As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TOP OF CLIMB, APU B-FAULT ILLUMINATED ALONG WITH FIRE HANDLE AND FIRE WARNING. AFTER 2 HOURS INDICATION WAS NORMAL. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. LAX MAINTENANCE RESEATED APU FIRE DETECTION CARD AND CHECKED LOOPS. OPERATIONAL CHECK GOOD.