No Smoke Lavatory Warning on ECAM available

TASK 26-17-00-810-812-A
No Smoke Lavatory Warning on ECAM available

1. Possible Causes

DIR-CIDS, 1 [101RH]
FWC-1 [1WW1]
FWC-2 [1WW2]
DIR-CIDS, 2 [102RH]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-73-34-000-001	Removal of the CIDS Director
AMM 23-73-34-400-001	Installation of the CIDS Director
AMM 26-17-00-710-001	Operational Test of the Lavatory Smoke-Detection System
AMM 31-53-34-000-001	Removal of the Flight Warning Computer (FWC)
AMM 31-53-34-400-001	Installation of the Flight Warning Computer (FWC)

3. Fault Confirmation
Subtask 26-17-00-710-102-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the operational test of the lavatory smoke-detection system AMM 26-17-00-710-001.

4. Fault Isolation
Subtask 26-17-00-810-141-A ** ON A/C NOT FOR ALL

A. If the test gives a different maintenance message:

Do the trouble shooting procedure related to the maintenance message.

Subtask 26-17-00-810-142-A ** ON A/C NOT FOR ALL

B. If the test gives the maintenance message TEST OK, no other maintenance action is necessary.

Subtask 26-17-00-810-143-A ** ON A/C NOT FOR ALL

C. If the test gives the maintenance message
CIDS DIR1 (101RH)/ FWC1/2 (1WW1/2):
(1) Replace the DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
(2) If the fault continues:

Replace the related FWC-1 [1WW1] or FWC-2 [1WW2] AMM 31-53-34-000-001 and AMM 31-53-34-400-001.

Subtask 26-17-00-810-144-A ** ON A/C NOT FOR ALL

D. If the test gives the maintenance message
CIDS DIR2 (102RH)/ FWC1/2 (1WW1/2):
(1) Replace the DIR-CIDS, 2 [102RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
(2) If the fault continues:

Replace the related FWC-1 [1WW1] or FWC-2 [1WW2] AMM 31-53-34-000-001 and AMM 31-53-34-400-001.

Subtask 26-17-00-710-103-A ** ON A/C NOT FOR ALL

E. Do the test as given in the Para. 3.

5. Close-up
Subtask 26-17-00-860-075-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:27:21 UTC