As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED AT CRUISE. ASA QRH RAN, ILLUMINATED AGAIN AFTER SWITCH REPOSITIONED ON. SWITCH OFF FOR THE DURATION OF THE FLIGHT. GROUNDED - YES. FOUND WINDOW HEAT SENSOR FAULT ON BITE REMOVED AND REPLACE RH SIDE WINDOW DUE TO A/C HISTORY REF B737-900 AMM 56-12-11.