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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

06/12/19

Message Overview:

Fault Message:

[ACSC2-B] EMER RAM VLV CMD /ERAV

Fault Code:

2164319ECS

Associated CAS:

RAM AIR FAIL
(Advisory)

Reporting LRU: Air Conditioning System Controller (ACSC) 2
System Description: 21-53-00
Schematic Diagram: 21-53-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-52-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Emergency Ram Air Valve (ERAV) has been detected open while it is not commended to opening by the Push Button Annunciator (PBA).
Or
The ERAV has been detected closed while it is commended to opening by the Push Button Annunciator (PBA).

Possible Causes:

  • Air Conditioning System Controller 2 (A88)
  • Bleed Air Control Panel (AP8)
  • Data Acquisition Units (DAU) 1 (A17)
  • Data Acquisition Units (DAU) 2 (A18)
  • Emergency Ram Air Valve (ERAV) (L25)
  • Secondary-Power Distribution Assemblies 1 (A13)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Ram Air Valve AMM 21-53-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Ram Air Valve AMM 21-53-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Air-Conditioning System Controllers AMM 21-60-21-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Air-Conditioning System Controllers AMM 21-60-21-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Secondary-Power Distribution Assemblies AMM 24-62-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Secondary-Power Distribution Assemblies AMM 24-62-01-400-801 [ 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 ]
Removal of the BLEED-AIR Control Panel AMM 36-11-57-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the BLEED-AIR Control Panel AMM 36-11-57-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Using CAIMS, under LRU test, look at the discrete inputs for DAU 1. Make sure RAV Open (D21) and RAV Close (D28) are in accordance with the RAV switch position.". Then Select RAV to On. Make sure the Status change accordingly.

    1. If its satisfactory, go to step 9.
    2. If its not satisfactory, then continue with next step.

  2. Perform a wiring checks between RAV and DAU 1.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  3. Perform a wiring checks between RAV and Bleed Air Control Panel.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  4. Perform a wiring checks of the Control Panel itself and its grounds.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  5. Perform a wiring checks of the RAV ground.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  6. Make sure power is available from SPDA 1.
  7. Swap DAU 1 with DAU 2.

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

  8. Replace RAV.

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

  9. Using CAIMS, under LRU test, look at the discrete inputs for DAU 2. Make sure Ram Air On Selected show position in accordance with the switch selection. Then Select RAV to On. Make sure the Status changes accordingly.

    1. If its not satisfactory, continue with next step.
    2. If its satisfactory, go to step 13.

  10. Perform a wiring checks of the wires between DAU 2 and Bleed Air Control Panel AP8.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  11. Perform a wiring checks of the Control Panel itself and its grounds.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  12. Swap DAU 2 with DAU 1.

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

  13. Using CAIMS, under LRU test, look at the discrete inputs for ACSC 2. Make sure RAV show "Close". Then Select RAV to On. Make sure the Status changes to "Open".

    1. If its satisfactory, do close out.
    2. If its not satisfactory, continue with next step.

  14. Perform a wiring checks of the wires between ACSC 2 and Bleed Air Control Panel AP8.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  15. Perform a wiring checks of the Control Panel itself and its grounds.

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  16. Replace ACSC 2.
  17. Do close out.

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