DOC AIRBUS | TSM A320FACSC2 / Pack 2 Bypass Valve Fault
TASK 21-61-00-810-869-A
ACSC2 / Pack 2 Bypass Valve Fault
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 21-61-00-710-158-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 21-61-00-810-206-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:24:56 UTC
ACSC2 / Pack 2 Bypass Valve Fault
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 21-61-00-710-001 | Operational Test of the Pack Temperature-Control System |
| ASM 216102 | |
| AMM 21-61-34-000-002 | Removal of the Air-Conditioning System Controller |
| AMM 21-61-34-400-002 | Installation of the Air-Conditioning System Controller |
| AMM 21-61-53-000-001 | Removal of the Turbine Bypass Valve |
| AMM 21-61-53-400-001 | Installation of the Turbine Bypass Valve |
Subtask 21-61-00-710-158-A ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 21-61-00-810-206-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message ACSC2(57HH)/P2 BYPASS VALVE(30HH):
Subtask 21-61-00-720-058-A ** ON A/C NOT FOR ALL - swap the ACSC2 (57HH) and the ACSC1 (47HH) AMM 21-61-34-000-002 and AMM 21-61-34-400-002.
- swap back the ACSC1 (57HH) and replace the CONT-AIR COND SYSTEM 2 [57HH] (ACSC2 57HH).
- swap back the ACSC2 (47HH) and the ACSC1 (57HH).
- replace the VALVE-TURBINE BYPASS [30HH] AMM 21-61-53-000-001 and AMM 21-61-53-400-001.
- do a check and repair the wiring ASM 216102 from:
- the VALVE (30HH) to the ACSC2 (57HH) and,
- the VALVE (30HH) to ground.
B. Do the test as given in the PARA. 3.A.