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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

04/26/21

Message Overview:

Message Name:

AIR CONDITIONING NOT COOLING

Identifier: 215OBS001
Effectivity: AIRCRAFT 20501 - 20999
System: Air Conditioning
Associated CAS: None
System Description: 21-51-00
Schematic Diagram: 21-61-00
Wiring Diagram: 21-61-21 (Cabin Vents)
21-61-25 (Cockpit Vents)
21-61-29 (Hot Air Temp Sensors)

Message Description:

The air-conditioning temperature is high.

Possible Causes:

  • Duct Temperature Sensor (DTS)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Cleaning of the Ventilated Temperature Sensor AMM 21-61-00-110-801

Troubleshooting Recommendations:

  1. See AIR COND TEMP HIGH (amber) for troubleshooting.

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