As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON GROUND. CYCLED SWITCH PER QRH 3.5 SYSTEM RESET GOOD. GROUNDED - YES. CONFIRMED FAULT, WHC SHOWS SENSOR FAULTS. ACCOMPLISHED "RESISTANCE CHECK WINDOW TEMPERATURE SENSORS" REF B737-800 AMM 30-41-21-760-801, BOTH PRIMARY & SPARE SENSORS SHOWS 320 OHMS. DUE TO HISTORY (CAPT'S SLIDING WINDOW), RE-POSITIONED WIRE TO THE SPARE SENSOR TERMINAL, OPS CK NML.