As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED BITE OF R/H SIDE WHCU PER B737-800 FIM 30-41 TASK 801. FOUND NO CURRENT FAULTS. PERFORMED FAULT HISTORY AND FOUND BUS POWER FAULT. PERFORMED FIM 30-41 TASK 806 AND FOUND NO FAULTS. PERFORMED GOOD OPS TEST OF R/H SIDE WINDOW HEAT PER B737-800 AMM 30-41-00-710-801.