As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT THE RT WINDSCREEN WOULD OVERHEAT WITH THE LT AND RT WINDSHIELD HEATS ON. TROUBLESHOOTING IDENTIFIED THE RT TEMP CONTROL UNIT AS DEFECTIVE PN ND0075-2011. REPLACED UNIT WITH NEW TEMP CONTROL, FUNCTIONAL CHECKS SATISFACTORY.