As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE WINDOW HEAT RIGHT SIDE SIDE ON LIGHT IS NOT ON WITH SWITCH ON. GROUNDED - YES. TURNED ON R/H SIDE WINDOW SWITCH AND 'ON' LIGHT OPERATES NORMALLY. ACCOMPLISHED WINDOW HEAT CONTROL UNIT SYS TEST AND BITE REF B737-9 AMM 30-41-11-710-801, NO DEFECTS NOTED.