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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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06/21/19

Message Overview:

Fault Message:

SMOKE DETECTOR 4 /WRG/DAU 3

Fault Code:

2612046WK

Associated CAS:

SMOKE AFT LAV FAIL
(Caution)

Reporting LRU: Fire Detection and Extinguishing Control Unit (FIDEEX CU)
System Description: 26-14-00
Schematic Diagram: 26-14-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 26-10-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

This message shows when the Fire Detection and Extinguishing Control Unit (FIDEEX CU) senses that Smoke Detector 4 in the Aft Lavatory is defective or both the Data Acquisition Unit (DAU) 3 and FIDEEX CU do not receive the alarm signal.

Possible Causes:

  • Fire Detection and Extinguishing Control Unit (FIDEEX CU) (A106)
  • Data Acquisition Unit (DAU) 3 (A30)
  • Smoke Detector 4 (A116)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

NOTE: If both sides (DAU 3 and FIDEEX) are not receiving the alarm, this condition will display an EICAS FAIL message: SMOKE AFT LAV FAIL (Amber).

Quick Links:

Removal of the Fire-Detection-and-Extinguishing
(FIDEEX) Control-Unit		 AMM 26-10-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Fire-Detection-and-Extinguishing
(FIDEEX) Control-Unit		 AMM 26-10-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AFT LAV Compartment Smoke Detectors SMM 26-14-52-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of AFT LAV Compartment Smoke Detectors SMM 26-14-52-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Measure for 28 VDC at Smoke Detector 4 (A116P1).

    1. If there is 28 VDC, go to step 4.
    2. If there is no 28 VDC, continue with next step.

  2. Perform wiring checks between FIDEEX CU (A106P2) and Smoke Detector 4 (A116P1).

    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.

  3. Replace FIDEEX CU.

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

  4. Perform wiring checks between Smoke Detector 4 (A116P1) and DAU 3 (A30AP1).

    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.

  5. Swap DAU 3 with DAU 1.

    1. If system checks are good, replace DAU 3 and do the close out.
    2. If fault remains, continue with next step.

  6. Replace Smoke Detector 4.
  7. Do close out.

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