As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 WINDSHIELD HEAT FAIL EICAS MESSAGE DURING ICING CONDITIONS. CREW COMPLIED WITH QRH. DID NOT ATTEMPT TO REACTIVATE THE SYSTEM. R & R THE NR 1 WINDSHIELD TEMP CONTROLLER IAW AMM 30-42-01. OPS CHECKED GOOD. OK FOR SERVICE. CHECKED RESISTANCE OF WINDSHIELD TEMP SENSORS AND CONTINUITY OF HARNESS BETWEEN SENSORS AND CONTROLLER. NO DEFECTS NOTED.