10/04/21
Message Overview:
Message Description:
The cyan 'AIR COND FAULT' advisory CAS message indicates a fault has been detected in the air conditioning system or there has been a loss of temperature sensing.
Possible Causes:
- Cockpit Temperature Selector (CKSEL) (R02)
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Operational Test of the Temperature Control and Indication System | AMM 21-61-00-710-801 |
| Cleaning of the Ventilated Temperature Sensor | AMM 21-61-00-110-801 |
| Removal of the Flight-Compartment Duct Temperature-Sensor | AMM 21-61-09-000-801 |
| Installation of the Flight-Compartment Duct Temperature-Sensor | AMM 21-61-09-400-801 |
| Removal of the Cabin Duct Temperature-Sensor | AMM 21-61-13-000-801 |
| Installation of the Cabin Duct Temperature-Sensor | AMM 21-61-13-400-801 |
| Removal of the Cabin Ventilated Temperature-Sensor | AMM 21-61-21-000-801 |
| Installation of the Cabin Ventilated Temperature-Sensor | AMM 21-61-21-400-801 |
| Removal of the Flight-Compartment Ventilated Temperature-Sensor | AMM 21-61-25-000-801 |
| Installation of the Flight-Compartment Ventilated Temperature-Sensor | AMM 21-61-25-400-801 |
| Wiring - Maintenance Practices - ALL | SPM 20-12-00-02 |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 |
Troubleshooting Recommendations:
- Interrogate the MDC as follows:
- 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.
- 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.
- Select the MDC fault from the drop down below to provide additional information to assist in troubleshooting.

