Incorrect AIR BLEED generation

TASK 36-00-00-810-802-A
Incorrect AIR BLEED generation

1. Possible Causes

wiring
BMC-1 [1HA1]
BMC-2 [1HA2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-32-00-860-011	Procedure to Get Access to the SYSTEM REPORT/TEST/PNEU Page
ASM 315403
ASM 361103
AMM 36-11-34-000-001	Removal of the BMC
AMM 36-11-34-400-001	Installation of the BMC

3. Fault Confirmation
Subtask 36-00-00-865-050-A ** ON A/C NOT FOR ALL

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
49VU	FWS/FWC1/SPLY	3WW	F01
121VU	EIS/FWC2/SPLY	2WW	Q07
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22

Subtask 36-00-00-710-051-A ** ON A/C NOT FOR ALL

B. Test
(1) Not Applicable

4. Fault Isolation
Subtask 36-00-00-810-051-A ** ON A/C NOT FOR ALL

A. If the AIR BLEED status maintenance comes into view on the ECAM STATUS page without a CFDS fault message:

Open the circuit breakers 2WW and 3WW for 5 to 10 seconds to cancel the AIR BLEED status maintenance, then close them.

NOTE: 1: Approximately 2 minutes are necessary for the full initialization of the FWCs.

NOTE: 2: The reset of the BMCs (Bleed Monitoring Computers) will not cancel the AIR BLEED status maintenance on the ECAM STATUS page. If this status maintenance came into view after a power transfer, it can go out of view after the first subsequent engine start and will not come into view again after engine shutdown.

NOTE: 3: The AIR BLEED status maintenance is applicable when it is shown, after engine shutdown, in the POST FLIGHT Report as an ECAM warning with the related CFDS fault message.

NOTE: 4: To erase the AIR BLEED, the only condition is to start the FWC Flight phase 1. After the engine shutdown, the A/C will be in Flight phase 10. Three hundred seconds later, the start of the Flight phase 1 should reset the AIR BLEED.

(1) If the fault continues:

On one MCDU, get the SYSTEM REPORT/TEST PNEU menu page AMM 31-32-00-860-011.
On one MCDU, push the line key adjacent to the BMC1(2) indication.

(a) If the BMC1(2) page does not come into view:

Do a check of the wiring ASM 361103 and ASM 315403 between:
. Pin AA/10C of the BMC1 (1HA1) and pin AB/12G of the SDAC1(2) (1WV1(2))
. Pin AA/11C of the BMC1 (1HA1) and pin AB/12H of the SDAC1(2) (1WV1(2))
. Pin AA/10C of the BMC2 (1HA2) and pin AE/12C of the SDAC1(2) (1WV1(2))
. Pin AA/11C of the BMC2 (1HA2) and pin AE/12D of the SDAC1(2) (1WV1(2)).

1 If the wiring is not correct:

Repair the wiring .

2 If the wiring is correct:

Replace the BMC-1 [1HA1] or BMC-2 [1HA2] AMM 36-11-34-000-001 and AMM 36-11-34-400-001.

(b) If the BMC1(2) page comes into view:

NOTE: The AIR BLEED status maintenance on the ECAM STATUS page is an unwanted message. You can ignore it.

Open the AIR BLEED/ENG 1/MONG (2HA1) and AIR BLEED/ENG 1/CTL (3HA1) circuit breakers and the AIR BLEED/ENG 2/MONG (2HA2) and AIR BLEED/ENG 2/CTL (3HA2) circuit breakers during 5 to 10 seconds, then close them.

[Rev.8 from Aug 2018] 2026.04.04 04:33:39 UTC