As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT AVIONIC SMOKE WARNING AT FL 310 SEVERAL WARNINGS ON AND OFF DURING ICING CONDITIONS THEN OFF WHEN CLEAR FOR SEVERAL MIN THEN ON CONTINUOUSLY. DIVERTED INTO DEN 170NM OUT, FOLLOWED ECAM PROCEDURES NEVER NOTICED ANY SMOKE. UNEVENTFUL LANDING AND TAXI IN. TROUBLESHOT PER TSM261500 P101, REMOVED AND REPLACED CARGO SMOKE DETECTOR 13WA PER AMM-2619124. OPS CHECK NORMAL. CREW ADVISED SNIFFER USED, NO SMOKE DETECTED. MX CHECKED AND CONFIRMED NO SMOKE DURING OPS CHECK.