What was found
LEFT SIDE WINDOW OVERHEAT DURING CRUISE AT 30,000. QRH USED OVERHEAT STAYED ON. ACFT GROUNDED. ACCOMPLISHED BITE OF WHCU L/T SIDE, M322, FAULTED SENSOR, REF FIM 30-41, TASK 801. VERIFIED PRIMARY AND AND SPARE SENSORS BAD REF WDM 30-41-12. REMOVED AND REPLACED L-2 SLIDER WINDOW REF MM 56-12-11. TRANSFORMER TAP TO POSITION 1 CORRECT POSITION FOR H16 WINDOW REF WDM 30-41-12, ASA 44425.