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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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

01/25/21

Message Overview:

AIR COND TEMP FAIL
(Caution)

DDG Reference: 21-61
Pilot Action (QRH): ENVR 06-5
System Description: 21-51-00
Schematic Diagram: 21-61-00
Wiring Diagram: 21-61-21
21-61-25

Message Description:

The amber 'AIR COND TEMP FAIL' caution CAS message indicates the automatic temperature control system has failed.

  • System monitoring has failed, the IACS can not control the air conditioning system properly.
  • Check the IASC controller for faults.

Possible Causes:

  • Integrated Air System Controller 1 - FWD (IASC 1) (A55)
  • Integrated Air System Controller 2 - AFT (IASC 2) (A56)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Cabin Pressure Control System AMM 21-31-00-710-801
Removal of the Integrated Air System (IAS) Controller AMM 21-31-01-000-801
Installation of the Integrated Air System (IAS) Controller AMM 21-31-01-400-801
Operational Test of the Integrated Air System (IAS) Controller AMM 21-31-01-710-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Interrogate the MDC as follows:

    1. On the cursor control panel, ensure the toggle switch is to the right and select Anti-Ice, ECS and Fuel buttons simultaneously. The MDC main menu should now be displayed on Display Unit #3.
    2. Using the joystick, select Current Faults (if the fault is active) or Aircraft History to research stored faults. From Aircraft History you can then select Fault Message History and locate the air condition fault logged.
    3. Select the MDC fault from the drop down below to provide additional information to assist in troubleshooting.

45_aircraft_fault_history

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