As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FCA - FLIGHT 2449 - WHEN THE ADVISORY TEST IS SELECTED, THE FIRE WARNING BELL IS TRIGGERED. MAINTENANCE INSPECTED THE SYSTEM AND CLEANED THE PEC ADVANCE PNEUMATIC DETECTOR AT THE NR 1 ENGINE. OPERATIONAL CHECKS WERE PERFORMED AND WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. NO PARTS WERE REPLACED.