As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FWD WINDOW HEAT OVERHEAT LT ILLUMINATED WITH SWITCH ON. GROUNDED - YES. PERFORMED WINDOW #1 WINDOW SENSOR SWAP. PERFORMED OPS CHECK, NO DEFECTS NOTED. REF B737-900 FIM 30-91 TASK 812. AND PERFORMED WINDOW HEAT CONTROLLER BITE CHECK. NO LOGGED FAULTS REF FIM 30-40 TASK 801.