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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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06/06/19

Message Overview:

Fault Message:

[ACSC1-A] AFT VENT TEMP SENS /WRG

Fault Code:

2161419ECS

Associated CAS:

L PACK FAULT
(Advisory)

Reporting LRU: Air Conditioning System Controller (ACSC) 1
System Description: 21-60-00
Schematic Diagram: 21-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-21-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Aft Ventilated Temperature Sensor has been detected out of range by Air Conditioning System Controller (ACSC) 1 Channel A.

Possible Causes:

  • Aft Ventilated Temperature Sensor (B16)
  • Air Conditioning System Controller (ACSC) 1 (A87)
  • 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

Airborne dust from the carpet and the air inside the aircraft often builds up inside the Ventilated Temperature Sensors. Cleaning all three ventilated sensors regularly will prevent failures. Use a small paint brush, and a light vacuum.

Quick Links:

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 Ventilated Temperature Sensors AMM 21-60-25-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Ventilated Temperature Sensors AMM 21-60-25-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to System Diagnostics AMM 45-45-00-970-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Ensure sensor has no obstructions clean and Access Systems Diagnostics and check if data is valid for current temperature conditions.

    1. If data is valid, do close out.
    2. If data does not match current conditions, continue with next step.

  2. Swap Aft Vent Temperature Sensor with Fwd Vent Temperature Sensor.

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

  3. Perform a wiring checks between Aft Vent Temperature Sensor and ACSC 1.

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

  4. Replace ACSC 1.
  5. Do close out.

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