As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW DESCRIBED AFTER TURNING ON WINDSHIELD HEAT, EITHER HIGH OR LOW SETTING. AFTER 2 MINUTES THE CAUTION LIGHT AND LH WINDOW HEAT CAUTION MESSAGE WOULD ILLUMINATE. RECYCLING SWITCH DID NOT CORRECT ISSUE. THE MAINTENANCE TEAM TROUBLESHOT THE LEFT WINDSHIELD HEAT AND FOUND SENSOR WITH TERMINALS A&B DEFECTIVE. THE TECH SWAPPED WIRES TO THE SPARE SENSOR WITH TERMINALS C&D. PERFORMED OPERATIONAL CHECKS, OPS CHECKS GOOD. NO OTHER DEFECTS NOTED. THIS WINDSHIELD WAS INSTALLED AS NEW 14 MONTHS PRIOR.