As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2713, THE CREW REPORTED THE ENGINE 1 FIRE DETECTOR FAIL CAUTION MESSAGE ON EICAS IN FLIGHT. THE CREW COMPLETED THE QRH WITH THE MESSAGE NOT CLEARING, AND NO OTHER ISSUES NOTED. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE REMOVED AND REPLACED THE NUMBER ONE ENGINE FIRE LOOP, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.