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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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Quick Links

10/06/20

Message Overview:

Fault Message:

ACPC AC 1 CABIN FEED RELAY-K16

Fault Code:

2451360ACP

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: AC Power Center (ACPC)
System Description: 24-22-00
Schematic Diagram: 24-51-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-51-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Secondary Logic Card (SLC) 1 detects a discrepancy between the coil drive status and auxiliary contact status of the Contactor K16.

Possible Causes:

  • Contactor K16
  • Secondary Logic Card (SLC) 1
  • Electronic Module 1 (EM1)
  • AC Power Center (ACPC) Mother Board
  • Electromagnetic Interference (EMI) Filter
  • AC Power Center (ACPC) (A54)
  • AC Power Center (ACPC) TB202
  • AC Power Center (ACPC) TB102
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

If AC 1 CABIN FEED RELAY (K16) is tripped and is not resettable:

  • Check K16 output (A2/B2/C2) and make sure all the three phases are not shorted to ground.

Quick Links:

Removal of the AC Power Center (ACPC) AMM 24-51-00-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) AMM 24-51-00-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) Secondary Logic AMM 24-51-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) Secondary Logic AMM 24-51-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) K-Series Relays
(K16, K19, K23 and K26)		 AMM 24-51-69-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) K-Series Relays
(K16, K19, K23 and K26)		 AMM 24-51-69-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the AC Power Center (ACPC) Electronic Modules AMM 24-51-81-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the AC Power Center (ACPC) Electronic Modules AMM 24-51-81-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
AC Power Center Component Maintenance Manual CMM 24-51-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Swap the SLC 1 with SLC 2.

    1. If system checks are good, replace SLC 1 and do close out.
    2. If fault remains, continue with next step.

  2. Perform voltage check on K16 as follows:

    From To Result
    K16-X1 Ground

    1. If there is no voltage and there are no CAIMS messages related to EM1 fuses (F1, F2, F3 and F4), continue with next step.
    2. If no voltage and there is CAIMS messages related to EM 1 Fuses (F1, F2, F3 and F4), troubleshoot these messages first.
    3. If there is voltage, continue with step 5.

  3. Check TB202-1 connection. Repair as required.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  4. Check TB102-1 connection. Repair as required.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  5. Remove aircraft power. Remove SLC 1 and disconnect K16-X1, K16-X2, K16-Y1, K16-Y2, K16-11 and K16-12. Perform the continuity check between the connections that follows:

    From To Result
    K16-X2 (lug) Ground
    K16-Y2 (lug) Ground
    K16-12 (lug) Ground

    1. If there is continuity, go to step 10.
    2. If there is no continuity, continue with next step.

  6. Perform the continuity check as follows:

    From To Result
    K16-11 (lug) Ground

    1. If there is no continuity, continue with next step.
    2. If there is continuity, go to step 8.

  7. Check TB102-3 connection.

    1. If connection is correct, go to step 10.
    2. If connection is not correct, repair as required and do close out.

  8. Perform the continuity check between the K16 connections that follows:

    From To Result
    K16-Y2 (lug) SLC 1 P111A-12
    K16-X2 (lug) SLC 1 P111A-13
    K16-12 (lug) SLC 1 P111C-17

    1. If there is continuity, continue with next step.
    2. If there is no continuity, go to step 10.

  9. Replace K16.

    1. If the system checks are good, do close out.
    2. If fault remains, continue with next step.

  10. Replace ACPC.
  11. Do close out.

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