As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT FROM SAL TO YYZ THE AIRCRAFT RETURN TO SAL DUE TO ECAM WARNING MESSAGE SMOKE FWD CRG BTL FAULT /SMOKE AFT CRG BTL FAULT AT SAL STATION WAS PERFORMED TSM 26-16-00-810-805-A REMOVED AND REPLACED SMOKE DETECTORS 3WH, 4WH, 5WH, 6WH, IAW AMM 26-16-15 AND REMOVED AND REPLACED FIRE EXTINGUISHER BOTTLE IAW AMM 26-23-42 ADDITIONALLY WAS REMOVED AND REPLACED DIR CIDS 1 IAW AMM 23-73-34 OPERATIONAL CHECK OK NORMAL. THE AIRCRAFT RETURNED TO NORMAL OPERATION.