As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PREFLIGHT, FOUND C/B FOR THE RIGHT FRONT WINDOW HEAT POPPED (ON OVHD, WINDOW HEAT SWITCHES WERE ON AND RT FWD SHOWED AMBER OVERHEAT. GROUNDED - YES. INSPECTED WIRING CIRCUIT-NORMAL AND NO HISTORY REF B737-900 WDM 30-41-12. RESET C/B ON P6-12 PANEL (RT FRONT WINDOW HEAT) REF B737-900 AMM 20-60-01RT FRONT WINDOW HEAT OPS NORMAL REF AMM 30-41-00. GRD VERIFICATION SUCCESSFUL.