As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATE TURNED OFF FOR 5 MINUTES IT DID NOT EXTINGUISH. GROUNDED - YES. PERFORMED BIT CHECK OF LEFT FWD WINDOW HEAT CONTROL UNIT (WHCU) SHOWS BUS POWER FAULT. CHECKED CB'S FOR WINDOW HEAT SYSTEM. FOUND P6-11 B, 9 WINDOW HEAT POWER LEFT FRONT OUT. INSPECTED C/B AND WIRING-RESET CB REF AMM 20-60-01. PERFORMED BIT CHECK-SYSTEM OK REF B737-900 FIM 30-41 TASK 801. PERFORMED REPAIR CONFIRMATION OPS NORMAL REF FIM 30-41 TASK 814.