As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5585, CLE TO RDU. DURING CRUISE THE FLIGHT CREW RECEIVED A RIGHT WINDOW HEAT EICAS MESSAGE. THE QRH PROCEDURE WAS FOLLOWED BUT THE MESSAGE REMAINED. THE FLIGHT DIVERTED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE MEASURE THE RESISTANCE OF THE WINDOW AND ALL RESISTANCES WERE WITHIN LIMITS. THE TEMP CONTROLLER WAS THEN REPLACED AND THE WINDOW HEAT CHECKED GOOD. ON THE 29TH THE FAULT RETURNED AND BOTH THE RIGHT HAND WINDOW AND WINDSHIELD WERE REPLACED. THE WINDOW HEAT CHECKED GOOD AFTER THE TEMP CONTROLLER WAS REPLACED AGAIN.