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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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06/28/19

Message Overview:

Fault Message:

DISC OUT FAN ENABLE / SFCU#1

Fault Code:

2751252STD

Associated CAS:

None

Reporting LRU: Slat/Flap Control Unit (SFCU)
System Description: 27-52-00
Schematic Diagram: 27-50-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-50-07 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Discrete output of the Slat/Flap Control Unit (SFCU) that enable the Tray Fan is invalid.

Possible Causes:

  • Slat/Flap Control Unit (SFCU) 1 (A124)
  • Slat/Flap Control Unit (SFCU) 1 Tray Fan (B8)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Performing a SLAT FLAP RESET on the EMS CDU may clear this fault.

NOTE: Wait at least one minute after SFCU reset to allow self test to run.

Quick Links:

Removal of the Slat/Flap Control Unit (SFCU) AMM 27-51-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Slat/Flap Control Unit (SFCU) AMM 27-51-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Swap SFCU 1 with SFCU 2.

    1. If system checks are good, replace SFCU 1 and do close out.
    2. If fault remains, continue with next step.

  2. Perform wiring checks between the SFCU to the tray fan connector (B8P1).

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.
      NOTE: The fan is energized by 28 VDC on VE(+) and VE(-). The Fan Performance Sensor (FPS) is providing impedance.

  3. Replace the fan under the SFCU 1 Tray.
  4. Do close out.

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