As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE WINDSHIELD HAD OVERHEAT, TURNED OFF PER QRH FOR 5 MINS LIGHT DID NOT COME BACK ON WHEN TURNED BACK ON. GROUNDED - YES. PERFORMED LEFT SIDE WINDOW WHCU OPS TESTS. NO FAULTS FOUND. WHCU BITE SHOWS #1 SENSOR FAIL SEVERAL TIMES. REF B737-9 AMM 30-41-11. DUE TO HISTORY SWAPPED TO SPARE SENSOR PER AMM 30-41-00-420-801. OPENED /CLOSED 1 CB. PERFORMED WHCU OPS TEST. NO FAULTS FOUND. REF B737-9 WDM 30-41-12 PG 3.