As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LEVEL OFF, THE SLIDE WARNING LIGHT ON THE RIGHT CREW ENTRY DOOR ILLUMINATED AND THE HORN SOUNDED. THERE WERE NO INDICATIONS ON ECAM AND THE AIRCRAFT PRESSURIZATION REMAINED NORMAL. THE SLIDES HORN CIRCUIT BREAKER WAS PULLED UNTIL FL180. LIGHT STAYED ON UNTIL PASSING 16,000 FT, THEN WENT OFF. HORN DID NOT COME BACK ON WHEN RESETTING THE CIRCUIT BREAKER.