background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

06/06/19

Message Overview:

Fault Message:

[ACSC1-A] FWD VENT TEMP SENS /WRG

Fault Code:

2161420ECS

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:

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

Possible Causes:

  • Fwd Ventilated Temperature Sensor (B15)
  • 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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Clean Fwd Ventilated Temperature Sensor.
  2. Visually verify that the internal fan inside the sensor is turning, and no dust is present inside the unit.
  3. Verify Power (28 VDC) at B15P1-1, and ground at B15P1-2.
  4. Swap Fwd Vent Temperature Sensor with Cockpit or Aft sensor.

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

  5. Perform a wiring checks between Fwd Vent Temperature Sensor and ACSC 1 and Fwd Ventilated Temp Sensor and Ground.

    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.

  6. Replace ACSC 1.
  7. Do close out.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.