As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(L) FWD WINDOW OVERHEAT LIGHT ILLUMINATED ON LANDING. GROUNDED - YES. PERFORMED WHCU SYSTEM TEST REF B737-9 AMM 30-41-11-710-801 OPS CHECK GOOD NO DEFECTS NOTED. FOR TROUBLESHOOTING REF FOUND PREVIOUS FLIGHT LEG FAULT #1 WINDOW WHCU - LRU FAULT.