02/01/21
Message Overview:
Message Name:
CH A&B FAULT
Message Code:
B3-006457
Associated CAS:
Reporting LRU:
CKPT T SEL PNL
System Description:
21-61-00
Schematic Diagram:
None
Wiring Diagram:
None
Message Description:
Both channels of the COCKPIT TEMPERATURE SELECTOR located on the Bleed/Air Conditioning Panel are detected.
Possible Causes:
- Cockpit Temperature Selector (CKSEL) (R02)
- Air Cond/Bleed Control Panel (PL17)
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Fault Confirmation Procedure:
- Message# = 1
- Fault Logged = AIR,TAXI
- Status = FAILED/WIRING
- {Term Definitions}
- IAS1A-56 XX 353 00 EXCT XXXX-XXXX XXTX-XXXX XXXX-XXXX 353A: 22; COCKPIT TEMP SELECTOR A
- IAS2A-61 XX 353 10 EXCT XXXX-XXXX XXTX-XXXX XXXX-XXXX 353A: 22; COCKPIT TEMP SELECTOR B
Quick Links:
| 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 |
| Removal of the Bleed-Air Control Panel | AMM 36-11-57-000-801 |
| Installation of the Bleed-Air Control Panel | AMM 36-11-57-400-801 |
| Wiring - Maintenance Practices - ALL | SPM 20-12-00-02 |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 |
| Electrical Connectors - Maintenance Practice - ALL | SPM 20-20-00-02 |
Troubleshooting Recommendations:
- Check for selector failure.