As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L2 WINDOW HEAT LIGHT EXTINGUISHED WHILE ALL OTHER LIGHTS REMAINED ON. SUNLIGHT WAS NOT AN ISSUE. ACFT GROUNDED. PERFORMED WINDOW HEAT CONTROL UNIT BITE PROCEDURE ON L2 WINDOW IAW AMM TASK 30-41, TASK 801. NO FAULTS NOTED. NO HISTORY 30 DAYS.