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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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06/12/19

Message Overview:

Fault Message:

[ACSC2-B] RH FLOW CONT VLV CMD /FCV

Fault Code:

2164321ECS

Associated CAS:

R PACK AUTO FAIL
(Caution)

R PACK FAULT
(Advisory)

Reporting LRU: Air Conditioning System Controller (ACSC) 2
System Description: 21-51-00
Schematic Diagram: 21-51-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-52-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Right Flow Control Valve has been detected failed either in opened or closed position.

Possible Causes:

  • Air Conditioning System Controller 2 (A88)
  • Compressor Pneumatic Overheat-Sensors (CPNOH)
  • Right Flow Control Valve (L30)
  • Junction Box (JB6)
  • Secondary-Power Distribution Assemblies (SPDA) 3 (A15)
  • Data Acquisition Units (DAU) 2 (A18)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-21-0160 - "PACK FAULT" CAS message while CAIMS / OMS is active (Global Express / XRS - 9002 to 9312, 9314 to 9380, 9384 to 9429 and Global 5000 - 9127 to 9383, 9389 to 9400, 9404 to 9431 and 9998)

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Flow Control Valves AMM 21-51-25-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flow Control Valves AMM 21-51-25-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Compressor Pneumatic Overheat-Sensors AMM 21-52-17-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Compressor Pneumatic Overheat-Sensors AMM 21-52-17-400-801 [ 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 Junction Box JB6 AMM 24-00-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Junction Box JB6 AMM 24-00-13-400-801 [ 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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform leak check of the sense line between FCV2 and CPNOH.
  2. Swap FCV 2 with FCV 1.

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

  3. Swap CPNOHs.

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

  4. Swap ACSC 2 with ACSC 1.

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

  5. 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.

  6. Swap SPDA 3 with SPDA 2.

    1. If the system check is good, replace SPDA 3 and do close out.
    2. If the fault remains, continue with next step.
      NOTE 1: If SPDA 3 has been swapped with SPDA 4 a fault may have been transferred to another system on SPDA 2 ref Build 4 load lists with Pinout.xls.
      NOTE 2: When swapping SPDAs, it is possible to loose your DC cabin feeds. Check the EMS-CDU Switch Control Page 3 under SYSTEM - CNTL button. First page is AC feeds 2nd and 3rd are DC feeds that will toggle off.

  7. Perform wiring check of all wiring/circuits related to the FCV.

    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.

  8. Remove JB6 and check K26 operation.
  9. Perform continuity check of JB6.

    1. If there is continuity, repair the defective associated wiring as required and do close out.
    2. if there is no continuity, continue with next step.

  10. Replace JB6.
  11. Do close out.

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