close out.

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