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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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04/07/21

Message Overview:

Message Name:

DISAGREE / VALVE CLOSED

Message Code:

B3-006846

Associated CAS:

R WING ANTI-ICE FAIL
(Caution)

Reporting LRU: HI PRESS VALVE 2
System Description: 36-00-00
Schematic Diagram: 36-11-00
Wiring Diagram: 36-15-02

Message Description:

The HIGH PRESSURE VALVE 2 is detected failed in closed position.

Possible Causes:

  • High Pressure Valve 2 (HPV) (V6)
  • Position Switch
  • Integrated Air System Controller 2 (IASC) (A56)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 1
  2. {Term Definitions}

    1. IAS2A-75 XX 353 11 EXCT XXXX-XXXX XXXX-TXXX XXXX-XXXX 353B: 20; HI PRESS VALVE 2 FAIL

Quick Links:

Removal of the Data Concentrator Unit (DCU) AMM 31-41-01-000-802
Installation of the Data Concentrator Unit (DCU) AMM 31-41-01-400-802
Leak Test of the High-Pressure Bleed-Air System AMM 36-15-00-790-801
Removal of the High Pressure Valve AMM 36-15-01-000-801
Installation of the High Pressure Valve AMM 36-15-01-400-801
Removal of the High Pressure Sensors AMM 36-15-03-000-801
Installation of the High Pressure Sensors AMM 36-15-03-400-801
Operational Test of the Maintenance Diagnostic System AMM 45-45-00-710-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Check valve or position switch or wiring between the valve, and the IASC #2.

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