As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT L2 WINDOW OVERHEAT LIGHT ILLUMINATED FOLLOWED QRH AFTER 5 MIN TURNED BACK ON LIGHT REILLUMINATED. TURNED OFF FOR REMAINDER OF FLIGHT. GROUNDED - YES. NOTE THAT THIS IS THE THIRD WRITE-UP WITHIN 30 DAYS FOR THE SAME FAULT. L2 WINDOW WAS REPLACED 16 DAYS AGO. REMOVED AND REPLACED WINDOW HEAT CONTROL UNIT PER AMM 30-41-11/401. SYSTEM TEST GOOD PER AMM TASK 30-41-11-710-801.