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

12/05/24

Message Overview:

 Message Name:

[ACSC2-B] RH TEMP CONT VLV CMD /TCV

Message Code:

2164320ECS

Associated CAS:

R PACK AUTO FAIL
(Caution)

R PACK FAULT
(Advisory)

Reporting LRU: Air Conditioning System Controller (ACSC) 2
System Description: 21-60-00 - Temperature Control
Schematic Diagram: 21-52-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-52-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

The Temperature Control Valve #2 position does not agree with the Air Conditioning System Controller (ACSC) 2 command.

Possible Causes:

  • Right Temperature Control Valve (TCV) (L29)
  • Air Conditioning System Controller (ACSC) 2 (A88)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

NOTES:

  • Ensure the ACM is running efficiently and has no air leaks.

Quick Links:

Removal of the Temperature Control Valves AMM 21-52-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Temperature Control Valves AMM 21-52-33-400-801 [ 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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Check the status of the temp control valve command in CAIMS (CAIMS path SYSTEM DIAG/21-00 AIR CONDITIONING/ACSC-2B/LRU TEST/R ACSC CH.B CNTL PNL & VALVE DATA).
  2. Interchange Temperature Control Valve 2 with Temperature Control Valve 1.

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

  3. Interchange ACSCs. 

    1. If system checks are good, replace defective ACSC.
    2. If fault remains, continue with next step.

  4. Perform wiring checks between the Temperature Control Valve and ACSC 2

    1. Repair defective wiring.

  5. Do close out.

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