As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MULTIBLE TIMES DURING THE FLIGHT THE CREW RECEIVED ANTI-ICE DUCT WARNING MESSAGES. THE CREW OF FLIGHT 2471 FOLLOWED THE QRH AND MADE AN UNEVENTFUL LANDING AT DESTINATION. MAINTENANCE PERFORMED AN OPERATIONAL TEST OF THE BLEED-AIR LEAK DETECTION AND WARNING SYSTEM IAW CRJ-200 AMM 36-21-00-710-801. ALL TESTS WERE GOOD. NO DEFECTS WERE NOTED AT THIS TIME. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.