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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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06/07/19

Message Overview:

Fault Message:

[ACSC1-A] PAX FWD TEMP SELECT /WRG

Fault Code:

2161525ECS

Associated CAS:

None

Reporting LRU: Air Conditioning System Controller (ACSC) 1
System Description: 21-60-00
Schematic Diagram: 21-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-60-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Passenger Fwd Temperature Selector has been detected out of range by the Left Air Conditioning Controller (ACSC).

NOTE: This selector (±2°C selector) is located in the cabin (refer to Completion drawings).

Possible Causes:

  • Air Conditioning System Controller 1 (A87)
  • Passenger Fwd Temperature Selector
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Air-Conditioning System Controllers AMM 21-60-21-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Air-Conditioning System Controllers AMM 21-60-21-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks between ACSC 1 and the PASSENGER FWD TEMPERATURE SELECTOR (refer to Completion drawings).

    1. If wiring checks are not good, repair the defective associated wiring and do close out.
    2. If wiring checks are good, continue with next step.

  2. It may be possible to use an Ohm meter, measure the PASSENGER AFT TEMPERATURE SELECTOR (Refer to completion wiring diagrams. ACSC will see the input at connector A87P2) to potentiometer total resistance. Total resistance should be 0 to 1000 ohms. Connect the Ohm meter on the potentiometer wiper. Rotate potentiometer slowly and make sure there are no dead spots on potentiometer or any other deficiencies.
  3. Replace ACSC 1.
  4. Do close out.

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