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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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07/25/19

Message Overview:

L WSHLD HEAT OFF
(Status)

DDG Reference: None
Pilot Action (QRH): None
System Description: 30-41-00
Schematic Diagram: 30-41-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 30-41-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

L WINDSHIELD HEAT Switch on WINDSHIELD HEAT Control Panel is set to OFF.

If this message shows when switch is not selected OFF, then the Possible Causes: apply.

Possible Causes:

  • L WINDSHIELD HEAT Switch/WINDSHIELD HEAT Control Panel
  • Left Windshield Temperature Controller (WTC)
  • Data Acquisition Unit 1 (DAU1)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of Windshield and Side Window Temperature Controller AMM 30-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Windshield and Side Window Temperature Controller AMM 30-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of WINDSHIELD HEAT Control Panel AMM 30-41-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of WINDSHIELD HEAT Control Panel AMM 30-41-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Data Acquisition Unit (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Data Acquisition Unit (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram 30-41-03 WM 30-41-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Swap WTCs.

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

  2. Perform wiring checks between L WINDSHIELD HEAT switch/WINDSHIELD HEAT control panel, DAU1 and L WTC.

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

  3. Swap DAUs.

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

  4. Replace WINDSHIELD HEAT control panel.
  5. Do close out.

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