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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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12/18/19

Message Overview:

FIRE BTL1 LO PRESS
(Caution)

DDG Reference: 26-12
Pilot Action (QRH): SMK 14-10
System Description: 26-21-00
Schematic Diagram: 26-21-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 26-21-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Fire extinguisher bottle #1 pressure is below 250 ±25 psig.

Possible Causes:

  • Fire Extinguisher Bottle #1 Pressure is low
  • Fire Extinguisher Bottle #1 Pressure Switch
  • Fire Detection and Extinguishing (FIDEEX) Control Unit (CU)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

NOTE: If the Fire Bottle was completely discharged with no activation of the Fire Handle, refer to this Observed Fault.

Quick Links:

Removal of the Fire Detection and Extinguishing (FIDEEX) Control Unit AMM 26-10-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Fire Detection and Extinguishing (FIDEEX) Control Unit AMM 26-10-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Fire Extinguisher Container AMM 26-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Fire Extinguisher Container AMM 26-21-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Using the PMAT, access CAIMS to view active or stored faults. Select displayed message from menu below:

    1. If no message is displayed, continue with next step.

  2. Check the gauge pressure indication on the FIREX bottle.

    1. If gauge shows an indication of 250 ±25 psi (1724 ±172 Pa) or less, go to step 4.
    2. If not, continue with next step.

  3. Disconnect Fire Extinguisher Container connector A111P4 and FIDEEX control unit connector A106P1. Perform a continuity check as follows:

    From To Expected Result Result
    A111P4-3 Ground Open
    A111P4-2 Ground Open
    A111P4-3 A106P1-50 Continuity
    A111P4-2 A106P1-40 Continuity

    1. If wiring defects are found, repair defective associated wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  4. Replace the Fire Extinguisher Container. Is the fault still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  5. Replace the FIDEEX control unit.
  6. Do close out.

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