As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WINDOW OVERHEAT, UNABLE TO EXTINGUISH WITH QRH. GROUNDED - YES. PERFORMED FIM 30-41 TASK 801 WINDOW HEAT CONTROL UNIT BITE. FOUND SENSOR FAULTS FOR LT NR 2 WINDOW ON ALL HISTORY RECORDS. SWAPPED LT NR 2 WINDOW OVERHEAT SENSOR TO SECONDARY SENSOR, REF FIM 30-41 TASK 811. OPS CHECKS GOOD.