As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 176 FLL-LAS - UNSCHEDULED LANDING / FALSE FIRE WARNING - CREW REPORTED "LAND ASAP" MESSAGE WITH NO OTHER INDICATIONS SHORTLY AFTER TAKEOFF. AIRCRAFT DIVERTED TO TPA AND NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE AVIONIC SMOKE DETECTOR IAW AIRBUS MAINTENANCE MANUAL 26-15-15.