As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB R SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. FOLLOWED QRH AND AFTER TURNING HEAT BACK ON THE OVERHEAT LIGHT REMAINED EXTINGUISHED. GROUNDED-YES. PERFORMED WINDOW HEAT BITE CHECKED, OPERATIONS NORMAL. LIGHTS REMAINED OFF, REF B737-900 FIM 30-41 TASK 801 AND A/C OK FOR SERVICE.