What was found
LEFT SIDE WINDOW OVERHEAT. FOLLOWED QRH WAITED 2-3 MINUTES TURNED SWITCH BACK ON, OVERHEAT LIGHT ILLUMINATED AGAIN. GROUNDED - YES. ACCOMPLISHED WHCU BITE FOR LEFT SIDE WINDOW REFERENCE B737-800 FIM 30-41 TASK 801. FAULT HISTORY LOGGED FIVE WINDOW SENSOR FAULTS. PERFORMED FIM 30-41 TASK 811. CONNECTED PRIMARY SENSOR TERMINAL TO SPARE SENSOR REFERENCE B737-800 WDM 30-41-12 ACCOMPLISHED WINDOW HEAT OPERATIONAL TEST FOR LEFT SIDE WINDOW REFERENCE B737-800 AMM 30-41-00-710-801. OPS TEST NORMAL.