As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU - FLT 1879 - EN ROUTE MIA/CUR DURING CRUISE, LOWER AFT BODY HEAT LIGHT ILLUMINATED. ACCOMPLISHED EMERGENCY CHECK LIST AND DIVERTED INTO SJU AND LANDED WITHOUT INCIDENT. REPLACED OVER TEMP ALARM CONTROL UNIT. INSPECTED DUCTS, RAN ENGINES, AND ACCOMPLISHED ALL CHECKS. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)