As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, RECEIVED AN ECAM MESSAGE FROM SMOKE IN LAVATORY AND ASSOC CONTINUOUS REPETATIVE CHIME. F/A NOTED THE SOURCE WAS LAV E AND DID A VISUAL INSPECTION. NOTHING WAS NOTED. MESSAGE LASTED ONLY A FEW SECONDS AND RETURNED TO NORMAL. REPLACED SMOKE DETECTION CONTROL UNIT AND LAV E SMOKE ALARM FILTER. OPERATIONAL CHECK GOOD IAW AMM 26-16-00 AND 26-17-00.