As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RED ANTI-ICE DUCT MESSAGE DURING CLIMBOUT. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED LT ANTI-ICE SENSING ELEMENTS, FOUND LOOP A15WK BROKEN UNDER CABIN FLOORBOARDS, R & R SENSING ELEMENT A15WK AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.