06/10/19
Message Overview:
Fault Message:
[ACSC1-B] LH FLOW CONT VLV CMD /FCV
Fault Code:
2162321ECS
Associated CAS:
| Reporting LRU: | Air Conditioning System Controller (ACSC) 1 |
| System Description: | 21-51-00 |
| Schematic Diagram: | 21-51-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 21-52-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
The left Flow Control Valve has been detected failed either in opened or closed position.
Possible Causes:
- Flow Control Valve (FCV) 1 (L24)
- Compressor Pneumatic Overheat-Sensor (CPNOH)
- Junction Box (JB5)
- Secondary-Power Distribution Assembly (SPDA) 2 (A14)
- Data Acquisition Unit (DAU) 1 (A17)
- Air Conditioning System Controller (ACSC) 1 (A87)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin:
- AW700-21-0160 - "PACK FAULT" CAS message while CAIMS / OMS is active (Global Express (9002 to 9153), Global 5000 (9127 to 9411, 9417 to 9431, 9998), Global Express XRS (9159 to 9429))
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Removal of the Flow Control Valves | AMM 21-51-25-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Flow Control Valves | AMM 21-51-25-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Compressor Pneumatic Overheat-Sensors | AMM 21-52-17-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Compressor Pneumatic Overheat-Sensors | AMM 21-52-17-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| 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 ] |
| Removal of the Junction Box JB5 | AMM 24-00-09-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Junction Box JB5 | AMM 24-00-09-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Secondary-Power Distribution Assemblies | AMM 24-62-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Secondary-Power Distribution Assemblies | AMM 24-62-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Data Acquisition Units (DAU) | AMM 31-42-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Data Acquisition Units (DAU) | AMM 31-42-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Perform leak check of the sense line between FCV 1 and CPNOH.
- Swap FCV 1 with FCV 2.
- If system checks are good, replace FCV 1 and do close out.
- If fault remains, continue with next step.
- Swap CPNOHs. Is the fault message still present?
- If NO, replace the defective CPNOH and do close out.
- If YES, continue with next step.
- Swap ACSC 1 with ACSC 2.
- If system checks are good, replace ACSC 1 and do close out.
- If fault remains, continue with next step.
- Swap DAU 1 with DAU 2.
- If system checks are good, replace DAU 1 and do close out.
- If fault remains, continue with next step.
- Swap SPDA 2 with SPDA 3.
- If system checks are good, replace SPDA 2 and do close out.
- If fault remains, continue with next step.
- Check JB5 PCB1 K1 relay (ref Systems Schematic Manual) operation and perform a continuity check between ACSC 1, FCV and DAU 1.
From To Result A87P1-94 L24P1-1 A87P1-95 L24P1-2 L24P1-9 A17BP1-D9 - If there is continuity, repair defective associated wiring as required and do close out.
- If there is no continuity, continue with next step.
- Select PACK control switch from AUTO to MANUAL to energize the relay break continuity.
- If relay fails to energize check for power to relay from SPDA 2.
- If relay is energized check for ground on wire to PACK Control Switch for short to ground.
- Do close out.