As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R2 WINDOW OVERHEAT LIGHT CAME ON. WE RAN THE QRH AND THE LIGHT EXTINGUISHED. AFTER 10 MIN. IT REILLUMINATED AND THE WINDOW HEAT WAS PLACED IN THE OFF POSITION FOR THE REST OF THE FLIGHT. GROUNDED - YES. PER B737-800 FIM 30-41 TASK 811. WHCU BIT VERIFY PASSES. FAULT HISTORY IS FULL OF WINDOW SENSOR FAULTS. FOURTH WRITEUP ON THIS WINDOW IN 30 DAY. WINDOW ALREADY ON SPARE SENSOR. REMOVED AND REPLACED R2 WINDOW REF B737-800 AMM 56-12-11 OPS CHECK GOOD.