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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 A-I PRESS XDCR/WRG

Fault Code:

2164416ECS

Associated CAS:

R PACK FAULT
(Advisory)

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

Fault Description:

Right Pack Anti-Ice Pressure Sensors has been detected out of range by Air-Conditioning System Controller (ACSC) 2 Channel B.

Possible Causes:

  • Anti-Icing Pressure Sensor 2 (MT107)
  • Air-Conditioning System Controller (ACSC) 2 (A88)
  • Junction Box (JB6)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-21-0160 - "PACK FAULT" CAS message while CAIMS / OMS is active

Forum Articles/Infoservice/Newsletter: None

CAIMS has Pack Pressure XDCR. Data for ACSC controllers on all 4 channels. This will show sensor data and give you an idea of problem areas.

If CAIMS messages [ACSC2-A] RH PCK IN FLOW SENS/WRG, [ACSC2-A] RH PCK IN PRESS XDCR/WRG,[ACSC2-B] RH PCK IN FLOW SENS/WRG, and [ACSC2-A] RH PCK IN PRESS XDCR/WRG all shown, most possible cause is the SPDA No.4 failure.

Quick Links:

Removal of the Anti-Icing Pressure Sensors AMM 21-52-41-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Anti-Icing Pressure Sensors AMM 21-52-41-400-801 [ 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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Check CAIMS status of the Pack Anti-Ice Pressure Sensors (SYSTEM DIAG/21-00 AIR CONDITIONING/ACSC 2-B/LRU TEST/R ACSC CH. B PACK PRESSURE SENSOR DATA).
  2. Swap Pack Anti-Ice Pressure Sensor 2 with Pack Anti-Ice Pressure Sensor 1.

    1. If system checks are good, replace Pack Anti-Ice Pressure Sensor 2 and do close out.
    2. If fault remains, continue with next step.

  3. Perform a wiring check between RH Pack Anti-Ice Pressure Sensor, JB6, ACSC 2 and Gnd.

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

  4. Swap ACSC 2 with ACSC 1.

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

  5. Replace JB6.
  6. Do close out.

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