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 ILLUMINATED ON GROUND. GROUNDED - YES. INITIAL EVALUATION, FOUND 2 CB POPPED OPEN FOR WHCU(S) ON P18-3 E1/2. PERFORMED CB RESET INSPECTION IAW B737-800 AMM 20-60-01, NO DEFECTS NOTED. RESET 2 CB X2. RAN WHCU BITE IAW AMM 30-41-11-710-801, NO FAULTS FOUND. CB'S REMAIN IN.