As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PREFLIGHT WINDOW HEAT OVERHEAT LIGHT ON RIGHT SIDE ILLUMINATES WITH SWITCH ON. CONFIRMED, WHCU SHOWS SENSOR FAULT. SWAPPED TO SECOND SENSOR REF MM 30 41 00 810 812. OPS CHECK R2 WINDOW HEAT GOOD REF MM 30 41 00 710 801. FVR FOR WINDOW HEAT SUCCESSFUL.