As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WINDOW HEAT RIGHT SIDE OVERHEAT ILLUMINATED TURNED OFF COOLED/RESET, PER CHECKLIST AFTER WHICH THE OVERHEAT LIGHT ILLUMINATED AGAIN SWITCH TURNED OFF. GROUNDED-YES. REMOVED AND REPLACED R2 WINDOW. OPERATIONS TEST/LEAK CHECK GOOD, REF B737-800 AMM 56-12-11. PART GROUND VERIFIED.