background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

01/13/25

Message Overview:

Message Name:

R WSHLD HEAT SPCC FAILED

Message Code:

B3-007848

Associated CAS:

R WSHLD HEAT FAIL
(Caution)

Reporting LRU: R WSLD HEAT SPCC
System Description: 30-41-00 - Windshield and Side Window Anti-Ice
Schematic Diagram: 30-41-00 - Windshield and Side Window Anti-Ice
Wiring Diagram: 30-41-11 - Windshield Heater Power-Supply (RHS)

Message Description:

Right Windshield Secondary Power Center Contactor has failed.

Possible Causes:

  • Contactor (K64)
  • Time Delay Thermal Detector (K106)
  • Right Windshield Temperature Controller (A158)
  • Right Secondary Power Center (RSPC) (A38)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW300-30-0328 - Windshield Heat Fail CAS Messages (20501 - 20999)

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

NOTES:

  • The L and R Windshield Temperature Control circuits and parts (including relays) can be used for troubleshooting if needed (interchange).
  • The Windshield Temperature Controllers and Side Window Temperature Controllers are different part numbers.

Quick Links:

Standard Aircraft Configuration for Maintenance AMM 12-00-00-867-803
Electrical/Electronic Safety Precautions AMM 24-00-00-910-801
Electrostatic-Discharge Safety Precautions AMM 24-00-00-910-802
Connect Electrical Power to the Aircraft AMM 24-00-00-861-801
Remove the Electrical Power from the Aircraft AMM 24-00-00-861-802
Removal of the Secondary Power Center (SPC) AMM 24-62-01-000-801
Installation of the Secondary Power Center (SPC) AMM 24-62-01-400-801
Operational Test of the Secondary Power Center (SPC) AMM 24-62-01-710-801
Removal of the Secondary Power Center (SPC) Relays AMM 24-62-04-000-801
Installation of the Secondary Power Center (SPC) Relays AMM 24-62-04-400-801
Removal of the Side-Window Temperature Controller AMM 30-41-05-000-801
Installation of the Side-Window Temperature Controller AMM 30-41-05-400-801

Troubleshooting Recommendations:

  1. Confirm status of circuit breaker. If the circuit breaker is open, find out the reason before resetting. If there is other Secondary Power Center related faults in the MDC, look for commonalities with the associated power bus (R MAIN BUS).
  2. Make sure WSHLD/WINDOW R PBA is ON.
  3. Measure 28 VDC at RWTC A158P1 pin U.

    1. If there is 28 VDC, go to step 7.
    2. If there is no voltage, continue with next step.

  4. Interchange WSHLD/WINDOW PBAs.

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

  5. Do wiring checks between anti-ice panel PL19 and right windshield temperature controller. Repair as required.

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

  6. Replace anti-ice panel PL19.

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

  7. Measure 28 VDC at RSPC A38 pin T7.
    CAUTION: The current could be 50 amps when the Windshield Heat is On.

    1. If there is 28 VDC, go to step 11.
    2. If there is no voltage, continue with next step.

  8. Interchange contactor K63 with K64.

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

  9. Interchange time delay thermal detector K106 with K107.

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

  10. Interchange SPCs.

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

  11. Do wiring checks between RSPC and right windshield temperature controller. Repair as required.

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

  12. Interchange WTCs.
  13. Do close out.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.