As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, THE CREW RECEIVED A LEFT WINDSHIELD HEAT CAUTION MESSAGE AND NOTICED A SLIGHT ODOR. THE QUICK REFERENCE HANDBOOK WAS FOLLOWED AND CYCLED SYSTEM. AFTER CYCLING THE SYSTEM THE CREW OBSERVED SMOKE AND TURNED THE WINDSHIELD HEAT OFF. THE AIRCRAFT RETURNED TO FIELD AND AN EMERGENCY WAS DECLARED. THE AIRCRAFT LANDED AND TAXIED TO THE GATE WITH NO FURTHUR INCIDENT. R & R THE WINDSHIELD AND WINDSHIELD HEAT CONTROLLER.