As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE ANTI-ICE DUCT WARNING MESSAGE ILLUMINATED WHEN WING ANTI-ICE WAS SELECTED ON. THE CREW FOLLOWED THE QRH AND RETURNED TO PIT. MAINTENANCE PERFORMED OPERATIONAL CHECKS OF THE WING ANTI-ICE SYSTEM IAW CRJ200 AMM 30-12-00-710-801. THE SYSTEM OPERATIONALLY CHECKED GOOD AND NO DEFECTS WERE FOUND. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.