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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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CRC Montreal (YUL)
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06/12/19

Message Overview:

Fault Message:

HUMIDIFIER FAULT

Fault Code:

2163629ECS

Associated CAS:

HUMIDIFIER FAIL
(Advisory)

Reporting LRU: Humidifier Control Unit (HCU)
System Description: 21-71-00
Schematic Diagram: 21-71-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-71-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Humidifier Control Unit (HCU) has detected either the Humidifier Drain Valve (HDV), Humidifier Water Shutoff Valve (HWSOV) or Humidifier Water Feed Valve (HWFV) being failed.

Possible Causes:

  • Humidifier Water Shut-off Valve (HWSOV) (L51)
  • Humidifier Water Feed Valve (HWFV) (L52)
  • Humidifier Drain Valve (HDV) (L53)
  • Humidifier Control Unit (HCU) (A248)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

NOTE: CAIMS fault HUMIDIFIER FAULT goes together with one or more of the following faults:

  • 2163615ECS - HUMIDIFIER DRAIN VALVE /HDV
  • 2163624ECS - HUMID WATER FEED VLV (HWFV)/ WRG
  • 2163625ECS - HUMIDIFIER WATER SOV (HWSOV)/ WRG

Quick Links:

None

Troubleshooting Recommendations:

  1. Access CAIMS and perform troubleshooting of the following accordingly:
  2. Do close out.
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