Failure of the ESS TR or ESS TR Contactor or its Related Wiring or Failure of the FWC1(2)

TASK 24-30-00-810-804-A
Failure of the ESS TR or ESS TR Contactor or its Related Wiring or Failure of the FWC1(2)

1. Possible Causes

FWC-1 [1WW1]
FWC-2 [1WW2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
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 24-30-00-710-056-B

A. Test
Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 24-30-00-810-053-B

A. If the warning message ESS TR FAULT on the upper ECAM DU comes into view:
(1) Remove FWC1 AMM 31-53-34-000-001.
(a) If the fault does not continue:

Replace FWC-1 [1WW1] AMM 31-53-34-400-001.

(b) If the fault continues:

Install FWC1 AMM 31-53-34-400-001.
Replace FWC-2 [1WW2] AMM 31-53-34-000-001 and AMM 31-53-34-400-001.

[Rev.8 from Aug 2018] 2026.04.04 04:26:45 UTC