As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 1470, PHL-SJU: AFTER TAKEOFF/CLIMBOUT, CREW RECEIVED NUMEROUS LAVATORY/CABIN SMOKE WARNINGS. CREW ALSO REPORTED SMOKE ODOR THROUGHOUT CABIN. FLIGHT RETURNED TO PHL. MAINTENANCE REPLACED THE APU FUEL CONTROL UNIT SEALS DUE TO OIL LEAK AND THE LEFT AND RIGHT HEAT EXCHANGERS DUE TO THE OIL SMELL IN THE PACK SYSTEM.