As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 546 - DAY-ELP - HAD AN AIR RETURN TO DAY. DURING CLIMB FIRE WARNING BELL SOUNDED WITH NO OTHER INDICATIONS. PERFORMED ENGINE, WHEEL WELL, FIRE WALL FIRE TEST ALL NORMAL, RAN ENGINES AT 85 PERCENT N2. NO FIRE WARNING OR OTHER ABNORMALITIES NOTED.