Pack 1 is incorrectly off

TASK 21-61-00-810-808-A
Pack 1 is incorrectly off

1. Possible Causes

P/BSW-AIR COND/PACK 1 [7HB]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-61-00-710-001	Operational Test of the Pack Temperature-Control System

3. Fault Confirmation
Subtask 21-61-00-710-064-A ** ON A/C NOT FOR ALL

A. Do the operational test of the pack temperature-control system AMM 21-61-00-710-001.

NOTE: If a fault is detected, the PC gives a fault code for shop maintenance in addition to the related CFDS message(s) (refer to TSM chapter 21-63-00, page block 301).

Subtask 21-61-00-710-064-B ** ON A/C NOT FOR ALL

A. Do the operational test of the pack temperature-control system AMM 21-61-00-710-001.

4. Fault Isolation
Subtask 21-61-00-810-077-A

A. If the ECAM upper DU gives the warning AIR PACK 1 OFF, but no maintenance message comes on:

make sure that the P/BSW-AIR COND/PACK 1 [7HB] (pushbutton switch PACK 1), which is installed on the panel 30VU, is in the on position (with the FAULT and OFF legends off).

Subtask 21-61-00-710-065-A

B. Do the test as given in the Para. 3.A.

5. Close-up
Subtask 21-61-00-860-057-A

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:24:52 UTC