As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R2 SIDE WINDOW OVERHEAT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED FIM 30-41 TASK 801 WHCU (BITE) NO CURRENT FAULTS. FAULT HISTORY SHOWED A BUS POWER FAULT. ACCOMPLISHED B737-800 FIM 30-41 TASK 806, WINDOW HEATER POWER DISCONNECTED. THE BIT VERIFY SHOWS NO FAULT. THIS IS AN INTERMITTENT FAULT AND SYSTEM IS OK FOR SERVICE. ACCOMPLISHED WINDOW HEAT OPERATIONAL TEST REF B737-800 AMM 30-41-00-710-801. OPS TEST NORMAL.