As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ANTI-ICE DUCT RED WARNING MESSAGE IN FLIGHT. SYNOPTIC PAGE SHOWED RT FUSELAGE OVERHEAT. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R LOOP A18WK AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.