As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FWD WINDOW (CAPT #1) OVERHEAT LIGHT ILLUMINATED AND WILL NOT EXTINGUISH. GROUNDED - YES. PRIMARY AND SPARE SENSORS READ OPEN FROM WINDOW HEAT CONTROLLER CONNECTOR. REMOVED AND REPLACED L1 WINDOW REF B737-800 AMM TASK 56-11-11-000-801 AND TASK 56-11-11-400-821. LEAK & OPS TEST GOOD.