Lav X Flush Open Limit Switch Failure

TASK 38-31-00-810-810-A
Lav X Flush Open Limit Switch Failure

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 383114
AMM 38-31-57-000-001	Removal of the Flush Valve
AMM 38-31-57-400-001	Installation of the Flush Valve
MCDU Display

3. Fault Isolation
Subtask 38-31-00-810-061-A ** ON A/C NOT FOR ALL

A. If the operational test is not satisfactory:

Refer to the bite test last leg or previous legs report page.
MCDU Display ** ON A/C NOT FOR ALL

(1) If the LAST LEG or PREVIOUS LEG gives the maintenance messages LAV X FLUSH V OPEN LIM SW:

do a check and repair the wiring between the:
- FCU connector J3/A / J3/C and limit switch open ASM 383114.

(2) If the wiring is OK:

do a check and adjust the related Limit Switch , refer to the manufacturer's instructions given in the related Component Maintenance Manual (CMM).

(3) If the fault continues:

[Rev.8 from Aug 2018] 2026.04.04 04:34:13 UTC